In 2015 Town Meeting approved the Master Plan. Following is the Housing chapter of that plan. It contains a great deal of information about details of the housing situation in Arlington, challenges of housing price increases, needs for specialty housing, opportunities for meeting these needs, etc. The authors found that “most cities and towns around Arlington experienced a significant rise in housing values from 2000 to 2010. A 40 percent increase in the median value was fairly common. However, Arlington experienced more dramatic growth in housing values than any community in the immediate area, except Somerville. In fact, Arlington’s home values almost doubled.” This and related data helps explain why the need for affordable housing is now so acute.
Related articles
A municipality’s master plan is intended to set the vision and start the process of crafting the future of the municipality in regard to several elements, housing, history, culture, open space, transportation, finance, etc. Arlington began a very public discussion about these issues and the development of the Master Plan in 2012. In 2015, after thorough community wide discussion, the Master Plan was adopted by Town Meeting. This year, 2019, the focus is on passing Articles that will amend the current zoning bylaws in order to implement the housing vision that was approved in 2015.
The cost of building a residential unit, single or multi-family, correlates directly, if not precisely, with its cost to resident tenants or owners. The following study and data (using Assessor’s data) demonstrates that higher density housing is more affordable than single-family housing. Whether you look at the median cost of all housing across the Town or the unit costs of the newer, more expensive, apartments built in the last decade, density yields lower prices. The town wide median is $438,900 per unit.
The newest projects (420-440 Mass Ave., Brigham Square and Arlington 360) range from $249k per unit to $412K per unit. These three developments alone contributed 414 new units of housing to the Town.
Discussions of “affordability” represents a spectrum of terms. Units can be affordable because zoning and market conditions allow the units to be built for less money than a single family home. Or they can be affordable because the builder has received subsidies that reduce the cost. Or they can be affordable, as in the case of inclusionary zoning, because the permission to build is contingent on at least some of the units being “permanently” (99 years) available to qualified tenants or buyers based on legal restrictions.
Massachusetts’ 2020 Economic Development Bill included a set of housing choice provisions: these require communities served by the MBTA to provide a district of reasonable size where multi-family housing is allowed by right. The law gives us significant flexibility to design a district that best suits our needs, but the district must allow housing suitable for families with children, without age restrictions, and at a rate of at least 15 dwelling units per acre. Arlington is one of 175 MBTA communities in Massachusetts that share in the responsibility for meeting these requirements.

The law requires a “district of reasonable size”, but what does that mean? Throughout much of 2021 the Massachusetts Department of Housing and Community Development (DHCD) worked on a set of supporting regulations that set the district requirements according to the type of transit service a community has, the number of existing homes in the community (as of the 2020 Census), and the amount of developable land near transit stations. The specifics vary by community, but here is what the requirements mean for Arlington:
- Our district needs a capacity of (at least) 2,046 homes. This isn’t a requirement to build 2,046 additional homes; instead, it reflects the total number of homes that district might contain in the future. For example, if a parcel with a two-family home were rezoned to allow a three-family home, that single parcel would have a capacity of three.
- Our district needs to allow multi-family housing by right. “By right” means that the development only requires a building permit, where the Building Inspector determines whether the project complies with zoning and building codes. While Arlington allows multi-family housing (three or more dwellings on a single parcel) in some areas, such projects are not allowed by right.
- Our district needs to allow (at least) 15 dwellings/acre. This is more or less in line with the density of the streetcar suburbs that were built in East Arlington during the 1920s. Although portions of Arlington likely meet the density requirement, none of these areas currently comply, as they don’t allow multi-family housing to be built by right.
- Our district needs to be at least 32 acres, but it could be larger. We have flexibility here, as we’ll discuss in a moment.
- Finally, due to the lack of developable land around the Alewife T station, Arlington is free to locate its multi-family district (or districts) anywhere in town. We’re not tied to any particular geographic location.
The new law’s requirements provide Arlington with a great deal of flexibility. We’re free to place our district (or districts) anywhere in town, and we’ll be able to choose from a variety of options as long as they meet the requirements set forth above. For example, providing the capacity of 2,046 homes in the minimum district size of 32 acres would give us a density of 64 dwellings/acre; roughly the scale of mid-rise apartment buildings. On the other hand, if we went with the minimum density of 15 dwellings/acre, we’d have a 135 acre district that allowed smaller multi-family homes. Our district can be anywhere within this range; we also have the option of having multiple districts, with smaller multi-family buildings in some areas of town and larger multi-family buildings in others.
Arlington has a track record of producing thorough and comprehensive planning documents, such as our Master Plan, Net Zero Action Plan, Sustainable Transportation Plan, and Housing Production Plan. These plans contain plenty of building blocks that could be used to formulate a compliant multi-family district. Viewed in that light, the MBTA community requirements are an opportunity to meet some of the goals we’ve already set for ourselves; we just have to go about it in a way that satisfies the law’s new requirements.
Arlington has one unique consideration, which doesn’t apply to most MBTA communities. In 2020, Arlington’s Town Meeting sent a home rule petition to the state legislature, asking for permission to regulate the use of fossil fuels in new building construction; it’s an important component of our plan to become carbon-neutral by 2050. A number of other communities in the Commonwealth filed similar petitions, and the legislature responded by establishing a pilot program: ten cities and towns will be allowed to enact “fossil fuel bans”, but only if they (a) have 10% subsidized housing, (b) achieve safe harbor via compliances with an approved housing production plan, or (c) establish a multi-family district of reasonable size by February 2024. Arlington doesn’t meet the subsidized housing requirement (only 6.54% of our homes are on the subsidized housing inventory), and we’re unlikely to gain safe harbor status during the next year; our most viable path to participation hinges on meeting the multi-family requirements.
In summary, the multi-family requirement for MBTA communities creates new requirements for Arlington, while also presenting us with new opportunities: the opportunity to meet planning goals, the opportunity to meet sustainability goals (e.g., by regulating fossil fuel use in new construction), and the opportunity to reimagine how we do multi-family housing in Arlington as our town moves forward into the twenty-first century.
It’s New Year’s eve and I’m determined to get my third and final “Arlington 2020” article written and posted before 2021 rolls in. I’ve written these articles to paint a picture of Arlington’s housing stock, and how our housing costs have changed over time. The first article looked at the number of one-, two-, and three-family homes and condominiums in Arlington. The second article looked at how the costs of these homes has varied over time.
In this article, I’m going to look at the per-unit costs for our different housing types. The per-unit cost is just the assessed value, divided by the number of units. For condos and single-family homes, the unit cost is simply the assessed value. For two-family homes, it’s the assessed value divided by two. For a ten-unit apartment building, it’s the assessed value divided by ten. We’ll look at the price ranges within housing types, as well as the general differences between them.
The information here doesn’t include residential units from Arlington’s 76 mixed-use buildings. (My copy of the assessor’s data doesn’t distinguish between residential and commercial units in these buildings; I’ll try to say more about them in 2021.) It also omits units owned by the Arlington Housing Authority.
Condominiums
Condominiums provide the most variety and cost diversity. A condo can be half of a duplex, or part of a much larger multi-family building. The low end of the scale tends to be 500–600 square foot units that were built in the 1960’s; the high end tends to be more spacious new construction.

This graph is a histogram, as are the others in this article. The horizontal axis shows cost per unit, and the vertical axis shows the number of units in each particular cost band.
The per-unit price distribution is
min | 1st quartile | median | mean | 3rd quartile | max |
$92,600 | $344,450 | $473,100 | $500,086 | $640,850 | $1,241,000 |
Single-family homes
Single family homes are heavily concentrated around the $700,000 mark. There’s very little available for less than a half million dollars.

Per unit rice distribution:
min | 1st quartile | median | mean | 3rd quartile | max |
$103,700 | $679,900 | $771,900 | $825,172 | $908,750 | $3,232,700 |
The $103,700 single-family home deserves some explanation. The property straddles the border between Arlington and Lexington; it appears that the $103k assessed value reflects the portion that lies in Arlington.
Two-family Homes
Two-family homes are the bread and butter of East Arlington; they’re also common in the blocks off Mass ave near Brattle Square and the heights. Many of these homes are older and non-conforming, and they’re gradually being renovated and turned into condominiums.
As a reminder, these are costs per unit (as opposed to the cost of the entire two-family home).

Per unit price distribution:
Min | 1st quartile | median | mean | 3rd quartile | max |
$209,050 | $440,550 | $472,000 | $479,175 | $508,588 | $1,140,450 |
Three-family Homes
Unlike Dorchester and Somerville, three-family homes are not a staple of Arlington’s housing stock. But we have a few of them. Most were built between 1906 and 1930.

Per-unit price distribution:
Min | 1st quartile | median | mean | 3rd quartile | max |
$227,567 | $313,733 | $336,950 | $344,292 | $362,600 | $719,000 |
Small Apartments (4–8 units)
The majority of Arlington’s small apartment buildings were constructed during the first half of the 20th century. The most recent one dates from 1976.

Per-unit price distribution:
Min | 1st quartile | median | mean | 3rd quartile | max |
$154,950 | $202,950 | $227,775 | $231,619 | $255,775 | $403,875 |
Large Apartments (9+ units)
You’ll see three outliers in the per unit-cost distribution for large apartment buildings. These correspond to the newest apartment complexes in Arlington: The Legacy (2000), Brigham Square (2012), and Arlington 360 (2013).

Per-unit price distribution:
Min | 1st quartile | median | mean | 3rd quartile | max |
$117,013 | $141,383 | $153,006 | $195,789 | $170,973 | $474,631 |
All combined
Finally, we’ll put it all together in one picture, representing nineteen-thousand and some odd homes in town.

Per-unit price distribution:
Min | 1st quartile | median | mean | 3rd quartile | max |
$92,600 | $417,175 | $555,825 | $587,975 | $759,900 | $3,232,700 |
While there are lower-priced options available, a person coming to Arlington should expect to buy (or rent) a property that costs just shy of half a million dollars (or more).
Here is a spreadsheet with the cost distributions mentioned in this article.
For Arlington’s Nov 2020 Special Town Meeting, my colleague Ben Rudick filed the following warrant article:
ARTICLE 18: ZONING BYLAW AMENDMENT/IMPROVING RESIDENTIAL INCLUSIVENESS, SUSTAINABILITY, AND AFFORDABILITY BY ENDING SINGLE FAMILY ZONING
To see if the Town will vote to amend the Zoning Bylaw for the Town of Arlington by expanding the set of allowed residential uses in the R0 and R1 zoning districts with the goal of expanding and diversifying the housing stock by altering the district definitions for the R0 and R1 zoning districts; or take any action related thereto.
(Inserted at the request of Benjamin Rudick and ten registered voters)
The Inspiration
Our goal with Article 18 is to allow two-family homes, by right, in two districts that are exclusively zoned for single-family homes. This is similar to what city of Minneapolis and the state of Oregon did in 2019. The motivations fall into three broad categories: the history of single-family zoning as a mechanism for racial segregation, environmental concerns arising from car-oriented suburban sprawl, and the regional shortage of housing and its high cost. We’ll elaborate on these concerns in the following paragraphs, and end with a proposed main motion.
Single-family zoning as a mechanism for racial segregation. Single-family zoning began to take hold in the United States during the 1920’s, after the Supreme Court declared racially-based zoning unconstitutional in 1917. Secretary of Commerce Herbert Hoover encouraged cities and towns to adopt single-family zoning ordinances, effectively substituting segregation based on race with segregation based on economic status. The idea was furthered by the Home Owners Loan Corporation of America’s (HOLC’s) redlining maps (created between 1935 and 1940), and the Federal Housing Administration’s (FHA’s) mortgage insurance policies from 1934–1968. The HOLC designated areas with black populations as “hazardous” and actuarially risky, and the FHA used these maps when making underwriting decisions. In short, the FHA was in the business of underwriting loans to white home buyers in white neighborhoods.
Of Arlington’s 7,998 single-family homes, 4,080 (51%) were built during 1934–1968 (per Arlington Assessor’s data). The FHA was the primary mortgage underwriter during this time, and we believe it is reasonable to expect that a substantial number of these homes were originally purchased with FHA mortgages. Put another way, most of our single-family housing was likely built according to FHA guidelines of “avoiding inharmonious mixing or races”, aka segregation. Arlington’s population was 99% white in 1970 and even higher during previous decades. We certainly met the criteria of being a white community.
We believe it’s important to recognize this history, and to have a conversation about how we might restore a balance of fairness.
Environmental concerns. When compared with their multi-family counterparts, single-family homes are less energy efficient, more land intensive, and are associated with higher carbon emissions due to ransportation. Car transportation is a useful analogy; having everyone drive in their own car is more carbon-intensive than carpooling (two-family homes), which in turn is more carbon-intensive than taking the bus (3+ unit buildings). Maps created by Berkeley’s Cool Climate Project show this in a clear way: per household carbon emissions are lower in urban areas than they are in the surrounding suburbs. (Note that authors of the Berkeley report do not advocate getting rid of suburbs, but they do state that suburbs will require different carbon reduction strategies than urban areas).
We believe it is more environmentally responsible to build additional homes on sites that are already developed, rather than (say) going out to the suburban fringes along route 495 and clearing half-acre lots. If we do not provide ample housing within Arlington and other inner-ring suburbs, new workers will likely live further out and have longer, more carbon-intensive commutes. Climate change is a crisis, and our response must involve changing how we live, and that includes ending the twentieth-century pattern of suburban sprawl.
The shortage and high cost of housing. Since 2010, the fifteen cities and towns in the Metro Mayor’s coalition have added 148,000 jobs and 110,000 new residents, but have only permitted 32,500 new homes; this has added to a housing shortage that’s been growing for decades. The imbalance between supply and demand has contributed to rising prices and a very hot market. In 2019, the median sale price for homes in Arlington was $821k. We do not expect construction to be a complete solution to Arlington’s housing costs, but we do believe it is a necessary step in meeting rising demand and counteracting rising costs.
Article 18 is most likely to influence the cost of newly-constructed homes. Newly-constructed single-family homes typically sell in the $1.2M–1.5M range while condominiums in new duplexes typically fall into the $800k–1.1M range. These duplex units are not cheap, but they offer a price point roughly four hundred thousand dollars less than new single-family homes.
We also believe our proposal directly addresses three concerns raised by last year’s multi-family proposal (aka 2019 ATM Article 16):
- Concentration. Last year’s proposal would have concentrated new housing around the town’s business corridors, and Massachusetts Avenue in particular. Article 18 will spread new housing across the majority of the town, as 60% of Arlington’s land area (and 80% of its residentially-zoned land) is currently zoned exclusively for single-family homes (figures provided by Arlingtons Department of Planning and Community Development).
- Height and Shadows. Last year’s proposal would have allowed taller buildings along the commercial corridors; there were concerns about increased height, and the shadows new buildings might cast. Article 18 makes no changes to our zoning bylaw’s dimensional regulation; homes built under this bylaw could be no larger than homes we already allow, by right.
- Displacement. Last year’s proposal drew concerns that businesses and apartment renters would be displaced by new construction. Article 18 applies to districts that are exclusively zoned for single-family homes. 95% of our single-family homes are owner-occupied, and can only be rebuilt or renovated with the owner’s consent. We believe this minimizes any risk of displacement.
Finally, we expect the board will be interested in the number of homes that might be added under this proposal, and the potential impact on the school system. We’ll attempt to address those questions here.
Arlington’s report on Demolitions and Replacement Homes states an average of 27 rebuilds or substantial renovations per year, averaged over a ten year period. For the purpose of discussion, we expect the number of new homes added under this proposed bylaw change to be somewhere between half and double that amount, or 14–54 homes/year. Arlington has 7,998 single-family homes so this is a replacement rate well under 1%/year. It will be nothing like the 500 new homes/year that Arlington was building during the 1920s.
Assessing the impact on the school system amounts (in part) to estimating the number of new school students created by the addition of 14–54 homes/year. One can conceivably see this playing out according to three scenarios. Scenario 1 is simply “by the numbers”. The Housing section of Cambridge’s Alewife District Plan estimates one new student for every 17 new homes (see pg. 145), and the economic analysis of Arlington’s industrial districts gives a net increase of one new student for every 20 new condominiums (see slide 49). Both work out to an increase of 1–3 students per year for the addition of 14–54 homes. This is substantially smaller than past enrollment growth, and something the schools should easily be able to handle.
Second, one could imagine a scenario where elementary school enrollment is in modest decline, as students who entered Arlington public schools in the middle of the last decade move on to middle and high school. Here, new elementary students would utilize existing classroom space, which was created to accommodate students that came before them. It’s a scenario where enrollment stabilizes and doesn’t increase much.
Third, one could picture a scenario where any new home is immediately filled with children. Under this assumption it’s likely that any turnover of single-family homes or suitably-sized condominiums would attract families with children. With 7,998 single-family homes, there is little to prevent another demographic turnover from causing another increase in school enrollment, even if Arlington never adds a single additional home.
In summary, the effects on school enrollment are not easy to predict and several outcomes are possible. Ultimately, this will depend on Arlington’s attractiveness to young families, and our ability to retain these families once their students graduate from school.
Our Proposal to the Arlington Redevelopment Board
We propose that the Zoning Bylaw of the Town of Arlington be amended as
follows:
- By adding the letter “Y” to the “Use Regulations for Residential Districts” table in Section 5.4.3, in the row labeled “Two family dwelling, duplex”, and under the columns labeled “R0” and “R1”;
- By adding the letters “SP” to the “Use Regulations for Residential Districts” table in Section 5.4.3, in the row labeled “Six or more units in two-family dwellings or duplex dwelling on one or more contiguous lots”, and under the columns labeled “R0” and “R1”,
Class of Use | R0 | R1 | R2 |
Two-family dwelling | Y | Y | Y |
Six or more units in two-family dwellings or duplex dwelling on one or more contiguous lots | SP | SP | SP |
and, by making the following changes to the definitions of the R0 and R1 districts in Section 5.4.1(A):
R0: Large Lot Single-FamilyResidential District. The Large Lot Single-FamilyResidential District has the lowest residential density of all districts and is generally served by local streets only. The Town discourages intensive land uses, uses that would detract from the single-family residential character of these neighborhoods, and uses that would otherwise interfere with the intent of this Bylaw.
R1: Single-FamilyR1 Residential District. The predominant uses in R1 are single- and two-family dwellings and public land and buildings. The Town discourages intensive land uses, uses that would detract from the single-family residential character of these neighborhoods, and uses that would otherwise interfere with the intent of this Bylaw.
Related Materials
Our Redevelopment Board Hearing
We presented Article 18 to the redevelopment board on Oct 26th. You can watch the presentation below.
The Redevelopment Board did their deliberations and voting two days later, on October 28th. Their report is available from the Town website.
At least three members of the board were supportive of the effort, but they ultimately voted to recommend this action. I attribute the no action vote to two factors. First, in January 2020 the Redevelopment board agreed to perform a public engagement campaign, to educate residents on housing issues facing the town, and to gather input on how those issues could be addressed. The public engagement effort hasn’t started yet (mainly due to the pandemic), and the board was hesitant to recommend favorable action without doing an outreach campaign first.
Second, the board was interested in attaching standards to single- to two-family conversions, and didn’t feel there was enough time in this town meeting cycle to devise an appropriate set of standards. They were interested in design requirements and collecting payments to an affordable housing trust fund. Standards are interesting idea, and worthy of further consideration. For my own taste, I’d be more inclined to ask for performance standards that tied in to Arlington’s Net Zero Action plan.
So, we are going to take the ARB’s feedback, work on the idea some more, and resubmit during a future town meeting.
It’s January 2023, and as we do every year, folks in Arlington are taking out nomination papers, gathering signatures, and strategizing on how to campaign for the town election on Saturday April 1st. The town election is where we choose members of Arlington’s governing institutions, including the Select Board (Arlington’s executive branch), the School Committee, and — most relevantly for this post — Town Meeting.
If you’re new to New England, Town Meeting is an institution you may not have heard of, but it’s basically the town’s Legislative Branch. Town Meeting consists of 12 members from each of 21 Precincts, for 252 members total. Members serve three-year terms, with one-third of the seats up for election in any year, so that each precinct elects four representatives per year (perhaps with an extra seat or two, as needed to fill vacancies). For a deeper dive, Envision Arlington’s ABC’s of Arlington Government gives a great overview of Arlington’s government structure.
As our legislative branch, town meeting’s powers and responsibilities include:
- Passing the Town’s Operating Budget, which details planned expenses for the next year.
- Approving the town’s Capital Budget, which includes vehicle and equipment purchases, playgrounds, and town facilities.
- Bylaw changes. Town meeting is the only body that can amend the towns bylaws, including ones that affect housing and commercial development.
Town Meeting is an excellent opportunity to serve your community, and to learn about how Arlington and its municipal government works. Any registered voter is eligible to run. If this sounds like an interesting prospect, I’d encourage you to run as a candidate. Here’s what you’ll need to do:
- Have a look at the town’s Information for new and Prospective Town Meeting Members.
- Contact the Town Clerk’s office to get a set of nomination papers. You’ll need to do this by 5:00 PM February 8th, 2023 at the latest.
- Gather signatures. You’ll need signatures from at least ten registered voters in your precinct to get on the ballot (it’s always good to get a few extra signatures, to be safe).
- Return your signed nomination papers to the Clerk’s office by February 10, 2023 at noon.
- Campaign! Get a map and voter list for your precinct, knock on doors, and introduce yourself. (Having a flier to distribute is also helpful.)
- Vote on Saturday April 1st, and wait for the results.
Town Meeting traditionally meets every Monday and Wednesday, from 8:00 — 11:00 pm, starting on the 4th Monday in April (which is April 24th this year), and lasting until the year’s business is concluded (typically a few weeks).
If you’d like to connect with an experienced Town Meeting Member about the logistics of campaigning, or the reality of serving at Town Meeting, please email info(AT)equitable-arlington.org and I’d be happy to make an introduction.
During the past few years, Town Meeting was our pathway to legalizing accessory dwelling units, reducing minimum parking requirements, and loosening restrictions on mixed-use development in Arlington’s business districts. Aside from being a rewarding experience, it’s a way to make a difference!
This is the second in a series of “Arlington 2020” articles. The first article looked at the number of one-, two-, and three-family homes and condominiums in Arlington, and how that housing stock has changed over time. This article will examine changes in the value of those properties. We’re going to look at “value” through the lens of property assessments, so we should start with an explanation of what property assessments are and how they’re used.
A property assessment is simply the Town Assessor’s best estimate of what a property is worth, based on market values. The assessor’s office inspects properties every ten years; during intervening years, assessments are adjusted based on sale prices of similar homes in a given tax neighborhood. For all practical purposes, assessed values tend to trail market values by two years. In my neighborhood, property assessments are spot on — my house was assessed at $501,000 in 2020; during 2018, sales of similar homes in the neighborhood ranged from $495,000 to $520,000.
Condominiums have a single assessed value, which includes land and buildings. Otherwise, assessed values are broken down into land value, building value, and yard items (e.g., a garage or a shed).
Assessed values are used to determine the tax rate. The assessors page on the town website has calculations in worksheet form, but for all practical purposes, it’s just a division problem. One takes the total tax levy and divides by the sum of all property assessments (in thousands of dollars), and that’s the tax rate. An individual’s taxes are the assessed value of their property (in thousands of dollars) multiplied by the tax rate. If an individual owns (say) 1% of the assessed value in town, that individual will pay 1% of the property tax levy.
The main point is that assessed values are based on market values, but with a two-year lag. Consequently, we can use them as a way to see how home prices have changed over time.
With that background information out of the way, we can look at some numbers. Here’s a graph of the median assessed values for condominiums, one-family, two-family, and three-family homes from 2013 through 2020. (the “median” is a value such that half of the assessments are above, and half are below).

year | Condominium | Single Family | Two-family | Three-family |
2013 | $297,800 | $472,850 | $532,650 | $581,600 |
2014 | $300,150 | $484,400 | $530,000 | $574,800 |
2015 | $318,200 | $507,900 | $572,000 | $616,300 |
2016 | $351,050 | $546,300 | $623,150 | $673,550 |
2017 | $357,750 | $581,200 | $663,900 | $714,800 |
2018 | $395,400 | $618,800 | $732,100 | $787,600 |
2019 | $463,250 | $701,550 | $851,200 | $897,500 |
2020 | $473,100 | $771,900 | $944,000 | $1,010,850 |
%change | 58.87% | 63.24% | 77.23% | 73.81% |
As one would expect, two-family homes are worth more than single-family, and three-family are worth more than two. Condominiums have a lot of variety; they could be half of a duplex, or a single unit in an apartment building. But a general upward trend is clearly evident.
These values are straight out of the assessor’s database, and not adjusted for inflation. The Bureau of Labor Statistic’s inflation calculator shows 12% inflation between 2013 and 2020; the %change is pretty considerable, even if one deducts 12% for inflation.
Next, I’d like to dig further into the 1–3 family assessments, by breaking them down into the value of land vs the value of buildings, and showing how that’s changed over time.
Single-family homes:

year | Land value | Building value | Total assessed value |
2013 | $243,700 | $226,300 | $472,850 |
2014 | $253,750 | $227,050 | $484,450 |
2015 | $272,700 | $229,900 | $507,900 |
2016 | $296,400 | $243,950 | $546,400 |
2017 | $326,400 | $246,400 | $581,250 |
2018 | $360,900 | $248,100 | $618,800 |
2019 | $440,400 | $250,400 | $701,600 |
2020 | $448,600 | $316,300 | $771,900 |
%change | 84.08% | 39.77% | 63.24% |
Two-family homes:

year | Land value | Building value | Total assessed value |
2013 | $202,500 | $320,550 | $532,650 |
2014 | $212,250 | $307,800 | $530,000 |
2015 | $256,400 | $309,800 | $572,000 |
2016 | $262,500 | $349,400 | $623,150 |
2017 | $307,000 | $350,700 | $663,900 |
2018 | $352,500 | $373,900 | $732,100 |
2019 | $478,300 | $374,850 | $851,700 |
2020 | $454,500 | $486,100 | $944,000 |
%change | 124.44% | 51.65% | 77.23% |
Three-family homes:

year | Land value | Building value | Total assessed value |
2013 | $200,100 | $377,900 | $581,600 |
2014 | $209,100 | $364,100 | $574,800 |
2015 | $249,800 | $366,550 | $616,300 |
2016 | $259,950 | $412,350 | $673,550 |
2017 | $298,100 | $412,500 | $714,800 |
2018 | $343,050 | $438,800 | $787,600 |
2019 | $459,000 | $440,100 | $897,500 |
2020 | $440,100 | $578,450 | $1,010,850 |
%change | 119.94% | 53.07% | 73.81% |
There are several things worth pointing out in these breakdowns.
First, note that the land and building values “jump” a bit between 2019–2020. 2020 was one of our full reassessment years, so I’m willing to attribute this to a periodic course correction. The total increase is generally linear, but the land/building composition has changed.
Second, the median land value for single-family homes is higher than the median building value, for all years between 2013–2020.
Third, most of the increases come from changes in land value. I believe this comes down to location, location, and location. Arlington has a well-respected public school system, and it’s close to universities and tech centers is Cambridge and Boston, and office parks in Lexington, Waltham, and Burlington. City amenities are close at hand.
So what does one do about our rising home prices, and in particular, the rising value of land? The first (and perhaps default) answer is to do nothing. Rising property values are a boon to homeowners who purchased a capital asset (i.e., a house) in the past, and have seen its value appreciate over time. The downside of doing nothing is that each year, increasing housing prices create an ever-increasing income threshold for new residents.
An alternative approach would be to allow more (and smaller) units to be built on each lot. This requires reconstruction or redevelopment, but it allows the cost of land to be amortized among several households. More units/lot means more people and more density, but it reduces the income threshold for buying in to Arlington. (Note that the per-unit cost for three-family homes is lower than the per-unit cost for two-family homes. Similarly, the per-unit cost for two-family homes is lower than the cost of a single-family home).
A third article will look at the distribution of housing prices in Arlington, and how the distribution varies by housing type.
Here is a spreadsheet of data shown in this post.
State Senator Cindy F. Friedman has written a letter to Town Meeting Members supporting Warrant Article 12 and a meaningful MBTA Communities Plan. She writes:
We all want Arlington and Massachusetts to remain welcoming, accessible places to live. In addition to our deficit of housing, I recognize the importance of encouraging smaller, more sustainable housing in walkable areas. Arlington’s Warrant Article 12 will provide a meaningful framework for making progress in these areas. The problems we are experiencing now —out of reach housing prices for new construction and existing homes — exacerbate the crisis and are seriously threatening the economic vibrancy of our communities.
To read Friedman’s full letter, click here for the PDF.