The presentation, dated March 11, 2019, includes slides used to present the information necessary to understand the rationale for zoning changes, the location of the zoning areas under consideration and the charts, tables and maps that help describe the situation. The proposed zoning changes, especially articles 6, 7, 8, 11 and 16, only cover changes affecting about 7% of the Town, those parts of the Town that are currently zoned R4-R7 and the B zoning districts.
Related articles
This timely report on the question of affordable housing vs. density comes from the California Dept. of Housing & Community Development and mirrors the situation in the region surrounding Arlington MA.
Housing production has not kept up with job and household growth. The location and type of new housing does not meet the needs of many new house- holds. As a result, only one in five households can afford a typical home, overcrowding doubled in the 1990’s, and too many households pay more than they can afford for their housing.
Myth #1
High-density housing is affordable housing; affordable
housing is high-density housing.
Fact #1
Not all high density housing is affordable to low-income families.
Myth #2
High-density and affordable housing will cause too much traffic.
Fact #2
People who live in affordable housing own fewer cars and
drive less.
Myth #3
High-density development strains public services and
infrastructure.
Fact #3
Compact development offers greater efficiency in use of
public services and infrastructure.
Myth #4
People who live in high-density and affordable housing
won’t fit into my neighborhood.
Fact #4
People who need affordable housing already live and work
in your community.
Myth #5
Affordable housing reduces property values.
Fact #5
No study in California has ever shown that affordable
housing developments reduce property values.
Myth #6
Residents of affordable housing move too often to be stable
community members.
Fact #6
When rents are guaranteed to remain stable, tenants
move less often.
Myth #7
High-density and affordable housing undermine community
character.
Fact #7
New affordable and high-density housing can always be
designed to fit into existing communities.
Myth #8
High-density and affordable housing increase crime.
Fact #8
The design and use of public spaces has a far more
significant affect on crime than density or income levels.
See an example of a “case study” of two affordable housing developments in Irvine CA, San Marcos at 64 units per acre.

San Paulo at 25 units per acre.

Both are designed to blend with nearby homes.
(by Steve Revilak)
In 2021 the Massachusetts State Legislature passed the MBTA Communities act, which requires cities and towns served by the MBTA (aka “MBTA Communities”) to create districts where multi-family housing can be built by-right, without a disretionary approval process. The law was intended to help address the Commonwealth’s housing shortage, and to encourage more transit-oriented development. Building housing near transit and walkable areas has a lot of environmental benefits; it let’s people take trips without driving, lessens congestions, and cuts down on greenhouse gas emissions. It’s a solid strategey.
Arlington created its multi-family districts in the fall of 2023 and the Attorney General’s office approved them in June 2024. The laws have been on the books for just over a year — what kind of a difference are they making in Arlington?
2024 was a slow year for the MBTA Communities act in Arlington; there was one application which turned a two-family home on Belknap St into a pair of two-family homes, for a net change of two additional dwellings. 2025 has brought more activity. There are four applications under the review by the Arlington Redevelopment Board but none have been approved yet. These are:
- 225 Broadway, to convert a two-family home into a four-family,
- 126 Broadway, to convert a two-family home into a mixed use building with space for a business on the first floor, and 14 apartments,
- 18 Grafton, to convert a one-family home into a four-family, and
- 9-11 Robbins Road to convert a two-family home to nine apartments
There was an additional application to convert four apartments to five at 259 Broadway, but the applicant withdrew after their first hearing.
If all of these projects are approved, the net change will be an additional 26 homes, which represents a 0.1% increase relative to the 20,460 dwellings that Arlington had as of the 2020 census. It’s been a very slow trickle.
The MBTA Communities act was a meaningful reform which is just starting to make a difference. It’s bringing proposals for smaller multi-family homes that used to be the mainstay of our housing stock, but are generally rare today. However, the MBTA Communities Act is only one tool and Massachusetts will have to do more in order to build the 222,000 homes we need.
Thanks to so many of you who came out Monday evening for the demonstration in support of the MBTA Communities proposal before the Arlington Redevelopment Board meeting! Over 20 people were there – a substantial and notable showing, especially on such short notice. Paulette Schwarz took some photos of the demonstration early in the evening which she kindly shared with us.




Beginning last July, 2020, the Town of Arlington and community groups in the town are sponsoring a number of webinars and zoom conversations addressing the need for affordable housing programs in Arlington. Several factors contribute to the Arlington housing situation: diversity of housing types, prices, diversity of incomes, availability of housing subsidies, rapid growth in property values that greatly exceed the rate of growth of income.
But racism, both historic and current, continues to stand out as a significant force contributing to the difficult housing situation.
One of the first public discussion in the Town on this subject was organized by Arlington Human Rights Commission (AHRC) on July 8, 2020. View it here:
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.
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.
Accessory Dwelling Units (aka “granny flats”)
The following information was presented to the Arlington Redevelopment Board in October, 2020 by Barbara Thornton, TMM, Precinct 16
This Article proposes to allow Accessory Dwelling Units, “as of right”, in each of the 8 residential zoning districts in Arlington.
Why is this zoning legislation important?
Arlington is increasingly losing the diversity it once had. It has become increasingly difficult for residents who have grown up and grown old in the town to remain here. This will only become more difficult as the effects of tax increases to support the new schools, including the high school, roll into the tax bills for lower income residents and senior citizens on a fixed income. For young adults raised in Arlington, the price of a home to buy or to rent is increasingly out of reach.
Who benefits from ADUs?
- Families benefit from greater flexibility as their needs change over time and, in particular providing options for older adults to be able to stay in their homes and for households with disabled persons or young adults who want additional privacy but still be within a family setting.
- Residents seeking an increase in the diversity of housing choices in the Town while respecting the residential character and scale of existing neighborhoods; ADUs provide a non-subsidized form of housing that is generally less costly and more affordable than similar units in multifamily buildings;
- Residents wanting more housing units in Arlington’s total housing stock with minimal adverse effects on Arlington’s neighborhoods.
What authority and established policy is this built on?
Arlington’s Master Plan is the foundational document establishing the validity and mission for pursuing the zoning change that will allow Accessory Dwelling Units.
Under Introduction in Part 5, Housing and Residential Development, the Master Plan states: Arlington’s Master Plan provides a framework for addressing key issues such as affordability, transit-oriented residential development, and aging in place.
The Master Plan states that the American Community Survey (ACS) reports that Arlington’s housing units are slightly larger than those in other inner-suburbs and small cities. In Arlington, the median number of rooms per unit is 5.7. There is a great deal of difference in density and housing size among the different Arlington neighborhoods. The generally larger size of homes makes it easier to contemplate a successful move to encourage ADUs.
What do other municipalities do?
According to a study (https://equitable-arlington.org/2020/02/16/accessory-dwelling-units-policies/), by 2017 65 out of 101 municipalities in the greater Boston (MAPC) region allowed Accessory Dwelling Units by right or by special permit. The average number of ADU’s added per year was only about 3. But by 2017, Lexington had 75 ADUs and Newton had 73. Both of these communities were among about 10 “as of right” municipalities in the MAPC region. This finding suggests that communities with more restrictions are less likely to see any significant affordable housing benefits.
Even in the midst of a housing crisis in this region, according to Amy Dain, housing expert, (https://equitable-arlington.org/2020/02/18/zoning-for-accessory-dwelling-units/) most municipalities still have zoning laws that restrict single family home owners from creating more affordable housing.
And this is despite the fact that, as according to Banker & Tradesman, March 10, 2020: https://www.bankerandtradesman.com/63-percent-in-greater-boston-back-adus/, 63% of people in the region approve of ADUs. California has recently passed strong pro-ADU legislation. A study by Zillow further corroborated this strong interest in communities across the US, including our region. https://equitable-arlington.org/2020/03/10/adu-popularity/.
Learn more about Accessory Dwelling Units/ “Granny Flats” here: https://planning.org/knowledgebase/accessorydwellings/

You may not know who your Town Meeting Members are. You may not even know what precinct you live in. We’re here to help!
What’s My Precinct?

This PDF map of Arlington is divided by precinct. You may need to zoom in to see your precinct.
Who Are My Town Meeting Members?
The town of Arlington has a public list of town meeting members and their contact information. Send them an email telling them how you feel, or ask them if you can take a walk and discuss the MBTA Communities Plan.