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
Prepared by: Barbara Thornton with the capable assistance of Alex Bagnall, Pamela Hallett, Patrick Hanlon, Karen Kelleher, Steve Revilak and Jennifer Susse.
As Arlington considers new zoning and other policy decisions to increase the amount of affordable housing in the town, a concern has been raised about the threat of greater costs to the Town’s budget from new people with school age children moving into the town. The concern: additional children in the public schools costs the town more than the additional new property tax revenue the Town collects from the new housing.
This post examines this concern, drawing on data from two recent housing developments, representing 283 units of housing in Arlington, to determine that actually the Town budget gains over 4.5 times the actual cost of paying for the students. According to the most recent 2020 tax bills, the Town expects to collect $1,250,370 in revenue and to spend an additional $269,589 for the new Arlington Public School students living in these developments.
The data suggests that the fear of increased school costs, overwhelming the potential new revenue from new housing construction is not warranted.
For more information, see the full post here.
In the past few weeks, a number of highly respected Arlington organizations have come out in support of the MBTA Communities Plan. Here are a few. We will continue to update this list as it grows.
Greater Boston Interfaith Organization
This week the Greater Boston Interfaith Organization’s Arlington members released a letter of support, stating:
Arlington GBIO members support the Arlington Redevelopment Board’s proposal for the Article 12 of the Fall 2023 Special Town Meeting (MBTA Communities Overlay District) to enact changes in Arlington’s zoning by-laws that will allow for more multi-family housing to be built by right. We support an article that goes beyond the minimum capacity required by law in order to encourage the construction of a meaningful number of additional homes of various sizes beyond the number already present in Arlington.
Arlington Chamber of Commerce
The Arlington Chamber of Commerce sent a letter supporting the MBTA Communities Plan on October 2, saying:
The Arlington Chamber of Commerce believes that the MBTA Working Group’s proposal presents a strong plan for both housing and commercial growth. Arlington’s existing and future small businesses will benefit from an increased customer base and foot traffic resulting from additional housing units.
Division of Diversity, Equity and Inclusion
Arlington’s Division of Diversity, Equity and Inclusion wrote to the Arlington Redevelopment Board in support of the MBTA Communities Plan:
The DEI Division would like to formally voice our support for the Working Group’s effort to create a zoning plan that would allow for more multi-housing opportunities at varied price points across Arlington. Only 9% of Arlington’s land is devoted to multifamily housing, and even where building multi-family housing is allowable, it is not permitted by right. This does not provide suitable conditions for a range of housing types to exist. The current price point of homes in Arlington are far beyond the reach of most residents, regardless of their status as a member of a protected class. stating:
Read the full letter. [PDF]
Clean Energy Future Committee
The Clean Energy Future Committee said passage of the MBTA Communities Zoning was crucial because:
Passage of the MBTA Communities zoning amendment at this fall’s Special Town Meeting is the only viable pathway for Arlington to participate in the State’s Fossil Fuel Free Demonstration Program (Demonstration Program), which would allow implementation of the Clean Heat bylaw and home rule petition passed overwhelmingly by Arlington Town Meeting in 2020. Participation in the Demonstration Program will allow the Town to prohibit the installation of natural gas, oil, propane, and other fossil fuel infrastructure in new buildings and major renovations. Town Meeting sent a clear message in 2020 that enacting the Fossil Fuel Bylaw was a priority, and we–the CEFC, Town administrators, and elected and appointed bodies–have an obligation to act upon that priority; passage of the MBTA Communities zoning amendment is an essential step to carrying out the will of Town Meeting.
Mothers Out Front
As we previously reported, the Arlington chapter of Mothers Out Front supports the MBTA Communities Plan, writing:
A revised zoning by-law to allow for more multi-family housing will reduce pressure to build single family homes on undeveloped land elsewhere in Massachusetts. This safeguards undisturbed ecosystems and provides real alternatives to automotive commutes in the region, reducing both congestion and fossil fuel emissions.
by Alexander vonHoffman, Joint Center for Housing Studies, Harvard University, February 2006
The case study shows that in the 1970s the Town of Arlington completely abandoned its policy of encouraging development of apartment buildings—and high-rise buildings at that—and adopted requirements that severely constricted the possibilities for developing multifamily dwellings. Although members of the elite introduced the new approach, they were backed by rank-and-file citizens, who took up the cause to protect their neighborhoods from perceived threats.
The report outlines an intentional effort using land use and planning tools like zoning and building approvals, to exclude those with less desirable income or racial characteristics from residing in Arlington. Additional perspectives on Arlington’s exclusionary zoning efforts during this period are reported here.
(By Vince Baudoin and James Fleming)
Could Arlington be better using its curb space? Here are some ways the curb can be used to create green infrastructure, promote public safety and accessibility, support sustainable transportation, strengthen business districts, and enable new ‘car-light’ development.
Roughly six inches high and made of concrete or granite, the curb marks the edge of the roadway, channels runoff, protects the sidewalk, and gathers stray leaves. When not assigned any other use, the space in front of the curb it usually serves as free storage for personal automobiles.
Yet the humble curb is a limited resource that can serve the community in many more ways. Have you thought about how your town budgets its curb space? For that matter, has your town thought about how it budgets its curb space?
While Arlington mostly uses its curb space for parking, some areas have other curb uses designed to achieve a specific goal. Consider the streets you use often. Have you seen an unsolved problem, or a missed opportunity, that a different use of the curb could help solve?
Create green infrastructure
The Town has miles of paved roadway. When it rains or snows, water runs into storm drains, carrying salt, oil, and other pollutants with it. The storm drains dump these pollutants directly into long-degraded waterways such as the Mill Brook, Alewife Brook, and the Mystic River. The Public Works department struggles to keep grates clear and drains from overflowing.
One solution: Use the curb for more greenery! The curb can be extended to create a rain garden or tree planting strip. The rain garden helps slow runoff and filter the water before it enters the drain, while trees benefit from additional room for the roots to grow without damaging the sidewalk. A side benefit: narrowing the street encourages drivers to slow down, making neighborhoods safer.

Promote public safety and accessibility
Often, portions of the curb are set aside for public safety purposes. For example, a fire lane provides fire department access to key buildings, such as the high school, shown below. Fire hydrants also enjoy special curb status.

Other times, no-parking zones are established to enhance the free flow of traffic, such as here at Broadway Plaza:

Where pedestrian crosswalks are present, a curb extension is a key safety enhancement. By narrowing the roadway, the curb extension encourages drivers to slow down and look for pedestrians. For pedestrians, it reduces the distance they must cross and prevents cars from parking directly next to the crosswalk and blocking visibility.

Finally, accessible parking spaces can be created along the curb. Arlington has at least 50 designated permit-only on-street parking spaces that provide convenient parking for residents with mobility issues or other disabilities.

Support sustainable transportation
When the curb is mostly used for cars, it is easy to overlook how curbside facilities can enhance other forms of transportation.
In the space of one or two parked cars, this bikeshare station offers space for 11 bikes. However, because it is installed on the roadway, it must be removed every winter so that snow can be cleared. If the curb were extended, the bikeshare station could be used year-round. Another nice feature is bicycle parking: the space to park one car can be used to park six or more bicycles.

A bus stop allows buses to pull to the curb. In some cases, it is appropriate to extend the curb so the bus would stop in the traffic lane; otherwise, it may experience delays when it merges back into traffic.

A bus priority lane provides a dedicated right of way for buses, helping to improve on-time performance. To date, these lanes extend only a few hundred feet into Arlington along Mass Ave. They have proven beneficial in many other communities.

Bike lanes, particularly if they are separated from cars by a physical buffer, greatly enhance the safety and comfort of people traveling on two wheels.
But with a limited roadway width, adding bike lanes is difficult unless the community is flexible enough to consider consolidating curb parking on one side of the street, or moving it to side streets entirely.

Finally, the Town could expand the use of on-street spaces for electric vehicle charging stations, such as this one on Park Ave:

Strengthen business districts
Nowhere is the curb more valuable than in business districts. Businesses thrive when their customers have a convenient way to reach them. Metered parking encourages people to park, do their business, and move along so another patron can take that space. Revenue from parking meters can be spent to improve the business district–for example, by planting flowers and trees.

Metered parking is not the only valuable use of curb space in a business district. Outdoor dining is a way the Town can directly support its restaurants by enabling them to serve additional customers. Here is one example in Arlington Center:

And in Arlington Heights:

Other valuable curb uses in business districts include taxi stands and loading zones. Loading zones in particular are crucial to businesses’ success and help prevent the street from being clogged by early-morning delivery trucks, late-night food-delivery vehicles, and everything in between.
Enable new ‘car-light’ development
With high housing costs and a relatively small commercial tax base, Arlington could benefit from some kinds of development. However, land is valuable and lots are small, so if new buildings are required to have large parking lots, it is very difficult to build new homes and businesses. Plus, large parking lots bring more cars and more traffic. But better curb management can help resolve this dilemma, supporting car-light development that is more sustainable and affordable.
For example, on-street permit parking can enable nearby development with few or no off-street parking spaces. New housing or businesses are a better use of land than parking and will generate more property tax revenue. When parking permits are priced appropriately, they are available to residents who need them but discourage households from adding extra cars they do not need.
Take these hillside houses: access to on-street parking made it possible to build on a steep hillside, where it would have been too expensive and difficult to blast to create off-street parking.

Conclusion
Ask your town leaders if they have a curb management strategy. Is the Town using its limited curb space in support of goals such as green infrastructure, public safety and accessibility, public transportation, local business, and car-light development?

Welcome to the redesigned Equitable Arlington website! We know that Arlington values openness and diversity, a greener future, and vibrant neighborhoods and downtowns—but our current zoning is holding us back. We’re advocating for change because we recognize that the choices we make on zoning and housing policy are key to living those values. We are committed to strengthening our community through respectful dialogue and by listening to our neighbors. Our aim with this site redesign is to share accurate and relevant information to help inform such conversations.

With this redesigned site we have:
- Answered some of the most common questions that have come up in our conversations with other residents.
- Created a zoning dictionary with explanations of many of the terms that pepper zoning discussions.
- Gathered a list of resources, where you’ll find everything from short explainer videos to detailed research
- Developed a history of zoning timeline that shows how Arlington’s history fits into the larger context of government actions.
If you’re not familiar with us, I hope you’ll take a minute to read our mission and why our work matters. I also hope you’ll scroll through to meet us, see some of our smiling faces, and read in our own words why we do this work. We’re renters and homeowners, long time residents and newcomers to town who come to this work with a variety of viewpoints and lived experiences!
We believe Arlington can be a leader in the greater Boston area by the choices we make to create more equitable housing policy. Our local actions have effects that go beyond our borders. Arlington has recognized our power to make an impact and has been a regional leader on many issues.
We can channel this same energy and our values to make sure Arlington has the vibrant sustainable and equitable future we all want. To succeed, we need engaged residents who understand the issues, who can balance competing interests, and who are willing to do the necessary hard work. Please join us in building a more equitable Arlington!

(This post was originally an email message, discussion open space changes proposed by an Affordable Housing article during the Arlington, MA’s 2019 town meeting. It’s also a decent description of our town’s open space laws.)
Sorry this turned out to be a long post. Our open space laws are kind of complicated.
Arlington regulates open space as a percentage of gross floor area, rather than as a percentage of lot area. Let me give a concrete example: say we have a-one story structure with no basement. It covers a certain percentage of the lot area, and has an open space requirement based on the gross floor area (i.e., the interior square footage of the building).
Now, suppose we want to turn this into a two- or three-story structure. The building footprint does not change, and it covers exactly the same percentage of the lot area. However, the open space requirements double (if you’re doing a two-story building), or triple (if you’re doing a three story building). If that quantity of open space isn’t on the lot, then you can’t add the stories.
For this reason, I’d argue that our open space regulations are primarily oriented to limiting the size of buildings. You really can’t allow more density (or taller buildings) without reducing the open space requirements. Alternatively, if the requirements were based on a percentage of lot area, we probably wouldn’t need a reduction. (Cambridge’s equivalent is “Private Open Space”, and they regulate it as a percentage of lot area.)
The other weird thing about our open space laws is that we define “usable open space” in such a way that it’s possible to have none. (Usable open space must have a minimum horizontal dimension of 25′, a grade of 8% or less, and be free of parking and vehicular traffic). I live on a nonconforming lot that does not meet these requirements, as do the majority of homes in my neighborhood.
Suppose I wanted to build an addition, which would increase the gross floor area. With the non-conformity, I’d have to go in front of the ZBA and show that the current lot has 0% usable open space, and that the house + addition produces a lot with 0% usable open space. Because 0% = 0%, I have not increased the nonconformity, and would be able to build the addition, provided that all of the other dimensional constraints of the bylaw are satisified. Although this isn’t directly related to Article 16, it’s an amusing side effect of how the bylaw is written.
Finally, roofs and balconies. Section 5.3.19 of our current ZBL allows usable open space on balconies at least six feet wide, and on roofs that are no more than 10′ above the lowest occupied floor. We allow 50% of usable open space requirements to be satisfied in this manner.
The relevant section of Article 16 would create a 8.2.4(C)(1) which includes the language
Up to 25% of the landscaped open space may include balconies at least 5 feet by 8 feet in size only accessible through a dwelling unit and developed for the use of the occupant of such dwelling unit.
Article 16’s incentive bonuses strike the usable open space requirement, and double the landscaped open space requirement. With only landscaped open space, 5.3.19 doesn’t apply (it only pertains to usable open space). The language I’ve quoted adds something 5.3.19-like, but for landscaped open space. I say 5.3.19-like because it has a 25% cap rather than a 50% cap, and requires eligible balconies to be at least 5’x8′, rather than 6′ wide.
Here are a few pieces of supporting documentation:
- definitions of landscaped and usable open space from our ZBL
- a diagram to illustrate the difference between landscaped and usable open space.
- The text of section 5.3.19 (which is referenced by the diagram)
- the main motion for Article 16
I’ve had an annual ritual for the past several years: obtain a spreadsheet of property assessments from the Town Assessor, load them in to a database, and run a series of R computations against the data. I started doing this for a number of reasons: to understand what was built where (our zoning laws have changed over time, and there are numerous non-conforming uses), the relationship between land and building values, the capital costs of different types of housing, and how these factors have changed over time.
I’d typically compile these analyses into a fact-book of sorts, and email it around to people that I thought might be interested. This year, I’m going to post the analyses here as a series of articles. This first installment contains basic information about Arlington’s low-density housing: single-, two-, and three-family homes, as well as condominiums. Condominiums are something of an oddball in this category — a condominium can be half of a two-family structure, part of a larger residential building, or somewhere in between. There’s a lot of variety.
Here’s a table showing how the number of units has changed over time, since 2013.
| land use | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 |
|---|---|---|---|---|---|---|---|---|
| Single Family | 7984 | 7983 | 7991 | 8000 | 7994 | 7994 | 7998 | 7999 |
| Condominium | 3242 | 3304 | 3367 | 3492 | 3552 | 3662 | 3726 | 3827 |
| Two-family | 2352 | 2332 | 2308 | 2282 | 2263 | 2218 | 2183 | 2139 |
| Three-family | 207 | 201 | 196 | 194 | 193 | 190 | 185 | 182 |
Arlington’s predominant form of housing — the single family home — has stayed relatively static; we’ve added 15 over the last seven years. The number of condominiums has increased significantly: +585 over seven years. That, coupled with the reduction of two-family homes (-213) and three-family homes (-25) leads me to believe that a fair number of rental units have been removed from the market.
Next, I’d like to look at how these homes are spread across our various zoning districts. (The “Notes” section at the bottom of the post explains what the zoning district codes mean).
| Zone | Single-Family | Condo | Two-family | Three-family |
|---|---|---|---|---|
| B1 | 8 | 22 | 13 | 11 |
| B2 | 1 | 4 | 1 | |
| B2A | 1 | 18 | ||
| B3 | 59 | 4 | ||
| B4 | 1 | 59 | 5 | 5 |
| B5 | 1 | 1 | ||
| I | 8 | 18 | 7 | 1 |
| R0 | 502 | |||
| R1 | 6798 | 168 | 200 | 7 |
| R2 | 647 | 1816 | 1881 | 124 |
| R3 | 4 | 39 | 11 | 17 |
| R4 | 23 | 79 | 2 | 3 |
| R5 | 3 | 616 | 5 | 4 |
| R6 | 2 | 686 | 8 | 7 |
| R7 | 1 | 243 | 2 | 1 |
A few points to note:
- R0 is our newest district, which was established in 1991. It consists only of conforming single-family homes.
- R1 is Arlington’s original (per 1975 zoning) single-family district. It’s predominantly single-family homes, but there are a fair number of two-family homes, and even a few three-families. The presence of condominiums suggests additional multi-family homes (that consist of two or more condominiums)
- R2 is predominantly two-, and three-family homes. Although three-family homes are no longer allowed in this district, R2 has the largest number of three-families in town.
- Residential uses are no longer allowed in the industrial (I) districts, but the I districts contain 34 homes. These buildings pre-date the current zoning laws (aka “pre-existing non-conforming”). A good portion of the Dudley street industrial district is a residential neighborhood.
I’m pointing out these conformities (and non-conformities) for a reason. The zoning map (and use tables) dictate what is allowed today, along with specifying a vision for the future. Our zoning bylaw happens to contain a strong statement to this effect: “It is the purpose of this Bylaw to discourage the perpetuity of nonconforming uses and structures whenever possible” (section 8.1.1(A)). Despite the strong statement of intent, it can take decades (if not generations) for a built environment to catch up with the bylaw’s prescriptions.
I’ll finish this post with a breakdown of how condominiums are distributed across the various zoning districts:
| Zone | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | delta |
|---|---|---|---|---|---|---|---|---|---|
| (N/A) | 14 | 15 | 0 | 0 | 0 | 0 | 0 | 0 | -14 |
| B1 | 16 | 16 | 18 | 18 | 18 | 22 | 22 | 22 | 6 |
| B2 | 2 | 2 | 2 | 2 | 4 | 4 | 4 | 4 | 2 |
| B2A | 19 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | -1 |
| B3 | 55 | 55 | 61 | 59 | 59 | 59 | 59 | 59 | 4 |
| B4 | 47 | 47 | 59 | 59 | 59 | 59 | 59 | 59 | 12 |
| I | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 0 |
| R1 | 140 | 144 | 146 | 148 | 150 | 154 | 162 | 168 | 28 |
| R2 | 1355 | 1406 | 1456 | 1518 | 1574 | 1670 | 1723 | 1816 | 461 |
| R3 | 22 | 25 | 28 | 31 | 31 | 37 | 37 | 39 | 17 |
| R4 | 65 | 67 | 67 | 79 | 79 | 79 | 79 | 79 | 14 |
| R5 | 616 | 616 | 616 | 616 | 616 | 616 | 616 | 616 | 0 |
| R6 | 630 | 632 | 635 | 683 | 683 | 683 | 686 | 686 | 56 |
| R7 | 243 | 243 | 243 | 243 | 243 | 243 | 243 | 243 | 0 |
The last column (“delta”) shows the difference between 2013 and 2020. The largest increase occurred in the R2 (two-family) district, followed by R6 (medium-density apartments, where most of the increase took place in 2014) and R1 (single-family).
That it will do it for the first installation. In the next post, we’ll look at how the cost (assessed values, actually) of Arlington’s low density housing has changed over the last seven years.
Here is a spreadsheet, containing the various tables shown in this article.
Notes
Arlington’s zoning map divides the town into a set of districts, and each district has regulations about what kinds of buildings and uses are allowed (or not allowed). The districts mentioned in this article are:
- B1 (Neighborhood Office district)
- B2 (Neighborhood Business distrct)
- B2A (Major Business District)
- B3 (Village Business District)
- B4 (Vehicular-Oriented Business District)
- I (Industrial District)
- R0 (Single-Family, large-lot district)
- R1 (Single-Family Distict)
- R2 (Two-Family District)
- R3 (Three-Family District)
- R4 (Townhouse District)
- R5 (Low-Density Apartment District)
- R6 (Medium-Density Apartment District)
- R7 (High-Density Apartment District)
Arlington’s Zoning Bylaw describes each district in detail (see sections 5.4.2, 5.5.2, and 5.6.2)

(published June, 2019)
Overview
To solve the extraordinarily large deficit in housing for the greater Boston region, over 180,000 units of new housing should come on line in the next few years. This deficit is the result of a rapid expansion in in-migration due to new job creation, with no commensurate increase in housing production for the people taking those new jobs.
The report concludes that zoning is a primary culprit in restricting the development of an adequate housing supply, creating a “PAPER WALL” keeping out newcomers. The cost of this inadequate supply is a huge demand for housing which, in turn, bids up the price for available housing. The following “culprits” are considered: inadequate land area zoned for multi-family housing; low density zoning; age restrictions and bedroom restrictions; excessive parking requirements; mixed use requirements and approval processes. Alternative zoning models are suggested.
Elements such as “Approval Process”, “Mixed Use”, “Village Centers vs Isolated Parcels” and “Building Up or Building Out” are considered.
Researcher Amy Dain reports on two years of research into the regulations, plans and permits in the 100 cities and towns surrounding Boston. The research was commissioned by the Massachusetts Smart Growth Alliance and funded collaboratively with: Citizens’ Housing and Planning Association, Home Builders & Remodelers Association of Massachusetts, Massachusetts Association of Realtors, Massachusetts Housing Partnership, MassHousing, and Metropolitan Area Planning Council.
For the full report see: https://ma-smartgrowth.org/wp-content/uploads/2019/06/03/FINAL_Multi-Family_Housing_Report.pdf
For a power point slide presentation see: https://ma-smartgrowth.org/wp-content/uploads/2019/06/04/DainZoningMFPresentationShare2019.pdf
For the Executive Summary see: https://equitable-arlington.org/wp-content/uploads/2019/07/June-2019-Multi-Family-Housing-Report_Executive-Summary.pdf