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.
Related articles
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.
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.
The new proposal is just the most recent step in a process that reaches back almost a decade, culminating in the Master Plan (2015), the Housing Production Plan (2016) and the mixed-using zoning amendments of 2016. The Town has consistently proposed smart growth: more development along Arlington’s transit corridors to increase the tax base, stimulate local commerce, and provide more varied housing opportunities for everyone, including low and moderate income Arlingtonians. This year’s proposals are no head-long rush into change. Today’s debate is similar to the debate before Town Meeting three years ago. If anything, progress has been frustratingly slow. To realize the Master Plan’s vision of a vibrant Arlington with diverse housing types for a diverse population, we must stay the course on which we have been embarked for so long.
Dave Weinstock, an Arlington resident interested in affordable housing wondered about the concept of “developer math”. The math involved in planning an affordable housing projects is a problem that needs to get solved in order to have anything built here in Arlington, or anywhere. This topic comes up frequently in community discussions about the need for more housing.
Questions are raised around:
- 1- Why build so many units vs. smaller buildings
- 2- Why parking is costly and inefficient use of land
- 3- Why can’t more affordable or all affordable units be built?
- 4- The cost of subsidizing affordable units and how that may translate to higher rental rates/costs, etc.
Dave found a great Architecture and Development firm in Atlanta (Kronberg Urbanists + Architects, based in Atlanta GA) that lays out a nice presentation, includes sample proformas, and real life scenarios that may help us understand this piece of the puzzle better when evaluating any project and how developers may be incented to build certain types of projects or do certain types of work.
Here is a link, reformatted to be within this website, to the presentation, showing the varieties of choices, costs, formulas and outcomes developers consider before deciding if the project can be built: https://equitable-arlington.org/developer-math_kua_071420/
Much of our hope for more affordable housing depends on the market forces of capitalism and the willingness of developers to build for good, not just for profit. But the developers must be able to cover their costs. Many communities are highly skeptical of developers, assuming the community will get tricked, the developer will get greedy and the promised housing will be a disappointment. Trust is needed. But so is verification. We all need to learn the developer math.
What are the math factors that a developer considers before deciding to build affordable housing?

Here is a link to the original presentation. https://www.kronbergua.com/post/mr-mu-let-s-talk-about-math

Massachusetts is experiencing a housing affordability crisis and a climate crisis. For these reasons, Mothers Out Front Arlington supports changes in zoning by-laws that allow greater density in housing near public transit. Mothers Out Front is supportive of the passage of a meaningful MBTA Communities Act that encourages the development of more multi-family housing and a greater diversity of home types in Arlington. 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. In addition, passing this by-law will allow Arlington to participate in the Massachusetts pilot for communities to build fossil fuel-free homes, thus ensuring that new construction in Arlington supports our net-zero climate goals.
Mothers Out Front Arlington respects the public engagement activities that inform the Working Group’s MBTA Communities Act proposal. We appreciate that the Working Group is working with the Town to identify opportunities for developer incentives to encourage public open spaces, mitigate heat islands, and increase the tree canopy. Similarly, the Town’s commitment to maintaining current (and incentivizing higher) zoning requirements for affordable housing also is important to our group. For these reasons, Mothers Out Front Arlington strongly urges the Arlington Redevelopment Board to accept the MBTA Communities Act plan as proposed by the Working Group.
WE HAVE WINNERS!
MIT Dept. of Urban Studies and Planning
Jay Maddox maddoxja@mit.edu; Shannon Hasenfratz shasenfr@mit.edu; Daniel Pratama danielcp@mit.edu
Title: EAST ARLINGTON COMPLETE NEIGHBORHOOD

Arlington High School CADD Program
Petru Sofio psofio2024@spyponders.com; Talia Askenazi taskenazi2025@spyponders.com
Title: ENVISION BROADWAY

Winslow Architects
John Winslow john@winslowarchitects.com; Phil Reville philip@winslowarchitects.com; Dolapo Beckley dolapo@winslowarchitects.com
Title: REDEFINING THE BROADWAY CORRIDOR: A 2040+ VISION

Contest Personnel
- Judges: Adria Arch, artist; Caroline Murray, construction project manager; Rachel Zsembery, architect
- Organizer: Barbara Thornton
- Host: Lenard Diggins, Chair, Arlington Select Board
- Sponsor: Civic Engagement Group, Envision Arlington, Town of Arlington MA
- Producer: ACMI
Special thanks
- ACMI production team: Katie Chang, James Milan, Jeff Munro, Jason Audette, Anim Osmani, Jared Sweet, Michael Armanious
- Civic Engagement Group (CEG): Greg Christiana, Len Diggins
- Jenny Raitt- Arlington DHCD Director, for laying the groundwork with the 2019 Broadway Corridor Study
- Jeffrey Levine, MIT DUSP faculty, led the original 2019 Broadway Corridor study team
- Kambiz Vatan & Cinzia Mangano, AHS CADD faculty and community volunteer
- Jane Howard, whose volunteer efforts over many years made possible Vision 2020 and Envision Arlington, leading to CEG and thus making this project possible by giving our town of Arlington the infrastructure, the “DNA”, to make this kind of civic engagement happen.
Background
The Civic Engagement Group (CEG), part of the Town of Arlington’s Envision Arlington network of organizations, is sponsoring the Broadway Corridor Design Competition. Architects, planners, designers and artists from around the region are encouraged to register by April 8, 2022.

This as an opportunity for designers and architects in the region to have some fun exercising real creativity to leapfrog into the post pandemic future and create a 2040+ VISION of what the built environment of a specific neighborhood (our Broadway Corridor area) might look like.
Although the cash prize is small, the pay off will be bragging rights, recognition and a possible opportunity to help shape the upcoming Arlington master plan revision process.
The information: flyer
The plan: Design Competition launch plan
The background data: 2019 Broadway Corridor Study
Register to enter: Sign up information

Broadway St. is a major bus route and transit corridor through Arlington to Cambridge. It is close enough to the Alewife MBTA Station to possibly be, at least partially, included in the planning for Arlington’s “transit area” status under the state Dept. of Housing and Community Development’s new guidelines.
(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
by Steve Revilak
On Tuesday August 6, 2024, Governor Healey signed the Affordable Homes Act (H.4977) into law. It’s a significant piece of legislation that will take positive strides toward addressing our state’s housing crisis. At 181 pages, the Affordable Homes Act is a lengthy bill, but the things it does generally fall into three categories: funding, changes to state law, and changes to state agencies.
The act authorizes more than five billion dollars to fund the creation, maintenance, and preservation of housing. This includes $425M to housing authorities and local housing initiatives (including $2.5M for the Arlington Housing Authority), $60M to assist homeowners or tenants with a household member with blindness or severe disabilities, $70M for community-based efforts to develop supportive housing for persons with disabilities, and $100M to expand opportunities for first-time homebuyers.
The Affordable Homes Act makes several changes to Massachusetts zoning laws, including the legalization of accessory dwelling units (ADUs) statewide. ADUs, also known as “granny flats” or “in-law apartments,” are a cost-effective way to add new housing, and they’re typically used to provide living quarters for relatives or caretakers, or to generate rental income for homeowners. ADUs are now allowed in all single-family zones in Massachusetts, by right, without the need for a discretionary permit. Arlington has been a leader in this area, having passed an ADU bylaw in 2021, and it’s great to see this option extended throughout the Commonwealth.
Finally, the Affordable Homes Act makes a number of changes to state agencies, especially the Executive Office of Housing and Livable Communities (EOHLC). The Act establishes a new Office of Fair Housing within the EOHLC, to “advance the elimination of housing discrimination.” The Fair Housing office will provide periodic reports on progress towards achieving this goal. EOHLC is also charged with creating and implementing a state-wide housing plan that will consider supply and demand, affordability, challenges unique to different regions of the state, and an analysis of local zoning laws.
While our legislators deserve kudos for putting this package together, they also deserve kudos for what they left out. More than three hundred amendments were filed during House deliberations, and a number of them were intended to weaken the multi-family housing requirements of the MBTA Communities Act. For example, one amendment, simply titled “Technical Correction” would have rewritten the transit community definitions, in order to reduce the housing requirements for Milton. We are heartened that our legislators did not go along with such shenanigans.