Greylock Federal joins MassHousing's accessory dwelling unit loan program
Money Moves Boston, MA localThe Pittsfield credit union is the ninth lender in the state's program financing backyard cottages and basement apartments
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Overview
Updated 1 hour agoMassachusetts needs at least 222,000 new homes over the next decade. Accessory dwelling units (backyard cottages, converted basements, over-garage apartments) are one way to add them without new land or large-scale construction.
Greylock Federal Credit Union, based in Pittsfield, has joined MassHousing's Accessory Dwelling Unit Loan Program. The credit union says it's the first Berkshire County lender in the program, which pairs interest-bearing loans with zero-interest deferred financing for income-eligible homeowners.
Why it matters
If ADU lending scales, Massachusetts homeowners gain a new way to add housing and rental income without new land or large developments.
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People Involved
Organizations Involved
MassHousing is Massachusetts' affordable housing finance agency, created in 1966 to provide capital for affordable rental housing and homeownership.
Greylock Federal Credit Union is a member-owned credit union based in Pittsfield, Massachusetts, serving Berkshire County and nearby New York communities.
The Executive Office of Housing and Livable Communities is Massachusetts' housing policy agency, overseeing housing production and community development.
Timeline
August 2024 September 2026
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Greylock joins MassHousing ADU program
Latest PartnershipGreylock Federal becomes the ninth lender and first Berkshire County institution in MassHousing's Accessory Dwelling Unit Loan Program.
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Greylock launches its own ADU loan product
Product LaunchGreylock Federal Credit Union introduces an ADU loan program for Berkshire County homeowners, ahead of joining the MassHousing network.
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MassHousing launches ADU loan program
Program LaunchMassHousing starts its Accessory Dwelling Unit Loan Program, offering income-eligible homeowners financing for attached and detached units. Exact launch date in 2025 not specified.
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Massachusetts legalizes ADUs by right
Rule ChangeGovernor Maura Healey signs the Affordable Homes Act, allowing accessory dwelling units by right in single-family residential zones.
Historical Context
2 moments from history that rhyme with this story — and how they unfolded.
Portland's ADU fee waiver (2010-2016)
Portland waived system development charges for ADUs starting in 2010, cutting the cost of adding a unit by thousands of dollars. Annual ADU permits rose from about 100 to more than 800 by 2016.
Portland became an early US leader in ADU construction, adding thousands of units.
The city reinstated some fees as the program matured, showing how financial incentives can be adjusted.
Portland shows how removing cost barriers changes construction volumes. Massachusetts is using a different lever: cheaper capital through state-backed loans.
California's ADU boom (2017-2022)
California passed laws in 2017 and 2019 making accessory dwelling units legal by right in most residential zones, overriding local restrictions. ADU permits grew from roughly 1,200 in 2016 to more than 20,000 in 2022.
ADUs became a major source of new housing in California, especially in coastal cities where land is scarce.
California's by-right model became the template for other states, including Massachusetts.
Massachusetts copied California's by-right approach in 2024. California's trajectory shows the potential scale, but also that financing and construction costs are the next hurdle after zoning.
