Lexington Housing Updates

Nearly 2,000 MBTA and SRD multifamily units are being added since 2023 

2,000+ more are allowed by current zoning, totaling 4,000+ 

~38% increase in total housing units

Updated as of 12/31/2025

Data source & assumptions behind the charts on this page: 

https://dls-gw.dor.state.ma.us/reports/rdPage.aspx?rdReport=AverageSingleTaxBill.SingleFamTaxBill_wRange

https://www.mass.gov/info-details/multi-family-zoning-requirement-for-mbta-communities

https://www.point2homes.com/US/Neighborhood/MA/Lexington-Demographics.html

FY 2025 Assessor's reported list of properties: https://www.lexingtonma.gov/DocumentCenter/View/12912/-FY2025-STREET-LISTING?bidId=

https://lexingtonma.gov/DocumentCenter/View/14088/Article-2-Presentation-Slides-03-14-2025?bidId= 

2025 Lexington Housing Needs Assessment (pages 6 and 8 on details of subsidized housing units) : https://www.lexingtonma.gov/DocumentCenter/View/14788/Lexington-Housing-Needs-Assessment-Revised-81825?bidId=

Affordable housing inventory: https://www.rhsohousing.org/node/81/housing-inventory

Assumptions:

• 14% of total units in MBTA overlay and SRD developments will be affordable housing (based on the actual 15% from pipeline projects and 15% required in zoning, reduced 1% to be conservative and account for the fact that projects with fewer than 10 units are not required to include affordable units.

• Applied a factor of 66% over the MBTA unit capacity to the 60 acres of zoning freeze based on actual data of the 1,076 units in the pipeline.

• Applied a factor of 50% over the MBTA unit capacity to the remaining 90 acre MBTA zoning after Article 2 (excluding the 7 acres already counted in zoning freeze).

• Non-Single-Family units include multifamily units, condos that share a wall, and Accessory Dwelling Units (ADUs).