City of Boston Non-Conformity Analysis
Housing


Partners: The City of Boston, Boston Planning and Development Agency, Woodsong Associates

2023

Boston, Massachusetts

We recommended zoning changes to increase ADUs in Boston’s Mattapan Neighborhood.

Working with Woodsong Associates, our team combined research, design, urban planning, policy analysis, and knowledge of architectural constraints to identify potential changes to Boston’s zoning code that could encourage the development of ADUs and middle infill housing in the Mattapan neighborhood. 

Massing Schemes


To mitigate and address several identified barriers, we drew on a variety of case studies and best practices to put forth goals to: 1) enable zoning that accommodates middle housing types; 2) facilitate key standards for ADUs; and 3) address existing non-conformities present in the current Zoning Code.





Massing Schemes

Chosen ADU Typologies



We focused on four specific ADU typologies – External Detached, External Conversions, External Attached, and Internal Conversions.

We grounded our recommendations in Boston’s unique urban fabric, honored Mattapan’s neighborhood character, and challenged historically exclusionary zoning regulations. 


Housing Typologies




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