

Approved plans re-imagine this property as a sophisticated three-level single-family home that seamlessly blends historic character with modern livability. The 3,080-square-foot design transforms the existing carriage house into an open, light-filled residence featuring connected living and dining spaces, a modern kitchen with direct access to a private garden and bluestone terrace, and a functional mudroom entry. Upstairs, four well-proportioned bedrooms and 2.5 baths offer flexibility and comfort, while the finished lower level provides valuable space for a fifth bedroom, office, or gym and bathroom. The approved site plan includes two off-street parking spaces, privacy fencing, and professionally designed plantings with a curated mix of native and ornamental species. Preservation and planning approvals are in place, allowing a developer, builder, or end user to move directly into construction on a distinctive, design-forward home in one of Brookline's most desirable neighborhoods.
Property Details for 12 Thayer St
Total Rooms: 0
Bedrooms: 0
Bathrooms: 0Full 0Half
Living Area: 0
Lot Size (Acres/SF): 0.09/ 3890
Lot Features:
Levels:
Total Parking Spaces: 0
Garage Spaces: 0
Parking Features:
Listing ID: 73460273
Postal Code: 02445
Neighborhood: Brookline Village
Elementary School District: John Pierce
Elementary School Buffer Zone:
High School: Brookline High School
Year Built: 9999
Architectural Style:
Basement: Full, Dirt Floor, Unfinished
Features for 12 Thayer St
Heating: Other
Heating Zones:
Fireplaces: 0
Accessibility Features:
Association: False
Association Fee:
Fee Frequency:
Association Fee Includes:
Association Amenities:
Management Type:
Optional Fee:
Optional Fee Includes:
Elevator: False
Cooling: Other
Cooling Zones:
Private Pool: False
Pool Features:
Waterfront: False
Waterfront Features:
Pets Allowed:
Entry Level (Floor):
Entry Location:
Complex Complete: False
Total Units in Building:
Owner Occupied Units:
Utilities & Financials for 12 Thayer St
Electric:
Water Source: Public
Sewer: Public Sewer
Utility Connections:
Annual Tax: 1466
Assessed Value: 148500
Tax Year: 2025
Disclosures for 12 Thayer St
Disclosures: Also listed as land MLS # 73460275
Exclusions:
Property Attached: False
Historic District:
Zoning Code: T-5
Zoning Description: TWO-FAMILY & ATTACHED SINGLE-FAMILY
Zoning Category: two_family
Zoning FAR:
Zoning Min Lot: 5000
Lead Paint: Unknown
SqFt Includes Basement: False
Square Feet Disclosures:
Voting Precinct: 6 Located at BHS Schluntz Gymnasium, 115 Greenough Street
Listing Lifecycle for 12 Thayer St
List Date: 2025-12-05
Off Market Date: 2026-01-12
Under Agreement Date: 2025-12-30
Sold Date:
List Office: Compass
Listing Agent: Masterman Elek Group
Original List Price: $995,000
Sold Price: ()
Square Feet Disclosures:
Last Updated on: 2026-02-07 13:51:00 from: mls-pin
Buyer’s Office:
Buyer’s Agent:



