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Brookline 02446 Washington Square
66 Mason Terrace
Photo of 66 Mason Terrace
Sold on Jul 13, 2026

29

Map

Photo of 66 Mason Terrace
Photo of 66 Mason Terrace
$3,875,000
● House - Off Market

66 Mason Terrace

Brookline, MA 02446
bedrooms
5 Beds
bathrooms
4 Baths, 1 Half Bath
square feet
6,205 Ft²
$23,771
Est. Monthly

About This Property

Located on a quiet, residential street, this spacious contemporary residence offers 6,200 sq ft of living space with 5 bedrooms and 4.5 bathrooms. Thoughtfully designed, this home balances scale and functionality across expansive, light-filled interior spaces. Kitchen opens to adjoining family, dining spaces and patio. 1st floor bedroom with en-suite bathroom. 1st floor office/music room provides flexible work or recreation space. 2nd level spacious primary suite with fireplace, luxurious bathroom including stall shower and jacuzzi, walk-in closet and balcony. Three well-sized bedrooms provide versatility for family/work space. Finished lower level with garage access, mud room, extra storage space, large recreation room, fitness room, and full bath. 3-car garage, a rarity in this urban location, heated driveway, and the property's efficient footprint allows for a low-maintenance lifestyle without compromising interior volume. Located near all Coolidge Corner has to offer.  A rare find!
Unit Size
6,205 Ft²
Days on Market
-
Land Size
0.28 acres
Price per sqft
$644
Property Type
House
Property Taxes
$4,140
HOA Dues
-
Year Built
2000

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Cap Rate Calculator

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Cap Rate 100% Occupancy
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What does this mean?

Based on our analysis, the cap rate of this property is 1.25%. A negative cap rate indicates that the property might not be feasible as an income-producing asset. The median cap rate for a near zip code 11238 is 4.23%.

How much can I actually make?

Actual monthly rental income may vary between $4,760 and $7,140 depending on unit-specific characteristics. You can change the amount using the slider to further explore.

How is cap rate calculated?

Cap Rate = Net Operating Income (NOI) / Property Asset Value.

When calculating the cap rate, we assume 100% occupancy. Leverage (mortgage) is not considered.

Cap Rate provided by RealtyHop and RentHop, learn more about cap rate here.

Last updated: 3 months ago (MLSPIN #73484713)

Price History

Date / Event Date Event Price
Jul 13, 2026 Sold
Premium
Sold
Apr 13, 2026 In contract -
In contract
Apr 7, 2026 Price Decreased $3,998,000
↓ $502K (11.2%)
Price Decreased
Mar 10, 2026 Listed by Hammond Residential Real Estate $4,500,000
Listed by Hammond Residential Real Estate
Aug 27, 2007 Sold
Premium
Sold
Show More

Property Highlights

Parking Available
Garage
Air Conditioning
Fireplace

Building Info

Overview

    General

  • Year Built: 2000
  • Effective Year Built: 2011
  • Building Count: 1
  • Total Rooms: 10
  • Bedroom Count: 5
  • Bathroom Count: 5
  • Full Bathrooms: 4
  • Partial Bathrooms: 5
  • Building Condition: 1
  • Building Quality: 0
  • Construction Type: 6
  • Building Style: 5
  • Exterior Walls Type: 18
  • Interior Walls Type: 0
  • Roof Shape Type: 8
  • Roof Cover Type: 15
  • Floor Count: 200
  • Living Units: 1
  • Floor Cover: 0
  • Basement Type: 7
  • Basement Area: 2,410
  • Garage Type: 17
  • Parking Space Count: 3
  • Patio Type: 0
  • Porch Type: 0
  • Pool Type: 0

    Dimensions

  • Lot Size Square Feet: 12,031
  • Total Building Area: 4,590
  • Gross Building Area: 7,731
  • Building Area: 4,590
  • Building Area Measurement: L

    Heating and Cooling

  • Fireplace Count: 1
  • Air Conditioning: 13
  • Heating: 4
  • Heated Square Feet: 4,590
  • Heating Fuel Type: 3

    Utilities

  • Sewer System: 0
  • Water Service: 0

Building

  • Building Type: 0
  • Property Class: R
  • Subdivision: UNION SQUARE
  • Land Acres: 0000000276
  • Standard Land Use Code: 1001
  • County Land Use Code: 101

Neighborhood

  • School District Name: Brookline School District
  • School Tax School District: BROOKLINE SD
  • Census Tract: 400402

Zoning

  • Zoning: SC7

Geography

  • Account Number: 98026115
  • Parcel: BROO B:088 L:0007 S:0002
  • Block: 88
  • Lot: 7
  • Municipality: BROOKLINE
  • Latitude: 42.3413
  • Longitude: -71.1307

    Address

  • Full Address: 66 Mason Ter
  • Address - House Number: 66
  • Address - Street Name: Mason
  • Address - Suffix Type: Ter
  • State: MA
  • City Name: Brookline
  • Carrier Code: C053
  • 4-Digit Zip Code: 2601
  • Zip Code: 02446

Valuation

    Tax

  • Tax Year: 2024
  • Tax Amount: $4,506,900

    Appraisal Valuation

  • Standard Deviation: 0.1544
  • Valuation Date: Mar 13, 2024
  • Confidence Score: 81
  • Final Value: 4,880,886
  • High Value: 5,634,739
  • Low Value: 4,127,034

    Assessments Valuation

  • Assessed Year: 2024
  • Assessed Total Value: $4,613,000
  • Assessed Land Value: $1,480,100
  • Assessed Improvements Value: $3,132,900

    Sales

  • Current Sale Recording Date: Aug 27, 2007
  • Current Sale Price:
    Premium
  • Current Sale Document Type: 27
  • Current Sale Input Document Number: 122045
  • Previous Sale Recording Date: May 21, 1999
  • Previous Sale Amount: $75,000
  • Previous Sale Document Type: 27
Data used for valuation calculations is provided by RealtyHop, and other third party sources
Request mortgage information redaction

Comparables

Unit
Status
Type
Beds
Baths
ft²
Price/ft²
Asking Price
Listed On
Closing Price
Sold On
HOA + Taxes

About Washington Square

Stats & Trends

Median Asking:

$1,241,925

Sale Price/ft²

$819

Below Asking

0.02%

Average Days on Market

69

Average Home Size

2714 ft²

Average Home Age

85.1 years

Currently For Sale

41 Listings
Based on RH Advisors, Inc. calculations of home data from MLS and/or public records.

Similar Homes for Sale

Currently no similar homes around

Nearby Rentals

Unit for rent at 10 Magazine Street, Cambridge, MA, 02139

$4,485 /mo

  • 3 Beds
  • 2 Baths
  • 974 ft²
10 Magazine Street #The Porter, Cambridge, MA, 02139 Listing by Equity Residential
Unit for rent at 25 Euston St, Brookline, 02446

$4,400 /mo

  • 2 Beds
  • 1 Bath
25 Euston St, Brookline, 02446 Listing by Inbound Real Estate
Unit for rent at 75 Parkman St, Brookline, 02446

$3,300 /mo

  • 1 Bed
  • 1 Bath
75 Parkman St, Brookline, 02446 Listing by Inbound Real Estate

Rentals Near You

Click here to view more rentals in the neighborhood.
Last Updated: 3 months ago
Data Source: MLS PIN, MLS# 73484713

Frequently Asked Questions

When was property at 66 Mason Terrace built and last sold?
The property at 66 Mason Terrace was built in 2000 and last sold on Jan 1, 1970 for $2,375,000.
How much is this home worth?
The estimated value of the home located at 66 Mason Terrace is $3,974,502.
What are some comparable homes to 66 Mason Terrace?
There are currently no comparable homes to 66 Mason Terrace.
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