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21 Cottage Park Ave, Cambridge MA 02140

Cambridge, MA 02140
$3,628,900
Est. $19,166/month
5
Beds
4.5
Baths
4,087
Sq Ft
$888
Price/Sq Ft
0.10
Acres
2026
Year Built
1
Garage Space
41
Days on Market
Active Listed Jun 2, 2026 • MLS# 73528101 Copied! • Updated Jun 6, 2026

About this home

Striking new luxury single family on a quiet, tree-lined North Cambridge street, blending classic New England architecture with modern finishes and smart home readiness. Over 4,000 sf across four finished levels: 5 beds, 4.5 baths. The open first floor showcases a chef's kitchen with white oak and shaker cabinetry, marble subway backsplash, quartz counters, Thermador stainless appliances, statement hood, and oversized island over herringbone oak floors. Half bath and full pantry included. The second floor features a primary suite with spa bath, soaking tub and walk-in shower, plus a second en-suite bedroom and laundry room. Third floor offers two more bedrooms, full bath, and eave storage. Finished lower level features: entertainment room, private study, bedroom and secondary laundry. Private fenced yard plus detached 1-car garage. Walk to Davis, Porter, Alewife T, Minuteman Bikeway, top schools, parks, and Cambridge/Somerville dining. Under construction with completion in August.

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Recently Sold Nearby

Property History

Market Insights

69.7%
Price Range
1
Previous Sales

Property Timeline

🏠
Listed for Sale
Jun 2, 2026
$3,628,900
Original listing
Agent: John Raposo Office: eXp Realty
Previous Transaction - MLS #73163697
Full transaction history available when tracking began
🏷️
Previously Sold
Dec 29, 2023
$1,100,000
MLS #73163697

Tax History

Year Taxes Assessment
2025 $7,400 $1,165,300

Financial Details

Annual Property Tax
$7,400
Tax Year 2025
Assessed Value
$1,165,300

Facts & Features

1 Car Garage
Central AC
New Construction

Home Facts

Type Residential
Style Single Family Residence
Year Built 2026
Living Area 4,087 sq ft
Lot Size 0.10 acres
Bedrooms 5
Full Baths 4
Half Baths 1
Total Rooms 10

Interior

Heating Central, Energy Star Qualified Equipment, Air Source Heat Pumps (ashp)
Cooling Central Air, Energy Star Qualified Equipment, Air Source Heat Pumps (ashp)
Flooring Wood, Tile
Appliances Electric Water Heater, Water Heater, Microwave, Energy Star Qualified Refrigerator, Energy Star Qualified Dryer, Energy Star Qualified Dishwasher, Energy Star Qualified Washer, Range Hood, Range
Fireplace None
Fireplaces 1
Basement Full, Finished
Laundry Second Floor
Features Bathroom

Exterior

Construction Frame
Architecture Colonial
Roof Shingle, Metal
Features Porch, Deck, Deck - Composite, Professional Landscaping, Sprinkler System, Fenced Yard, Et Irrigation Controller
Pool None
Spa None
Fencing Fenced
Patio/Porch Porch, Deck, Deck - Composite
Garage Spaces 1
Has Garage Yes
Features Detached, Paved Drive, Off Street
Total Spaces 4
Electric None
Water Public
Sewer Public Sewer
Gas None
Other None
Annual Tax $7,400
Assessed Value $1,165,300
Fee Includes None
Amenities None
Optional Fee Includes None
Seller Disclosures Buyers And Buyer Agents Perform Due Diligence. La Has Ownership Interest.
Possession None
Accepted Financing None
Structure Type []
Sq Ft Source Other
Sq Ft Disclosures Living area is approximate
Documents None
County Middlesex
Total market time (incl. prior listings) 4 days

Property Overview

Property Type
Single Family Residence
Listing Type
For Sale
Year Built
2026
Bedrooms
5
Full Bathrooms
4
Half Bathrooms
1
Living Area
4,087 sq ft
Total Rooms
10

Room Details

First Floor

Bathroom1
Dining Room
Kitchen
Living Room

Second Floor

Bathroom2
Bedroom2
Bathroom3
Master Bedroom

Third Floor

Bedroom4
Bedroom3

Basement Floor

Bedroom5
Family Room

Other Floor

Office
Master Bathroom
Yes

Interior Features

Flooring: Wood, Tile
Appliances: Electric Water Heater, Water Heater, Microwave, ENERGY STAR Qualified Refrigerator, ENERGY STAR Qualified Dryer, ENERGY STAR Qualified Dishwasher, ENERGY STAR Qualified Washer, Range Hood, Range
Interior Features: Bathroom
Windows: Insulated Windows
Basement: Full, Finished
Laundry: Second Floor
Security:

Construction & Materials

Style: Colonial
Year Built: 2026
Structure Type:
Exterior Materials: Frame
Roof: Shingle, Metal
Foundation: Concrete Perimeter

Heating, Cooling & Utilities

Heating: Central, ENERGY STAR Qualified Equipment, Air Source Heat Pumps (ASHP)
Heating Zones: 4
Cooling: Central Air, ENERGY STAR Qualified Equipment, Air Source Heat Pumps (ASHP)
Cooling Zones: 4
Hot Water:
Water Source: Public
Sewer: Public Sewer
Energy Features:

Exterior & Lot

Exterior Features: Porch, Deck, Deck - Composite, Professional Landscaping, Sprinkler System, Fenced Yard, ET Irrigation Controller
Patio & Porch: Porch, Deck, Deck - Composite
Fencing: Fenced
Other Structures:
Lot Features:
Road Surface:

Parking & Garage

Garage Spaces: 1
Total Parking Spaces: 4
Parking Features: Detached, Paved Drive, Off Street

Special Features

Fireplaces: 1
Fireplace Type:
Community Amenities:
School District
Cambridge School District local
A-
🎓 Where Graduates Go Class of 2021
65% attend college
58% 4-Year 7% 2-Year 23% Out of State 7% Working
School Safety 2024-25
1.2% Low
0.8% Suspensions 0.2% In-School 0.4% Emergency
4.3% below state avg
E

Elementary Schools

10 schools
Lycee International de Boston/International School of Boston, Inc.
0.2 mi
Grades 01-12
A
Benjamin Banneker Charter Public School
0.5 mi | #100 of 824 | Score: 59.4
Dropped 79 spots from last year
+1.2 above state avg
352 students Less Diverse
Grades PK-06
Cambridge Friends School
0.8 mi
Grades PK-08
Cambridge Montessori School
0.9 mi
Grades PK-06
Fayerweather Street School
1.2 mi
Grades PK-08
St. Peter Elementary School
1.3 mi
Grades PK-08
Shady Hill School
2.0 mi
Grades PK-08
C
Prospect Hill Academy Charter School
2.7 mi | #253 of 346 | Score: 45.9
Improved 29 spots from last year
-12.3 below state avg
890 students Diverse
High Graduation Rate Rising School College Ready Curriculum Diverse Student Body
Grades PK-12
A
Amigos School
2.8 mi | #45 of 352 | Score: 57.8
Improved 14 spots from last year
-0.5 below state avg
413 students Diverse
Diverse Student Body
Grades PK-08
International School of Boston
0.2 mi
Grades PK-K
M

Middle Schools

5 schools
Allium Montessori School
1.6 mi
Grades 01-06
A
Rindge Avenue Upper School
0.5 mi | #67 of 352 | Score: 54.3
Dropped 2 spots from last year
-3.9 below state avg
292 students Diverse
Diverse Student Body
Grades 06-08
A-
Putnam Avenue Upper School
2.4 mi | #103 of 352 | Score: 49.1
Dropped 24 spots from last year
-9.1 below state avg
283 students Very Diverse
Diverse Student Body
Grades 06-08
C+
Cambridge Street Upper School
2.8 mi | #214 of 352 | Score: 39.8
Dropped 26 spots from last year
-18.4 below state avg
301 students Very Diverse
Diverse Student Body
Grades 06-08
B+
Darby Vassall Upper School
3.1 mi | #118 of 352 | Score: 47.5
Improved 26 spots from last year
-10.7 below state avg
298 students Very Diverse
Rising School Diverse Student Body
Grades 06-08
H

High Schools

3 schools
Farr Academy School
2.9 mi
Grades 07-12
NuVu Innovation School
2.9 mi
Grades 08-12
B-
Community Charter School of Cambridge
3.3 mi | #178 of 346 | Score: 53.1
Dropped 57 spots from last year
-5.2 below state avg
251 students Diverse
7 sports • 202 athletes
High Graduation Rate College Ready Curriculum
Grades 06-12
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Monthly Payment Breakdown

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Property Tax $617
Homeowners Insurance $200
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Year 1
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Year 15
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Year 30
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Neighborhood

21 Cottage Park Ave, Cambridge MA 02140

Cambridge, MA 02140

Listing Information

Listing Agent John Raposo
Listing Office eXp Realty LLC
Office Phone 888-854-7493
Agent MLS ID BB803965
Office MLS ID AN8920
Listing Data Updated Jun 6, 2026 3:05 AM EDT
Listing information is deemed reliable but not guaranteed. Data provided by MLS Property Information Network, Inc. All information should be independently verified.

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Steven Novak
BMN Boston Real Estate
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