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Single Family Residence at 21 Cottage Park Ave, Cambridge MA 02140, Cambridge
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$3,599,950

21 Cottage Park Ave, Cambridge MA 02140
Cambridge, MA 02140
Listed by John Raposo
Bedrooms
5
Bathrooms
4.5
Living area
4,087 sqft
Year built
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 shaker cabinetry, tile subway backsplash, quartz counters, Thermador stainless appliances, classic hood, and oversized island over herringbone oak floors. Half bath and full pantry with water dispensers rounds out the 1st floor. 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, a 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.

Highlights

Fireplace

Property details

MLS #
73584464
Property type
Single Family Residence
Subdivision
N/A
Status
Active
Days on market
1
On market date
September 30, 2026
Stories
N/A
Total bathrooms
4.5
Garage spaces
1
Parking spaces
4
Lot size
0.1 acres

Location

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Nearby schools

Within 10 miles. School directory data from the National Center for Education Statistics (NCES), accessed via the Urban Institute Education Data API. Local Score is calculated by INNOVATE Real Estate; where a state rating is shown, it comes from that state's own official school report card (e.g. NC Dept. of Public Instruction, SC Report Card).

ElementaryCharter
Benjamin Banneker Charter Public School
0.47 mi away · Grades -1-6
Nearest school -- attendance-zone data not available here
3.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
329
Student:teacher ratio
15.7:1
District
Benjamin Banneker Charter Public (District)
Middle
Rindge Avenue Upper School
0.54 mi away · Grades 6-8
Nearest school -- attendance-zone data not available here
5.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
262
Student:teacher ratio
8.2:1
District
Cambridge
High
Curtis-Tufts
1.37 mi away · Grades 10-12
Nearest school -- attendance-zone data not available here
5.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
12
Student:teacher ratio
4.0:1
District
Medford

Walkability

Blended score for Cambridge's center, calculated by INNOVATE Real Estate from two sources: the EPA's National Walkability Index (street network, transit, land-use mix) and Google Places amenity data (what's actually reachable on foot from this point). 60% EPA National Walkability Index + 40% nearby-amenity density (Google Places).

90
Highly walkable
out of 100
EPA National Walkability Index
16.5 / 20 -- Most walkable
Google Places amenity density
100 / 100
Restaurants & cafes20
Grocery stores20
Parks20
Schools20
Transit stops20
Pharmacies9

Market position

How this listing compares to current activity in Cambridge, from live MLS data.

On the market 1 days -- 87 fewer days than Cambridge's current average of 88 days.
For reference, the median list price across 986 active listings in Cambridge right now is $7,225.

Mortgage calculator

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Est. monthly payment
$21,829/mo
$719,990 down
$2,879,960 loan
Principal & interest$18,679
Property tax (est.)$3,000
Home insurance (est.)$150

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Data source: Listing information provided by MLS Property Information Network via Trestle/CoreLogic. Last updated 1 days ago.

Information herein deemed reliable but not guaranteed; all measurements, school assignments, HOA fees, taxes, and feature lists are approximate and should be independently verified. Equal Housing Opportunity.