LevelThird
21 Cottage Park Ave, Cambridge MA 02140
Cambridge, MA 02140 • North Cambridge
$3,599,950
Est. $18,935/month
Estimate assumptions
20% down, a 30-year loan at 6.5%, and $200/month estimated insurance.
Includes the supplied property-tax and HOA inputs; missing inputs contribute $0. HOA fees with an unspecified frequency are treated as monthly. PMI and closing costs are excluded.
Adjust the payment calculatorTrack this home for price, status, and open-house alerts.
Open House Schedule
04
Oct
Sunday, October 4
10:00 AM - 11:30 AM EDT
03
Oct
Saturday, October 3
1:00 PM - 3:00 PM EDT
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.
View in the App
Save this property, schedule tours instantly, and get alerts when the price drops
Scan with phone
Public Records & Permits
Log in to view assessor & tax records, ownership history, and recent building permits for this property.
BMN Estimate
Get the number an algorithm can't give you
A free agent CMA factors in condition, upgrades, and the street — the things comps alone can't see.
Recently Sold Nearby
Property History
Market Insights
69.4%
Price Range
1
Previous Sales
Property Timeline
Listed for Sale
Sep 30, 2026
$3,599,950
Original listing
Agent: John Raposo
Office: eXp Realty LLC
Previous Transaction - MLS #73163697
Full transaction history available when tracking began
Previously Sold
Dec 29, 2023
$1,100,000
MLS #73163697
| Date | Event | Price | Change | $/sqft | Details |
|---|---|---|---|---|---|
| 09/30/2026 | 🏠 Listed for Sale | $3,599,950 | - | - | Original listing |
| 12/29/2023 | 🏷️ Previously Sold | $1,100,000 | - | - | MLS #73163697 |
Tax History
| Year | Taxes | Assessment |
|---|---|---|
| 2025 | $6,377 | $1,165,300 |
Financial Details
Annual Property Tax
$6,377
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
Air Source Heat Pumps (ashp)
Cooling
Central Air, Air Source Heat Pumps (ashp)
Flooring
Tile, Engineered Hardwood
Appliances
Electric Water Heater, Water Heater, Range, Dishwasher, Disposal, Microwave, Refrigerator, Washer, Dryer
Fireplace
None
Fireplaces
1
Basement
Full, Finished
Laundry
Electric Dryer Hookup
Features
Wet Bar
Exterior
Construction
Frame
Architecture
Colonial
Roof
Shingle, Rubber, Metal
Features
Porch, Deck, Deck - Composite, Professional Landscaping, Sprinkler System
Pool
None
Spa
None
Fencing
Fenced/enclosed
Patio/Porch
Porch, Deck, Deck - Composite
Parking
Garage Spaces
1
Has Garage
Yes
Features
Detached, Paved Drive, Off Street
Total Spaces
4
Utilities
Electric
None
Water
Public
Sewer
Public Sewer
Gas
None
Other
For Electric Range, For Electric Dryer
Financial
Annual Tax
$6,377
Assessed Value
$1,165,300
HOA & Community
Fee Includes
None
Amenities
None
Optional Fee Includes
None
MA Disclosures
Lead Paint
Unknown
Seller Disclosures
La Has Owner Ship Interest
Additional Details
Possession
None
Accepted Financing
None
Structure Type
[]
Sq Ft Source
Other
Sq Ft Disclosures
Living area is approximate
Documents
None
County
Middlesex
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
Floor Layout
Interactive room guide
Floor Layout
Finished Area
4,087 sq ft above grade
1,000 sq ft below grade
LevelThird
LevelSecond
LevelSecond
LevelFirst
LevelFirst
LevelFirst
LevelBasement
Display Options
Outdoor Areas
Patio & porchPorch, Deck, Deck - Composite
Room Markers
OOffice (1)
KKitchen (1)
BRBedroom (5)
BABathroom (4)
DDining (1)
LLiving (2)
Conceptual diagram based on MLS room data. It is not to scale and is not a substitute for architectural plans or on-site measurements.
Interior Features
Flooring:
Tile, Engineered Hardwood
Appliances:
Electric Water Heater, Water Heater, Range, Dishwasher, Disposal, Microwave, Refrigerator, Washer, Dryer
Interior Features:
Wet Bar
Windows:
Insulated Windows
Basement:
Full, Finished
Laundry:
Electric Dryer Hookup
Security:
Construction & Materials
Style:
Colonial
Year Built:
2026
Structure Type:
Exterior Materials:
Frame
Roof:
Shingle, Rubber, Metal
Foundation:
Concrete Perimeter
Heating, Cooling & Utilities
Heating:
Air Source Heat Pumps (ASHP)
Heating Zones:
4
Cooling:
Central Air, 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
Patio & Porch:
Porch, Deck, Deck - Composite
Fencing:
Fenced/Enclosed
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:
Nearby Schools
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
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
|
#105 of 825
|
Score: 59.1
Dropped 84 spots from last year
+0.9 above state avg
344 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
|
#245 of 346
|
Score: 47.4
Improved 37 spots from last year
-10.8 below state avg
888 students
Diverse
Rising School
College Ready Curriculum
Diverse Student Body
Grades PK-12
A
Amigos School
2.8 mi
|
#46 of 352
|
Score: 57.6
Improved 13 spots from last year
-0.6 below state avg
421 students
Diverse
Diverse Student Body
Strong Attendance
Grades PK-08
International School of Boston
0.2 mi
Grades PK-K
Middle Schools
5 schools
Allium Montessori School
1.6 mi
Grades 01-06
A
Rindge Avenue Upper School
0.5 mi
|
#66 of 352
|
Score: 54.0
Dropped 1 spots from last year
-4.2 below state avg
278 students
Diverse
Diverse Student Body
Strong Attendance
Grades 06-08
A-
Putnam Avenue Upper School
2.4 mi
|
#104 of 352
|
Score: 49.2
Dropped 25 spots from last year
-9 below state avg
286 students
Very Diverse
Diverse Student Body
Grades 06-08
B-
Cambridge Street Upper School
2.8 mi
|
#207 of 352
|
Score: 39.9
Dropped 19 spots from last year
-18.3 below state avg
317 students
Very Diverse
Diverse Student Body
Grades 06-08
B+
Darby Vassall Upper School
3.1 mi
|
#119 of 352
|
Score: 47.6
Improved 25 spots from last year
-10.6 below state avg
296 students
Very Diverse
Rising School
Diverse Student Body
Grades 06-08
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
|
#205 of 346
|
Score: 51.9
Dropped 84 spots from last year
-6.3 below state avg
244 students
Diverse
7 sports
• 202 athletes
High Graduation Rate
College Ready Curriculum
Grades 06-12
Learn about these ratings
Monthly Payment Calculator
Monthly Payment
$0
Principal, interest, taxes & insurance
Loan Amount
$0
After down payment
Total Interest
$0
Over life of loan
Total Cost
$0
Including down payment
%
Down: $0
%
Monthly Payment Breakdown
Principal & Interest
$0
Property Tax
$531
Homeowners Insurance
$200
PMI (if <20% down)
$0
Loan Summary
Total of 360 payments
$0
Total principal paid
$0
Total interest paid
$0
Rate Impact
-0.5% Rate
$0/mo
Save $0/mo
Current Rate
$0/mo
+0.5% Rate
$0/mo
Cost $0/mo
Payment Over Time
Year 1
95% Interest
Year 15
50/50
Year 30
95% Principal
* Estimates only. Actual payments may vary. Consult with a lender for accurate figures.
Location
Loading map...
Neighborhood
North Cambridge
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
Sep 30, 2026 12:18 PM EDT
Listing information is deemed reliable but not guaranteed. Data provided by MLS Property Information Network, Inc. All information should be independently verified.
Contact Us
Ask about this property — free, no obligation.
Similar Homes for Sale
Comparable Properties
Customize Comparable Search
Finding comparable properties...
Loading market insights for Cambridge.