24 Union St, Cambridge MA 02141

Cambridge, MA 02141
$6,950,000
Est. $36,754/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.

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12
Beds
12.5
Baths
4,355
Sq Ft
$1,596
Price/Sq Ft
0.15
Acres
1886
Year Built
9
Days on Market
For Sale Listed Sep 7, 2026 • MLS# 73572529 Copied! • Updated Sep 16, 2026

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About this home

East Cambridge 3-family on a scarce rectangular 6,333 sf lot with one street frontage on quiet one-way Union St and three sides at neighboring lots. Current C-1 dimensional table uses about a 10 ft front setback on the street side and about a 5 ft side setback, so a single-frontage lot can use more of the parcel than a lot with two street setbacks; buyer must verify all setbacks with the City. One deed: 24 / 24A / 24B. Short walk to MIT and Kendall Square biotech (Moderna, Pfizer). Assessor: 18 rooms, 9 beds, 3.5 baths; living 4,355 sf (first floor 2,526 + finished upper 1,829); unfinished basement 2,526 sf; wood deck 363 sf; gross 7,244 sf. Renovated under permit BLDC-16364-2022; Luna plans attached. Current layout: 4 beds and 4 full baths per unit (12 / 12). Occupied income property; NFPA-13D sprinklers in each unit. Buyer must verify with Cambridge CDD and ISD current C-1 rules, including 4-story base height or up to 6 stories / 74 ft with inclusionary housing on lots of 5,000 sf or more, Lodging House use, basement treatment, occupancy, licensing, and parking. No off-street parking; city street permit only, not guaranteed. Sold as-is. Seller will not repair or cut price for inspection. Seller will consider closing-cost concessions up to $120,000.

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Recently Sold Nearby

Property History

Market Insights

1
Price Changes
71.2%
Price Range
1
Previous Sales

Property Timeline

Price Increased
Sep 8, 2026
$6,950,000 +$250,000 (+3.73%)
From $6,700,000 to $6,950,000 (+3.7%)
🏠
Listed for Sale
Sep 7, 2026
$6,700,000
Original listing
Agent: Darin Thompson Office: Stuart St James, Inc.
Previous Transaction - MLS #72081857
Full transaction history available when tracking began
🏷️
Previously Sold
Nov 30, 2016
$2,000,000
MLS #72081857

Tax History

Year Taxes Assessment
2026 $16,932 $2,538,600

Financial Details

Annual Property Tax
$16,932
Tax Year 2026
Assessed Value
$2,538,600

Facts & Features

Home Facts

Type Residential Income
Style 3 Family
Year Built 1886
Living Area 4,355 sq ft
Lot Size 0.15 acres
Stories 9
Bedrooms 12
Full Baths 12
Half Baths 1
Total Rooms 15

Investment Metrics

Units 3
Unit 1 Rent $7,800/mo · Y
Unit 2 Rent $7,000/mo · Y
Unit 3 Rent $7,000/mo · Y
Total Monthly Rent $21,800/mo
Gross Income $261,600
Net Operating Income $261,600
Cap Rate 3.76%
Heating Hot Water, Natural Gas
Cooling Window Unit(s)
Flooring None
Appliances None
Fireplace None
Fireplaces 2
Basement Full
Laundry None
Features None
Construction None
Architecture None
Roof None
Features None
Pool None
Spa None
Fencing Fenced/enclosed
Patio/Porch Deck, Deck - Wood, Deck - Vinyl
Features On Street
Electric 220 Volts
Water Public
Sewer Public Sewer
Gas None
Other None

Financial

Annual Tax $16,932
Assessed Value $2,538,600
Fee Includes None
Amenities None
Optional Fee Includes None
Lead Paint Yes
Seller Disclosures Pre-1978: Lead Paint Disclosure Required. Property Occupied. If Sold, Seller Will Withdraw Any Pending Lodging-house Application. Buyer To Verify Zoning, Licensing, Occupancy, Sprinklers, And Assessor Vs. Actual Layout. Sold As-is.
Exclusions Tenants Personal Property. Seller Personal Items.
Possession None
Accepted Financing None
Structure Type []
Sq Ft Source Public Record
Documents None
County Middlesex
Total market time (incl. prior listings) 9 days

Property Overview

Property Type
3 Family
Listing Type
For Sale
Year Built
1886
Bedrooms
12
Full Bathrooms
12
Half Bathrooms
1
Living Area
4,355 sq ft
Total Rooms
15
Stories
9
Levels
9

Floor Layout

Interior Features

Flooring:
Appliances:
Interior Features:
Windows: Insulated Windows
Basement: Full
Laundry:
Security:

Construction & Materials

Year Built: 1886
Structure Type:
Exterior Materials:
Roof:
Foundation: Concrete Perimeter, Stone, Brick/Mortar
Stories: 9

Heating, Cooling & Utilities

Heating: Hot Water, Natural Gas
Cooling: Window Unit(s)
Hot Water: Electric
Water Source: Public
Sewer: Public Sewer
Energy Features:

Exterior & Lot

Exterior Features:
Patio & Porch: Deck, Deck - Wood, Deck - Vinyl
Fencing: Fenced/Enclosed
Other Structures:
Lot Features: Cleared, Level
Road Surface:

Parking & Garage

Parking Features: On Street

Special Features

Fireplaces: 2
Fireplace Type:
Community Amenities: Public Transportation, Shopping, Park

Nearby Schools

School information not available for this location.

Monthly Payment Calculator

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Including down payment
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Down: $0
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Monthly Payment Breakdown

Principal & Interest $0
Property Tax $1,411
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

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Current Rate
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Payment Over Time

Interest
Principal
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

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Neighborhood

24 Union St, Cambridge MA 02141

Cambridge, MA 02141

Listing Information

Listing Agent Darin Thompson
Listing Office Stuart St James, Inc.
Office Phone 617-819-5850
Agent MLS ID BB810237
Office MLS ID AC1022
Listing Data Updated Sep 16, 2026 8:07 PM 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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