
30 Columbus Ave #4 Waltham — Photo 1 of 31
$749,900
30 Columbus Ave #4, Waltham, MA 02451
Waltham, MA 02451
Beds
2
Baths
2.5
SqFt
1,722
Style
Single Family
Built
1910
Welcome to 30 Columbus St, Waltham—an exceptional new condo conversion offering the perfect single-family alternative. This freestanding detached unit lives much like a single-family home, providing privacy, its own outdoor space, and no shared walls, while being part of a beautifully reimagined 4-unit condominium complex. Completely renovated from top to bottom, this home combines modern design with quality craftsmanship throughout. Offering 5 rooms, 2 bedrooms, and 2.5 baths across two levels, the main level features a stylish galley-style eat-in kitchen, first-floor laundry, and spacious living room. Upstairs offers a private primary suite with walk-in closet, second bedroom, full bath, and flexible office space. Additional features include a private patio, fenced yard, basement storage, and one deeded parking space. Ideally located near Moody Street, Brandeis University, and Routes 95 and 2. A rare opportunity for those seeking the feel and privacy of a single-family home with the convenience of condominium living. OPEN HOUSE SATURDAY AND SUNDAY 11:30 - 12:30.
Immersive Experience
Open Houses
Market Value Analysis
* Analysis is based on 24 actively listed and recently sold comparable properties strictly within Waltham, MA.
Property Details
Financials
Parking
Interior Specifications
Climate & Utilities
Building & Exterior
Property & Lot
Amenities & Appliances
Electric Water Heater • Range • Dishwasher • Disposal • Microwave • Refrigerator
Neighborhood
Public Transportation • Shopping • Walk/Jog Trails • Medical Facility
Geography
Floorplan Breakdown
Structural Layout
Living Room
Lvl FirstKitchen
Lvl FirstOffice
Lvl SecondMaster Bedroom
Lvl SecondBedroom 2
Lvl SecondProperty History
$749,900
Sep 10, 2026
MLS® 73574935
$739,000
Sep 10, 2026
MLS® 73574942
Population
17,393
U.S. Census Bureau, ACS 2024 5-Year Estimates (B01003)
Median Household Income
$122K
U.S. Census Bureau, ACS 2024 5-Year Estimates (B19013)
Renter-Occupied Homes
40.7%
U.S. Census Bureau, ACS 2024 5-Year Estimates (B25003)
New Construction Permits — Middlesex County
2,667 housing units permitted in the last 12 months (-2% vs the prior 12 months) — 1,709 in 5+ unit buildings
U.S. Census Bureau, Building Permits Survey (through Jun '26)
ADU Potential
Massachusetts allows one accessory dwelling unit by right in single-family zoning districts statewide (M.G.L. c. 40A §3; 760 CMR 71.00, effective Feb 2025). Estimated maximum ADU size for this property: 861 sq ft (the lesser of 900 sq ft or half the 1,722 sq ft principal dwelling). Lot size: 8,712 sq ft.
Based on listing data, which indicates the property type — not the zoning district. Local dimensional, septic (Title 5), and historic-district requirements still apply. Not legal advice — verify with the municipality.
Listing Agent: Richard Carlo
Listing Office: Conway - West Roxbury
MLS® Number: 73574935
Open Houses
Browse More Homes in Waltham
Explore other active listings in the area.
$1,499,000227-229 Newton StreetWaltham, MA9 bd4 ba3,464 sqft
$1,549,90015 Milner StreetWaltham, MA4 bd4 ba3,304 sqft
$1,995,000408-410 Crescent StWaltham, MA6 bd6 ba4,642 sqft
$1,475,00044 Raffaele DriveWaltham, MA4 bd3 ba2,816 sqft
$2,145,000196 Doty StWaltham, MA5 bd5 ba4,200 sqft
$1,139,000158 Warren StreetWaltham, MA4 bd3 ba2,057 sqft