30 Columbus Ave #4 Waltham — Photo 1 of 31
Recent Drop: $10,900
$739,000
Investment Analysis — 30 Columbus Ave #4
Waltham, MA 02451
Based on HUD Small Area Fair Market Rent for Boston-Cambridge-Quincy, MA-NH HUD Metro FMR Area, a 2-bedroom in 02451 carries an estimated $3,520/mo in gross rent — about a 4.33% cap rate and $32,003/yr in estimated NOI at the $739,000 list price. Adjust every assumption in the calculator below.
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.
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.
Estimates — not financial advice
These figures are illustrative estimates for informational purposes only — not an appraisal, valuation, or guarantee of rent, income, or returns, and not financial, tax, or investment advice. Rent is either the figure reported on the MLS listing — in-place rent that may differ from market and is not verified against the actual leases — or, where the listing reports none, an estimate from HUD Small Area Fair Market Rents, a government benchmark that may differ from actual market rent. Each figure is labelled with its source. Cap rate, NOI, and returns depend on the assumptions shown, which you can change. MLS and other third-party data may be inaccurate or out of date. Verify all figures independently and consult your own financial, tax, and legal advisors before making any investment decision.
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Electric Water Heater • Range • Dishwasher • Disposal • Microwave • Refrigerator
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Lvl FirstKitchen
Lvl FirstOffice
Lvl SecondMaster Bedroom
Lvl SecondBedroom 2
Lvl SecondProperty History
$739,000
Was $749,900
Sep 11, 2026
MLS® 73574935
$749,900
Sep 10, 2026
MLS® 73574935
$739,000
Sep 10, 2026
MLS® 73574942
Listing Agent: Richard Carlo
Listing Office: Conway - West Roxbury
MLS® Number: 73574935
