4 Concord Street Boston — Photo 1 of 36
$2,899,000
Investment Analysis — 4 Concord Street
Boston, MA 02129 — Charlestown
Based on HUD Small Area Fair Market Rent for Boston-Cambridge-Quincy, MA-NH HUD Metro FMR Area, a 5-bedroom in 02129 carries an estimated $5,320/mo in gross rent — about a 0.60% cap rate and $17,530/yr in estimated NOI at the $2,899,000 list price. Adjust every assumption in the calculator below.
Beds
5
Baths
3.5
SqFt
3,015
Style
Single Family
Built
1870
Situated across from Monument Square, this beautifully designed 5 bedroom, 3.5 bathroom single-family home offers expansive living space with sophisticated finishes throughout. A grand marble foyer sets the tone, leading to an elegant living room with high ceilings, custom built-ins, detailed millwork and hardwood floors. The stunning kitchen features a large island, Wolf range, Viking refrigerator, floor-to-ceiling cabinetry and custom lighting, opening to a sun-filled dining area with corner exposure and direct access to a large fenced patio. Upstairs, the generous primary suite offers a separate office, walk-in closet and beautifully appointed bathroom with double vanity and glass-enclosed shower. Four additional bedrooms and two full guest bathrooms provide exceptional flexibility. A partially finished basement offers additional space for a family room, gym or playroom. An exceptional Charlestown home combining scale, thoughtful design and a premier location.
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: 900 sq ft (the lesser of 900 sq ft or half the 3,015 sq ft principal dwelling). Lot size: 1,821 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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Amenities & Appliances
Gas Water Heater • Range • Dishwasher • Disposal • Microwave • Refrigerator • Freezer • Washer
Geography
Property History
$2,899,000
Sep 16, 2026
MLS® 73578129
$1,200,000
Jun 27, 2011
MLS® 71235264
$1,200,000
May 19, 2011
MLS® 71235264
Listing Agent: Tracy Shea
Listing Office: Coldwell Banker Realty - Boston
MLS® Number: 73578129