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164 Days on market

280 Warren St Brookline — Photo 1 of 39

$14,850,000

Investment Analysis — 280 Warren St

Brookline, MA 02445

Based on HUD Small Area Fair Market Rent for Boston-Cambridge-Quincy, MA-NH HUD Metro FMR Area, a 6-bedroom in 02445 carries an estimated $5,240/mo in gross rent — about a -0.70% cap rate and $-104,048/yr in estimated NOI at the $14,850,000 list price. Adjust every assumption in the calculator below.

View Standard Listing

Beds

Baths

SqFt

9,065

Style

Single Family

Built

1920

Privately set off Warren St, this exceptional Brookline estate spans over 3.6 acres of beautifully landscaped grounds and over 9,000 SF across four levels, with 6 bedrooms, 6 full and 2 half baths. A striking entry with a sweeping staircase leads to expansive, light-filled living and entertaining spaces rich with charm and detailed moldings. The main level features a mix of formal and informal spaces, multiple offices, and a beautifully designed kitchen with high-end appliances, custom cabinetry, and an eat-in dining area overlooking the grounds. Upstairs, the primary suite includes a luxurious bath and generous dressing rooms, along with five additional bedrooms, family room, and laundry. The serene third floor offers flexible space for a gym, studio, or additional living. Outside, the grounds are unmatched - a pond, patios, firepit, and hot tub perfect for entertaining and everyday living. A one-of-a-kind offering in one of Brookline's most sought-after neighborhoods.

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 9,065 sq ft principal dwelling). Lot size: 160,496 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.