51 Undine Ave Winthrop — Photo 1 of 36
Recent Drop: $40,100
$659,900
Investment Analysis — 51 Undine Ave
Winthrop, MA 02152
Based on HUD Small Area Fair Market Rent for Boston-Cambridge-Quincy, MA-NH HUD Metro FMR Area, a 3-bedroom in 02152 carries an estimated $3,140/mo in gross rent — about a 3.59% cap rate and $23,668/yr in estimated NOI at the $659,900 list price. Adjust every assumption in the calculator below.
Beds
3
Baths
1
SqFt
1,250
Style
Single Family
Built
1900
Experience coastal living in a vibrant beachside community featuring a park with tennis and basketball courts, a dog park, and a scenic shoreline overlooking the Boston skyline. This thoughtfully updated home offers peace of mind with a recently painted exterior, a roof approximately 5 years old, and upgraded electrical and plumbing systems. Inside, you’ll find newer flooring, fresh interior paint, updated lighting, and a beautifully remodeled kitchen complete with stainless steel appliances. The home also features an updated bathroom, newer windows, and exterior doors throughout. The first floor boasts an open and versatile layout with a modern kitchen, spacious living and dining areas, and a bedroom currently being used a home office—all enhanced by water views. Upstairs, you’ll find two well-appointed bedrooms and a full bathroom. Conveniently located near public transportation, including bus routes with direct access to the MBTA.
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: 625 sq ft (the lesser of 900 sq ft or half the 1,250 sq ft principal dwelling). Lot size: 3,085 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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Interior Specifications
Climate & Utilities
Building & Exterior
Property & Lot
Amenities & Appliances
Gas Water Heater • Range • Refrigerator
Neighborhood
Public Transportation • Park • Marina
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Floorplan Breakdown
Structural Layout
Living Room
Lvl FirstDining Room
Lvl FirstKitchen
Lvl FirstPrimary Bedroom
Lvl SecondBedroom 2
Lvl SecondBathroom 1
Lvl SecondProperty History
$659,900
Was $669,999
Sep 8, 2026
MLS® 73509184
$669,999
Was $670,000
Jul 29, 2026
MLS® 73509184
$670,000
Was $680,000
Jul 15, 2026
MLS® 73509184
$680,000
Was $690,000
Jul 1, 2026
MLS® 73509184
$690,000
Was $695,000
Jun 29, 2026
MLS® 73509184
$695,000
Was $700,001
Jun 3, 2026
MLS® 73509184
$700,001
Was $700,000
May 15, 2026
MLS® 73509184
$700,000
Apr 29, 2026
MLS® 73509184
Listing Agent: The Caceda Team
Listing Office: Coldwell Banker Realty - Lynnfield
MLS® Number: 73509184