46 Great Bay Rd Barnstable — Photo 1 of 38
Recent Drop: $1,000,000
$7,500,000
Investment Analysis — 46 Great Bay Rd
Barnstable, MA 02655 — Osterville
Based on HUD Small Area Fair Market Rent for Barnstable Town, MA MSA, a 3-bedroom in 02655 carries an estimated $3,180/mo in gross rent — about a -0.38% cap rate and $-28,145/yr in estimated NOI at the $7,500,000 list price. Adjust every assumption in the calculator below.
Beds
3
Baths
5
SqFt
4,831
Style
Single Family
Built
1946
Nestled along the sparkling shores of North Bay in the heart of Osterville, this exceptional Waterfront Estate delivers timeless beauty and relaxed elegance. Wake each morning to sweeping water views and ocean breezes, step onto your boat from the Substantial Dock. Featuring a Primary Suite and Guest Suite both on the 1st Floor, the residence is thoughtfully designed to blend coastal charm with modern comfort, with sun-filled living spaces, expansive windows, and seamless indoor-outdoor flow perfect for entertaining or quiet seaside relaxation. Waterfront Chef's Kitchen with Cathedral Ceiling, Living Rooms, Dens, separate living quarters complete with a Kitchen over the 3-Bay Garage. Step outside to your private waterfront oasis, where launching a kayak at sunrise, enjoying afternoon boating on North Bay, or taking sunset walks with the dog, every day feels like a vacation. Located just moments from Osterville Village's boutiques, restaurants, and marinas.
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 4,831 sq ft principal dwelling). Lot size: 33,977 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.
Property Details
Financials
Parking
Interior Specifications
Climate & Utilities
Building & Exterior
Property & Lot
Amenities & Appliances
Electric Water Heater
Geography
Floorplan Breakdown
Structural Layout
Living Room
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Lvl SecondProperty History
$7,500,000
Was $8,500,000
Jul 21, 2026
MLS® 73520995
$8,500,000
May 19, 2026
MLS® 73520995
Listing Agent: Chuck Tuttle
Listing Office: William Raveis R.E. & Home Services
MLS® Number: 73520995
