
141 Eel River Rd Barnstable — Photo 1 of 42
$15,850,000
Investment Analysis — 141 Eel River Rd
Barnstable, MA 02655 — Osterville
Based on HUD Small Area Fair Market Rent for Barnstable Town, MA MSA, a 8-bedroom in 02655 carries an estimated $3,650/mo in gross rent — about a -0.13% cap rate and $-20,037/yr in estimated NOI at the $15,850,000 list price. Adjust every assumption in the calculator below.
Beds
8
Baths
8
SqFt
7,730
Style
Single Family
Built
1927
Set on 2.35 beautifully landscaped acres along Eel River, this exceptional Osterville waterfront estate enjoys western exposure, sweeping water views, and a substantial deep-water dock with direct access to Nantucket Sound. The setting is defined by an extraordinary combination of privacy, scale, and waterfront amenities, creating a rare sense of arrival and an exceptional connection to the water. The six-bedroom main residence offers approximately 7,000 square feet of living space, with a gracious floor plan designed to take full advantage of the setting. From the grand foyer, panoramic water views immediately draw the eye through the home and toward the expansive grounds and waterfront beyond. The main level offers generous living and entertaining spaces, while the second floor features a spacious primary suite with fireplace, walk-in closet, and private bath, along with five additional bedrooms. The lower level includes a recreation room, exercise room, and abundant storage, with an attached two-car garage. The waterfront grounds are the centerpiece of the property. An expansive pool, glass-enclosed pool house, and substantial deep-water dock create an exceptional setting for summer living, boating, and entertaining. The western exposure brings beautiful afternoon and evening light across the water, while the location provides direct access to Nantucket Sound. A separate two-bedroom carriage house with attached two-car garage and private patio provides comfortable accommodations for guests and extended family. Osterville Village, with its high-end shops and refined dining, is close at hand, as are the area’s renowned golf clubs. With its extraordinary acreage, western water views, deep-water access, pool, guest accommodations, and exceptional privacy, this is a waterfront estate of uncommon scale and presence. The information contained herein has been obtained through sources deemed reliable but cannot be guaranteed as to its accuracy. Buyers are encouraged to do their own due diligence through independent verification.
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 7,730 sq ft principal dwelling). Lot size: 102,366 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
Neighborhood
Shopping • Walk/Jog Trails • Golf • House of Worship • Marina • Private School
Geography
Listing Agent: Robert Kinlin
Listing Office: Berkshire Hathaway HomeServices Robert Paul Properties
MLS® Number: 73585729








