
501 Eel River Rd Barnstable — Photo 1 of 42
Recent Drop: $550,000
$9,950,000
Investment Analysis — 501 Eel River Rd
Barnstable, MA 02655 — Osterville
Based on HUD Small Area Fair Market Rent for Barnstable Town, MA MSA, a 6-bedroom in 02655 carries an estimated $3,650/mo in gross rent — about a -0.24% cap rate and $-23,575/yr in estimated NOI at the $9,950,000 list price. Adjust every assumption in the calculator below.
Beds
6
Baths
8
SqFt
8,203
Style
Single Family
Built
2017
Discover the epitome of luxury living in this custom-designed waterfront estate, featuring breathtaking views of Eel River and Nantucket Sound. Located in the village of Osterville and set on an expansive and beautifully landscaped 2.4-acre lot, this stunning residence features over 8,000 square feet of meticulously crafted living space with rich details, modern comforts and extraordinary views. The grand interiors seamlessly blend with the exquisitely landscaped outdoor spaces, featuring an inground pool, hot tub, spacious pool house, and a substantial private deep-water dock. Upon entering the home, the grand foyer leads you into the magnificent great room with a two-story custom fireplace, where panoramic vistas of the water and breathtaking sunsets set the scene for unforgettable family gatherings as well as effortless entertaining. The generous floor plan also features a refined library, formal dining room, a gourmet kitchen with center island, custom cabinetry and top-of-the-line appliances and a state-of-the-art home theatre. The six en-suite bedrooms include a first-floor suite with French doors leading to the back yard and a lavish primary suite with a luxurious bathroom, two walk-in closets and a private deck overlooking the water. Enhanced with modern conveniences such as a Sonos whole-house sound system and a 9-zone Hydro air system, every detail has been carefully planned and implemented. Additional highlights include a private guest suite above the attached 3-car garage and a sprawling entertainment room with a balcony on the third level highlighted by western exposure to experience breathtaking sunsets. Located just minutes from the upscale boutiques and renowned dining of Osterville village, this extraordinary property offers a lifestyle of unparalleled elegance and tranquility by the sea. 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 8,203 sq ft principal dwelling). Lot size: 104,544 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
Range • Dishwasher • Microwave • Refrigerator • Washer • Dryer • Range Hood
Neighborhood
Shopping • Tennis Court(s) • Park • Golf • Conservation Area • Highway Access
Geography
Floorplan Breakdown
Structural Layout
Living Room
Lvl nullCathedral Ceiling(s), Beamed Ceilings, Flooring - Wood, French Doors, Exterior Access
Kitchen
Lvl nullFlooring - Wood, Dining Area, Pantry, Kitchen Island, Breakfast Bar / Nook, Exterior Access, Slider, Pot Filler Faucet
Master Bedroom
Lvl nullBathroom - Full, Walk-In Closet(s), Closet, Flooring - Wood, Balcony - Exterior, Slider
Bedroom 3
Lvl nullBathroom - Full, Walk-In Closet(s), Flooring - Wood
Bedroom 4
Lvl nullBathroom - Full, Walk-In Closet(s), Flooring - Wood, Balcony / Deck
Bedroom 5
Lvl nullBathroom - Full, Walk-In Closet(s), Flooring - Wood
Property History
$9,950,000
Was $10,500,000
Feb 20, 2026
MLS® 73285680
$10,500,000
Sep 4, 2024
MLS® 73285680
Listing Agent: Robert Kinlin
Listing Office: Berkshire Hathaway HomeServices Robert Paul Properties
MLS® Number: 73285680
