
155 Irving Avenue Barnstable — Photo 1 of 25
Recent Drop: $5,000,000
$16,500,000
Investment Analysis — 155 Irving Avenue
Barnstable, MA 02647 — Hyannisport
Based on HUD Small Area Fair Market Rent for Barnstable Town, MA MSA, a 7-bedroom in 02647 carries an estimated $3,440/mo in gross rent — about a -0.35% cap rate and $-57,501/yr in estimated NOI at the $16,500,000 list price. Adjust every assumption in the calculator below.
Beds
7
Baths
7.5
SqFt
8,765
Style
Single Family
Built
1914
A rare and extraordinary offering, this iconic beachfront estate stands as one of the finest properties on all of Cape Cod. Located in the heart of Hyannis Port, the stately colonial residence is perfectly set on magnificent grounds designed by the Olmsted Brothers, with mature trees, manicured hedges, and rolling lawns that give way to 410' of pristine sandy beach. From every vantage point across the property, mesmerizing views of Nantucket Sound, Hyannis Port Harbor, and Great Island provide a backdrop of unsurpassed natural beauty. Immediately upon entering the residence, unobstructed vistas take center stage and continue throughout each room. Grand gathering spaces seamlessly connect to the outdoor living areas, with thoughtful proportions and scale for every occasion. The light-filled kitchen includes an informal breakfast area and direct access to the pool and waterside terrace. In the study and wet bar, rich millwork and exquisite craftsmanship lend a sense of warmth that carries into the formal dining room. A luxurious primary suite and six well-appointed guest bedrooms provide refined accommodations for all.This inimitable legacy estate is steps from the West Beach Club and Hyannis Port Yacht Club, with Cape Cod's best golf courses, deep-water marinas, Cape Cod Gateway Airport, and ferry service to Martha's Vineyard and Nantucket just minutes away. A once-in-a-lifetime opportunity, one of the most iconic estates on the Eastern Seaboard awaits its next chapter.
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 8,765 sq ft principal dwelling). Lot size: 106,286 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
Gas Water Heater • Water Heater
Neighborhood
Shopping • Golf • Medical Facility • Highway Access • House of Worship • Marina
Geography
Property History
$16,500,000
Was $21,500,000
Aug 13, 2026
MLS® 73457530
$21,500,000
Nov 24, 2025
MLS® 73457530
$18,500,000
Oct 31, 2025
MLS® 73435920
$18,500,000
Sep 19, 2025
MLS® 73435920
$19,800,000
Feb 21, 2025
MLS® 73300947
$19,800,000
Oct 10, 2024
MLS® 73300947
Listing Agent: Paul E. Grover
Listing Office: Berkshire Hathaway HomeServices Robert Paul Properties
MLS® Number: 73457530