
645 S Orleans Orleans — Photo 1 of 42
Recent Drop: $1,250,000
$2,700,000
Orleans, MA 02653
Beds
7
Baths
6.5
SqFt
3,549
Style
Single Family
Built
1930
For the first time in generations, this landmark Pleasant Bay compound—anchored by the iconic "Topside" main residence and the charming two-bedroom "Boathouse"—is offered as a rare, generational waterfront estate, a site long cherished by those who have called it home. With a deep-water dock, moorings, and direct access to the bay, the property delivers a front-row seat to the rhythms of Pleasant Bay and boundless recreation. Both homes enjoy sweeping 270-degree views across the water to Eastward Ho, the Chatham Yacht Club, and the Atlantic beyond. Thoughtfully sited by its original architect to capture the light and water at every turn, "Topside" offers 5 bedrooms and 4.5 baths with timeless coastal character and spaces designed for gathering, while the "Boathouse" sits just above the shoreline, featuring 2 bedrooms, 1 bathroom, and its own deck for quiet moments by the sea. A secluded garden patio and broad waterfront lawn offer a blend of intimacy and scale. With a strong rental history and potential for expansion or personalization, this is a lifestyle property that invites multigenerational living, savvy investment, or a private retreat. A once-in-a-lifetime opportunity to own one of Cape Cod's most storied, landmark waterfront settings.
* Analysis is based on 17 actively listed and recently sold comparable properties strictly within Orleans, MA.
Was $3,495,000
Jan 31, 2026
MLS® 73373131
Was $3,950,000
Sep 4, 2025
MLS® 73373131
May 12, 2025
MLS® 73373131
Mar 24, 2025
MLS® 73295426
Sep 26, 2024
MLS® 73295426
6,443
U.S. Census Bureau, ACS 2024 5-Year Estimates (B01003)
$103K
U.S. Census Bureau, ACS 2024 5-Year Estimates (B19013)
19.0%
U.S. Census Bureau, ACS 2024 5-Year Estimates (B25003)
513 housing units permitted in the last 12 months (-50% vs the prior 12 months) — 128 in 5+ unit buildings
U.S. Census Bureau, Building Permits Survey (through Jun '26)
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 3,549 sq ft principal dwelling). Lot size: 10,890 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.
Listing Agent: Provided by MLS PIN
Listing Office: Provided by MLS PIN
MLS® Number: 73373131
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