
21 Old Colony Rd Harwich — Photo 1 of 42
$849,000
Harwich, MA 02645
Beds
4
Baths
2
SqFt
2,031
Style
Single Family
Built
1965
Set on a spacious 1.3-acre lot in desirable Harwich Center, this 3-bedroom, 2-bath Cape offers exceptional space, versatility, and potential. The home features an enclosed porch, a flexible floor plan, and a one-car garage. An additional detached one-bedroom ADU has been completely gutted and is ready to be finished—ideal for guest accommodations, extended family, a home office, studio, or potential rental income, subject to town approvals. The expansive lot offers plenty of room to create a private outdoor retreat, with potential for a pool or future expansion. Ideally located near Brooks Park for pickleball and recreation, the Cape Cod Rail Trail, Harwich Center shops and restaurants, and the beaches, dining, and boutiques of Harwich Port. A unique opportunity with endless possibilities in the heart of Harwich!
* Analysis is based on 19 actively listed and recently sold comparable properties strictly within Harwich, MA.
Electric Water Heater
11,288
U.S. Census Bureau, ACS 2024 5-Year Estimates (B01003)
$104K
U.S. Census Bureau, ACS 2024 5-Year Estimates (B19013)
15.6%
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 2,031 sq ft principal dwelling). Lot size: 58,117 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: Natalia Weiner
Listing Office: Gibson Sotheby's International Realty
MLS® Number: 73566214
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