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!
Single-familyProperty Type
1965Year Built
1.33 acresLot Size
$418Price/Sq.Ft.
1 garage spacesParking
Listed by Natalia Weiner• Gibson Sotheby's International Realty
Lower Cape, located between Harwich Port and Chatham, is a coastal and village-centered Harwich neighborhood with salt-marsh inlets and bike-trail access. The neighborhood’s character concentrates around the Route 28 corridor near Harwich Port’s Main Street, where galleries, independent shops, and sidewalk cafés set a relaxed, walkable rhythm. Architecture leans toward classic Cape cottages, shingled beach houses, and low-slung ranches tucked behind pitch pines. Red River Beach and Bank Street Beach frame daily life with wide sand and calm water views. The Cape Cod Rail Trail threads nearby for car-free rides toward Nickerson State Park. Community touchstones include the Cape Cod Lavender Farm, the Cape Cod Baseball League’s Harwich Mariners at Whitehouse Field, and the Cape Cod Theatre Company/Harwich Junior Theatre.
Provided by Walk Score and Local Logic
Offer insights
21 Old Colony Rd · $849,000
$872K and above
75% chance or better to win
Why $872K+ is a strong offer
DAYS ON MARKET
6 days
The average home goes pending in 24 days.
SALE-TO-LIST
98.8%
Most homes are selling 1% below list price.
About offer insights
Property details
Interior
Exterior
Finance
Kitchen
Bathroom
Bedroom
Living
Interior features
6 total rooms
Full basement with interior entry and bulkhead
Fireplace (1)
Bathrooms
2 full bathrooms
Laundry & utility
Electric water heater
Heating & cooling
Baseboard heating
Exterior features
Wooded, cleared, and level lot
Soundfront/nearby sound access; 1–2 miles to the beach; public beach ownership
Public road frontage
Shingle roof
Home design
Single family residence
Accessory dwelling unit (ADU) present
Parking
Detached garage (1 garage space)
1 covered space
5 open parking spaces
6 total parking spaces
Off-street, paved parking
Construction
Concrete perimeter foundation
Built (year per public records)
Utilities
Public water
Sewer: inspection required for sale
HOA & community
Not a senior community
Electricity and solar
View estimated energy costs and solar savings for this home
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 456 sq. ft, 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!
MLS PIN #73566214
Aug 18, 2026
Listed
$849,000
$418/sq ft
Year
Property tax
Land + Additions
Assessment*
2022
$4,542 (−0.3%)
$232,000 + $328,100
$560,100
2021
$4,556
$229,200 + $300,600
$529,800
2020
$4,552 (+5.4%)
$228,500 + $292,900
$521,400
2019
$4,320 (+12.3%)
$219,600 + $278,700
$498,300
2017
$3,848 (+2.1%)
$162,700 + $266,300
$429,000
2016
$3,769 (−1.2%)
$162,700 + $252,800
$415,500
2015
$3,813
$178,700 + $246,400
$425,100
Public record
Beds
—
Baths
—
Stories
—
Lot width
—
Lot depth
—
Lot size
1.33 Acres
Year renovated
—
Finished Sq. Ft.
—
Unfinished Sq. Ft.
—
Total Sq. Ft.
—
Year built
—
Style
Other
County
Barnstable County
APN
4291471
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Jul 19, 2023.
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
1/10 Fire Factor
Unlikely to be in a wildfire in next 30 years
5/10 Heat Factor
7 days above 84° expected this year, 21 days in 30 years
8/10 Wind Factor
80% chance of strong winds in next 30 years
2/10 Air Factor
2 unhealthy days expected this year, 2 days in 30 years
Provided by First Street
Historical weather
Harwich, MA • 02645
Average low and high temperatures (°F)
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41
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62
71
58
62
48
52
39
41
29
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
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Sun exposure
Try the sun simulator tool to see how light moves across the property at different times of day and year.
Provided by Shadowmap
Redfin Estimate for 21 Old Colony Rd
$853,088
$4,088 over list price of $849K
Nearby comparable homes
The Redfin Estimate uses 6 recent nearby sales, priced between $743K to $975K.