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Rahel Choi

I'm Rahel Choi, a bilingual (English/Korean) Natick, MA real estate agent helping first-time buyers, families, and investors across MetroWest—from first search to closing.

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  • 361 Newbury Street, Boston, MA, 02115
  • (857) 250-7248
  • choicehomesma@gmail.com

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Exp Realty

© 2026 Rahel Choi. All rights reserved.
Equal Housing Opportunity. Information deemed reliable but not guaranteed.

  1. Home
  2. Listings
  3. 21 Old Colony Rd, Harwich, MA 02645
Active
7 Days on market
21 Old Colony Rd Harwich — Photo 1 of 42

21 Old Colony Rd Harwich — Photo 1 of 42

$849,000

21 Old Colony Rd, Harwich, MA 02645

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!

Market Value Analysis

This Property
Size (SqFt) →Price →
This Property$418/sqft
Local Avg (Harwich)$574/sqft
27% BelowMarket Average

* Analysis is based on 19 actively listed and recently sold comparable properties strictly within Harwich, MA.

Property Details

Financials

Original Price$849,000
Annual Taxes$4,980

Parking

Garage1
Off-Street6

Interior Specifications

Total Rooms6
Fireplaces1
Flooring--
BasementFull, Interior Entry, Bulkhead

Climate & Utilities

HeatingBaseboard
CoolingNone
WaterPublic
SewerInspection Required for Sale

Building & Exterior

Construction--
RoofShingle
FoundationConcrete Perimeter
ZoningR

Property & Lot

Acres1.33
SqFt Lot58,117
Lot FeaturesWooded, Cleared, Level

Amenities & Appliances

Electric Water Heater

Geography

Population

11,288

U.S. Census Bureau, ACS 2024 5-Year Estimates (B01003)

Median Household Income

$104K

U.S. Census Bureau, ACS 2024 5-Year Estimates (B19013)

Renter-Occupied Homes

15.6%

U.S. Census Bureau, ACS 2024 5-Year Estimates (B25003)

New Construction Permits — Barnstable County

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)

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 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.

Full Harwich, MA market report ZIP 02645 market data
Listing Provided By

Listing Agent: Natalia Weiner

Listing Office: Gibson Sotheby's International Realty

MLS® Number: 73566214

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