Single Family Residence at 643 Main St, Harwich MA 02645, Harwich
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42 photos

$1,299,000

643 Main St, Harwich MA 02645
Harwich, MA 02645
Listed by Richard J. Waystack
Bedrooms
6
Bathrooms
3
Living area
2,872 sqft
Year built
1919

About this home

A rare opportunity in Harwich Center! Set on approximately 1.5 acres, this one-of-a-kind property offers endless possibilities with a main home, a separate ADU with its own private driveway, and a detached mixed-use garage. With a total of 6 bedrooms, it's ideal for multigenerational living, extended family, or guests, while the ADU also provides excellent rental history. The detached garage offers incredible flexibility for a business, workshop, storage, hobby space, or additional rental opportunity, with plenty of room for vehicles, bikes, and tools. Outside, enjoy a beautifully landscaped backyard with multiple sheds ready to become a man cave, she shed, home bar, art studio, or your own private retreat around the fire pit. Properties offering this much space, versatility, and potential rarely come to market in Harwich Center. Don't miss your chance to make this truly unique property yours!

Highlights

Fireplace

Property details

MLS #
73555500
Property type
Single Family Residence
Subdivision
N/A
Status
Active
Days on market
66
On market date
July 27, 2026
Stories
N/A
Total bathrooms
3
Garage spaces
2
Parking spaces
10
Lot size
1.43 acres
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Nearby schools

Within 10 miles. School directory data from the National Center for Education Statistics (NCES), accessed via the Urban Institute Education Data API. Local Score is calculated by INNOVATE Real Estate; where a state rating is shown, it comes from that state's own official school report card (e.g. NC Dept. of Public Instruction, SC Report Card).

Elementary
Harwich Elementary School
0.17 mi away · Grades -1-4
Nearest school -- attendance-zone data not available here
5.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
492
Student:teacher ratio
10.9:1
District
Monomoy Regional School District
MiddleCharter
Cape Cod Lighthouse Charter School
3.44 mi away · Grades 6-8
Nearest school -- attendance-zone data not available here
4.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
250
Student:teacher ratio
13.9:1
District
Cape Cod Lighthouse Charter (District)
High
Monomoy Regional High School
0.8 mi away · Grades 8-12
Nearest school -- attendance-zone data not available here
5.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
670
Student:teacher ratio
11.0:1
District
Monomoy Regional School District

Walkability

Blended score for Harwich's center, calculated by INNOVATE Real Estate from two sources: the EPA's National Walkability Index (street network, transit, land-use mix) and Google Places amenity data (what's actually reachable on foot from this point). EPA National Walkability Index only -- nearby-amenity data not cached yet for this area.

37
Car-dependent
out of 100
EPA National Walkability Index
7.3 / 20 -- Below average walkable

Mortgage calculator

Estimate only - actual rate and payment depend on your lender, credit, and loan program.

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Est. monthly payment
$7,973/mo
$259,800 down
$1,039,200 loan
Principal & interest$6,740
Property tax (est.)$1,083
Home insurance (est.)$150

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Data source: Listing information provided by MLS Property Information Network via Trestle/CoreLogic. Last updated 12 days ago.

Information herein deemed reliable but not guaranteed; all measurements, school assignments, HOA fees, taxes, and feature lists are approximate and should be independently verified. Equal Housing Opportunity.