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Louann Santerre
REALTOR®
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643 Main St, Harwich, MA 02645

$1,399,000
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New to the Market Active
BEDS6 BATHS3 full SQUARE FEET2,872 MLS#73555500
STATUSActive PROPERTY TYPEResidential - Single Family

Property Description

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!

643 Main St | MLS# 73555500

This single family home located at 643 Main St, Harwich, MA 02645 is currently listed for sale with an asking price of $1,399,000. This property was built in 1919 and has 6 bedrooms and 3 full baths with 2872 sq. ft. Search Harwich real estate on louannsanterre.masiellogrouprealestate.com today.

Property Features

Property Type: Residential - Single Family
Basement: Full, Interior Entry, Bulkhead
Basement: Yes
Cooling: Window Unit(s)
Fireplaces: 1
Garage: 2
Heating: Baseboard, Oil
Home Style: Cape
Lot Size: 1.43 Acres
Roof Type: Shingle
Taxes: $5,664
Year Built: 1919

Amenities

Bathroom - Full
Dining Area
Home Office
Accessory Apt.

Feature Descriptions

Appliances: Electric Water Heater, Water Heater, Range, Dishwasher, Microwave, Refrigerator, Washer, Dryer
Building Area Total: 2872
Community Features: Golf, Bike Path, Conservation Area, House of Worship, Public School
Compensation Based On: N/A
Compensation Broker Transaction: N/A
Compensation Buyer Agency: N/A
Compensation Sub Agency: N/A
Compensation Sub Agency Offered: N/A
Dining Room: Flooring - Wall to Wall Carpet
Electric: 110 Volts, Circuit Breakers
Exterior: Frame
Family Room: Flooring - Wall to Wall Carpet, Recessed Lighting
Fireplace Features: Family Room
Fireplace Y/N: Yes
Flooring: Wood, Tile, Carpet, Flooring - Wood, Flooring - Wall to Wall Carpet
GarageY/N: Yes
HeatingY/N: 1
Kitchen: Flooring - Wood, Kitchen Island, Cabinets - Upgraded, Recessed Lighting
Laundry: First Floor, Electric Dryer Hookup, Washer Hookup
Living Room: Flooring - Wall to Wall Carpet
Lot Features: Cleared, Level
Master Bedroom: Closet, Flooring - Wall to Wall Carpet
Office: Flooring - Wood
Open Parking Y/N: Yes
Parcel Number: M:0040 B:0000 L:00E40,2334131
Parking Features: Detached, Garage Door Opener, Heated Garage, Workshop in Garage, Off Street, Paved
Parking Total: 10
Rooms Total: 11
Sewer: Private Sewer
Utilities: for Electric Range, for Electric Dryer, Washer Hookup
Water: Public
Waterfront Features: Ocean, Beach Ownership(Public)

Room Sizes

Bathroom 1: 11.70 X 5.40 Level - First
Bathroom 2: 6.90 X 8.40 Level - Second
Bedroom 2: 14.00 X 11.20 Level - Second
Bedroom 3: 10.30 X 11.11 Level - Second
Bedroom 4: 9.40 X 8.40 Level - Second
Bedroom 5: 9.10 X 9.30 Level - Second
Dining Room: 10.80 X 11.70 Level - First
Family Room: 21.80 X 27.30 Level - First
Kitchen: 16.50 X 11.70 Level - First
Living Room: 18.60 X 11.60 Level - First
Primary Bedroom: 11.70 X 17.10 Level - First
Office: 9.10 X 11.60 Level - First

Local Schools

High School: Monomoy Reg Hs
Middle School: Monomoy Reg Ms
Elementary School: Harwich Elem School

Listed By / Shown By

Listed By

Agency Name: Keller Williams Realty
Agent Name: Richard J. Waystack
Agency Phone: 508-534-7200

agent picture

Shown By

Agent Name: Louann Santerre
Agent Phone:
Agency Title: Better Homes and Gardens Real Estate The Masiello Group

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Estimated Payment

$ 3,993.61 per month $3,113.57 Principal & Interest $472.00 Property Tax $408.04 Homeowner's Insurance

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Disclaimer: All information deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. Neither listing broker(s) or information provider(s) shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. Listing(s) information is provided for consumers personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information on this site was last updated 07/28/2026. The listing information on this page last changed on 07/28/2026. The data relating to real estate for sale on this website comes in part from the Internet Data Exchange program of Delta Media Group MLS (last updated Tue 07/28/2026 2:45:54 AM EST) or MLSPIN MLS (last updated Mon 07/27/2026 11:38:26 PM EST) or Prime MLS (last updated Mon 07/27/2026 11:33:26 PM EST) or MREIS (last updated Tue 07/28/2026 2:05:12 AM EST). Real estate listings held by brokerage firms other than Better Homes and Gardens Real Estate The Masiello Group may be marked with the Internet Data Exchange logo and detailed information about those properties will include the name of the listing broker(s) when required by the MLS. All rights reserved.
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