For Sale · Single Family
643 Main St
Harwich, MA 02645
$1,399,000
$487 per sq ft
- 6
- beds
- 3
- baths
- 2,872
- sq ft
Est. payment: $7,696/mo Estimated. Taxes and insurance included.
- Lot (sq ft)
- 62,291
- Year Built
- 1919
- Type
- Single Family
- Status
- For Sale
- Property taxes (2026)
- $5,664
- Assessed value
- $974,800
- Days on Market
- 4
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!
Facts & features
Interior
- Total rooms
- 11
- Appliances
- Electric Water Heater, Water Heater, Range, Dishwasher, Microwave, Refrigerator, Washer, Dryer
- Flooring
- Wood, Tile, Carpet, Flooring - Wood, Flooring - Wall to Wall Carpet
- Fireplaces
- 1
- Laundry
- First Floor, Electric Dryer Hookup, Washer Hookup
- Basement
- Full, Interior Entry, Bulkhead
- Interior features
- Bathroom - Full, Dining Area, Home Office, Accessory Apt.
Systems & utilities
- Heating
- Baseboard, Oil
- Cooling
- Window Unit(s)
- Water
- Public
- Sewer
- Private Sewer
- Electric
- 110 Volts, Circuit Breakers
- Utilities
- for Electric Range, for Electric Dryer, Washer Hookup
Exterior & parking
- Parking
- Detached, Garage Door Opener, Heated Garage, Workshop in Garage, Off Street, Paved
- Garage spaces
- 2
- Total parking
- 10
Construction
- Architectural style
- Cape
- Construction materials
- Frame
- Foundation
- Block
- Roof
- Shingle
- Year built
- 1919
Flood risk
Location
Courtesy of Keller Williams Realty
MLS #: 73555500 · Updated: July 31, 2026
Listing data is provided in part by MLS PIN and PrimeMLS/NEREN and is for consumers' personal, non-commercial use. Information is deemed reliable but not guaranteed.


