643 Main Street
Harwich, MA 02645
- 6 Beds
- 3 Baths
- 2,872 sqft (on 1.43 acres)
6 Beds
3 Baths
2,872 sqft
(on 1.43 acres)
Home Highlights
Parking
Garage
Outdoor
Porch, Patio
Climate Control
Heating & Cooling
Price/Sqft
$487
Listed
Less than a day ago
Local Information
-- mins to
About this House
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!
Open House
Friday, July 31
4:00 PM to 5:30 PM
Saturday, August 01
11:00 AM to 12:30 PM
Sunday, August 02
11:00 AM to 12:30 PM
Home Details for 643 Main Street
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Interior Details Basement: Bulkhead Access,Interior Entry,FullNumber of Rooms: 11Types of Rooms: Master Bedroom, Bedroom 2, Bedroom 3, Bedroom 4, Dining Room, Kitchen, Living Room |
Beds & Baths Number of Bedrooms: 6Number of Bathrooms: 3Number of Bathrooms (full): 3 |
Dimensions and Layout Living Area: 2872 Square FeetFoundation Area: 1392 |
Appliances & Utilities Appliances: Dishwasher, Washer, Refrigerator, Electric Range, Microwave, Electric Dryer, Electric Water HeaterDishwasherLaundry: Laundry Room, First FloorMicrowaveRefrigeratorWasher |
Heating & Cooling Heating: Hot WaterHas CoolingHas HeatingHeating Fuel: Hot Water |
Fireplace & Spa Number of Fireplaces: 1Has a Fireplace |
Windows, Doors, Floors & Walls Flooring: Wood, Carpet, Tile |
Levels, Entrance, & Accessibility Stories: 2Floors: Wood, Carpet, Tile |
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Exterior Home Features Roof: AsphaltPatio / Porch: Patio, PorchExterior: GardenFoundation: BlockGardenNo Private Pool |
Parking & Garage Number of Garage Spaces: 2Number of Covered Spaces: 2No CarportHas a GarageNo Attached GarageHas Open ParkingParking Spaces: 8Parking: Garage, Open |
Frontage Road Frontage: PublicRoad Surface Type: PavedNot on Waterfront |
Water & Sewer Sewer: Septic Tank |
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Days on Market: <1 day on Trulia |
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Year Built Year Built: 1919 |
Property Type / Style Property Type: ResidentialProperty Subtype: Single Family ResidenceArchitecture: Cape Cod |
Building Construction Materials: Shingle SidingNot a New ConstructionNot Attached PropertyDoes Not Include Home Warranty |
Property Information Condition: ActualParcel Number: HARW M:40 B: L:E40 |
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Price List Price: $1,399,000Price Per Sqft: $487 |
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MLS Status: Active |
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Direction & Address City: Harwich |
School Information Elementary School District: MonomoyJr High / Middle School District: MonomoyHigh School District: Monomoy |
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Listing Agent Listing ID: 22603623 |
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Building Area Building Area: 2872 Square Feet |
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No HOA |
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Lot Area: 1.43 Acres |
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Special Conditions: None |
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BasementMls Number: 22603623Showing Requirements: Appointment Required, Call Listing Agent |
Last check for updates: about 1 hour ago
Listing courtesy of Richard J Waystack, (508) 776-0964
Keller Williams Realty
Market trends in Harwich
Last updated June 2026
Avg. sale price
—
Sale-to-List Price
—
Price per sq ft
—
Available listings
34
3MoM
Price History for 643 Main Street
| Date | Price | Event | Source |
|---|---|---|---|
| 07/27/2026 | $1,399,000 | Listed For Sale | MLS PIN #73555500 |
| 07/10/2001 | $50,000 | Sold | N/A |
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New Listings near 643 Main Street
Property Tax and Assessment
| Year | 2025 |
|---|---|
| Tax | $5,599 |
| Assessment | $947,300 |
Home facts updated by county records
Comparable Sales for 643 Main Street
Address | Distance | Property Type | Sold Price | Sold Date | Bed | Bath | Sqft |
|---|---|---|---|---|---|---|---|
0.25 | Single-Family Home | $2,195,000 | 06/12/26 | 4 | 3.5 | 2,528 | |
0.52 | Single-Family Home | $1,550,000 | 04/08/26 | 4 | 3.5 | 3,351 | |
0.11 | Single-Family Home | $591,000 | 02/18/26 | 3 | 2 | 1,787 | |
0.55 | Single-Family Home | $1,100,000 | 11/17/25 | 4 | 2.5 | 2,401 | |
0.46 | Single-Family Home | $1,765,000 | 06/05/26 | 4 | 3 | 3,100 | |
0.51 | Single-Family Home | $585,000 | 03/20/26 | 3 | 3 | 2,330 | |
0.51 | Single-Family Home | $585,000 | 03/20/26 | 3 | 3 | 2,330 | |
0.35 | Single-Family Home | $900,000 | 09/26/25 | 3 | 2 | 2,096 | |
0.58 | Single-Family Home | $1,000,000 | 11/14/25 | 4 | 2.5 | 2,388 | |
0.41 | Single-Family Home | $1,200,000 | 07/30/25 | 4 | 2.5 | 2,256 |
Nearby homes
Get a sense of prices in the area by checking nearby homes.Assigned Schools
These are the assigned schools for 643 Main Street.
What Locals Say about Harwich
At least 45 Trulia users voted on each feature.
91 % Say car is needed
90 % Say parking is easy
88 % Say yards are well-kept
83 % Say it's dog friendly
83 % Say there's wildlife
80 % Say it's quiet
76 % Say they plan to stay for at least 5 years
76 % Say people would walk alone at night
69 % Say neighbors are friendly
69 % Say there's holiday spirit
47 % Say kids play outside
40 % Say it's walkable to grocery stores
38 % Say there are community events
36 % Say streets are well-lit
35 % Say it's walkable to restaurants
29 % Say there are sidewalks
Sourced by Trulia users. Learn more about our methodology.
LGBTQ Local Legal Protections
LGBTQ Local Legal Protections
Richard J Waystack, Keller Williams Realty
Agent Phone: (508) 776-0964

All data relating to real estate for sale on this page comes from the Broker Reciprocity (BR) of the Cape Cod & Islands Multiple Listing Service, Inc. Detailed information about real estate listings held by brokerage firms other than CC&I Assoc. of REALTORS®, Inc. includes the name of the listing company. Neither the listing company nor CC&I Assoc. of REALTORS®, Inc. shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. The Broker providing this data believes it to be correct, but advises interested parties to confirm any item before relying on it in a purchase decision. This site was last updated 2022-04-05 08:58:10 PDT. All properties are subject to prior sale, changes, or withdrawal. Copyright 2022© Cape Cod & Islands Multiple Listing Service, Inc. All rights reserved.
643 Main Street, Harwich, MA 02645 is a 6 bedroom, 3 bathroom, 2,872 sqft single-family home built in 1919. This property is currently available for sale and was listed by CCIMLS on Jul 27, 2026. The MLS # for this home is MLS# 22603623.

