643 Main Street, Harwich, MA 02645
Property image
Property image
FOR SALE
NEW
OPEN FRI, 4-5:30PM
3D VIEW
1.43 ACRES

643 Main Street
Harwich, MA 02645

  • 6 Beds
  • 3 Baths
  • 2,872 sqft (on 1.43 acres)

$1,399,000

Est. Mortgage $7,845/mo*

$1,399,000

Est. Mortgage $7,845/mo*
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

  • Map ViewExplore the area around 643 Main Street.
  • Schools1 Preschool School2 Elementary Schools2 Middle Schools1 High School
  • Shop & Eat
-- mins to
Commute Destination

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

Interior Features

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

Exterior Features

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

Days on Market

Days on Market: <1 day on Trulia

Property Information

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

Price & Status

Price
List Price: $1,399,000Price Per Sqft: $487

Active Status

MLS Status: Active

Location

Direction & Address
City: Harwich
School Information
Elementary School District: MonomoyJr High / Middle School District: MonomoyHigh School District: Monomoy

Agent Information

Listing Agent
Listing ID: 22603623

Building

Building Area
Building Area: 2872 Square Feet

HOA

No HOA

Lot Information

Lot Area: 1.43 Acres

Listing Info

Special Conditions: None

Miscellaneous

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
Source: CCIMLS, MLS#22603623
Also Listed on MLS PIN, MLS PIN, CCIMLS.

Market trends in Harwich

Last updated June 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
—
Sale-to-List Price
—
Price per sq ft
—
Available listings
34
3
MoM

Price History for 643 Main Street

DatePriceEventSource
07/27/2026$1,399,000Listed For SaleMLS PIN #73555500
07/10/2001$50,000Sold
N/A

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Property Tax and Assessment

Year2025
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.
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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.
  • Arunajoejoe
    "There are great schools, parks, ocean & lake beaches, dog parks & a very cute village. We love living here! "
  • Sandie.reardon
    "Good open spaces and nice beaches on which to walk. People are friendly and helpful when you ask a question. "
  • Sbuchanon
    "Clean, friendly, organized local govt w great communication, lovely community, excellent services for seniors."
  • Arunajoejoe
    "It’s a beautiful area with lots of lakes, ponds and beaches. Two quaint villages and lots of friendly people."
  • Gij71
    "There is a main road and cars drive very fast on it not a good area to let young children outside unsupervised. I would suggest a fenced in yard. "
  • Caper
    "Dog owners would love taking the dogs to the public beach on Seymour Pond. Plus we see many dog owners walking their dogs on the bike path."
  • Lisab8896
    "Everyone knows one another’s dogs! However a neighbor ignores the leash law which is super annoying Also there are coyotes out and about."
  • Anthony D.
    "This is a cute summer town to visit. Lots of great restaurants and cute shops. The weather here esp in August is amazing "
  • Lilsweeti56
    "Good families. Mostly friendly. Nice beaches around and a few parks. Not a fan of Chatham but go once and awhile for restaurants there "
  • Danielle S.
    "All of the neighbors know each other and communicate often. There sometimes are parties or get togethers as well. It’s a super comfortable area."
  • Sydney R.
    "Many people bring their dogs on the bike trail and the park. Most of the dogs are kind, none of them really bite. "
  • Danielle S.
    "Long pond and bike path are super close! It’s a quiet area where most neighbors know each other. Pets and kids are out a lot."
  • Meghan
    "nice houses, pride of ownership shows from the road on most properties. safe and convenient to highway, restaurants & shopping. close to many beaches."
  • Raven B.
    "It is easy to get around in the winter, however when its summer time, forget about it. You are better off biking along the trails. "
  • Emily S.
    "Harwich is a low crime area, which is nice when you have children. Harwich also has a great school system. "
  • Michelleolson
    "Long Pond lake living, right next to bike trail, bikeable to Harwichport and Brewster. 100 minute drive to Boston"
  • Nancy P.
    "The town Fire chief lives down the street and it’s a good mix of summer and year round residents. Couple houses are neglected but hope that changes "
  • Parulia
    "It’s a beautiful and charming beach community with a share of year round residents. We love it. "
  • Raymond C.
    "One of the best area's to live in on the entire Cape, convenient to everything and great school system"

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.