Active

370 Days on market

4390 Main Barnstable — Photo 1 of 36

Recent Drop: $1,500,000

$5,000,000

$3,500,000

4390 Main, Barnstable, MA 02637

Barnstable, MA 02637 — Cummaquid

Beds

Baths

SqFt

5,442

Style

Single Family

Built

1994

WATERFRONT ESTATE – This rare Cape Cod retreat blends classic coastal architecture with modern refinement. Refreshed with new siding and a Red Cedar roof (August 2025), the home offers 5 bedrooms and 5 baths, a chef’s kitchen with Viking professional gas range, Sub-Zero refrigerator, and center island with prep sink flows seamlessly into the sun-filled living room, dining area, and waterfront sunroom. The main residence includes a 2-car garage and full basement, while a versatile guest house with its own 2-car garage and striking fieldstone fireplace invites endless possibilities as a one or two-bedroom retreat, artist’s studio, game room, or workshop. Set on 3.8 private acres, the estate features a heated in-ground pool, landscaped grounds, and direct access to tidal waters. More than a residence, it is a private Cape Cod sanctuary offering beauty, privacy, and an unparalleled coastal lifestyle. 2-Year Choice ULTIMATE Home Warranty included. Some photos virtually staged.

Market Value Analysis

This Property

Size (SqFt) →Price →

This Property$643/sqft

Local Avg (Barnstable)$585/sqft

10% AboveMarket Average

* Analysis is based on 24 actively listed and recently sold comparable properties strictly within Barnstable, MA.

Financials

Original Price$5,000,000

Annual Taxes$27,742

Parking

Garage4

Off-Street12

Interior Specifications

Total Rooms10

Fireplaces2

FlooringTile, Carpet, Hardwood, Other, Flooring - Wall to Wall Carpet

BasementFull, Crawl Space, Garage Access, Sump Pump, Concrete, Unfinished

Climate & Utilities

HeatingForced Air, Natural Gas

CoolingCentral Air

WaterPublic

SewerPrivate Sewer

Building & Exterior

ConstructionConventional (2x4-2x6), See Remarks

RoofWood

FoundationConcrete Perimeter

Zoning101-Reside

Property & Lot

Acres3.81

SqFt Lot165,963

Lot FeaturesGentle Sloping, Other

Amenities & Appliances

Gas Water Heater • Range • Dishwasher • Disposal • Refrigerator • Washer • Dryer • Vacuum System • Range Hood

Neighborhood

Pool

Geography

Floorplan Breakdown

Structural Layout

Third

Bathroom 3

Second

Lvl Second

17 x 18.5

Bathroom - Full, Bathroom - Double Vanity/Sink, Skylight, Walk-In Closet(s), Flooring - Stone/Ceramic Tile, Double Vanity, Recessed Lighting

Lvl Third

Was $5,000,000

Sep 21, 2025

MLS® 73426596

Listed

$5,000,000

Sep 5, 2025

MLS® 73426596

Population

227

U.S. Census Bureau, ACS 2024 5-Year Estimates (B01003)

Median Household Income

$218K

U.S. Census Bureau, ACS 2023 5-Year Estimates (B19013)

Renter-Occupied Homes

0.0%

U.S. Census Bureau, ACS 2024 5-Year Estimates (B25003)

New Construction Permits — Barnstable County

513 housing units permitted in the last 12 months (-50% vs the prior 12 months) — 128 in 5+ unit buildings

U.S. Census Bureau, Building Permits Survey (through Jun '26)

ADU Potential

Massachusetts allows one accessory dwelling unit by right in single-family zoning districts statewide (M.G.L. c. 40A §3; 760 CMR 71.00, effective Feb 2025). Estimated maximum ADU size for this property: 900 sq ft (the lesser of 900 sq ft or half the 5,442 sq ft principal dwelling). Lot size: 165,963 sq ft.

Based on listing data, which indicates the property type — not the zoning district. Local dimensional, septic (Title 5), and historic-district requirements still apply. Not legal advice — verify with the municipality.

Full Barnstable, MA market report ZIP 02637 market data

Listing Provided By

Listing Agent: Robert Mackinnon

Listing Office: eXp Realty LLC

MLS® Number: 73426596