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20 Main Street, Nantucket MA 02564

ActiveSconset1 FamilySingle Family Residence

$12,000,000

$1,903 / sqft

Bedrooms

Bathrooms

Sq Ft

6,305

Lot

0.66 acres

Year Built

1827

Days on Market

Description

At the heart of historic ’Sconset, where location is everything and legacy is rarely offered, Green Chimneys stands apart as one of Nantucket’s most iconic and enduring estates. Location, legacy, and rarity converge at this extraordinary Main Street property, prominently positioned in the heart of the village just moments from the beach, market, and village center. Offering a rare combination of history, scale, and exceptional in-town grounds, Green Chimneys unites more than two centuries of provenance with beautifully scaled living and entertaining spaces, all enhanced by coveted HDC-approved plans for a pool. A landmark offering of uncommon character and distinction, Green Chimneys stands among the island’s rarest and most compelling ownership opportunities.

Property Details

MLS #93060

StatusActive

Property Type1 Family

Sub TypeSingle Family Residence

NeighborhoodSconset

MLS AreaSconset

CityNantucket

StateMA

Zip02564

List Price$12,000,000

Price / Sq Ft$1,903

Bedrooms8

Full Baths9

Half Baths0

Total Rooms18

Living Area6,305 sqft

Lot Size0.66 acres

Year Built1827

Days on Market1

ZoningSR10

FurnishedFurnished

Fireplaces9

PoolNo

GarageNo

SewerTwn

Water SourceTown

Second DwellingP/Sd

OwnerBoulevard Property LLC

Parcel #50

Tax Map #73.3.1

Annual Tax$18,576

Assessed Value$3,523,700

Tax Year2023

On Market DateMay 2, 2026

First ListedMay 4, 2026

Last UpdatedMay 4, 2026

Latitude41.2621147

Longitude-69.9643732

Heating

OFHW

Parking

2 Drives -access w/parking both from Main Street & the other at McKinley - in addition to separate attached garage

Exterior

DeckGardenPatioPorch

View

NoneD/Oc

Utilities

Cbl

Flooring

Antique Pine - authentic original large plank -

Appliances

Stove: YesWasher: Yes

Interior Features

A,Irr,OSh

Foundation

Various main house - carriage house & barn (cementconcrete stone & wood)

Basement

2 Separate Basement Areas in Main House Original and at opposite end of extension Backyard area

Lot Features

*Noted on DeedExpansive - Outstanding Grounds/Center Courtyard Area

Additional MLS Details

SewerTwn

ZoningSR10

Tax Year2023

Basement2 Separate Basement Areas in Main House Original and at opposite end of extension Backyard area

FlooringAntique Pine - authentic original large plank -

Garage YNfalse

LINK Psf1903.2513

FurnishedFurnished

Owner NameBoulevard Property LLC

AppliancesStove: Yes, Washer: Yes

Rooms Total18

Lot Features*Noted on Deed, Expansive - Outstanding Grounds/Center Courtyard Area

Water SourceTown

On Market Date2026-05-02

Parcel Number50

Tax Map Number73.3.1

Pool Private YNfalse

Tax Annual Amount18576

Interior FeaturesA,Irr,OSh

Tax Assessed Value3523700

Fireplace Features9

Foundation DetailsVarious main house - carriage house & barn (cement, concrete stone & wood)

Original List Price12000000

LINK Listing Dwell2P/Sd

Listing Agent

Marybeth Gilmartin

Compass MA LLC

Price History

Date	Event	Price	Change
May 4, 2026	Listed	$12,000,000

Sales History

Date	Sale Price	List Price	Buyer	MLS #
May 31, 2012	$4,090,000	$4,695,000	Boulevard Property Group LLC	74988

Tax History

Year	Tax Amount	Assessed Value	Land	Improvements
2023	$18,576	$3,523,700	—	—

Market Context

Sconset Avg

$7,047,727

Sconset Median

$4,300,000

Island Avg

$6,064,676

Island Median

$4,299,000

Property Context

Wetlands NearbyNo

Source: MassGIS / FEMA NFHL. For informational purposes only — verify with Town of Nantucket.

MLS Listing #93060 — Data as of 2026-05-04