THE KALMAN Co.
ListingsKnow NantucketAbout
Contact Sean
← All listings
MLS #93060
Sconset · Active · Listed May 2, 2026

20 Main Street

$12,000,000
20 Main Street, Nantucket — photo 1 20 Main Street, Nantucket — photo 2 20 Main Street, Nantucket — photo 3 20 Main Street, Nantucket — photo 4 20 Main Street, Nantucket — photo 5 20 Main Street, Nantucket — photo 6 20 Main Street, Nantucket — photo 7 20 Main Street, Nantucket — photo 8 20 Main Street, Nantucket — photo 9 20 Main Street, Nantucket — photo 10 20 Main Street, Nantucket — photo 11 20 Main Street, Nantucket — photo 12 20 Main Street, Nantucket — photo 13 20 Main Street, Nantucket — photo 14 20 Main Street, Nantucket — photo 15 20 Main Street, Nantucket — photo 16 20 Main Street, Nantucket — photo 17 20 Main Street, Nantucket — photo 18 20 Main Street, Nantucket — photo 19 20 Main Street, Nantucket — photo 20 20 Main Street, Nantucket — photo 21 20 Main Street, Nantucket — photo 22 20 Main Street, Nantucket — photo 23 20 Main Street, Nantucket — photo 24 20 Main Street, Nantucket — photo 25 20 Main Street, Nantucket — photo 26 20 Main Street, Nantucket — photo 27 20 Main Street, Nantucket — photo 28 20 Main Street, Nantucket — photo 29 20 Main Street, Nantucket — photo 30 20 Main Street, Nantucket — photo 31 20 Main Street, Nantucket — photo 32 20 Main Street, Nantucket — photo 33
33 photos · select any photo to open it full screen
8Bedrooms
9Baths
6,305Square feet
0.66Acres · 28,749 sq ft
1827Built · renovated 2014
$1,903Per square foot
The home

Eight bedrooms, renovated in 2014.

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.

Details

Everything on the record.

StatusActive
ListedMay 2, 2026
Days on market155
MLS #93060

The house

TypeSingle Family Residence
Rooms18
Bedrooms8
Bathrooms9 full
Living area6,305 sq ft
Year built1827
Renovated2014
FurnishedFurnished
Fireplace9
FlooringAntique Pine - authentic original large plank -
DwellingsPrimary dwelling, secondary allowed

Systems and exterior

HeatingOil, forced hot water
AmenitiesA, Irrigation, Outdoor shower
Basement2 Separate Basement Areas in Main House Original and at opposite end of extension Backyard area
FoundationVarious main house - carriage house & barn (cement; concrete stone & wood)
ExteriorDeck, Garden, Patio, Porch, P/Pool, Community tennis
Parking2 Drives -access w/parking both from Main Street & the other at McKinley - in addition to separate attached garage
GarageNo
Private poolNo
ViewD/Oc

Land, taxes and fees

Lot0.66 acres (28,749 sq ft)
Lot features*Noted on Deed; Expansive - Outstanding Grounds/Center Courtyard Area
ZoningSR10
SewerTown
WaterTown
UtilitiesCable
Assessed value$4,589,600
Annual tax$18,576 · tax year 2026

Want the honest read on this one?

Sean walks these streets. Call or text for the story behind the listing — value, history, and what the photos don't show.

Location

Sconset, on the map.

Full island map →

Listing courtesy of Compass MA LLC · Marybeth Gilmartin. Data from LINK (Listing Information Network, Inc.) as of October 9, 2026. Information believed correct but not guaranteed; buyers should verify all details independently.

Explore
HomeListingsOpen HousesNeighborhood Guides
Insights
Know NantucketTalking NantucketMarket Report
Guides
Buying GuideSelling GuideHome ValuationAll Island Guides
Company
About & TeamContact
THE KALMAN Co.
InstagramFacebookLinkedIn
Nantucket, MA 02554 · 508-228-4578 · sean@thekalmanco.com · Brokered by eXp Realty
© 2026 The Kalman Co. · Equal Housing Opportunity