New Castle Island, NH homes for sale & real estate

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NEW 12 HRS AGO3D WALKTHROUGH

ABOUT THIS HOME
New Castle Island, NH Homes for Sale
Set along the shore of Lavenger Creek, this meticulous coastal residence reflects thoughtful architecture, refined craftsmanship, and natural beauty. Its distinctive modern design captures abundant natural light, water views, and a seamless connection to its setting. Walls of windows frame ever-changing vistas, while 10- to 12-ft ceilings and sliding glass doors enhance a sense of openness throughout. An elevator services all 3 levels—from the immaculate garage to upper-level bedrooms—and an automatic standby generator provides peace of mind. The kitchen and dining area naturally unite daily living and entertaining, with breakfast-bar seating, high-end appliances, multiple sinks

$3,100,000

4 beds4 baths3,057 sq ft

17 Lavenger Ln, New Castle, NH 03854

Water views • High-end appliances • 0.26 acre lot

ABOUT THIS HOME
New Castle Island, NH Homes for Sale
Experience exceptional living in this rare 6-bedroom, 4-bath home set on a beautifully wooded and private lot in desirable New Castle, NH. Designed for both everyday comfort and impressive entertaining. This home features an open-concept kitchen and living area with soaring cathedral ceilings that create a sense of light and spaciousness. The chef’s kitchen is equipped with top-of-the-line appliances and an spacial flow into the main living space. A stunning stone fireplace anchors the room, offering warmth and architectural impact. With its unusually generous square footage for New Castle, this home provides remarkable flexibility—ideal for living, hosting guests, and dedicated

$2,400,000

6 beds3.5 baths3,730 sq ft

18 Mainmast Cir, New Castle, NH 03854

Wooded surroundings • Private lot • Open-concept kitchen

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Average home prices near New Castle Island, NH

Cities

Neighborhoods

North End homes for sale
$789,000
Bartlett Road District homes for sale
$1,190,000
Portsmouth Downtown homes for sale
$1,625,000
South End homes for sale
$1,100,000
Christian Shore homes for sale
$1,350,000
Downtown Kittery District homes for sale
$1,280,000
West End homes for sale
$999,900

New Castle Island, NH real estate trends

$3M

Sale price

$871

Sale $/sq ft

Over list price

Days on market

Down payment

—

Total homes sold

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Copyright 2026 PrimeMLS All rights reserved. This information is deemed reliable, but not guaranteed. The data relating to real estate for sale on this website comes in part from the VOW Program of PrimeMLS. Data last updated Fri Jan 02 2026 on the search page

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