Map location of 18 Mainmast Circle, New Castle, NH 03854
$2,400,000
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18 Mainmast Circle, New Castle, NH 03854

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6 Beds
4 Baths
3,730 Sq Ft
Listing by: Susan Spaulding - The Aland Realty Group
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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 chefs 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 flexibilityideal for living, hosting guests, and dedicated work and creative spaces. Enjoy peaceful, wooded surroundings just moments from the coast. Combining space, privacy, and New Castles coveted low tax rate, this property offers an outstanding opportunity in one of New Hampshires most sought-after communities.

  • MLS# 5070418
  • Date Listed11/21/2025
  • Days on Realty 3 Days
  • Bedrooms 6
  • Bathrooms 2 Full baths, 1 Half baths, 1 Three Quarter baths
  • Lot Size 0.25 acres (10,890 sq. ft)
  • Property Type Single Family
  • County NH-Rockingham
  • Year Built 1974
  • Water Public
  • Square Feet 3,730 sq. ft
  • Price Per Sq. Ft $643.43

Interior Features

  • Appliances Dishwasher, Refrigerator
  • Flooring Hardwood, Tile
  • Heating Baseboard

Exterior / Lot Features

  • Roof Shingle
  • Lot Size Acres 0.25
  • Lot Size SQFT 10,890.00
  • Lot Features Wooded

Directions

Turn onto Walton Road off 1B in New Castle, continue until road curves to the right, house is second on right on Mainmast Circle,

Financial Considerations

Nearby Schools

Source: School Digger

Peep School Pre School Program

Public • PK - PK • Serves this home

4.44 mi

Distance

Portsmouth Middle School

Public • 6 - 8 • Serves this home

2.84 mi

Distance

Portsmouth High School

Public • 9 - 12 • Serves this home

3.61 mi

Distance

Sales & Tax History

Source: Public Records

Population & Environment

Source: Sperling's Best Places

Walkability in NH / 03854

Source: Walkscore

30/100

Car-Dependent

Walk Score ®

45/100

Bikable

Bike Score ®

Overview

Most errands require a car. It is possible to get on a bus. Minimal bike infrastructure.

Walkability averages in the surrounding area

The average walkability score in the surrounding area is Walk Score: 15/100, Transit Score: 0/100, Bike Score: 37/100.

Points of Interest near 18 Mainmast Circle, New Castle, NH 03854

Frequently Asked Questions for 18 Mainmast Circle

Source: Realty.com

18 Mainmast Circle, New Castle, NH 03854 is a Single Family 3,730 sq. ft. home listed for sale. Realty.com has 0 photos available of this 6 bed, 4 bath house, listed at $2,400,000. View sales and tax history, use our mortgage calculator and more on Realty.com

Our records indicate that 18 Mainmast Circle was built in 1974.

The full address for this home is 18 Mainmast Circle, New Castle, NH 03854.

18 Mainmast Circle has been listed on Realty.com since Fri November 21, 2025

Most errands require a car. It is possible to get on a bus. Minimal bike infrastructure.

The average walkability score in the surrounding area is Walk Score: 15/100, Transit Score: 0/100, Bike Score: 37/100.

There are 3 schools assigned to this home. Check out the schools near 18 Mainmast Circle. Peep School Pre School Program (Grades: PK - PK), Portsmouth Middle School (Grades: 6 - 8), Portsmouth High School (Grades: 9 - 12)

Listing provided courtesy of: The Aland Realty Group (tel: 603-501-0463)
Listing agent: Susan Spaulding (tel: 603-501-0463) (#610543)

This content last refreshed on 2025-11-24 11:26:38. Some properties which appear for sale on this web site may subsequently have sold or may no longer be available.

Export listing data of 18 Mainmast Circle, New Castle, NH 03854 : MLS# 5070418

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