18 Mainmast CircleNew Castle, NH 03854MLS Number 5070418

  • Sale Price: $2,100,000
  • 1 Day Since Sale
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18 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 0385418 Mainmast Circle New Castle NH 03854
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  • 6Bedrooms
  • 0.25Acreage
  • 4Bathrooms
  • 1968Year Built

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Listed by Susan Spaulding of The Aland Realty Group

Listing Sold by Tate & Foss Sotheby's International Rlty
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 work and creative spaces. Enjoy peaceful, wooded surroundings just moments from the coast. Combining space, privacy, and New Castle's coveted low tax rate, this property offers an outstanding opportunity in one of New Hampshire's most sought-after communities.

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More Info

Parking

  • Parking Spaces
  • GarageNo

Building

  • Year Built1968
  • Building ConstructionCedar Exterior
  • ConstructionExisting
  • Property StyleContemporary, Multi-Level
  • Bedrooms6
  • Bathroom4
  • Total Baths4
  • 3/4 Baths1
  • Half Bath1
  • Total Rooms9
  • Square Feet3,730
  • APX Unfin Below Grade89
  • BasementBasement Stairs
  • FoundationConcrete

Exterior

  • Exterior Colornatural
  • RoofAsphalt Shingle

Legal

  • Tax ReductionYes
  • Zoningresidential
  • Surveyed Y/NYes

Rooms

  • Full Bath2

Location

  • Building Number18
  • StreetMainmast Circle
  • TownNew Castle
  • StateNH
  • Zip03854
  • CountyRockingham
  • DistrictPortsmouth
  • Elementary SchoolMaude H. Trefethen School
  • Junior HighRye Junior High School
  • High SchoolPortsmouth High School
  • Map9
  • Flood Zone Y/NNo
  • Address18 Mainmast Circle

Interior

  • Interior FeaturesWood Fireplace, Wood Stove Hook-up
  • FloorsHardwood, Tile
  • Stories3

Utilities

  • Heat SystemHot Air
  • WaterPublic
  • SewerPump Up
  • Electric200+ Amp Service
  • UtilitiesCable at Site

Basic Information

  • MLS Number5070418
  • MLS StatusClosed
  • Virtual TourView Tour
  • StatusSLD
  • Property TypeSingle Family
  • List Price$2,200,000
  • Listing Agent NameSusan Spaulding
  • Broker NameThe Aland Realty Group
  • Selling Agent NameMaggie Barrett Campbell
  • Sale Price$2,100,000

Property

  • Acreage0.25
  • Lot DescriptionWooded
  • AreaNH-Rockingham
  • Lot7
  • DrivewayGravel
  • RoadsPaved, Public
  • Road Frontage111

Amenities

  • PricePerSqFt563

Other

  • SeasonalNo
  • Page947
  • Date Listed11/21/2025
  • View Count2

Your Local Office

More Info »
Coldwell Banker Dinsmore Associates
Office: 603-898-9038
115 Indian Rock Road
Windham, NH 03087

New Castle, NH Demographics

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New Castle, NH Real Estate Market Data

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New Castle, NH Schools

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Copyright 2026 PrimeMLS, Inc. All rights reserved. This information is deemed reliable, but not guaranteed. The data relating to real estate displayed on this display comes in part from the IDX Program of PrimeMLS. The information being provided is for consumers’ personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data last updated May 14, 2026 3:54 PM EDT

 

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