18 Mainmast Circle, New Castle, NH 03854
- Beds
- 6
- Baths
- 4
- Sqft
- 3,819
View property features, location on map, relevant school information and overview from seller's agent.
- 0
- 0
Overview
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.
Location
Full feature list
Basic info
- Property type
- House
- Number of stories
- 3
- Number of bedrooms
- 6
- Number of bathrooms
- 4
- Square feet
- 3,819
- Lot size (acres)
- 0.25
- Year built
- 1968
Interior features
- Basement
- Yes
Utilities
- Heating
- Forced air
- Cooling
- None
- Water
- Public
Public schools
Disclaimer: Certain information displayed on this listing has been derived from parties other than Final Offer, LLC. Information provided and their sources have been deemed reliable, but accuracy of information is not guaranteed and therefore should be independently verified.
Sourced from: PrimeMLS MLS®#: 5070418 Last checked: …

Copyright 2026 PrimeMLS. All rights reserved. This information is deemed reliable, but not guaranteed. The data relating to real estate displayed on this web site 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.