About 18 Mainmast Circle
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.
Features of 18 Mainmast Circle
| MLS® # | 5070418 |
|---|---|
| Price | $2,400,000 |
| Bedrooms | 6 |
| Bathrooms | 4.00 |
| Full Baths | 2 |
| Half Baths | 1 |
| Square Footage | 3,730 |
| Acres | 0.25 |
| Year Built | 1974 |
| Type | Residential |
| Sub-Type | Residential |
| Status | Active |
Community Information
| Address | 18 Mainmast Circle |
|---|---|
| Area | New Castle |
| City | New Castle |
| County | Rockingham |
| State | NH |
| Zip Code | 03854 |
Amenities
| Utilities | Cable at Site |
|---|---|
| Is Waterfront | No |
| Has Pool | No |
Interior
| Interior | Hardwood, Tile |
|---|---|
| Appliances | Gas Cooktop, Dishwasher, Double Oven, Refrigerator |
| Heating | Hot Air |
| Cooling | None |
| Fireplace | No |
| # of Stories | 3 |
Exterior
| Roof | Asphalt Shingle |
|---|
School Information
| District | Portsmouth |
|---|---|
| Elementary | Maude H. Trefethen School |
| Middle | Rye Junior High School |
| High | Portsmouth High School |
Additional Information
| Date Listed | November 21st, 2025 |
|---|---|
| Days on Market | 45 |
| Zoning | residential |
Listing Details
| Agent | Susan Spaulding |
|---|---|
| Office | The Aland Realty Group |