Not in a Flood Zone! Mooring Possibility! Large waterfront lot .68 acres providing endless building expansion capabilities to suit your desires! 174' of waterfrontage with direct water access! High & Dry! Look to embrace the serenity of island living in quintessential New Castle! Sitting nicely perched on BOS'NS' Hill overlooking the Piscataqua River Back Channel/Little Harbor. Enjoy kayaking, paddleboarding, fishing, or cruising on your Whaler. The perfect blend of privacy, relaxation & entertainment where you can host to your heart’s content & unwind while observing herons play by the water's edge. The 1st level exudes a sense of spaciousness with an open floor layout, adorned with vaulted wood-beamed ceilings & HW flooring, oversized windows that frame captivating water views and bathe the interior in natural light! The chef’s kitchen boasts soapstone countertops, SS appliances, breakfast bar, butler’s pantry, coffee/wine bar & wine closet. The inviting LR has a fireplace & built-ins. The FR is surrounded w/oversized windows to lounge by the cozy heated gas stove. The 2nd level boasts 3 charming BRs & the MBR Suite offers ample privacy. Radiant heat & A/C. Heated garage. Super low Taxes! Top-Rated Elementary School! Enjoy the Wentworth by the Sea Hotel, Wentworth Country Club, and the Wentworth Marina. Nearby: downtown Portsmouth, Kittery, and Portsmouth International Airport. Time to make this special waterfront home your own!
Active
Listed by:
Jason Saphire,
www.HomeZu.com 877-249-5478
Price cut: $50K (7/9)
$2,900,000
91 Main Mast Circle, New Castle, NH 03854
4beds
2,621sqft
Est.:
Single Family Residence
Built in 1970
0.68 Acres Lot
$-- Zestimate®
$1,106/sqft
$-- HOA
What's special
Heated garageDirect water accessCozy heated gas stoveOpen floor layoutCharming brsHw flooringOversized windows
- 47 days
- on Zillow |
- 1,958 |
- 26 |
Zillow last checked: 7 hours ago
Listing updated: July 11, 2025 at 04:32pm
Listed by:
Jason Saphire,
www.HomeZu.com 877-249-5478
Source: PrimeMLS,MLS#: 5000363

Travel times
Tour with a buyer's agent
Tour with a buyer's agent
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 4
- Bathrooms: 3
- Full bathrooms: 2
- 1/2 bathrooms: 1
Heating
- Propane, Oil, Forced Air, Ceiling, Zoned, Radiant, Stove
Cooling
- Attic Fan, Central Air
Appliances
- Included: Gas Cooktop, Dishwasher, Dryer, Range Hood, Microwave, Mini Fridge, Double Oven, Wall Oven, Refrigerator, Washer, Gas Stove
- Laundry: Laundry Hook-ups, 1st Floor Laundry, 2nd Floor Laundry
Features
- Bar, Cathedral Ceiling(s), Ceiling Fan(s), Dining Area, Kitchen Island, Primary BR w/ BA, Natural Woodwork, Vaulted Ceiling(s), Walk-In Closet(s), Walk-in Pantry, Wet Bar
- Flooring: Bamboo, Hardwood, Laminate, Tile
- Windows: Blinds, Window Treatments, Screens, Storm Window(s)
- Basement: Crawl Space,Unfinished,Walk-Out Access
- Attic: Walk-up
- Number of fireplaces: 2
- Fireplace features: Gas, Wood Burning, 2 Fireplaces
Interior area
- Total structure area: 2,621
- Total interior livable area: 2,621 sqft
- Finished area above ground: 2,621
- Finished area below ground: 0
Property
Parking
- Total spaces: 1
- Parking features: Gravel, Driveway, Garage, Off Street, On Site, On Street
- Garage spaces: 1
- Has uncovered spaces: Yes
Features
- Levels: Two
- Stories: 2
- Exterior features: Boat Mooring, Shed
- Has view: Yes
- View description: Water
- Water view: Water
- Waterfront features: Waterfront, Island, Tidal
- Body of water: Piscataqua River
- Frontage length: Water frontage: 174
Lot
- Size: 0.68 Acres
- Features: Sloped, Views, Near Country Club, Near Golf Course, Neighborhood
Details
- Additional structures: Outbuilding
- Parcel number: NCASM00009B000022L000000
- Zoning description: RD RE
Construction
Type & style
- Home type: SingleFamily
- Architectural style: Colonial,Garrison
- Property subtype: Single Family Residence
Materials
- Wood Frame
- Foundation: Concrete
- Roof: Architectural Shingle
Condition
- New construction: No
- Year built: 1970
Utilities & green energy
- Electric: 200+ Amp Service
- Sewer: 1000 Gallon, Leach Field, On-Site Septic Exists
- Utilities for property: Phone, Cable Available, Propane
Community & HOA
Community
- Security: Smoke Detector(s)
- Subdivision: BOS' NS' HILL
HOA
- Amenities included: Boat Mooring
Location
- Region: New Castle
Financial & listing details
- Price per square foot: $1,106/sqft
- Tax assessed value: $2,090,000
- Annual tax amount: $10,408
- Date on market: 6/20/2025
- Exclusions: Interior Furniture and paintings
- Road surface type: Paved
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