New Castle Real Estate

Welcome to New Castle, New Hampshire – a hidden gem nestled in Rockingham County that perfectly blends coastal charm with rich history. This quaint island community, situated just off the mainland, offers breathtaking views of the Atlantic Ocean and a serene lifestyle that is hard to resist.

New Castle is renowned for its stunning waterfront properties and picturesque landscapes. The town is home to Fort Constitution Historical Site, where visitors can explore the remnants of early American defense structures and enjoy panoramic views of the harbor. Nature enthusiasts will appreciate the abundance of outdoor activities, from kayaking and sailing to leisurely strolls along the scenic coastline.

With a population of just over 1,000 residents, New Castle exudes a tight-knit community feel. The town’s vibrant atmosphere is complemented by its charming local shops, delightful eateries, and welcoming parks. The annual events, such as the New Castle Summer Concert Series, foster a sense of camaraderie and celebrate the town’s unique culture.

Education is a priority in New Castle, with access to quality schools and a strong emphasis on community involvement. The town’s strategic location provides easy access to nearby cities like Portsmouth, offering additional shopping, dining, and entertainment options.

Whether you’re seeking a peaceful retreat or a place to raise a family, New Castle presents an idyllic setting. With its stunning natural beauty, rich history, and strong community spirit, this enchanting town invites you to discover the joys of coastal living in New Hampshire. Come and experience the magic of New Castle – your dream home awaits!

Newest Listings in New Castle

$3,845,000

4 Beds ⋅ 4 Baths

This rare gem of a Cape is tucked away at the end of a private cul-de-sac in desirable New Castle. A beautifully updated 4 bedroom, 3.5 bath Cape offers 4000sq.ft. of thoughtfully designed living space on a .47 acre lot, just moments from the beach and local amenities. Combining timeless New England charm with modern updates, this exceptional home is perfect for both everyday living and entertaining. This spacious layout features a welcoming foyer with high ceiling, oak hardwood floors throughout, a newly renovated open space living area and kitchen, a stunning stone wood-burning fireplace for a warm focal point in the main living area. Adjacent to all this is a West facing sunroom overlooking Lavengers Creek and peaceful birch trees. Upstairs boasts a stunning updated primary suite, complete with a fully renovated ensuite bath with modern finishes continuing onto 2 additional bedrooms, bath and laundry. The lower levels are complete with an office, oversized 2 car garage with an adjacent convenient mudroom with closets. Outdoor living shines with newly renovated upper and lower decks for enhanced water views and a private patio. The house is ideally located within walking distance to New Castle Beach, New Castle Commons, library, MHT our sweet K-5 school, as well as scenic island walking paths. All conveniently located just minutes away from Wentworth by the Sea Hotel and Wentworth by the Sea Country Club and Portsmouth. This home offers the best of coastal New Hampshire.

97 Abigale Ln, New Castle

Listing Courtesy of : Jason Saphire ---- www.HomeZu.com

$2,600,000

3 Beds ⋅ 4 Baths

Set within the coveted Wentworth by the Sea community, this exceptional residence offers a rare opportunity to own one of New Castle's most distinguished homes. Sited at the end of a quiet cul-de-sac and surrounded by meticulously maintained grounds, the property seamlessly blends privacy, sophistication, and the ease of resort-style coastal living. Spanning 3,189 sq. ft., this 3-bed, 3.5-bath home has been extensively improved and meticulously maintained, with substantial recent updates throughout. Elegant living spaces are complemented by custom millwork, rich hardwood flooring, and an effortless floor plan designed for both everyday living and entertaining. The thoughtfully appointed kitchen features granite surfaces, a Sub-Zero refrigerator, Bosch dishwasher, and quality finishes, blending function with timeless style. Designed to embrace its surroundings, the outdoor spaces are equally impressive. A composite deck overlooks beautifully landscaped grounds, creating the perfect setting for morning coffee, summer gatherings, or quiet evenings at home. Every detail reflects pride of ownership and a commitment to quality. The finished lower level expands the living experience with flexible space ideal for a media room, recreation area, fitness studio, or guest overflow, complete with surround sound wiring and abundant storage. Recent improvements including updated mechanical systems, new hardwood flooring, carpeting, cabinetry, appliances, gas fireplace, and whole house generator provide peace of mind for years to come. Life at Wentworth by the Sea extends well beyond the front door. Residents enjoy access to a private beach, heated pool, clubhouse, tennis and pickleball courts, and a lifestyle that is uniquely New Castle. Stroll to the Wentworth by the Sea Hotel & Spa, marina, waterfront dining, and the renowned Wentworth by the Sea Country Club, or enjoy a short drive to downtown Portsmouth's celebrated restaurants, boutiques, theaters, and cultural attractions.

56 Old Bay Rd, New Castle

Listing Courtesy of : Marissa Drew ---- The Gove Group Real Estate, LLC

$3,200,000

3 Beds ⋅ 3 Baths

Life in Ducks Head is about location. It's about becoming part of one of New Castle's most sought-after waterfront neighborhoods, where opportunities to own are few and far between. For many, simply finding a home in this community is an accomplishment. For even fewer, that home comes with tidal frontage, direct water access, and expansive views of the Piscataqua River. Start your day with coffee overlooking the water, launching a kayak or paddleboard from your backyard, and end the evening watching boats pass by as the sun sets over the river. Here, the water isn't just part of the view—it's part of everyday life. Whether you enjoy boating, paddleboarding, kayaking, or simply relaxing outdoors, this property offers a front-row seat to the best of New Hampshire Seacoast living. Ownership includes access to amenities from two of the most desirable communities on the New Hampshire Seacoast. Enjoy a pool, tennis courts, pickleball courts, beach access, gathering spaces, and beautifully maintained grounds. Nearby marinas, yacht clubs, golf courses, waterfront restaurants, boating opportunities, and the historic Wentworth by the Sea Hotel create a coastal lifestyle that feels more like a private resort than a neighborhood. Just down the road, New Castle Common offers a sandy beach, picnic areas, open green space, a playground, and seasonal boat storage. Add in the island's scenic shoreline, strong sense of community, low property taxes, and proximity to Portsmouth, and it's easy to understand why New Castle remains one of New Hampshire's most desirable places to call home. Inside, the home offers a sought-after first-floor primary suite, bright living spaces, garden and water views, and a finished walkout lower level with flexible space for guests, hobbies, recreation, fitness, media, or working from home. This is a rare opportunity to own a waterfront home in New Castle, New Hampshire, where location, lifestyle, recreation and long-term value come together.

38 Ducks Head Rd, New Castle

Listing Courtesy of : Sharon Parker ---- Tate & Foss Sotheby's International Rlty

$3,200,000

3 Beds ⋅ 3 Baths

38 Ducks Head Rd, New Castle

Listing Courtesy of : Sharon Parker ---- Tate & Foss Sotheby's International Rlty

$3,950,000

4 Beds ⋅ 4 Baths

Set amidst the natural beauty of New Castle, this is a rare offering that captures the essence of refined coastal living. Boasting beautiful views of Little Harbor’s back channel, and Sagamore Creek, this elegant 3+ bedroom, 3.5-bath condominium offers over 3,400 square feet of light-filled living space in a private setting surrounded by mature woodlands and abundant wildlife. Designed for both elegance and easy single-floor living, the home features a sought-after first-floor primary suite with newly finished walk-in shower and huge soaker tub, radiant flooring, elevator access, and expansive windows that fill the home with natural sunlight. The chef’s kitchen is appointed with granite countertops and Wolf appliances, while the large patio and deck spaces provide lots of opportunities to connect with the peaceful landscape and water views. There are two additional bedrooms and full bath located on the second floor, while the lower floor offers an additional bedroom space, full bath, and a sun room with incredible harbor views. Additional highlights include a climate controlled underground garage with several dedicated storage rooms, and very low New Castle property taxes. Available for the first time in over 20 years, this stately home offers a combination of privacy, outdoor space, luxury finishes, and captivating coastal scenery, not found in many homes on the Seacoast. Walk to the outdoor heated pool, tennis courts, and the Wentworth Hotel & Spa. The marina and golf course are located right next door! Contact agent for more information and to schedule your exclusive showing.

8 Campbells Ln, New Castle

Listing Courtesy of : Jason Goodrich ---- Coldwell Banker Realty - Portsmouth, NH Off: 603-334-1900

$4,999,999

4 Beds ⋅ 6 Baths

A rare offering in the coveted Marina Heights enclave of Wentworth by the Sea. This 4,200+ SF, 4-bedroom (+office), 6-bath residence features an expansive main level with 10-foot ceilings and floor-to-ceiling windows that frame breathtaking views of the Marina and the Atlantic Ocean, and maximize the southern exposure making the living spaces light and bright. A dramatic two-story foyer welcomes you into a sun-drenched living room, which seamlessly flows into a chef-friendly kitchen anchored by a long peninsula island for gathering. The kitchen is open to the family room that features a wood-burning fireplace. Step out onto the oversized deck—the ultimate vantage point for coastal entertaining. Functionality meets style with a dedicated mudroom and separate laundry room off the attached garage, and a large pantry off the kitchen. For intimate gatherings, the dining room has a cozy, tavern inspired feel with custom built-ins, and can easily accommodate many dinner guests. Widely considered the premier floor plan in the neighborhood, the main level offers *almost* one-floor living, with the luxurious primary suite just two steps up from the living areas. It includes direct deck access, a sprawling walk-in closet, and a spa-like bath with an oversized walk-in shower, soaking tub, and a water closet with a bidet. Upstairs provides three additional bedrooms (two en suite), plus an office, an additional 3/4 bathroom, and a cedar closet. The walk-out lower level features a 6-seat wet bar, billiards area and a climate-controlled wine cellar, a dedicated space potential for a home gym and potting shed, all while maintaining direct outdoor access and ocean views. The atatched 3-car garage and exclusive access to the association pool, tennis courts, beach, and marina will seal the deal. New Castle taxes are famously low. Very walkable, bike-friendly, just minutes from downtown Portsmouth, beaches, boating, restaurants and more. Residents are prioritized for marina boat slips.

75 Marina Heights Rd, New Castle

Listing Courtesy of : Jennifer Madden ---- Gibson Sotheby's International Realty

Start Your Search

The property listing data and information, or the Images, set forth herein were provided to MLS Property Information Network, Inc. from third party sources, including sellers, lessors, landlords and public records, and were compiled by MLS Property Information Network, Inc. The property listing data and information, and the Images, are for the personal, non commercial use of consumers having a good faith interest in purchasing, leasing or renting listed properties of the type displayed to them and may not be used for any purpose other than to identify prospective properties which such consumers may have a good faith interest in purchasing, leasing or renting. MLS Property Information Network, Inc. and its subscribers disclaim any and all representations and warranties as to the accuracy of the property listing data and information, or as to the accuracy of any of the Images, set forth herein.

board logo 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, noncommercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data last updated .

Listing data is derived in whole or in part from the Maine IDX and is for consumers' personal,noncommercial use only. Dimensions are approximate and not guaranteed. All data should be independently verified. © 2026 Maine Real Estate Information System, Inc. All Rights Reserved.

This information is provided exclusively for consumers' personal, non-commerical use and may not be used for any purpose other than to identify prospective properties consumers may be intrested in purchasing.

Your privacy on the Internet is important to us. This Privacy Statement is to inform you that we will not provide your personal information to any third parties except as required by law or expressly authorized by you. We do not sell, trade, barter, or share information obtained from use of this site with any other businesses or people. All information gathered from a visitor to this web site is used solely by this office and/or its affiliated licensee(s). For additional information, please contact this office.