Date
Details
Price
Change
Source
6/25/2026
Listed
$1,599,000
—
MLS
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.
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Property Description
Timeless New England architecture meets sophisticated modern design in this beautifully restored antique Little Harbor residence on highly sought-after New Castle Avenue in Portsmouth. Completely renovated from top to bottom, this exceptional 3-bedroom, 2.5-bath home offers thoughtfully designed living space with premium finishes throughout. The heart of the home is a stunning custom kitchen featuring beautiful cabinetry, quartz countertops and island with plenty of guest seating, and stainless appliances to include the induction range. The main level offers a welcoming front foyer with antique hall tree, an inviting living room complete with gas fireplace, a spacious dining room, and the sun filled family room overlooking the well landscaped backyard as well as a separate laundry room and guest bathroom. Upstairs offers the main bedroom with its own private bathroom with custom tiled shower, 2 additional guest bedrooms and a fully renovated guest bathroom complete with custom tub and shower and double sinks. Every major system has been upgraded, providing peace of mind for years to come, including all-new electrical, plumbing, HVAC, and a new roof. Outside, enjoy the well landscaped backyard with a brick patio area perfect for relaxing or entertaining family and friends. Ideally located just minutes from downtown Portsmouth's vibrant restaurants, boutiques, waterfront, and cultural attractions, this turnkey property offers the rare opportunity to own a fully renovated antique home in one of the Seacoast's most desirable locations. Historic charm, exceptional craftsmanship, and modern luxury come together in this truly special offering. Open House Saturday June 27 from 10am-1pm.
Full Property Details
Full Property Details for 112 New Castle Ave
General
- Price: $1,599,000
- Taxes: $14,996 (2025)
- Status: Active
- Type: Single Family
- Source: PrimeMLS
- MLS ID: 5096632
- Updated: Today (6/25/2026)
- Added to Site: Today
Interior
- Number of Rooms: 7
- Interior Features: Gas Fireplace, Kitchen Island, Skylight, 1st Floor Laundry
- Fireplace: Yes
- Appliances: Dishwasher, Dryer, Microwave, Electric Range, Refrigerator, Washer, Induction Cooktop
- Flooring: Tile, Wood
Rooms
Bathrooms
- Total Bathrooms: 3
- Full Bathrooms: 1
- 3/4 Bathrooms: 1
- Half Bathrooms: 1
- Bathroom 1: Bathroom Full, Level 2
- Bathroom 2: Bathroom Half, Level 1
Bedrooms
- Total Bedrooms: 3
- Primary Suite: 10.5 x 12, Level 2
- Bedroom 1: 9 x 12, Level 2
- Bedroom 2: 10 x 14.5, Level 2
Other Rooms
- Living Room: 13 x 20, Level 1
- Kitchen: Kitchen, 12 x 13, Level 1
- Dining Room: Dining Room, 12 x 15, Level 1
- Sun Room/Solarium: 12 x 16, Level 1
- Laundry: Level 1
Additional Information
- Equipment: Irrigation System
Exterior
- Exterior Features: Garden Space, Patio
Parking
- Parking: Driveway, Paved
Location
- County: Rockingham
- Driving Directions: GPS works!
School Information
- School District: Portsmouth
- Elementary School: Little Harbor School
- Middle School: Portsmouth Middle School
- High School: Portsmouth High School
Heating & Cooling
- Cooling Type: Mini Split
- Heating Type: Electric, Heat Pump, Mini Split
Utilities
- Sewer: Public
Structural Information
- Construction Status: Existing
- Basement Entrance: Interior
- Basement Desc.: Bulkhead, Unfinished, Basement Stairs
- Roof: Architectural Shingle
- Stories/Levels: 2
- Square Feet: 1,659
- Finished Total: 1,659 Sq. Ft.
- Finished Above Grnd: 1,659 Sq. Ft.
- Year Built: 1860
Lot Features
- Lot Size (Acres): 0.13
- Lot Size (Sq. Ft.): 5,663
- Frontage: TBD
- Driveway/Sidewalk: Paved
- Zoning: SRB
Financial Considerations
- Price Per Sq. Ft.: $963.83
- Assessment Year: 2025
- Assessment Amount: $1,302,900
- Tax Amount: $14,996
- Tax Year: 2025
Disclosures and Reports
- Lot Number: 28
Listed by Great Island Realty LLC, Sue Salehkhou
We Value Your Privacy
We Value Your Privacy
We Value Your Privacy
Listed by Great Island Realty LLC, Sue Salehkhou
Listing agent
— 112 New Castle Ave —
Sue Salehkhou
Great Island Realty LLC
NMLS#: 1598647Get Pre-Approved Today
Schools
Schools serving 112 New Castle Ave
School District:Portsmouth School District, Portsmouth, NH
| Name | Grades | Distance |
|---|---|---|
Little Harbour School 50 Clough Drive, Portsmouth, NH 03801 | K-5 | 0.2 mi |
Disclaimer:
School attendance boundaries provided by ATTOM Data Solutions and are for reference only. Contact the school directly to verify enrollment eligibility.
Price & Sales History for 112 New Castle Ave
Tax History
Tax History for 112 New Castle Ave
Year
Property Taxes
Change
Tax Assessment
Change
2025
$14,996
3%
$1,302,900
—
2024
$14,566
23%
$1,302,900
78%
2023
$11,822
6%
$732,900
—
2022
$11,140
1%
$732,900
—
2021
$11,015
2%
$732,900
—
2020
$10,774
-1%
$732,900
—
2019
$10,891
17%
$732,900
25%
2018
$9,300
3%
$587,100
—
2017
$9,030
—
$587,100
—
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.
Estimate the Cost
Estimate the Cost for 112 New Castle Ave
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112 New Castle Avenue, Portsmouth, NH 03801 (MLS# 5096632) is a Single Family property with 3 bedrooms, 1 full bathroom and 2 partial bathrooms. 112 New Castle Avenue is currently listed for $1,599,000 and was received on June 25, 2026. Want to learn more about 112 New Castle Avenue? Do you have questions about finding other Single Family real estate for sale in Portsmouth? You can browse all Portsmouth real estate or contact a Coldwell Banker agent to request more information.