Fort Constitution · Photo: AlexiusHoratius · CC BY-SA 3.021 homes sold in New Castle in the last year, at a typical $2.5M
Redfin reports New Castle’s sales by ZIP code, so these figures are for ZIP 03854, which takes in New Castle and the area around it. Almost every sale is a house. Below: what each kind of home sells for, what your budget buys, and a shortcut to every site where New Castle homes are listed.
Every place New Castle homes are listed, in one stop
We don’t copy listings: the agents’ sites have the photos and the latest price changes. Set what you want once and we open each site already filtered to New Castle.
For sale
Rent
New, land & open houses
Links open the listing sites; TownRatings isn’t paid for them and doesn’t rank one above another. Rentals and government-owned homes come from sources outside the MLS.
Houses are 94% of New Castle’s sales, at a typical $2.3M (year to May 2026)
21 homes sold in the year to September 2026.
typical sale · 23 sold in the year to May 2026
- Per square foot
- $897NH $283
- Days to sell
- 49
- Sold over asking
- 17%
Condos: 1 sold, typical $4.7M
Too few sales in 12 months for reliable figures.
More homes sell than most years, at 2.6 times the 2016 price
21 sales in the last year, against 25 in 2016 and a low of 9 in 2022. The typical sale went from $946K in 2016 to $2.5M.
Source: Redfin Data Center, MLS sales; for ZIP 03854, which takes in New Castle and the area around it (each month is a 3-month rolling window, its counts divided by 3). Typical price and $/sq ft are the monthly medians, weighted by sales. Redfin stopped publishing towns’ figures by property type after May 2026, so houses and condos are shown for the year to then.
What $2M buys in New Castle
Check a listing against what New Castle homes sold for
Against the town’s median price per square foot over the last 12 months. A rough check: condition, lot and location within town move a price more than this can see.
Owning the typical New Castle home costs about $13,838 a month
Price: New Castle’s typical sale, last 12 months. Property tax at New Castle’s 0.5% (median bill ÷ median value, Census ACS); insurance at 0.35% of price a year. Before PMI, HOA dues, upkeep and the tax deduction. Whether New Castle is affordable on local pay is on Cost of living.
Four things worth knowing
Property tax, a year
Of a home’s value: the median bill over the median home value. On a $2.5M home, about $12,280 a year.
Taxes vs. neighborsTypical commute
The average one-way trip to work for people who live in New Castle.
Work & commuteCheck the flood map
Flood insurance isn’t in a standard policy, and lenders require it in FEMA flood zones. Check the address before you make an offer.
Natural hazardsLook up any property
Assessed value, lot size and every past sale of a home you’re eyeing are public, at the town or county assessor and the registry of deeds.
Portsmouth, South Eliot, York Harbor, Kittery, Cape Neddick and Hampton sell for less a square foot
The busier markets within 25 miles of New Castle, by what sold. Prices, taxes and how far a paycheck goes next door are on Cost of living.
| Sold | Typical sale | $/sq ft | Over asking | Days to sell | |
|---|---|---|---|---|---|
| Portsmouth | 351 | $771K | $566 | 22% | 50 |
| Hampton | 159 | $600K | $404 | 39% | 40 |
| Cape Neddick | 94 | $726K | $494 | 15% | 59 |
| York Harbor | 68 | $915K | $430 | 42% | 154 |
| Kittery | 48 | $713K | $456 | 47% | 46 |
| South Eliot | 38 | $660K | $352 | 46% | 33 |
| New Castle (ZIP 03854) | 21 | $2.5M | $866 | 6% | 63 |
Redfin Data Center, October 2025 to September 2026. Towns with fewer than 20 sales are left out, and Redfin doesn’t report every town separately.
Post your home to New Castle, free
Selling it yourself, renting out an apartment or looking for a roommate? Post it to New Castle. People who follow the town see it, and so do people comparing New Castle with their own town. No commission, no listing fee.
Questions about buying a home in New Castle
What do homes sell for in New Castle, NH?
21 homes sold in the year to September 2026 at a typical $2.5M, $866 a square foot.
Is New Castle a buyer’s or seller’s market?
A seller’s market: 2 homes were for sale in September 2026 and 2 sold, about 1 months of supply. Buyers paid 97.6% of asking on average.
How much are property taxes in New Castle?
About 0.5% of a home’s value a year. On a $2.5M home that’s near $12,280.
Where can I see homes for sale in New Castle?
Zillow, Redfin, Realtor.com and Homes.com all carry New Castle’s MLS listings; the search links above open each one filtered to New Castle.
Sales, prices, days on market and listings: Redfin Data Center (MLS, monthly, not seasonally adjusted; for ZIP 03854, which takes in New Castle and the area around it (each month is a 3-month rolling window, its counts divided by 3)). Property tax rate: Census American Community Survey. Two-bedroom rent: HUD Fair Market Rent. Typical home value: Zillow Home Value Index. Schools grade: TownRatings (how grades work).