Data as of September 2026. Source: Realtor.com.
The NEW CASTLE, NH real estate market (03854) currently shows 2 active listings. Homes are averaging 97 days on the market before going under contract.
Inventory has tightened compared to last year, with 6 fewer active listings — creating more competition among buyers.
Homes are taking longer to sell, averaging 97 days on market compared to 24 days last year.
The median listing price has fallen 10.7% year-over-year, from $2,518,750 to $2,249,500.
Population: 904 · Density: 431.7/mi² · Median household income: $164,167
Typical home value: $1,486,630 · Homeownership: 92.1%
| Zip | City / State | Distance | Listings | Market Value | Median $ | Average $ |
|---|---|---|---|---|---|---|
| 03854 | New Castle, NH 03854 | 0.0 mi | 3 | $6,074,250 | $2,024,750 | $2,024,750 |
| 03904 | Kittery, ME 03904 | 3.1 mi | 20 | $30,371,660 | $959,225 | $1,518,583 |
| 03801 | Portsmouth, NH 03801 | 4.3 mi | 98 | $114,806,118 | $826,000 | $1,171,491 |
| 03903 | Eliot, ME 03903 | 6.6 mi | 8 | $11,260,536 | $1,308,000 | $1,407,567 |
| 03909 | York, ME 03909 | 7.3 mi | 46 | $74,724,102 | $970,000 | $1,624,437 |
| 03885 | Stratham, NH 03885 | 9.7 mi | 18 | $23,230,422 | $1,336,250 | $1,290,579 |
| 03824 | Durham, NH 03824 | 10.7 mi | 4 | $2,076,000 | $519,000 | $519,000 |
| 03857 | Newmarket, NH 03857 | 11.7 mi | 16 | $9,492,640 | $619,900 | $593,290 |
| 03908 | South Berwick, ME 03908 | 12.0 mi | 5 | $8,244,585 | $532,000 | $1,648,917 |
| 03856 | Newfields, NH 03856 | 12.6 mi | 6 | $6,524,700 | $1,199,925 | $1,087,450 |
| 03823 | Madbury, NH 03823 | 13.5 mi | 2 | $1,850,000 | $925,000 | $925,000 |
| 03874 | Seabrook, NH 03874 | 14.3 mi | 10 | $9,968,170 | $712,400 | $996,817 |
| 03833 | Exeter, NH 03833 | 15.0 mi | 78 | $79,054,404 | $824,975 | $1,013,518 |
As of September 2026, there are 2 active listings in NEW CASTLE, NH (zip code 03854), compared to 8 the prior year.
The median listing price in NEW CASTLE, NH 03854 is $2,249,500 as of September 2026, a 10.7% decrease from $2,518,750 the prior year.
Homes in NEW CASTLE, NH 03854 spend an average of 97 days on the market before going under contract, compared to 24 days the prior year.
Based on current inventory and days-on-market data as of September 2026, NEW CASTLE, NH 03854 is currently a Balanced Market. Inventory has tightened compared to last year, with 6 fewer active listings — creating more competition among buyers. Homes are taking longer to sell, averaging 97 days on market compared to 24 days last year.
With SELL123.com's maximum 3% commission, sellers in NEW CASTLE, NH 03854 save an estimated $44,990 compared to a typical 5% commission on the median listing price of $2,249,500. Our fee structure: 1% listing + 2% selling broker — no additional buyer or seller fees. Call (240) SELL-123 or email info@SELL123.com for a free consultation.