15 Thornton St
Portsmouth, NH 03801
3 bd 2 ba 1,638 sqft Built 1892 Lot 7,841 sqft single_family
No recorded sales
Location
Timeline: Sale, Listing & Tax History
Recorded events
No recorded events
No sale or listing events are on file for this property.
Tax assessment history
| Year | Building | Land | Total assessed | Tax paid |
|---|---|---|---|---|
| 2025 | $732,300 | $391,700 | $1,124,000 | $12,937 |
| 2023 | $414,200 | $269,100 | $683,300 | $11,022 |
| 2022 | $414,200 | $269,100 | $683,300 | $10,386 |
| 2021 | $414,200 | $269,100 | $683,300 | $10,270 |
| 2020 | $351,800 | $269,100 | $620,900 | $9,127 |
| 2019 | $313,900 | $269,100 | $583,000 | $8,663 |
| 2018 | $298,100 | $257,100 | $555,200 | $8,794 |
| 2017 | $298,100 | $257,100 | $555,200 | $8,539 |
| 2016 | $266,800 | $212,200 | $479,000 | $8,162 |
| 2015 | $266,800 | $212,200 | $479,000 | $8,042 |
| 2014 | $239,300 | $168,500 | $407,800 | $7,381 |
| 2011 | $239,500 | $168,500 | $408,000 | $7,074 |
| 2007 | $209,200 | $138,800 | $348,000 | $5,686 |
Property facts
Year built
1892
Property type
single_family
Stories
2
Beds
3
Baths
2
Living area
1,638 sqft
Lot size
7,841 sqft
ZIP code
03801
City
Portsmouth
Street
Thornton St
Coordinates
43.07736, -70.77218
Comparable properties nearby
Frequently asked questions
When did 15 Thornton St last sell?
No public-record sale is on file for 15 Thornton St.
What is the current tax assessment for 15 Thornton St?
The most recent total assessment for 15 Thornton St (year 2025) is $1,124,000 with $12,937 in property tax.
When was 15 Thornton St built?
15 Thornton St was built in 1892.
How does 15 Thornton St compare to others on Thornton St?
We track 8 other properties on Thornton St. Browse the list under "Other properties on Thornton St" to compare beds, baths, and sale history.
What are the property facts for 15 Thornton St?
15 Thornton St is a 3 bed, 2 bath, 1,638 sqft, 7,841 sqft lot single_family.
Is 15 Thornton St a flip candidate?
No — 15 Thornton St does not appear in our flips dataset.
Is 15 Thornton St a tax-appeal candidate?
No — 15 Thornton St is not currently flagged as a tax-appeal candidate.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
+0.5%
Implied 1-yr
+2.1%
2026 Q3
$1.3M
2026 Q4
$1.31M
ZIP 03801 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Thornton St