443 Union St
Portsmouth, NH 03801
3 bd 3 ba 2,988 sqft Built 1889 Lot 6,098 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 | $787,500 | $614,400 | $1,401,900 | $16,136 |
| 2023 | $445,000 | $365,700 | $810,700 | $13,077 |
| 2022 | $445,000 | $365,700 | $810,700 | $12,323 |
| 2021 | $445,000 | $365,700 | $810,700 | $12,185 |
| 2020 | $445,000 | $365,700 | $810,700 | $11,917 |
| 2019 | $445,000 | $365,700 | $810,700 | $12,047 |
| 2018 | $396,500 | $332,400 | $728,900 | $11,546 |
| 2017 | $399,700 | $332,400 | $732,100 | $11,260 |
| 2016 | $354,600 | $259,200 | $613,800 | $10,459 |
| 2015 | $354,600 | $259,200 | $613,800 | $10,306 |
| 2014 | $368,700 | $224,600 | $593,300 | $10,739 |
| 2011 | $342,700 | $224,600 | $567,300 | $9,836 |
| 2007 | $355,100 | $165,600 | $520,700 | $8,508 |
Property facts
Year built
1889
Property type
single_family
Stories
2
Beds
3
Baths
3
Living area
2,988 sqft
Lot size
6,098 sqft
ZIP code
03801
City
Portsmouth
Street
Union St
Coordinates
43.06764, -70.76249
Comparable properties nearby
Frequently asked questions
When did 443 Union St last sell?
No public-record sale is on file for 443 Union St.
What is the current tax assessment for 443 Union St?
The most recent total assessment for 443 Union St (year 2025) is $1,401,900 with $16,136 in property tax.
When was 443 Union St built?
443 Union St was built in 1889.
How does 443 Union St compare to others on Union St?
We track 8 other properties on Union St. Browse the list under "Other properties on Union St" to compare beds, baths, and sale history.
What are the property facts for 443 Union St?
443 Union St is a 3 bed, 3 bath, 2,988 sqft, 6,098 sqft lot single_family.
Is 443 Union St a flip candidate?
No — 443 Union St does not appear in our flips dataset.
Is 443 Union St a tax-appeal candidate?
No — 443 Union 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 Union St