433 Union St
Portsmouth, NH 03801
4 bd 2 ba 2,020 sqft Built 1880 Lot 4,792 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 | $632,400 | $595,000 | $1,227,400 | $14,127 |
| 2023 | $363,900 | $354,200 | $718,100 | $11,583 |
| 2022 | $358,800 | $354,200 | $713,000 | $10,838 |
| 2021 | $358,800 | $354,200 | $713,000 | $10,716 |
| 2020 | $358,800 | $354,200 | $713,000 | $10,481 |
| 2019 | $354,100 | $354,200 | $708,300 | $10,525 |
| 2018 | $316,800 | $322,000 | $638,800 | $10,119 |
| 2017 | $285,100 | $322,000 | $607,100 | $9,337 |
| 2016 | $236,200 | $244,600 | $480,800 | $8,193 |
| 2015 | $236,200 | $244,600 | $480,800 | $8,073 |
| 2014 | $229,100 | $215,000 | $444,100 | $8,038 |
| 2011 | $210,300 | $215,000 | $425,300 | $7,374 |
| 2007 | $214,900 | $157,300 | $372,200 | $6,082 |
Property facts
Year built
1880
Property type
single_family
Stories
3
Beds
4
Baths
2
Living area
2,020 sqft
Lot size
4,792 sqft
ZIP code
03801
City
Portsmouth
Street
Union St
Coordinates
43.06779, -70.76256
Comparable properties nearby
Frequently asked questions
When did 433 Union St last sell?
No public-record sale is on file for 433 Union St.
What is the current tax assessment for 433 Union St?
The most recent total assessment for 433 Union St (year 2025) is $1,227,400 with $14,127 in property tax.
When was 433 Union St built?
433 Union St was built in 1880.
How does 433 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 433 Union St?
433 Union St is a 4 bed, 2 bath, 2,020 sqft, 4,792 sqft lot single_family.
Is 433 Union St a flip candidate?
No — 433 Union St does not appear in our flips dataset.
Is 433 Union St a tax-appeal candidate?
No — 433 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