603 Dennett St
Portsmouth, NH 03801
5 bd 3 ba 2,598 sqft Built 1940 Lot 12,632 sqft multi_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 | $369,900 | $406,500 | $776,400 | $8,936 |
| 2023 | $261,300 | $279,300 | $540,600 | $8,720 |
| 2022 | $261,300 | $279,300 | $540,600 | $8,217 |
| 2021 | $261,300 | $279,300 | $540,600 | $8,125 |
| 2020 | $261,300 | $279,300 | $540,600 | $7,947 |
| 2019 | $261,300 | $279,300 | $540,600 | $8,033 |
| 2018 | $246,100 | $253,900 | $500,000 | $7,920 |
| 2017 | $246,100 | $253,900 | $500,000 | $7,690 |
| 2016 | $217,800 | $208,400 | $426,200 | $7,262 |
| 2015 | $217,800 | $208,400 | $426,200 | $7,156 |
| 2014 | $217,800 | $165,400 | $383,200 | $6,936 |
| 2011 | $217,800 | $165,400 | $383,200 | $6,644 |
| 2007 | $228,200 | $133,900 | $362,100 | $5,917 |
Property facts
Year built
1940
Property type
multi_family
Stories
2
Beds
5
Baths
3
Living area
2,598 sqft
Lot size
12,632 sqft
ZIP code
03801
City
Portsmouth
Street
Dennett St
Coordinates
43.07521, -70.77645
Comparable properties nearby
Frequently asked questions
When did 603 Dennett St last sell?
No public-record sale is on file for 603 Dennett St.
What is the current tax assessment for 603 Dennett St?
The most recent total assessment for 603 Dennett St (year 2025) is $776,400 with $8,936 in property tax.
When was 603 Dennett St built?
603 Dennett St was built in 1940.
How does 603 Dennett St compare to others on Dennett St?
We track 8 other properties on Dennett St. Browse the list under "Other properties on Dennett St" to compare beds, baths, and sale history.
What are the property facts for 603 Dennett St?
603 Dennett St is a 5 bed, 3 bath, 2,598 sqft, 12,632 sqft lot multi_family.
Is 603 Dennett St a flip candidate?
No — 603 Dennett St does not appear in our flips dataset.
Is 603 Dennett St a tax-appeal candidate?
No — 603 Dennett 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 Dennett St