50 New Castle Ave
Portsmouth, NH 03801
4 bd 4 ba 2,510 sqft Built 1900 Lot 9,583 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 | $1,350,300 | $875,400 | $2,225,700 | $25,618 |
| 2023 | $739,300 | $513,000 | $1,252,300 | $20,200 |
| 2022 | $193,500 | $513,000 | $706,500 | $10,739 |
| 2021 | $207,800 | $467,300 | $675,100 | $10,147 |
| 2020 | $207,800 | $467,300 | $675,100 | $9,924 |
| 2019 | $207,800 | $467,300 | $675,100 | $10,032 |
| 2018 | $185,000 | $366,100 | $551,100 | $8,729 |
| 2017 | $183,300 | $366,100 | $549,400 | $8,450 |
| 2016 | $162,300 | $297,500 | $459,800 | $7,835 |
| 2015 | $162,300 | $297,500 | $459,800 | $7,720 |
| 2014 | $124,200 | $266,700 | $390,900 | $7,075 |
| 2011 | $126,400 | $266,700 | $393,100 | $6,816 |
| 2007 | $148,700 | $197,000 | $345,700 | $5,649 |
Property facts
Year built
1900
Property type
single_family
Stories
2
Beds
4
Baths
4
Living area
2,510 sqft
Lot size
9,583 sqft
ZIP code
03801
City
Portsmouth
Street
New Castle Ave
Coordinates
43.07002, -70.75109
Comparable properties nearby
Frequently asked questions
When did 50 New Castle Ave last sell?
No public-record sale is on file for 50 New Castle Ave.
What is the current tax assessment for 50 New Castle Ave?
The most recent total assessment for 50 New Castle Ave (year 2025) is $2,225,700 with $25,618 in property tax.
When was 50 New Castle Ave built?
50 New Castle Ave was built in 1900.
How does 50 New Castle Ave compare to others on New Castle Ave?
We track 8 other properties on New Castle Ave. Browse the list under "Other properties on New Castle Ave" to compare beds, baths, and sale history.
What are the property facts for 50 New Castle Ave?
50 New Castle Ave is a 4 bed, 4 bath, 2,510 sqft, 9,583 sqft lot single_family.
Is 50 New Castle Ave a flip candidate?
No — 50 New Castle Ave does not appear in our flips dataset.
Is 50 New Castle Ave a tax-appeal candidate?
No — 50 New Castle Ave 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 New Castle Ave