21 Oak St
South Portland, ME 04106
4 bd 2 ba 1,728 sqft Built 1910 Lot 5,663 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 | $276,500 | $230,700 | $507,200 | $6,923 |
| 2023 | $241,500 | $158,700 | $400,200 | $5,659 |
| 2022 | $217,100 | $127,000 | $344,100 | $5,354 |
| 2021 | $217,100 | $127,000 | $344,100 | $5,058 |
| 2020 | $137,500 | $97,600 | $235,100 | $4,643 |
| 2019 | $137,500 | $97,600 | $235,100 | $4,490 |
| 2018 | $140,400 | $97,600 | $238,000 | $4,403 |
| 2017 | $140,400 | $97,600 | $238,000 | $4,284 |
| 2016 | $140,400 | $88,700 | $229,100 | $4,055 |
| 2015 | $140,400 | $88,700 | $229,100 | $3,986 |
| 2014 | $140,400 | $88,700 | $229,100 | $3,918 |
| 2012 | $140,400 | $88,700 | $229,100 | $3,615 |
| 2011 | $140,400 | $88,700 | $229,100 | $3,527 |
| 2009 | $140,400 | $98,600 | $239,000 | $3,322 |
| 2008 | $147,700 | $103,800 | $251,500 | $3,339 |
Property facts
Year built
1910
Property type
single_family
Stories
2
Beds
4
Baths
2
Living area
1,728 sqft
Lot size
5,663 sqft
ZIP code
04106
City
South Portland
Street
Oak St
Coordinates
43.64495, -70.24472
Comparable properties nearby
Frequently asked questions
When did 21 Oak St last sell?
No public-record sale is on file for 21 Oak St.
What is the current tax assessment for 21 Oak St?
The most recent total assessment for 21 Oak St (year 2025) is $507,200 with $6,923 in property tax.
When was 21 Oak St built?
21 Oak St was built in 1910.
How does 21 Oak St compare to others on Oak St?
We track 3 other properties on Oak St. Browse the list under "Other properties on Oak St" to compare beds, baths, and sale history.
What are the property facts for 21 Oak St?
21 Oak St is a 4 bed, 2 bath, 1,728 sqft, 5,663 sqft lot single_family.
Is 21 Oak St a flip candidate?
No — 21 Oak St does not appear in our flips dataset.
Is 21 Oak St a tax-appeal candidate?
No — 21 Oak 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
+3.2%
Implied 1-yr
+12.7%
2026 Q3
$655.1K
2026 Q4
$672.4K