21 St Marks Sq
Guilderland, NY 12159
2 bd 2 ba 1,292 sqft Built 2016 townhomes
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 | $184,900 | $5,100 | $190,000 | $5,291 |
| 2024 | $184,900 | $5,100 | $190,000 | $5,130 |
| 2023 | $184,900 | $5,100 | $190,000 | $3,805 |
| 2022 | $184,900 | $5,100 | $190,000 | $2,530 |
| 2021 | $184,900 | $5,100 | $190,000 | $3,623 |
| 2020 | $184,900 | $5,100 | $190,000 | $3,587 |
| 2017 | $167,800 | $4,900 | $172,700 | $8,300 |
| 2016 | $301,200 | $500 | $301,700 | $310 |
| 2015 | — | $500 | $500 | $40 |
| 2014 | — | $500 | $500 | $40 |
| 2013 | — | $500 | $500 | $40 |
Property facts
Year built
2016
Property type
townhomes
Stories
—
Beds
2
Baths
2
Living area
1,292 sqft
Lot size
—
ZIP code
12159
City
Guilderland
Street
St Marks Sq
Coordinates
42.68186, -73.90493
Comparable properties nearby
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 21 St Marks Sq last sell?
No public-record sale is on file for 21 St Marks Sq.
What is the current tax assessment for 21 St Marks Sq?
The most recent total assessment for 21 St Marks Sq (year 2025) is $190,000 with $5,291 in property tax.
When was 21 St Marks Sq built?
21 St Marks Sq was built in 2016.
How does 21 St Marks Sq compare to others on St Marks Sq?
We track 1 other property on St Marks Sq. Browse the list under "Other properties on St Marks Sq" to compare beds, baths, and sale history.
What are the property facts for 21 St Marks Sq?
21 St Marks Sq is a 2 bed, 2 bath, 1,292 sqft townhomes.
Is 21 St Marks Sq a flip candidate?
No — 21 St Marks Sq does not appear in our flips dataset.
Is 21 St Marks Sq a tax-appeal candidate?
No — 21 St Marks Sq is not currently flagged as a tax-appeal candidate.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
-6.1%
Implied 1-yr
-24.6%
2026 Q3
$279.4K
2026 Q4
$250.8K
ZIP 12159 — Median Price History + Forecast
Explore nearby
Geography
Other properties on St Marks Sq