2840 21st St
Boulder, CO 80304
3 bd 2 ba 1,175 sqft Built 1955 Lot 8,252 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 | $10,406 | $58,950 | $69,356 | $6,613 |
| 2024 | $10,406 | $58,950 | $69,356 | $7,037 |
| 2023 | $21,340 | $62,424 | $83,764 | $6,915 |
| 2022 | $12,218 | $47,121 | $59,339 | $5,510 |
| 2021 | $12,570 | $48,477 | $61,047 | $5,254 |
| 2020 | $11,054 | $44,259 | $55,313 | $4,814 |
| 2019 | $11,054 | $44,259 | $55,313 | $4,741 |
| 2018 | $8,388 | $33,552 | $41,940 | $3,636 |
| 2017 | $8,388 | $33,552 | $41,940 | $3,522 |
| 2016 | $7,626 | $30,487 | $38,113 | $3,299 |
| 2015 | $7,626 | $30,487 | $38,113 | $3,124 |
| 2014 | $16,222 | $16,000 | $32,222 | $2,770 |
| 2013 | $16,222 | $16,000 | $32,222 | $2,709 |
| 2011 | $12,656 | $16,955 | $29,611 | $2,458 |
| 2010 | $12,656 | $16,955 | $29,611 | $2,692 |
| 2009 | $12,656 | $16,955 | $29,611 | $2,513 |
| 2008 | $10,710 | $19,100 | $29,810 | $2,192 |
Property facts
Year built
1955
Property type
single_family
Stories
1
Beds
3
Baths
2
Living area
1,175 sqft
Lot size
8,252 sqft
ZIP code
80304
City
Boulder
Street
21st St
Coordinates
40.02869, -105.27028
Comparable properties nearby
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 2840 21st St last sell?
No public-record sale is on file for 2840 21st St.
What is the current tax assessment for 2840 21st St?
The most recent total assessment for 2840 21st St (year 2025) is $69,356 with $6,613 in property tax.
When was 2840 21st St built?
2840 21st St was built in 1955.
How does 2840 21st St compare to others on 21st St?
We track 8 other properties on 21st St. Browse the list under "Other properties on 21st St" to compare beds, baths, and sale history.
What are the property facts for 2840 21st St?
2840 21st St is a 3 bed, 2 bath, 1,175 sqft, 8,252 sqft lot single_family.
Is 2840 21st St a flip candidate?
No — 2840 21st St does not appear in our flips dataset.
Is 2840 21st St a tax-appeal candidate?
No — 2840 21st 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
+1.2%
Implied 1-yr
+5.0%
2026 Q3
$2.17M
2026 Q4
$2.2M
ZIP 80304 — Median Price History + Forecast
Explore nearby
Geography
Other properties on 21st St