340 21st Ave
Longmont, CO 80501
8 bd 4 ba 3,689 sqft Built 1978 Lot 8,102 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 | $46,213 | $10,756 | $56,969 | $5,980 |
| 2024 | $46,213 | $10,756 | $56,969 | $5,969 |
| 2023 | $52,709 | $13,380 | $66,089 | $5,887 |
| 2022 | $44,098 | $11,016 | $55,114 | $5,453 |
| 2021 | $46,368 | $11,583 | $57,951 | $5,646 |
| 2020 | $35,822 | $11,583 | $47,405 | $4,604 |
| 2019 | $35,822 | $11,583 | $47,405 | $4,532 |
| 2018 | $24,408 | $10,368 | $34,776 | $3,303 |
| 2017 | $24,408 | $10,368 | $34,776 | $3,258 |
| 2016 | $22,208 | $9,632 | $31,840 | $3,043 |
| 2015 | $22,208 | $9,632 | $31,840 | $2,900 |
| 2014 | $15,275 | $7,880 | $23,155 | $2,155 |
| 2013 | $15,275 | $7,880 | $23,155 | $2,162 |
| 2011 | $19,310 | $7,562 | $26,872 | $2,334 |
| 2010 | $19,310 | $7,562 | $26,872 | $2,570 |
| 2009 | $19,310 | $7,562 | $26,872 | $2,524 |
| 2008 | $22,300 | $7,560 | $29,860 | $2,507 |
Property facts
Year built
1978
Property type
multi_family
Stories
—
Beds
8
Baths
4
Living area
3,689 sqft
Lot size
8,102 sqft
ZIP code
80501
City
Longmont
Street
21st Ave
Coordinates
40.19610, -105.09931
Comparable properties nearby
Frequently asked questions
When did 340 21st Ave last sell?
No public-record sale is on file for 340 21st Ave.
What is the current tax assessment for 340 21st Ave?
The most recent total assessment for 340 21st Ave (year 2025) is $56,969 with $5,980 in property tax.
When was 340 21st Ave built?
340 21st Ave was built in 1978.
How does 340 21st Ave compare to others on 21st Ave?
We track 8 other properties on 21st Ave. Browse the list under "Other properties on 21st Ave" to compare beds, baths, and sale history.
What are the property facts for 340 21st Ave?
340 21st Ave is a 8 bed, 4 bath, 3,689 sqft, 8,102 sqft lot multi_family.
Is 340 21st Ave a flip candidate?
No — 340 21st Ave does not appear in our flips dataset.
Is 340 21st Ave a tax-appeal candidate?
No — 340 21st 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
+2.1%
Implied 1-yr
+8.3%
2026 Q3
$541.1K
2026 Q4
$551K
ZIP 80501 — Median Price History + Forecast
Explore nearby
Geography
Other properties on 21st Ave