3939 121st Ave
Thornton, CO 80241
2 bd 2 ba 1,085 sqft Built 1985 Lot 1,122 sqft 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 | $18,220 | $5,440 | $23,660 | $2,663 |
| 2023 | $21,040 | $3,860 | $24,900 | $2,169 |
| 2022 | $18,230 | $1,040 | $19,270 | $2,122 |
| 2021 | $18,750 | $1,070 | $19,820 | $2,192 |
| 2020 | $17,190 | $1,070 | $18,260 | $2,037 |
| 2019 | $17,190 | $1,070 | $18,260 | $2,041 |
| 2018 | $14,350 | $1,080 | $15,430 | $1,775 |
| 2017 | $14,350 | $1,080 | $15,430 | $1,614 |
| 2016 | $10,580 | $1,190 | $11,770 | $1,264 |
| 2015 | $11,430 | $1,190 | $12,620 | $1,354 |
| 2014 | $5,360 | $1,190 | $6,550 | $723 |
| 2013 | $5,360 | $1,190 | $6,550 | $720 |
| 2011 | $6,180 | $1,190 | $7,370 | $822 |
| 2010 | $6,180 | $1,190 | $7,370 | $1,067 |
| 2009 | $7,330 | $2,230 | $9,560 | $1,065 |
| 2007 | $8,000 | $2,230 | $10,230 | $1,082 |
Property facts
Year built
1985
Property type
townhomes
Stories
2
Beds
2
Baths
2
Living area
1,085 sqft
Lot size
1,122 sqft
ZIP code
80241
City
Thornton
Street
121st Ave
Coordinates
39.91745, -104.94102
Comparable properties nearby
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 3939 121st Ave last sell?
No public-record sale is on file for 3939 121st Ave.
What is the current tax assessment for 3939 121st Ave?
The most recent total assessment for 3939 121st Ave (year 2025) is $23,660 with $2,663 in property tax.
When was 3939 121st Ave built?
3939 121st Ave was built in 1985.
How does 3939 121st Ave compare to others on 121st Ave?
We track 8 other properties on 121st Ave. Browse the list under "Other properties on 121st Ave" to compare beds, baths, and sale history.
What are the property facts for 3939 121st Ave?
3939 121st Ave is a 2 bed, 2 bath, 1,085 sqft, 1,122 sqft lot townhomes.
Is 3939 121st Ave a flip candidate?
No — 3939 121st Ave does not appear in our flips dataset.
Is 3939 121st Ave a tax-appeal candidate?
No — 3939 121st 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
+8.4%
2026 Q3
$570.8K
2026 Q4
$581.4K
ZIP 80241 — Median Price History + Forecast
Explore nearby
Geography
Other properties on 121st Ave