5431 E 129th Ave, Thornton, CO 80241 Property Records

Adams County property record for 5431 E 129th Ave, Thornton, CO 80241

Property Summary

Property Type	Single Family Home
Details	3 bd · 2.5 ba · 1,388 sqft · built 1997
Lot Size	0.163 acres (7,090 sqft)
Owner	2 Individual Names on File
Last Sale	$522,500 (May 2025)
Tax Bill	$3,719 (2025)
Deeds & Mortgages	Jun 2019 Line of Credit
Flood Zone	Zone X (minimal risk)
APN	`1571-30-0-10-029`

Property Details

APN / Parcel Number

Primary APN	`1571-30-0-10-029`
Alternative APNs	`0157130010029` `R0009530`

Interior

Bedrooms	3 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Plumbing Fixtures	11 Plumbing Fixtures
Total Rooms	5 Rooms
Stories	2 Stories
Building Area	1,388 sqft Living Area
Gross Area	2,068 sqft
1st Floor Area	654 sqft
2nd Floor Area	734 sqft
Basement Area	280 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1997
Effective Year Built	Effective 2020
Exterior Material	Aluminum/Vinyl
Construction Type	Frame
Roof Type	Gable
Roof Material	Composition Shingle
Lot Area	7,090 sqft (0.163 acres)
View / Lot	Open Space
Garage Type	Attached
Garage Area	400 sqft
Parking Spaces	2 Parking Spaces
Porch	Open Slab
Porch Area	44 sqft

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0009530
Street Address	5431 E 129TH AVE
City	THORNTON
State	CO
Zip	80241-2344
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	SUB:WOODBRIDGE STATION FILING NO 4 BLK:6 LOT:29
Legal Range	67W
Legal Township	01S
Legal Section	30
Legal Subdivision	WOODBRIDGE STATION
Legal Block	6
Legal Lot Number	29
Jurisdiction	ADAMS CO
Township / Civil Division	WEST ADAMS
Census Block Group	1
Census Block	1010
Census Tract	8524

Owner

Source: Adams County assessment roll, as of January 21, 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	2 Individual Names on File
Mailing Address	5431 E 129TH AVE, THORNTON, CO 80241-2344
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	May 16, 2025 · Amount on Record
Deed Sale	May 16, 2025 · Amount on Record
Prior Sale	Aug 2, 2007 · Amount on Record
Deed Document Number	202527969
Prior Transfer Date	Jun 17, 2019
Prior Transfer Doc	0000050035
Record Updated	Sep 20, 2026

June 2019: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	ADAMS CO
Recording Date	Jun 27, 2019
Property Address	5431 E 129TH AVE, THORNTON, CO 80241-2344
Document Number	0000050035
Instrument Date	Jun 17, 2019
Instrument	50035
Transaction Type	Transfer
Record Updated	Jul 8, 2019
Title Company	NOT AVAILABLE

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants with Right of Survivorship
Address	5431 E 129TH AVE DENVER CO 802412344, DENVER, CO 80241-2344

Mortgage

Document Number	50036
Date	Jun 27, 2019
Instrument	50036

Lender

Name	FIRSTBANK
Type	Bank
Address	LAKEWOOD, CO 80215

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	120 Months
Due	Jun 26, 2029

Interest

Rate Type	Adjustable Rate
Rate	5.5%

Tax Assessment & Valuation

Source: Adams County assessment roll, as of January 21, 2026

Property Jurisdictions

Type	Name
State	Colorado
County	Adams County
Municipality	Thornton City
Unified School District	Adams 12 Five Star Schools (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2025	$3,719.00 (+15.71%)	$33,050 (-4.97%) Land $6,800 Building $26,250	$486,000 (-5.45%) Land $100,000 Building $386,000
2024	$3,214.00 (-15.29%)
2023	$3,794.00 (+6.07%)	$34,780 (+7.08%) Land $6,160 Building $28,620	$514,000 (+9.97%) Land $91,000 Building $423,000
2022	$3,577.00	$32,480 Land $12,640 Building $19,840	$467,412 Land $182,000 Building $285,412

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

Flood

Source: FEMA National Flood Hazard Layer, effective October 2, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Community Rating System	Class 5 (25% premium discount)
Nearby Flood Policies	1 in force

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Not rated no burnable land within ember reach

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	CITY OF THORNTON serves 226,465 people · EPA ID CO0101150
Water Source	Surface water
Last State Inspection	Jul 2024
Lead	2 ppb (2025) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	3 last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.

Internet Providers

Source: FCC Broadband Data Collection, based on 851 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
JAB Wireless Fixed Wireless	500 / 100
Verizon Fixed Wireless	300 / 20
Lumen Technologies DSL · Fiber in parts of the area	140 / 20