4102 E 129th Cir, Thornton, CO 80241 Property Records

Adams County property record for 4102 E 129th Cir, Thornton, CO 80241

Property Summary

Property Type	Single Family Home
Details	3 bd · 3 ba · 1,376 sqft · built 1989
Lot Size	0.119 acres (5,227 sqft)
Owner	2 Individual Names on File
Last Sale	$135,500 (Jan 1998)
Tax Bill	$1,219 (2025)
Flood Zone	Zone X (minimal risk)
APN	`R0010383`

Property Details

APN / Parcel Number

Primary APN	`R0010383`
Alternative APNs	`0157130319030` `157130319030`

Interior

Bedrooms	3 Beds
Full Baths	3 Baths
Plumbing Fixtures	12 Plumbing Fixtures
Total Rooms	5 Rooms
Stories	2 Stories
Building Area	1,376 sqft Living Area
1st Floor Area	686 sqft
2nd Floor Area	690 sqft
Basement Area	652 sqft
Interior Walls	Wallboard/Drywall
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1989
Architectural Style	Other
Exterior Material	Aluminum/Vinyl
Construction Type	Frame
Roof Type	Gable
Roof Material	Composition Shingle
Lot Area	5,227 sqft (0.119 acres)
Lot Dimensions	106 ft deep x 51 ft wide
Garage Type	Attached
Garage Area	416 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Forced Air

Location & Zoning

Account Number	R0010383
Old Parcel Number	157130319030
Street Address	4102 E 129TH CIR
City	THORNTON
State	CO
Zip	80241-2277
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	SUB:COUNTRY HILLS ESTATES SECOND FILING BLK:1 LOT:56
Legal Range	67W
Legal Township	01S
Legal Section	30
Legal Quarter	SW
Legal Subdivision	COUNTRY HILLS ESTATES SECOND FILING
Legal Block	1
Legal Lot Number	56
Jurisdiction	ADAMS CO
Township / Civil Division	WEST ADAMS
Census Block Group	4
Census Block	4007
Census Tract	8524

Owner

Source: Adams County records · APN R0010383

Assessment roll updated August 25, 2025 · Last verified February 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	2580 E 150TH AVE, THORNTON, CO 80602-7361
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Jan 20, 1998 · Amount on Record
Deed Sale	Jan 20, 1998 · Amount on Record
Prior Sale	Oct 23, 1995 · Amount on Record
Deed Document Number	00355528
Deed Book / Page	5211 / 339
Record Updated	Jun 08, 2026

Tax Assessment & Valuation

Source: Adams County records · Assessment roll updated August 25, 2025 · Last verified February 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

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.

Year	Tax Bill	Assessed Value	Assessed Market Value
2025	$1,219.00 (-66.36%)	$28,750 (-13.43%) Land $8,560 Building $20,190	$460,000 (-6.31%) Land $137,000 Building $323,000
2023	$3,624.00 (+5.47%)	$33,210 (+6.44%) Land $6,830 Building $26,380	$491,000 (+9.37%) Land $101,000 Building $390,000
2022	$3,436.00	$31,200 Land $14,040 Building $17,160	$448,935 Land $202,000 Building $246,935

Flood & Wildfire

Source: FEMA National Flood Hazard Layer as of October 2, 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it

Wildfire

Wildfire Risk	Low lower than 98% of the US · lower than 99.2% of Colorado
Wildfire Likelihood	Under 0.01% annual chance
Exposure	None beyond ember reach

Values are read at the parcel center point; lenders make the official flood determination.

Internet Providers

Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026

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

May also be available: Verizon.

Based on FCC filings for 831 locations within half a mile of this property.

Cell Coverage

5G (outdoors only) and 4G LTE

Drinking Water

Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026

Water System	CITY OF THORNTON serves 226,465 people
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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.