3561 E 91st Ave, Thornton (Denver), CO 80229 Property Records

Adams County property record for 3561 E 91st Ave, Thornton, CO 80229

Property Summary

Property Type	Single Family Home
Details	3 bd · 1 ba · 960 sqft · built 1961
Lot Size	0.189 acres (8,276 sqft)
Owner	2 Individual Names on File
Tax Bill	$988 (2025)
Flood Zone	Zone X (minimal risk)
APN	`R0054517`

Property Details

APN / Parcel Number

Primary APN	`R0054517`
Alternative APNs	`0171924407009` `171924407009`

Interior

Bedrooms	3 Beds
Full Baths	1 Bath
Plumbing Fixtures	6 Plumbing Fixtures
Total Rooms	5 Rooms
Stories	1 Story
Building Area	960 sqft Living Area
1st Floor Area	960 sqft
Basement Area	960 sqft
Interior Walls	Wallboard/Drywall
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1961
Architectural Style	Ranch
Exterior Material	Brick/Stone
Construction Type	Frame
Roof Type	Gable/Hip
Roof Material	Composition Shingle
Lot Area	8,276 sqft (0.189 acres)
Lot Dimensions	100 ft deep x 82 ft wide

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Forced Air

Location & Zoning

Account Number	R0054517
Old Parcel Number	171924407009
Street Address	3561 E 91ST AVE
City	THORNTON
State	CO
Zip	80229-4049
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	SUB:THORNTON VALLEY EAST SECOND FILING BLK:8 LOT:9
Legal Range	68W
Legal Township	02S
Legal Section	24
Legal Quarter	SE
Legal Subdivision	THORNTON VALLEY EAST SECOND FILING
Legal Block	8
Legal Lot Number	9
Jurisdiction	ADAMS CO
Township / Civil Division	WEST ADAMS
Census Block Group	2
Census Block	2019
Census Tract	9104

Owner

Source: Adams County records · APN R0054517

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	3561 E 91ST AVE, THORNTON, CO 80229-4049
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
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	Mapleton School District 1 (PK - 12)

Tax Bill & Assessment History

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Year	Tax Bill	Assessed Value	Assessed Market Value
2025	$988.00 (-60.02%)	$23,320 (-6.83%) Land $5,630 Building $17,690	$373,000 (+0.81%) Land $90,000 Building $283,000
2023	$2,471.00 (-8.82%)	$25,030 (-7.94%) Land $5,610 Building $19,420	$370,000 (-5.4%) Land $83,000 Building $287,000
2022	$2,710.00	$27,190 Land $11,540 Building $15,650	$391,126 Land $166,000 Building $225,126

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Adams County (08001C), updated October 2, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · 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, availability as of December 31, 2025 · sampled at 451 locations within half a mile · Last verified October 2026

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
T-Mobile USA Fixed Wireless	100 / 20

May also be available: Aerux, AT&T, Lumen Technologies.

Drinking Water

Source: EPA Safe Drinking Water Information System via ECHO, 2026 Q3 · EPA community water system boundaries v3.0, 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.