10012 Williams St, Thornton (Denver), CO 80229 Property Records

Adams County property record for 10012 Williams St, Thornton, CO 80229 · Last verified February 2026

Property Highlights

Property Type	Residential > Single Family > Home
Bedrooms	3 Beds
Bathrooms	3 Baths
Year Built	Built 2002
Square Footage	2,410 sqft Living Area
Lot Size	7,405 sqft (0.169 acres)
Occupancy	Owner Occupied
Last Sale	$290,220 (2003)
Tax Bill	$1,574.00 (2025)

Property Details

APN / Parcel Number

Primary APN	`R0145061`
Alternative APNs	`0171914109118` `171914109118`

Interior

Bedrooms	3 Beds
Full Baths	3 Baths
Plumbing Fixtures	13 Plumbing Fixtures
Total Rooms	7 Rooms
Building Area	2,410 sqft Living Area
1st Floor	986 sqft 1st Floor
2nd Floor	1,424 sqft 2nd Floor
Basement Area	692 sqft Basement
Stories	2 Stories
Interior Structure	Wallboard/Drywall Interior Structure
Fireplace	Fireplace
Fireplaces	1 Fireplaces

Exterior

Year Built	Built 2002
Architectural Style	Other Style
Exterior Material	Aluminum/Vinyl Exterior
Construction Type	Frame Construction
Roof Construction	Gable Roof Construction
Roof Material	Composition Shingle Roof
Lot Area	7,405 sqft (0.169 acres)
Parking Spaces	3 Parking Spaces
Garage Type	Attached Garage
Garage Area	815 sqft Garage

Exterior Amenities

Deck Area	288 sqft Deck
Patio Area	288 sqft Patio
Porch	Porch
Porch Area	96 sqft Porch

Utilities and HVAC

Cooling System	Central Cooling
Heating System	HVAC Heating

Location & Zoning

Account Number	R0145061
Old Parcel Number	171914109118
Street Address	10012 WILLIAMS ST
City	THORNTON
State	CO
Zip	80229-3980
Property Usage	Residential Property Usage
Type	Residential > Single Family > Home
Legal Description	SUB:LAMBERTSON LAKES SUBD BLK:12 LOT:15
Legal Range	68W
Legal Township	02S
Legal Section	14
Legal Quarter	SE
Legal Subdivision	LAMBERTSON LAKES
Legal Block	12
Legal Lot Number	15
Jurisdiction	ADAMS CO
Minor Civil Division	WEST ADAMS
Census Blockgroup	1
Census Block	1002
Census Tract	9204

Owner

Source: Adams County records · APN R0145061

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 Individuals Owners
Mailing Address	10012 WILLIAMS ST, THORNTON, CO 80229-3980
Occupancy	Owner Occupied
Owner Type	Owner is an Individual, Couple or Unincorporated Entity

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Known Transactions	Last Sale Amount on Jun 25, 2003 Deed Sale Price on Jun 25, 2003
Deed Doc Number	C1164481
Record Refreshed	Jun 08, 2026

September 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ADAMS CO
Property Address	10012 WILLIAMS ST, THORNTON, CO 80229-3980
Transaction Type	Mortgage
Record Updated	Sep 14, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	10012 WILLIAMS ST, THORNTON, CO 80229-3980

Mortgage

Document Number	0000075278
Date	Sep 07, 2022
Instrument	2022000075278

Lender

Name	FIRSTBANK
Type	Bank
Address	DENVER, CO 80215

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	119 Months
Due	Aug 26, 2032

Interest

Rate Type	Adjustable Rate
Rate	5.5%
Change Frequency	Monthly (Revolving credit lines are monthly unless stated otherwise).

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	$1,574.00 (-75.53%)	$37,130 (-13.02%) Land $7,630 Building $29,500	$594,000 (-5.86%) Land $122,000 Building $472,000
2023	$6,433.00 (+7.92%)	$42,690 (+8.96%) Land $8,120 Building $34,570	$631,000 (+11.93%) Land $120,000 Building $511,000
2022	$5,961.00	$39,180 Land $16,120 Building $23,060	$563,736 Land $232,000 Building $331,736