3700 E 99th Ln, Thornton (Denver), CO 80229 Property Records

Adams County property record for 3700 E 99th Ln, Thornton, CO 80229 · Last verified February 2026

Property Highlights

Property Type	Residential > Single Family > Home
Bedrooms	4 Beds
Bathrooms	2 Baths
Year Built	Built 2016
Square Footage	1,142 sqft Living Area
Lot Size	7,841 sqft (0.18 acres)
Occupancy	Owner Occupied
Last Sale	$406,000 (2021)
Tax Bill	$1,290.00 (2025)

Property Details

APN / Parcel Number

Primary APN	`R0040366`
Alternative APNs	`0171913408001` `171913408001`

Interior

Bedrooms	4 Beds
Full Baths	2 Baths
Plumbing Fixtures	7 Plumbing Fixtures
Total Rooms	8 Rooms
Building Area	1,142 sqft Living Area
1st Floor	1,142 sqft 1st Floor
Basement Area	884 sqft Basement
Finished Basement	800 sqft Finished
Stories	1 Stories
Interior Structure	Wallboard/Drywall Interior Structure
Fireplace	Fireplace

Exterior

Year Built	Built 1988
Effective Year Built	Effective 2016
Architectural Style	Ranch Style
Exterior Material	Aluminum/Vinyl Exterior
Construction Type	Frame Construction
Foundation Type	Concrete Foundation
Roof Construction	Gable Roof Construction
Roof Material	Composition Shingle Roof
Lot Area	7,841 sqft (0.18 acres)
Depth X Width	98 ft x 79 ft Depth x Width
Parking Spaces	1 Parking Spaces
Garage Type	Attached Garage
Garage Area	380 sqft Garage

Exterior Amenities

Shed	1 Shed
Shed Area	130 sqft Shed
Porch	Porch
Porch Area	120 sqft Porch
Storage Building	80 sqft Storage Building

Utilities and HVAC

Cooling System	Central Cooling
Heating System	Forced Air Heating

Location & Zoning

Account Number	R0040366
Old Parcel Number	171913408001
Street Address	3700 E 99TH LN
City	THORNTON
State	CO
Zip	80229-2843
Property Usage	Residential Property Usage
Type	Residential > Single Family > Home
Legal Description	SUB:NORTH HILLS FILING NUMBER ONE SUBD BLK:4 LOT:1
Legal Range	68W
Legal Township	02S
Legal Section	13
Legal Quarter	SW
Legal Subdivision	NORTH HILLS FILING NUMBER ONE SUBD
Legal Block	4
Legal Lot Number	1
Jurisdiction	ADAMS CO
Minor Civil Division	WEST ADAMS
Census Blockgroup	1
Census Block	1003
Census Tract	9207

Owner

Source: Adams County records · APN R0040366

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	Individual Owner on File
Mailing Address	3700 E 99TH LN, THORNTON, CO 80229-2843
Occupancy	Owner Occupied
Owner Type	Owner is an Individual, Couple or Unincorporated Entity

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Known Transactions	Last Sale Amount on Feb 02, 2021 Deed Sale Price on Feb 02, 2021 Prior Sale Amount on Jul 19, 2016
Deed Doc Number	2021000012558
Record Refreshed	Jun 08, 2026

February 2021: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	ADAMS CO
Recording Date	Feb 02, 2021
Property Address	3700 E 99TH LN, THORNTON, CO 80229-2843
Document Number	0000012559
Instrument Date	Jan 22, 2021
Instrument	2021000012559
Transaction Type	Transfer
Record Updated	Jan 27, 2022
Title Company	LAND TITLE GUARANTY COMPANY IN, LAND TITLE GUARANTEE COMPANY

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on File
Loan-to-Value (LTV)	LTV on Record
Tax	$40.60
Amount Accuracy	Full Amount Stated
Additional	Arms Length Transaction

Transferred From (Grantor/Seller)

Name	Verified Name
Address	3700 E 99TH LN, 3700, THORNTON, CO 80229-2843

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	3700 E 99TH LN, THORNTON, CO 80229-2843

Mortgage

Document Number	0000012560
Date	Feb 02, 2021
Instrument	2021000012560

Lender

Name	FIRSTBANK
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Feb 01, 2051

Interest

Rate Type	Adjustable Rate
Rate	3%
Adjustable	Document includes a rider for adjustable-rate mortgage with a specific rate change date.
Type Change Date	Feb 01, 2028
Change Frequency	Annually
Min Rate At Change	2.75%
Max Rate At Change	6%
Index	1-Year CMT
Max Rate	8%

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, not market price estimates; both are a fraction of this property's market value.

Year	Tax Bill	Assessed Value	Assessed Market Value
2025	$1,290.00 (-64.03%)	$30,440 (-16.21%) Land $5,630 Building $24,810	$487,000 (-9.31%) Land $90,000 Building $397,000
2023	$3,586.00 (+14.79%)	$36,330 (+15.89%) Land $5,750 Building $30,580	$537,000 (+19.08%) Land $85,000 Building $452,000
2022	$3,124.00	$31,350 Land $11,820 Building $19,530	$450,974 Land $170,000 Building $280,974