3510 E 99th Ln, Thornton (Denver), CO 80229 Property Records

Adams County property record for 3510 E 99th Ln, Thornton, CO 80229

Property Summary

Property Type	Single Family Home
Details	3 bd · 1 ba · 1,268 sqft · built 1984
Lot Size	0.217 acres (9,434 sqft)
Owner	Company Name on File
Last Sale	$134,950 (Dec 1998)
Tax Bill	$1,060 (2025)
Deeds & Mortgages	Dec 2025 Transfer Apr 2018 Transfer + 1 more
Flood Zone	Zone X (minimal risk)
APN	`1719-13-4-01-021`

Property Details

APN / Parcel Number

Primary APN	`1719-13-4-01-021`
Alternative APNs	`0171913401021` `R0040230`

Interior

Bedrooms	3 Beds
Full Baths	1 Bath
Plumbing Fixtures	6 Plumbing Fixtures
Total Rooms	5 Rooms
Stories	2 Stories
Building Area	1,268 sqft Living Area
Gross Area	1,743 sqft
Basement Area	400 sqft
Interior Walls	Wallboard/Drywall
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1984
Effective Year Built	Effective 1984
Architectural Style	Split Level
Exterior Material	Aluminum/Vinyl
Construction Type	Frame
Roof Type	Gable
Roof Material	Composition Shingle
Lot Area	9,434 sqft (0.217 acres)
Lot Dimensions	106 ft deep x 89 ft wide
Garage Type	Attached
Garage Area	475 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0040230
Street Address	3510 E 99TH LN
City	THORNTON
State	CO
Zip	80229-2813
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	SUB:NORTH HILLS FILING NUMBER ONE SUBD BLK:2 LOT:9
Legal Range	68W
Legal Township	02S
Legal Section	13
Legal Quarter	4
Legal Subdivision	NORTH HILLS FILING NUMBER ONE SUBD
Legal Block	2
Legal Lot Number	9
Jurisdiction	ADAMS CO
Township / Civil Division	WEST ADAMS
Census Block Group	1
Census Block	1011
Census Tract	9207

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	Company Name on File
Mailing Address	328 ASPEN DR, FREDERICK, CO 80530-8041
Owner Type	Company
Vesting	Limited Liability Partnership

Deeds, Mortgages & Sale History

Date	Document
Dec 16, 2025	Quit Claim Deed, Transfer Quitclaim
Apr 19, 2018	Quit Claim Deed, Transfer Quitclaim
Apr 11, 2017	Quit Claim Deed, Transfer Quitclaim

Assessor's Deed Record

Deed Names	Verified Name on Deed
Last Sale	Dec 17, 1998 · Amount on Record
Deed Sale	Dec 17, 1998 · Amount on Record
Prior Sale	Mar 21, 1995 · Amount on Record
Deed Document Number	1998481843
Deed Book / Page	5582 / 499
Last Transfer Date	Dec 15, 2025
Transfer Doc	0000073878
Record Updated	Sep 20, 2026

December 2025: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	ADAMS CO
Recording Date	Dec 16, 2025
Property Address	3510 E 99TH LN, THORNTON, CO 80229-2813
Document Number	0000073878
Instrument Date	Dec 15, 2025
Instrument	2025000073878
Transaction Type	Transfer
Record Updated	Dec 26, 2025

Transaction

Tax	$0.00
Amount Accuracy	No Consideration Stated
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	328 ASPEN DR, FREDERICK, CO 80530-8041

April 2018: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	ADAMS CO
Recording Date	Apr 19, 2018
Property Address	3510 E 99TH LN, THORNTON, CO 80229-2813
Document Number	0000031495
Instrument Date	Apr 18, 2018
Instrument	31495
Transaction Type	Transfer
Record Updated	Apr 30, 2018

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	3510 E 99TH LN THORNTON CO 802292813, THORNTON, CO 80229-2813

April 2017: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	ADAMS CO
Recording Date	Apr 11, 2017
Property Address	3510 E 99TH LN, THORNTON, CO 80229-2813
Document Number	0000031479
Instrument Date	Mar 7, 2017
Instrument	31479
Transaction Type	Transfer
Record Updated	Apr 20, 2017

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	3510 E 99TH LN THORNTON CO 802292813, THORNTON, CO 80229-2813

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	Mapleton School District 1 (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2025	$1,060.00 (-56.52%)	$27,200 (-7.33%) Land $6,120 Building $21,080	$400,000 (-8.68%) Land $90,000 Building $310,000
2024	$2,438.00 (-16.65%)	$29,350 (-0.94%) Land $5,700 Building $23,650	$438,000 (-) Land $85,000 Building $353,000
2023	$2,925.00 (+0.34%)	$29,630 (+1.3%) Land $5,750 Building $23,880	$438,000 (+4.08%) Land $85,000 Building $353,000
2022	$2,915.00	$29,250 Land $11,820 Building $17,430	$420,846 Land $170,000 Building $250,846

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

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

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

Wildfire

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

Wildfire Risk	Low lower than 99.1% of the US · lower than 99.6% of Colorado
Wildfire Likelihood	Under 0.01% annual chance
Exposure	Direct burnable vegetation at the parcel

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 631 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
Verizon Fixed Wireless	300 / 20
Lumen Technologies DSL	140 / 20
JAB Wireless Fixed Wireless	100 / 20
T-Mobile USA Fixed Wireless	100 / 20

May also be available: Aerux.

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