4301 E 109th Ave, Thornton (Denver), CO 80233 Property Records

Adams County property record for 4301 E 109th Ave, Thornton, CO 80233

Property Summary

Property Type	Single Family Home
Details	4 bd · 2 ba · 1,736 sqft · built 1978
Lot Size	0.293 acres (12,780 sqft)
Owner	Individual Name on File
Last Sale	$215,950 (Jun 2005)
Tax Bill	$1,290 (2025)
Deeds & Mortgages	Mar 2018 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`1721-07-2-12-001`

Property Details

APN / Parcel Number

Primary APN	`1721-07-2-12-001`
Alternative APNs	`0172107212001` `R0074346`

Interior

Bedrooms	4 Beds
Full Baths	2 Baths
Plumbing Fixtures	9 Plumbing Fixtures
Total Rooms	7 Rooms
Stories	2 Stories
Building Area	1,736 sqft Living Area
Gross Area	2,646 sqft
Basement Area	416 sqft
Interior Walls	Wallboard/Drywall
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1978
Effective Year Built	Effective 1978
Architectural Style	Split Level
Exterior Material	Aluminum/Vinyl
Construction Type	Frame
Roof Type	Gable
Roof Material	Composition Shingle
Lot Area	12,780 sqft (0.293 acres)
Lot Dimensions	142 ft deep x 90 ft wide
Garage Type	Attached
Garage Area	494 sqft
Parking Spaces	2 Parking Spaces
Porch	Open Slab
Porch Area	120 sqft

Utilities, Heating & Cooling

Heating System	Baseboard
Heating Fuel	Electric

Location & Zoning

Account Number	R0074346
Street Address	4301 E 109TH AVE
City	THORNTON
State	CO
Zip	80233-5401
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	SUB:GRANGE CREEK PHASE 1 PUD FILING NO 4 LOT:8
Legal Range	67W
Legal Township	02S
Legal Section	07
Legal Quarter	2
Legal Subdivision	GRANGE CREEK
Legal Lot Number	8
Jurisdiction	ADAMS CO
Township / Civil Division	WEST ADAMS
Census Block Group	2
Census Block	2008
Census Tract	8534

Owner

Source: Adams County records · APN 1721-07-2-12-001

Assessment roll updated January 21, 2026 · Last verified July 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	Individual Name on File
Mailing Address	4301 E 109TH AVE, THORNTON, CO 80233-5401
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Last Sale	Jun 30, 2005 · Amount on Record
Deed Sale	Jun 30, 2005 · Amount on Record
Deed Document Number	2005695830
Last Transfer Date	Jan 06, 2018
Transfer Doc	0000016953
Record Updated	Sep 20, 2026

March 2018: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	ADAMS CO
Recording Date	Mar 01, 2018
Property Address	4301 E 109TH AVE, THORNTON, CO 80233-5401
Document Number	0000016953
Instrument Date	Jan 06, 2018
Instrument	2018000016953
Transaction Type	Transfer
Record Updated	Jan 27, 2022
Title Company	LAND TITLE GUARANTEE

Transaction

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

Transferred From (Grantor/Seller)

Name	Verified Name
Address	00000

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4301 E 109TH AVE, THORNTON, CO 80233-5401

Mortgage

Document Number	0000016954
Date	Mar 01, 2018
Instrument	2018000016954

Lender

Name	FAIRWAY INDEPENDENT MORTGAGE CORP
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Mar 01, 2048

Tax Assessment & Valuation

Source: Adams County records · Assessment roll updated January 21, 2026 · Last verified July 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	$1,290.00 (-59.95%)	$33,120 (-4.94%) Land $6,460 Building $26,660	$487,000 (-5.44%) Land $95,000 Building $392,000
2024	$3,221.00 (-15.26%)
2023	$3,801.00 (+10.62%)	$34,840 (+11.67%) Land $6,090 Building $28,750	$515,000 (+14.71%) Land $90,000 Building $425,000
2022	$3,436.00	$31,200 Land $11,400 Building $19,800	$448,951 Land $164,000 Building $284,951

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
Nearest Special Flood Hazard Area	Zone AE, within 500 ft
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)
Ting Fiber Fiber	2,000 / 2,000
BIF IV Intrepid HoldCo Fiber	2,000 / 2,000
Xfinity Cable	1,200 / 35
JAB Wireless Fixed Wireless	300 / 60
Lumen Technologies DSL	140 / 20

May also be available: Aerux, T-Mobile USA, Verizon.

Based on FCC filings for 591 locations within half a mile of this property.

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.