3655 E 104th Ave, Thornton (Denver), CO 80233 Property Records

Adams County property record for 3655 E 104th Ave, Thornton, CO 80233 · Last verified February 2026

Property Summary

Property Type	Medical Building
Details	10,240 sqft · built 1999
Lot Size	1.25 acres (54,494 sqft)
Owner	Owner Name on File
Last Sale	$414,700 (Jan 1999)
Tax Bill	$30,251 (2025)
Flood Zone	Zone X (minimal risk)
APN	`R0114727`

Property Details

APN / Parcel Number

Primary APN	`R0114727`
Alternative APNs	`0171912411011` `171912411011`

Interior

Stories	1 Story
Building Area	10,240 sqft Total Area
1st Floor Area	10,240 sqft

Exterior

Year Built	Built 1999
Architectural Style	Other
Fire Resistance	Wood or Wood & Steel Frame
Roof Type	Flat
Lot Area	54,494 sqft (1.25 acres)

Utilities, Heating & Cooling

Cooling System	HVAC
Heating System	HVAC

Location & Zoning

Account Number	R0114727
Old Parcel Number	171912411011
Street Address	3655 E 104TH AVE
City	THORNTON
State	CO
Zip	80233-4469
Property Category	Commercial
Property Type	Commercial > Office > Medical Building
Legal Description	SUB:COLONY SQUARE 1ST AMENDMENT LOT:8
Legal Range	68W
Legal Township	02S
Legal Section	12
Legal Quarter	NW
Legal Subdivision	COLONY SQUARE 1ST AMENDMENT
Legal Lot Number	8
Jurisdiction	ADAMS CO
Township / Civil Division	WEST ADAMS
Census Block Group	1
Census Block	1014
Census Tract	8533

Owner

Source: Adams County records · APN R0114727

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	Owner Name on File
Mailing Address	3655 E 104TH AVE, THORNTON, CO 80233-4469
Occupancy	Owner Occupied

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Last Sale	Jan 22, 1999 · Amount on Record
Deed Sale	Jan 22, 1999 · Amount on Record
Deed Document Number	C0496317
Deed Book / Page	5624 / 643
Last Transfer Date	Jan 25, 1999
Transfer Doc	000C496317
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	$30,251.00 (-44.46%)	$713,420 (+30.57%) Land $155,960 Building $557,460	$2,642,286 (+34.92%) Land $577,632 Building $2,064,654
2023	$54,469.00 (-11.65%)	$546,390 (-11.66%) Land $161,160 Building $385,230	$1,958,400 (-8.18%) Land $577,632 Building $1,380,768
2022	$61,653.00	$618,510 Land $335,020 Building $283,490	$2,132,832 Land $1,155,264 Building $977,568

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
Special Flood Hazard Area	No
Flood Hazard	Minimal
500-Year Floodplain	No

Wildfire

Wildfire Risk	Not rated no burnable land in reach
Wildfire Likelihood	Negligible
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 · Published October 2026 · based on 721 locations within about half a mile of this property

Provider	Technology	Download / Upload (Mbps)
Xfinity	Cable	2,000 / 250
JAB Wireless	Fixed Wireless (unlicensed)	100 / 20
T-Mobile USA	Fixed Wireless	100 / 20
AT&T	Fixed Wireless	100 / 20

May also be available at this address: BIF IV Intrepid HoldCo, Aerux, Verizon, Lumen Technologies. Availability varies by address; speeds are provider-advertised maximums, not measured.