639 1st Ave, Lyons, CO 80540 Property Records

Boulder County property record for 639 1st Ave, Lyons, CO 80540

Property Summary

Property Type	Single Family Home
Details	3 bd · 2.75 ba · 1,645 sqft · built 2002
Lot Size	0.194 acres (8,451 sqft)
Owner	Individual Name on Record
Last Sale	$334,000 (Jun 2004)
Tax Bill	$7,027 (2025)
Deeds & Mortgages	Jun 2017 Line of Credit
Flood Zone	Zone X (minimal risk)
APN	`1203-18-4-53-006`

Property Details

APN / Parcel Number

Primary APN	`1203-18-4-53-006`
Alternative APNs	`R0503792` `0503792`

Interior

Bedrooms	3 Beds
Full Baths	2.75 Baths
Half Baths	1 Half Bath
Total Rooms	8 Rooms
Stories	2 Stories
Building Area	1,645 sqft Living Area
Gross Area	1,951 sqft
1st Floor Area	684 sqft
Upper Floors Area	961 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 2002
Effective Year Built	Effective 2002
Architectural Style	A-Frame
Exterior Material	Wood Shake/Shingle
Construction Type	Frame
Roof Material	Asphalt
Lot Area	8,451 sqft (0.194 acres)
Garage Type	Attached
Garage Area	306 sqft
Parking Spaces	1 Parking Space
Deck Area	194 sqft

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0503792
Street Address	639 1ST AVE
City	LYONS
State	CO
Zip	80540-5076
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 6 BLK 2 TURNER & REED
Legal Range	70
Legal Township	3N
Legal Section	18
Legal Subdivision	TURNER & REED - LY
Legal Block	2
Legal Lot Number	6
Jurisdiction	BOULDER CO
Township / Civil Division	LONGMONT
Census Block Group	2
Census Block	2031
Census Tract	13601

Owner

Source: Boulder County records, as of October 16, 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 Record
Mailing Address	PO BOX 483, LYONS, CO 80540-0483
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Jun 28, 2004 · Amount on Record
Deed Sale	Jun 28, 2004 · Amount on Record
Deed Document Number	20042601844
Record Updated	Oct 29, 2026

June 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	639 1ST AVE, LYONS, CO 80540-5076
Document Number	0003599663
Instrument Date	Jun 19, 2017
Transaction Type	Mortgage
Record Updated	Jul 4, 2017

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	639 1ST AVE LYONS CO 80540, LYONS, CO 80540

Mortgage

Document Number	0003599663
Date	Jun 23, 2017
Instrument	3599663

Lender

Name	ELEVATIONS CU
Address	BOULDER, CO 80301

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	240 Months
Due	Jun 22, 2037

Interest

Rate Type	Adjustable Rate

Tax Assessment & Valuation

Source: Boulder County assessment roll, as of September 18, 2026

Property Jurisdictions

Type	Name
State	Colorado
County	Boulder County
Municipality	Lyons Town
Unified School District	St. Vrain Valley School District RE 1J (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$51,435 (-0.42%) Land $54 Building $51,381	$826,400 (-) Land $70,800 Building $755,600
2025	$7,027.00 (+10.5%)	$51,650 (-10.79%) Land $4,425 Building $47,225	$826,400 (-4.36%) Land $70,800 Building $755,600
2023	$6,359.00 (+19.53%)	$57,895 (+34.16%) Land $4,114 Building $53,781	$864,100 (+39.17%) Land $61,400 Building $802,700
2022	$5,320.00	$43,153 Land $3,760 Building $39,393	$620,900 Land $54,100 Building $566,800

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 14, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on Record median of 22 policies
Community Rating System	Class 5 (25% premium discount)
Nearby Flood Policies	22 in force
Nearby Flood Claims	56 (1980–2015)
Claims Outside the SFHA	23 of 56
Most Recent Claim	Jun 2015 · Severe Storms, Tornadoes, Flooding, Landslides, And Mudslides
Claims by Event	Severe Storms, Flooding, Landslides, And Mudslides, Sep 2013 · 49 claims

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

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

Wildfire Risk	High above 73% of the US · above 70% of Colorado
Wildfire Likelihood	0.3% annual chance
Exposure	Indirect within ember reach

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	TOWN OF LYONS serves 2,990 people · EPA ID CO0107496
Water Source	Purchased surface water from CITY OF LONGMONT
Last State Inspection	Nov 2022
Lead	Under 1 ppb (2023–2025) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None 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 275 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Lyons Communications Fiber · Cable · Fixed Wireless	1,000 / 1,000
Verizon Fixed Wireless	300 / 20
T-Mobile Fixed Wireless	100 / 20
AT&T Fixed Wireless	100 / 20
Rise Broadband Fixed Wireless	100 / 20