665 Riverside Dr, Lyons, CO 80540 Property Records

Boulder County property record for 665 Riverside Dr, Lyons, CO 80540 · Last verified June 2026

Property Highlights

Property Type	Residential > Single Family > Home
Bedrooms	1 Beds
Bathrooms	1.5 Baths
Architecture Style	Ranch
Year Built	Built 1967
Square Footage	480 sqft Living Area
Lot Size	14,135 sqft (0.325 acres)
Last Sale	$370,000 (2023)
Tax Bill	$1,548.00 (2025)

Property Details

APN / Parcel Number

Primary APN	`1199-34-3-06-007`
Alternative APNs	`R0053606` `0053606`

Interior

Bedrooms	1 Beds
Full Baths	1.5 Baths
Partial Baths	1 Partial Baths
Total Rooms	3 Rooms
Building Area	480 sqft Living Area
1st Floor	480 sqft 1st Floor
Stories	1 Stories
Interior Structure	Wallboard/Drywall Interior Structure

Exterior

Year Built	Built 1952
Effective Year Built	Effective 1967
Architectural Style	Ranch Style
Exterior Material	Wood Shingle Exterior
Construction Type	Frame Construction
Lot Area	14,135 sqft (0.325 acres)

Location & Zoning

Account Number	R0053606
Street Address	665 RIVERSIDE DR
City	LYONS
State	CO
Zip	80540-8974
Property Usage	Residential Property Usage
Type	Residential > Single Family > Home
Legal Description	LOT 5 BLK 2 RIVERSIDE ALPINE ID 53931 COMBINED HERE PER OWNERS REQUEST 1989
Legal Range	72
Legal Township	3N
Legal Section	34
Legal Subdivision	RIVERSIDE ALPINE - MT
Legal Block	2
Legal Lot Number	5
Jurisdiction	BOULDER CO
Minor Civil Division	UPPER ST. VRAIN
Census Blockgroup	1
Census Block	1047
Census Tract	13602

Owner

Source: Boulder County records · APN 1199-34-3-06-007

Assessment roll updated June 15, 2026 · Last verified June 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	PO BOX 266, ALLENSPARK, CO 80510-0266
Owner Type	Owner is a Company
Vesting	Owner is a Trust, Revocable Trust

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Known Transactions	Last Sale Amount on Aug 08, 2023 Deed Sale Price on Aug 08, 2023 Prior Sale Amount on Mar 09, 1989
Deed Doc Number	20234017510
Prior Transfer Date	Mar 28, 1997
Prior Transfer Doc	0001686979
Record Refreshed	Sep 20, 2026

August 2023: Special Warranty Deed, Transfer

Document Type	Special Warranty Deed
Jurisdiction	BOULDER CO
Recording Date	Aug 08, 2023
Property Address	665 RIVERSIDE DR, LYONS, CO 80540
Document Number	0004017510
Instrument Date	Jul 25, 2023
Instrument	4017510
Transaction Type	Transfer
Record Updated	Sep 06, 2023

Transaction

Amount	Amount Recorded
Tax	$37.00
Amount Accuracy	Full Amount Stated
Additional	Arms Length Transaction

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Revocable Trust
Address	31162 466TH AVE, VERMILLION, SD 57069-6817

Tax Assessment & Valuation

Source: Boulder County records · Assessment roll updated June 15, 2026 · Last verified June 2026

Property Jurisdictions

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

Tax Bill & Assessment History

Assessed value is set for property tax purposes, not a market price estimate; it is a fraction of this property's market value.

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$17,160 (+8.8%) Land $2,713 Building $14,447	$252,349 (-) Land $39,900 Building $212,449
2025	$1,548.00 (+39.21%)	$15,772 (-3.84%) Land $2,494 Building $13,278	$252,349 (+3.09%) Land $39,900 Building $212,449
2023	$1,112.00 (-4.96%)	$16,401 (+28.97%) Land $2,057 Building $14,344	$244,793 (+33.78%) Land $30,700 Building $214,093
2022	$1,170.00	$12,717 Land $2,078 Building $10,639	$182,976 Land $29,900 Building $153,076