428 4th Ave, Lyons, CO 80540 Property Records

Boulder County property record for 428 4th Ave, Lyons, CO 80540 · Last verified July 2026

Property Highlights

Property Type	Residential > Multi-Unit > Multi-Family Dwellings
Bedrooms	4 Beds
Bathrooms	2 Baths
Architecture Style	Ranch
Year Built	Built 1978
Square Footage	1,752 sqft Living Area
Lot Size	6,805 sqft (0.156 acres)
Occupancy	Owner Occupied
Last Sale	$5,000 (1989)

Property Details

APN / Parcel Number

Primary APN	`1203-18-4-17-014`
Alternative APNs	`R0075680` `0075680`

Interior

Bedrooms	4 Beds
Full Baths	2 Baths
Total Rooms	8 Rooms
Building Area	1,752 sqft Living Area
1st Floor	1,752 sqft 1st Floor
Stories	1 Stories
Interior Structure	Wallboard/Drywall Interior Structure

Exterior

Year Built	Built 1978
Effective Year Built	Effective 1978
Architectural Style	Ranch Style
Exterior Material	Brick Veneer Exterior
Construction Type	Frame Construction
Roof Material	Asphalt Roof
Lot Area	6,805 sqft (0.156 acres)
Porch	Porch
Porch Area	240 sqft Porch

Utilities and HVAC

Heating Fuel	Electric Heating Fuel

Location & Zoning

Account Number	R0075680
Street Address	428 4TH AVE
City	LYONS
State	CO
Zip	80540
Property Usage	Residential Property Usage
Type	Residential > Multi-Unit > Multi-Family Dwellings
Legal Description	N 70 FT OF LOTS 11 & 12 BLK 25 LYONS
Legal Range	70
Legal Township	3N
Legal Section	18
Legal Subdivision	LYONS - LY
Legal Block	25
Legal Lot Number	11
Jurisdiction	BOULDER CO
Minor Civil Division	LONGMONT
Census Blockgroup	3
Census Block	3021
Census Tract	13601

Owner

Source: Boulder County records · APN 1203-18-4-17-014

Assessment roll updated June 15, 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 Owner on File
Mailing Address	428 4TH AVE, LYONS, CO 80540
Occupancy	Owner Occupied
Owner Type	Owner is an Individual, Couple or Unincorporated Entity

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Known Transactions	Last Sale Amount on Sep 28, 1989 Deed Sale Price on Sep 28, 1989 Prior Sale Amount on Dec 01, 1978
Deed Doc Number	19891005622
Last Transfer Date	Jul 18, 2025
Transfer Doc	0004095588
Record Refreshed	Sep 20, 2026

July 2025: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	BOULDER CO
Recording Date	Jul 21, 2025
Property Address	428 4TH AVE, LYONS, CO 80540-5058
Document Number	0004095588
Map Reference	MB 4 PG 48
Instrument Date	Jul 18, 2025
Instrument	4095588
Transaction Type	Transfer
Record Updated	Feb 09, 2026

Transaction

Tax	$0.00
Amount Accuracy	Zero or No Consideration Stated
Additional	Quitclaim Document Interfamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	428 4TH AVE # 430, 430, LYONS, CO 80540-5058

Tax Assessment & Valuation

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

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
2026		$49,123 (+8.8%) Land $4,386 Building $44,737	$722,400 (-) Land $64,500 Building $657,900
2025	$5,293.00 (+13.05%)	$45,150 (-9.27%) Land $4,031 Building $41,119	$722,400 (-2.73%) Land $64,500 Building $657,900
2024	$4,682.00 (+1.36%)
2023	$4,619.00 (+4.05%)	$49,761 (+15.84%) Land $3,745 Building $46,016	$742,700 (+17.57%) Land $55,900 Building $686,800
2022	$4,439.00	$42,955 Land $3,352 Building $39,603	$631,700 Land $49,300 Building $582,400