340 Seward St, Lyons, CO 80540 Property Records

Boulder County property record for 340 Seward St, Lyons, CO 80540 · Last verified June 2026

Property Highlights

Property Type	Residential > Single Family > Home
Bedrooms	2 Beds
Bathrooms	1 Baths
Year Built	Built 2005
Square Footage	816 sqft Living Area
Lot Size	10,307 sqft (0.237 acres)
Garage	Attached, 338 sqft
Last Sale	$475,000 (2018)
Tax Bill	$5,606.00 (2025)

Property Details

APN / Parcel Number

Primary APN	`1203-18-1-03-015`
Alternative APNs	`R0067719` `0067719`

Interior

Bedrooms	2 Beds
Full Baths	1 Baths
Total Rooms	5 Rooms
Building Area	816 sqft Living Area
Gross Area	1,634 sqft Gross Area
1st Floor	816 sqft 1st Floor
Basement Area	480 sqft Basement
Stories	1 Stories
Interior Structure	Wallboard/Drywall Interior Structure

Exterior

Year Built	Built 1974
Effective Year Built	Effective 2005
Architectural Style	Ranch Style
Exterior Material	Wood Shingle Exterior
Construction Type	Frame Construction
Roof Material	Asphalt Roof
Lot Area	10,307 sqft (0.237 acres)
Parking Spaces	1 Parking Spaces
Garage Type	Attached Garage
Garage Area	338 sqft Garage

Utilities and HVAC

Heating System	Forced Air with Air Conditioning Heating

Location & Zoning

Account Number	R0067719
Street Address	340 SEWARD ST
City	LYONS
State	CO
Zip	80540-5047
Property Usage	Residential Property Usage
Type	Residential > Single Family > Home
Legal Description	LOT 2 BLK 5 NORTONVILLE
Legal Range	70
Legal Township	3N
Legal Section	18
Legal Subdivision	NORTONVILLE - LY
Legal Block	5
Legal Lot Number	2
Jurisdiction	BOULDER CO
Minor Civil Division	LONGMONT
Census Blockgroup	2
Census Block	2032
Census Tract	13601

Owner

Source: Boulder County records · APN 1203-18-1-03-015

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 185, LYONS, CO 80540-0185
Owner Type	Owner is a Company
Vesting	Owner is a Trust, Living Trust

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Known Transactions	Last Sale Amount on Mar 20, 2018 Deed Sale Price on Mar 20, 2018 Prior Sale Amount on Dec 18, 2012
Deed Doc Number	20183646036
Record Refreshed	Sep 20, 2026

March 2018: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	BOULDER CO
Recording Date	Mar 20, 2018
Property Address	340 SEWARD ST, LYONS, CO 80540-5047
Document Number	0003646036
Instrument Date	Mar 16, 2018
Instrument	3646036
Transaction Type	Transfer
Record Updated	Apr 03, 2018
Title Company	LAND TITLE GUARANTEE

Transaction

Amount	Amount Recorded
Tax	$47.50
Amount Accuracy	Confirmed
Additional	Arms Length Transaction

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Personal Trust
Address	340 SEWARD ST LYONS CO 80540, LYONS, CO 80540

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
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, not market price estimates; both are a fraction of this property's market value.

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$44,826 (+8.8%) Land $5,372 Building $39,454	$659,200 (-) Land $79,000 Building $580,200
2025	$5,606.00 (+4.3%)	$41,201 (-16.77%) Land $4,938 Building $36,263	$659,200 (-10.77%) Land $79,000 Building $580,200
2023	$5,375.00 (+30.87%)	$49,500 (+48.6%) Land $4,583 Building $44,917	$738,800 (+54.14%) Land $68,400 Building $670,400
2022	$4,107.00	$33,312 Land $4,198 Building $29,114	$479,300 Land $60,400 Building $418,900