491 Casswall St, Napa, CA 94558 Property Records

Napa County property record for 491 Casswall St, Napa, CA 94558

Property Summary

Property Type	Duplex
Details	6 bd · 4 ba · 3,130 sqft · built 1975
Lot Size	0.7 acres (30,492 sqft)
Owner	Company Name on Record
Last Sale	$975,000 (Dec 2005)
Tax Bill	$14,594 (2026)
Deeds & Mortgages	Jan 2024 Transfer
Flood Zone	Zone X (minimal risk)
APN	`004-400-010-000`

Property Details

APN / Parcel Number

Primary APN	`004-400-010-000`
Alternative APNs	`004-400-010` `00440010`

Interior

Bedrooms	6 Beds
Full Baths	4 Baths
Total Rooms	12 Rooms
Stories	1 Story
Building Area	3,130 sqft Living Area
1st Floor Area	2,516 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1975
Effective Year Built	Effective 1980
Architectural Style	Duplex Single
Exterior Material	Stucco
Construction Type	Wood
Roof Material	Composition Shingle
Lot Area	30,492 sqft (0.7 acres)
Garage Type	Attached
Garage Area	437 sqft
Parking Spaces	2 Parking Spaces
Total Buildings	2 Buildings

Utilities, Heating & Cooling

Cooling System	HVAC
Heating System	Central

Location & Zoning

Old Parcel Number	004-400-010
Street Address	491 CASSWALL ST
City	NAPA
State	CA
Zip	94558-5905
Property Category	Residential
Property Type	Residential > Multi-Unit > Duplex
Local Zoning Code	RL6
Legal Description	PCL B MAP NO 3017 9P/M64
Legal Subdivision	LANDS OF JOHN A LEMON ET UX
Jurisdiction	NAPA CA
Township / Civil Division	NAPA
Census Block Group	2
Census Block	2001
Census Tract	200802

Owner

Source: Napa County records, as of October 21, 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 Record
Mailing Address	455 CASSWALL ST, NAPA, CA 94558-5905
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Dec 20, 2005 · Amount on Record
Deed Sale	Dec 20, 2005 · Amount on Record
Prior Sale	Aug 3, 2001 · Amount on Record
Deed Document Number	200551557
Last Transfer Date	Jan 18, 2024
Transfer Doc	0000001047
Record Updated	Oct 29, 2026

January 2024: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	NAPA CA
Recording Date	Jan 24, 2024
Property Address	491 CASSWALL ST, NAPA, CA 94558-5905
Document Number	0000001048
Map Reference	MB 9 PG 64
Instrument Date	Jan 19, 2024
Instrument	2024-0001048
Transaction Type	Transfer
Record Updated	Feb 1, 2024

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Family Trust
Address	455 CASSWALL ST, NAPA, CA 94558-5905

Tax Assessment & Valuation

Source: Napa County assessment roll, as of October 21, 2026

Property Jurisdictions

Type	Name
State	California
County	Napa County
Municipality	Napa City
Unified School District	Napa Valley Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026	$14,594.00 (+0.36%)	$1,155,000 (-) Land $570,000 Building $585,000	$1,155,000 (-) Land $570,000 Building $585,000
2025	$14,542.00 (+1.33%)	$1,155,000 (-) Land $570,000 Building $585,000	$1,155,000 Land $570,000 Building $585,000
2023	$14,351.00 (+8.37%)	$1,155,000 Land $570,000 Building $585,000
2022	$13,243.00

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

Source: FEMA National Flood Hazard Layer, effective June 25, 2024 · 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
Community Rating System	Class 7 (15% premium discount)
Nearby Flood Policies	1 in force

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	Low lower than 80% of the US · lower than 88% of California
Wildfire Likelihood	0.02% annual chance
Exposure	Direct burnable vegetation

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	CITY OF NAPA serves 84,804 people · EPA ID CA2810003
Water Source	Surface water
Lead	Under 1 ppb (2022–2024) 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 117 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	1,200 / 35
Verizon Fixed Wireless	300 / 20

May also be available: AT&T, Valley Internet.

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