400 Howell Mountain Rd is a 1,104 square foot vacant land on a 4.23 acre lot with 3 bedrooms. - it last sold on September 24, 1996 for $160,000. Based on Redfin's Angwin data, we estimate the home's value is $924,131.
Vacant landProperty Type
1950Year Built
4.23 acresLot Size
$218,471Price/Acres
5 spacesParking
Source:Public Records
Redfin Estimate
$924,131
$764K since sold in September 1996$4,000 since September
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 42.7% higher than the average sale price ($647K) of 6 comparable homes.
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Zoning
AW
AC
Agricultural Watershed District
The AW district classification is intended to be applied in those areas of the county where the predominant use is agriculturally oriented, where watershed areas, reservoirs and floodplain tributaries are located, where development would adversely impact on all such uses, and where the protection of agriculture, watersheds and floodplain tributaries from fire, pollution and erosion is essential to the general health, safety and welfare.
Zone overlays
Airport Compatibility Combination District
Permitted uses
Include but are not limited to:
Agriculture
Housing-Single unit
Housing-Senior
Housing-Other
Office
Recreation
Communications tower
Property details
Interior
Fireplace Information
Has Fireplace
Room Information
# of Rooms: 5
Exterior
Exterior Information
Construction Type: Wood
Building Construction Quality: Fair
Property Information
Subdivision Name: LA JOTA RANCHO
Living Sq. Ft: 1,104
Building Sq. Ft: 1,104
Legal Description: LA JOTA RHO LOT 3
Lot Information
# of Buildings: 1
Land Sq. Ft: 184,259
Legal Lot Number: 3
Acres: 4.23
Zoning Code: AW:AC
County Use Description: RURAL RESID < 5 AC
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 3
Baths: —
Sq. Ft.: 1,104
Stories: —
Lot Size: 4.23 acres
Style: Vacant Land
Year Built: 1950
Year Renovated: 1950
County: Napa County
APN: 24102009000
Home facts updated by county records on Oct 8, 2026
Around this home
Schools
Howell Mountain Elementary School
Public K-8 • Assigned • 0.6mi
4/10
Saint Helena High School
Public 9-12 • Assigned • 5.9mi
8/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
6/10 Fire Factor
8% chance of being in a wildfire in next 30 years
3/10 Heat Factor
7 days above 95° expected this year, 14 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
10/10 Air Factor
28 unhealthy days expected this year, 28 days in 30 years
Provided by First Street
Historical weather
Angwin, CA • 94508
Average low and high temperatures (°F)
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86
58
79
57
72
51
58
44
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43
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Sun exposure
In this area, properties receive around 11.7 hours in
June and 4.9 hours in December, placing it above the
U.S. average for solar exposure.
11.7 hrs
4.9 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$878,000 – $1.06M
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