20100 Hartmann Rd is a 1,214 square foot house on a 5.04 acre lot with 3 bedrooms and 1.5 bathrooms. - it last sold on September 15, 1989 for $155,000. Based on Redfin's Hidden Valley Lake data, we estimate the home's value is $427,970.
Single-familyProperty Type
2017Year Built
5.04 acresLot Size
$353Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$427,970
$273K since sold in September 1989$12K since July
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 26.6% higher than the average sale price ($338K) of 5 comparable homes.
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Zoning and permits
Zoning
Permits
RR
Rural Residential District
To provide for single-family residential development in a semi-rural setting along with limited agriculture. The following regulations shall apply in all RR districts.
Permitted uses
Include but are not limited to:
Agriculture
Greenhouse / nursery
Livestock production
Housing-Single unit
Housing-Multiple units
Housing-Other
Processing
Agriculture-Cropland
Housing-Mobile home park
Mar 13, 2020 • Final
Solar
Electrical
Solar
May 2, 2019 • Final
Residential new
Install a new generator.
Generator
Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.
Property details
Interior
Bathroom Information
# of Full Baths: 1
# of 1/2 Baths: 1
Room Information
# of Rooms: 6
Exterior
Exterior Information
Construction Type: Steel
Building Construction Quality: Average
Property Information
Subdivision Name: HIDDEN VALLEY RHOS
Living Sq. Ft: 1,214
Building Sq. Ft: 1,214
Parking & Garage Information
# of Parking Spaces: 1
Lot Information
# of Buildings: 1
Land Sq. Ft: 219,542
Legal Lot Number: 1
Legal Block Number: 2
Acres: 5.04
Zoning Code: RR
County Use Description: RESID-SGL FAM RESIDENCE
Financial
Assessor Information
Assessment Year: 2025
Public facts
Beds: 3
Baths: 1.5
Sq. Ft.: 1,214
Stories: —
Lot Size: 5.04 acres
Style: Single Family Residential
Year Built: 2017
Year Renovated: —
County: Lake County
APN: 144051060000
Home facts updated by county records on Aug 7, 2026
Around this home
Schools
Coyote Valley Elementary School
Public K-6 • Assigned • 1.3mi
5/10
Middletown Middle School
Public 6-8 • Assigned • 5.2mi
5/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
8/10 Flood Factor
Estimated 80%+ chance of a flood reaching the building in the next 30 years
7/10 Fire Factor
24% chance of being in a wildfire in next 30 years
6/10 Heat Factor
7 days above 101° expected this year, 16 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
10/10 Air Factor
34 unhealthy days expected this year, 35 days in 30 years
Provided by First Street
Historical weather
Hidden Valley Lake, CA • 95467
Average low and high temperatures (°F)
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79
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88
56
78
49
64
42
61
40
Jan
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Sun exposure
In this area, properties receive around 11.5 hours in
June and 4.9 hours in December, placing it above the
U.S. average for solar exposure.
11.5 hrs
4.9 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$407,000 – $493,000
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