18913 Hidden Valley Rd is a 676 square foot house on a 4,000 square foot lot with 2 bedrooms and 1 bathroom. - it last sold on August 23, 2013 for $216,000. Based on Redfin's Guerneville data, we estimate the home's value is $445,954.
Single-familyProperty Type
1932Year Built
4,000 sq ftLot Size
$660Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$445,954
$230K since sold in August 2013$1,000 since September
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 25.5% higher than the average sale price ($355K) 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.
Permits
Jan 5, 2026 • Final
Building permit with plan check
Perform foundation repairs with no changes to the building footprint.
Remodel
Feb 25, 2025 • Final
Building permit no plan check
Roofing
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
Basement Information
Basement Sq. Ft: 506
Bathroom Information
# of Full Baths: 1
Heating & Cooling
Heating Type: Solar
Room Information
# of Rooms: 4
Exterior
Exterior Information
Physical Condition: Average
Building Style Type: Square Design
Construction Type: Wood/Steel
Building Construction Quality: Poor
Exterior Wall: Wood Siding
Property Information
Subdivision Name: GUERNEWOOD TERRACE
Living Sq. Ft: 676
Ground Floor Sq. Ft: 676
Building Sq. Ft: 676
# of Stories: 1
Legal Description: MAP 46 PG 48 BLK 2 LOT 2
Lot Information
# of Buildings: 1
Land Sq. Ft: 4,000
Legal Lot Number: 2
Legal Block Number: 2
Acres: 0.0918
Zoning Code: R14UA
County Use Description: SINGLE FAM DWELLING
Location Information
Parcel Location Influence: Woodland
Utility Information
Sewer Type: Private
Water Service Type: Public
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 2
Baths: 1.0
Sq. Ft.: 676
Stories: 1.0
Lot Size: 4,000 square feet
Style: Single Family Residential
Year Built: 1932
Year Renovated: 1940
County: Sonoma County
APN: 072050018000
Home facts updated by county records on Aug 13, 2026
Around this home
Schools
Guerneville Elementary School
Charter K-8 • Assigned • 1.6mi
4/10
Analy High School
Public 9-12 • Assigned • 12.2mi
8/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
10/10 Flood Factor
Estimated 80%+ chance of a flood reaching the building in the next 30 years
3/10 Fire Factor
0.15% chance of being in a wildfire in next 30 years
2/10 Heat Factor
7 days above 85° expected this year, 20 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
9/10 Air Factor
17 unhealthy days expected this year, 19 days in 30 years
Provided by First Street
Historical weather
Guerneville, CA • 95446
Average low and high temperatures (°F)
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79
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85
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79
55
76
49
62
45
57
44
Jan
Feb
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Sun exposure
In this area, properties receive around 10.6 hours in
June and 4.9 hours in December, placing it above the
U.S. average for solar exposure.
10.6 hrs
4.9 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$424,000 – $513,000
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