21301 Siri Rd is a 1,820 square foot house on a 4 acre lot with 2 bedrooms and 2.5 bathrooms. - it last sold on November 20, 1989 for $255,000. Based on Redfin's Guerneville data, we estimate the home's value is $1,339,991.
Single-familyProperty Type
1986Year Built
4 acresLot Size
$736Est. Price/Sq.Ft.
1 garage spacesParking
Source:Public Records
Redfin Estimate
$1,339,991
$1.1M since sold in November 1989$19K since October
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 38.6% higher than the average sale price ($967K) 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 and permits
Zoning
Permits
RRD B6 160
SR
Resources and Rural Development - B6 Combining District - One Dwelling per 160 Acres
Protects lands needed for: Commercial timber production, geothermal production, aggregate resources production; Watershed, fish and wildlife habitat, biotic resources; and Agricultural production activities not subject to the agricultural resources element of the general plan. Allows very low-density residential development and recreational and visitor-serving uses where compatible with resource use and available public services; and Implements the resources and rural development land use category of the general plan.; B Combining District: to specify residential density and/or minimum parcel or lot size for a particular parcel, lot or area.
Zone overlays
Scenic Resources Combining District
Permitted uses
Include but are not limited to:
Agriculture
Greenhouse / nursery
Livestock production
Housing-Group
Housing-Single unit
Nov 25, 2020 • Final
Building permit with plan check
Install a new generator.
Generator
Apr 26, 2017 • Final
Building permit no plan check
HVAC
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: 2
# of 1/2 Baths: 1
Heating & Cooling
Heating Type: Forced Air
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Room Information
# of Rooms: 6
Exterior
Exterior Information
Physical Condition: Good
Construction Type: Wood/Steel
Building Construction Quality: Average
Property Information
Living Sq. Ft: 1,820
Ground Floor Sq. Ft: 784
Building Sq. Ft: 1,820
# of Stories: 2
Parking & Garage Information
Parking Type: Detached Garage
Garage/Parking Sq. Ft: 576
Garage / Carport Type: Detached
Lot Information
# of Buildings: 1
Land Sq. Ft: 174,240
Acres: 4
Zoning Code: RRD160
County Use Description: RURAL RESID-1 RESID
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 2
Baths: 2.5
Sq. Ft.: 1,820
Stories: 2.0
Lot Size: 4 acres
Style: Single Family Residential
Year Built: 1986
Year Renovated: 2000
County: Sonoma County
APN: 097100005000
Home facts updated by county records on Aug 13, 2026
Around this home
Schools
K - 12
Preschool & daycare
Monte Rio Elementary School
Public K-8 • Assigned • 1.2mi
7/10
Analy High School
Public 9-12 • Assigned • 12.0mi
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
3/10 Fire Factor
0.15% chance of being in a wildfire in next 30 years
1/10 Heat Factor
14 hot days expected this year, 3 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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71
50
62
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44
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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
$1.27M – $1.54M
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