18250 Old Monte Rio Rd is a 589 square foot house on a 4,000 square foot lot with 1 bedroom and 1 bathroom. - it last sold on September 08, 1983 for $48,000. Based on Redfin's Guerneville data, we estimate the home's value is $341,579.
Single-familyProperty Type
1952Year Built
4,000 sq ftLot Size
$580Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$341,579
$294K since sold in September 1983$3,000 since July
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 8.5% lower than the average sale price ($373K) 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
Jun 11, 2016 • Final
Building history record
Work on electrical systems.
Electrical
Jun 11, 2016 • Final
Building history record
Work on a retaining wall.
Grading
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
Room Information
# of Rooms: 2
Exterior
Exterior Information
Building Style Type: L-Shape
Construction Type: Wood/Steel
Building Construction Quality: Poor
Property Information
Subdivision Name: RUSSIAN RIVER HEIGH
Living Sq. Ft: 589
Ground Floor Sq. Ft: 589
Building Sq. Ft: 589
# of Stories: 1
Legal Description: MAP 18 PG 24 BLK 33 LOT 26
Lot Information
# of Buildings: 1
Land Sq. Ft: 4,000
Legal Lot Number: 26
Legal Block Number: 33
Acres: 0.0918
Zoning Code: RRD160
County Use Description: SINGLE FAM DWELLING
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 1
Baths: 1.0
Sq. Ft.: 589
Stories: 1.0
Lot Size: 4,000 square feet
Style: Single Family Residential
Year Built: 1952
Year Renovated: —
County: Sonoma County
APN: 072250003000
Home facts updated by county records on Aug 13, 2026
Around this home
Schools
Guerneville Elementary School
Charter K-8 • Assigned • 2.2mi
4/10
Analy High School
Public 9-12 • Assigned • 11.4mi
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
2/10 Heat Factor
7 days above 86° 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)
59
40
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43
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45
74
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76
51
85
53
80
53
76
49
62
45
57
44
Jan
Feb
Mar
Apr
May
Jun
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Aug
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Dec
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
$325,000 – $393,000
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