18999 High Rd is a 3,265 square foot house on a 8.58 acre lot with 3 bedrooms and 2.5 bathrooms. - it last sold on May 26, 1999 for $800,000. Based on Redfin's Sonoma data, we estimate the home's value is $2,183,795.
Single-familyProperty Type
1980Year Built
8.58 acresLot Size
$669Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$2,183,795
$1.4M since sold in May 1999$114K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 69.7% higher than the average sale price ($1.29M) 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
Aug 13, 2025 • Final
Building permit with plan check
Electrical
New construction
Solar
Jun 2, 2025 • Final
Building permit with plan check
Install a ground-mounted solar panel system on a single-family home.
Electrical
Solar
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: 987
Basement Finish: Completely Finished
Bathroom Information
# of Full Baths: 2
# of 1/2 Baths: 1
Heating & Cooling
Heating Fuel Type: Electric
Heating Type: Heat Pump
Fireplace Information
# of Fireplaces: 2
Has Fireplace
Room Information
# of Rooms: 8
Exterior
Exterior Information
Physical Condition: Good
Foundation Type: Slab
Building Style Type: L-Shape
Construction Type: Wood/Steel
Building Construction Quality: Good
Exterior Wall: Wood Shake/Shingle
View Information
View: Good
Property Information
Living Sq. Ft: 3,265
Ground Floor Sq. Ft: 2,370
Building Sq. Ft: 3,265
# of Stories: 2
Legal Description: MAP A5 169
Parking & Garage Information
# of Parking Spaces: 3
Garage/Parking Sq. Ft: 660
Lot Information
# of Buildings: 1
Land Sq. Ft: 373,745
Legal Lot Number: 3
Acres: 8.58
Zoning Code: RRD100
County Use Description: RURAL RESID-1 RESID
Utility Information
Sewer Type: Septic
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 3
Baths: 2.5
Sq. Ft.: 3,265
Stories: 2.0
Lot Size: 8.58 acres
Style: Single Family Residential
Year Built: 1980
Year Renovated: 1981
County: Sonoma County
APN: 127041005000
Home facts updated by county records on Aug 13, 2026
Around this home
Schools
Sassarini Elementary School
Public K-5 • Assigned • 1.8mi
3/10
Altimira Middle School
Public 6-8 • Assigned • 2.2mi
2/10
Sonoma Valley High School
Public 9-12 • Assigned • 2.2mi
7/10
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
4/10 Fire Factor
3% chance of being in a wildfire in next 30 years
3/10 Heat Factor
2 days above 95° expected this year, 5 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
9/10 Air Factor
19 unhealthy days expected this year, 19 days in 30 years
Provided by First Street
Historical weather
Sonoma, CA • 95476
Average low and high temperatures (°F)
62
40
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42
72
46
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47
78
51
83
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82
54
89
55
86
56
80
51
65
46
59
43
Jan
Feb
Mar
Apr
May
Jun
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Aug
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Oct
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Dec
Sun exposure
In this area, properties receive around 11.3 hours in
June and 4.9 hours in December, placing it above the
U.S. average for solar exposure.
11.3 hrs
4.9 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$2.08M – $2.51M
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