6421 Sonoma Mountain Rd is a 2,406 square foot house on a 2.2 acre lot with 1 bedroom and 2.5 bathrooms. - it last sold on March 07, 2007 for $969,000. Based on Redfin's Santa Rosa data, we estimate the home's value is $1,473,638.
Single-familyProperty Type
2007Year Built
2.2 acresLot Size
$612Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$1,473,638
$505K since sold in March 2007$31K since October
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 29.5% higher than the average sale price ($1.14M) 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
DA B6 20
SR
RC 50'
Diverse Agriculture B6 Combining District 20 Acres
DA: Enhances and protects land where soil, climate, and water conditions support farming but where small acreage intensive farming and part-time farming activities are predominant, and where farming may not be the principal occupation of the farmer; Implement the diverse agriculture land use category of the general plan and the policies of the Agricultural Resource Element.; B6: To specify residential density and/or minimum parcel or lot size for a particular parcel, lot or area.
Zone overlays
Scenic Resources Combining District
Riparian Corridor Combining Zone
Permitted uses
Include but are not limited to:
Agriculture
Equestrian facility
Greenhouse / nursery
Day care facility
Housing-Group
Housing-Single unit
Theater / performing arts facility
Agriculture-Cropland
Park & open space
Timberland
Property details
Interior
Bathroom Information
# of Full Baths: 2
# of 1/2 Baths: 1
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Room Information
# of Rooms: 6
Exterior
Exterior Information
Building Style Type: U-Shape
Building Construction Quality: Good
Property Information
Living Sq. Ft: 2,406
Building Sq. Ft: 3,006
# of Stories: 2
Legal Description: 2004 FM 055-110-037 & 038 VOL COM
Parking & Garage Information
Parking Type: Attached Garage
Garage/Parking Sq. Ft: 1,080
Garage / Carport Type: Attached
Lot Information
# of Buildings: 1
Land Sq. Ft: 95,832
Acres: 2.2
County Use Description: RURAL RESID-1 RESID
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 1
Baths: 2.5
Sq. Ft.: 2,406
Stories: 2.0
Lot Size: 2.2 acres
Style: Single Family Residential
Year Built: 2007
Year Renovated: 2008
County: Sonoma County
APN: 055110039000
Home facts updated by county records on Oct 28, 2026
Around this home
Schools
K - 12
Preschool & daycare
Altimira Middle School
Public 6-8 • Assigned • 5.7mi
2/10
Sonoma Valley High School
Public 9-12 • Assigned • 8.7mi
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
2% chance of being in a wildfire in next 30 years
2/10 Heat Factor
7 days above 95° expected this year, 15 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, 20 days in 30 years
Provided by First Street
Historical weather
Santa Rosa, CA • 95404
Average low and high temperatures (°F)
63
41
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44
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51
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82
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86
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82
57
74
51
65
46
60
44
Jan
Feb
Mar
Apr
May
Jun
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Aug
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Sun exposure
In this area, properties receive around 11.2 hours in
June and 4.9 hours in December, placing it above the
U.S. average for solar exposure.
11.2 hrs
4.9 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$1.40M – $1.70M
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