3470 Franz Valley Rd is a 400 square foot house on a 4.32 acre lot with 3 bathrooms. - it last sold on May 26, 1999 for $375,000. Based on Redfin's Santa Rosa data, we estimate the home's value is $912,700.
Single-familyProperty Type
1957Year Built
4.32 acresLot Size
$2,282Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$912,700
$538K since sold in May 1999$23K since July
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 21.2% higher than the average sale price ($753K) 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
Apr 23, 2019 • Final
Building permit with plan check
New construction
Oct 29, 2018 • Final
Field review - building
New construction
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: 3
Exterior
Exterior Information
Construction Type: Wood/Steel
Property Information
Living Sq. Ft: 400
Building Sq. Ft: 400
Legal Description: MAP C2 13
Parking & Garage Information
Parking Type: Carport
Garage/Parking Sq. Ft: 868
Garage / Carport Type: Carport
Lot Information
# of Buildings: 1
Land Sq. Ft: 188,179
Acres: 4.32
Zoning Code: RRD100
County Use Description: VAC RURAL W/IMPV
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: —
Baths: 3.0
Sq. Ft.: 400
Stories: —
Lot Size: 4.32 acres
Style: Single Family Residential
Year Built: 1957
Year Renovated: 1957
County: Sonoma County
APN: 028040007000
Home facts updated by county records on Aug 13, 2026
Around this home
Schools
Whited Elementary Charter School
Charter K-6 • Assigned • 7.1mi
6/10
Rincon Valley Middle School
Public 7-8 • Assigned • 6.0mi
5/10
Maria Carrillo High School
Public 9-12 • Assigned • 6.1mi
9/10
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
5/10 Fire Factor
6% chance of being in a wildfire in next 30 years
3/10 Heat Factor
7 days above 97° expected this year, 14 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
10/10 Air Factor
22 unhealthy days expected this year, 24 days in 30 years
Provided by First Street
Historical weather
Santa Rosa, CA • 95404
Average low and high temperatures (°F)
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79
51
65
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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
$868,000 – $1.05M
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