1521 Willowside Rd is a 2,226 square foot house on a 4.75 acre lot with 4 bedrooms and 2 bathrooms. - it last sold on February 25, 1994 for $268,000. Based on Redfin's Santa Rosa data, we estimate the home's value is $1,089,374.
Single-familyProperty Type
1943Year Built
4.75 acresLot Size
$489Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$1,089,374
$821K since sold in February 1994$9,000 since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 3.3% lower than the average sale price ($1.13M) 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.
Permits
Aug 7, 2025 • Final
Building permit with plan check
Electrical
Solar
Jul 25, 2025 • Final
Building permit no plan check
Remove and replace the roof on a barn using fire-rated asphalt composition shingles.
Roofing
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
Heating & Cooling
Heating Fuel Type: Gas
Heating Type: Wall Furnace
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Room Information
# of Rooms: 7
Exterior
Exterior Information
Physical Condition: Good
Construction Type: Wood/Steel
Building Construction Quality: Average
Property Information
Living Sq. Ft: 2,226
Building Sq. Ft: 3,111
# of Stories: 1
Legal Description: MAP F3 127
Parking & Garage Information
# of Parking Spaces: 2
Parking Type: Detached Garage
Garage/Parking Sq. Ft: 2,400
Garage / Carport Type: Detached
Lot Information
# of Buildings: 1
Land Sq. Ft: 206,910
Acres: 4.75
Zoning Code: RR3
County Use Description: RURAL RESID-1 RESID
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 4
Baths: 2.0
Sq. Ft.: 2,226
Stories: 1.0
Lot Size: 4.75 acres
Style: Single Family Residential
Year Built: 1943
Year Renovated: 1990
County: Sonoma County
APN: 057130002000
Home facts updated by county records on Aug 13, 2026
Around this home
Schools
Jack London Elementary School
Public K-6 • Assigned • 2.9mi
5/10
Hilliard Comstock Middle School
Public 7-8 • Assigned • 3.3mi
1/10
Piner High School
Public 9-12 • Assigned • 2.2mi
4/10
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
1/10 Fire Factor
Unlikely to be in a wildfire in next 30 years
4/10 Heat Factor
7 days above 90° expected this year, 16 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
9/10 Air Factor
18 unhealthy days expected this year, 20 days in 30 years
Provided by First Street
Historical weather
Santa Rosa, CA • 95401
Average low and high temperatures (°F)
63
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42
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77
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85
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83
54
79
49
65
44
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42
Jan
Feb
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May
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Sun exposure
In this area, properties receive around 11.1 hours in
June and 4.9 hours in December, placing it above the
U.S. average for solar exposure.
11.1 hrs
4.9 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$1.03M – $1.25M
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