509 Grandview Rd is a 3,383 square foot house on a 1.87 acre lot with 5 bedrooms and 4 bathrooms. - it last sold on October 31, 2016 for $1,258,000. Based on Redfin's Sebastopol data, we estimate the home's value is $1,684,559.
Single-familyProperty Type
1977Year Built
1.87 acresLot Size
$498Est. Price/Sq.Ft.
2 spacesParking
Source:Public Records
Redfin Estimate
$1,684,559
$427K since sold in October 2016$10K since October
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 0.1% higher than the average sale price ($1.68M) 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
Jan 3, 2023 • Final
Building permit with plan check
Electrical
Ev charger
Solar
Dec 9, 2022 • Final
Building permit with plan check
ADU
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
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Room Information
# of Rooms: 4
Exterior
Exterior Information
Building Style Type: Square Design
Construction Type: Wood/Steel
Building Construction Quality: Average
Property Information
Living Sq. Ft: 3,393
Building Sq. Ft: 3,899
# of Stories: 1
Legal Description: 1972 FORM 77-120-19 PT TO 24 OR 2577-720 FILE
Parking & Garage Information
Parking Type: Attached Garage
Garage/Parking Sq. Ft: 506
Garage / Carport Type: Attached
Lot Information
# of Buildings: 1
Land Sq. Ft: 81,457
Legal Lot Number: B
Acres: 1.87
Zoning Code: RR5
County Use Description: RURAL RESIDENTIAL-SFD W/GRANNY
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 5
Baths: 4.0
Sq. Ft.: 3,383
Stories: 1.0
Parking Spaces: 2
Basement: No
Accessible: No
Lot Size: 1.87 acres
Style: Single Family Residential
Year Built: 1977
Year Renovated: 1977
County: Sonoma County
APN: 077120023000
HOA Dues: —
Garage: Yes
Features: Views
Home facts updated by owner on Sep 16, 2026
Around this home
Schools
K - 12
Preschool & daycare
Apple Blossom School
Public K-5 • Assigned • 1.6mi
7/10
Twin Hills Charter Middle School
Charter 6-8 • Assigned • 2.7mi
9/10
Analy High School
Public 9-12 • Assigned • 2.9mi
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
3/10 Heat Factor
7 days above 89° expected this year, 17 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
7/10 Air Factor
12 unhealthy days expected this year, 12 days in 30 years
Provided by First Street
Historical weather
Sebastopol, CA • 95472
Average low and high temperatures (°F)
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82
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79
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71
51
63
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57
44
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Sun exposure
In this area, properties receive around 10.8 hours in
June and 4.9 hours in December, placing it above the
U.S. average for solar exposure.
10.8 hrs
4.9 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$1.60M – $1.94M
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