540 Napa Rd is a 1,026 square foot house on a 0.72 acre lot with 2 bedrooms and 1 bathroom. - it last sold on January 01, 1979 for $69,000. Based on Redfin's Sonoma data, we estimate the home's value is $871,619.
Single-familyProperty Type
1952Year Built
0.72 acresLot Size
$850Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$871,619
$803K since sold in January 1979$13K since October
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 19.2% lower than the average sale price ($1.08M) 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
Jun 11, 2016 • Final
Building permit no plan check
Replace windows, sliding doors, and siding on a single-family home.
Remodel
Jun 11, 2016 • Final
Building history record
Work on a roof.
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: 1
Heating & Cooling
Heating Type: Wall Furnace
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Room Information
# of Rooms: 3
Exterior
Exterior Information
Physical Condition: Good
Building Style Type: Square Design
Construction Type: Wood/Steel
Building Construction Quality: Average
Exterior Wall: Wood Siding
Property Information
Living Sq. Ft: 1,026
Ground Floor Sq. Ft: 1,026
Building Sq. Ft: 1,026
# of Stories: 1
Legal Description: 84 FM 128-291-05 PT TO RD 83047120
Parking & Garage Information
Garage/Parking Sq. Ft: 324
Lot Information
# of Buildings: 1
Land Sq. Ft: 31,500
Acres: 0.7231
Zoning Code: AR5
County Use Description: SINGLE FAM DWELLING
Utility Information
Sewer Type: Public
Water Service Type: Public
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 2
Baths: 1.0
Sq. Ft.: 1,026
Stories: 1.0
Lot Size: 0.72 acres
Style: Single Family Residential
Year Built: 1952
Year Renovated: 1960
County: Sonoma County
APN: 128291027000
Home facts updated by county records on Oct 28, 2026
Around this home
Schools
K - 12
Preschool & daycare
Prestwood Elementary School
Public K-5 • Assigned • 0.6mi
5/10
Adele Harrison Middle School
Public 6-8 • Assigned • 0.6mi
4/10
Sonoma Valley High School
Public 9-12 • Assigned • 0.7mi
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
5/10 Heat Factor
7 days above 92° 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
16 unhealthy days expected this year, 16 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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72
46
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47
78
51
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85
55
89
55
84
58
75
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
$829,000 – $1.00M
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