18609 Middlefield Rd is a 1,299 square foot house on a 10,000 square foot lot with 3 bedrooms and 2 bathrooms. - it last sold on May 08, 2001 for $315,000. Based on Redfin's Sonoma data, we estimate the home's value is $819,600.
Single-familyProperty Type
1948Year Built
10,000 sq ftLot Size
$631Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$819,600
$505K since sold in May 2001$1,000 since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 12% higher than the average sale price ($732K) 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
Feb 1, 2024 • Final
Building permit with plan check
Battery
Electrical
Oct 23, 2019 • Final
Building permit no plan check
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
Room Information
# of Rooms: 5
Exterior
Exterior Information
Building Style Type: L-Shape
Construction Type: Wood/Steel
Building Construction Quality: Average
Property Information
Subdivision Name: SONOMA HLNDS 01
Living Sq. Ft: 1,299
Ground Floor Sq. Ft: 1,299
Building Sq. Ft: 1,395
# of Stories: 1
Legal Description: LOT 22 & 23, BLK C, SONOMA HIGHLANDS
Parking & Garage Information
Parking Type: Carport
Garage/Parking Sq. Ft: 240
Garage / Carport Type: Carport
Lot Information
# of Buildings: 1
Land Sq. Ft: 10,000
Legal Lot Number: 22
Legal Block Number: C
Acres: 0.2296
Zoning Code: R15UA
County Use Description: SINGLE FAM DWELLING
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 3
Baths: 2.0
Sq. Ft.: 1,299
Stories: 1.0
Lot Size: 10,000 square feet
Style: Single Family Residential
Year Built: 1948
Year Renovated: 1952
County: Sonoma County
APN: 056334010000
Home facts updated by county records on Aug 13, 2026
Around this home
Schools
Flowery Elementary School
Public K-5 • Assigned • 0.3mi
5/10
Adele Harrison Middle School
Public 6-8 • Assigned • 2.9mi
4/10
Sonoma Valley High School
Public 9-12 • Assigned • 2.8mi
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
4/10 Heat Factor
7 days above 97° 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, 19 days in 30 years
Provided by First Street
Historical weather
Sonoma, CA • 95476
Average low and high temperatures (°F)
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86
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80
51
65
46
59
43
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Feb
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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
$779,000 – $943,000
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