1100 Castle Rd is a 3,361 square foot house on a 2.86 acre lot with 8 bedrooms and 5 bathrooms. Based on Redfin's Sonoma data, we estimate the home's value is $2,587,468.
Single-familyProperty Type
1948Year Built
2.86 acresLot Size
$770Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$2,587,468
$3,000 since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 22% lower than the average sale price ($3.32M) of 5 comparable homes.
As the MLS and public records start to fill up, we'll list the details here.
Year
Property tax
Land + Additions
Assessment*
2025
$8,324 (+1.9%)
$257,772 + $422,497
$680,269
2024
$8,169 (+2.0%)
$252,718 + $414,213
$666,931
2023
$8,009 (+3.1%)
$247,763 + $406,092
$653,855
2022
$7,767 (+2.2%)
$242,905 + $398,130
$641,035
2021
$7,601
$238,143 + $390,324
$628,467
2020
$7,599 (+2.1%)
$233,474 + $382,671
$616,145
2019
$7,446 (+5.3%)
$231,081 + $378,748
$609,829
2018
$7,074 (+1.6%)
$226,550 + $371,322
$597,872
2017
$6,963 (+9.3%)
$217,753 + $356,904
$574,657
2015
$6,371 (+1.5%)
$213,484 + $349,906
$563,390
2014
$6,277 (+0.9%)
$206,159 + $337,900
$544,059
2013
$6,218 (+1.7%)
$206,159 + $337,900
$544,059
2012
$6,117 (−1.7%)
$205,228 + $336,373
$541,601
2011
$6,226 (+4.8%)
$201,204 + $329,778
$530,982
2010
$5,941 (+0.8%)
$197,259 + $323,312
$520,571
2009
$5,891 (+4.7%)
$195,785 + $320,896
$516,681
2007
$5,628
$192,403 + $305,147
$497,550
Tax history for 1100 Castle Rd
Year
Property tax
Land + Additions
Assessment*
2025
$8,324 (+1.9%)
$257,772 + $422,497
$680,269
2024
$8,169 (+2.0%)
$252,718 + $414,213
$666,931
2023
$8,009 (+3.1%)
$247,763 + $406,092
$653,855
2022
$7,767 (+2.2%)
$242,905 + $398,130
$641,035
2021
$7,601
$238,143 + $390,324
$628,467
2020
$7,599 (+2.1%)
$233,474 + $382,671
$616,145
2019
$7,446 (+5.3%)
$231,081 + $378,748
$609,829
2018
$7,074 (+1.6%)
$226,550 + $371,322
$597,872
2017
$6,963 (+9.3%)
$217,753 + $356,904
$574,657
2015
$6,371 (+1.5%)
$213,484 + $349,906
$563,390
2014
$6,277 (+0.9%)
$206,159 + $337,900
$544,059
2013
$6,218 (+1.7%)
$206,159 + $337,900
$544,059
2012
$6,117 (−1.7%)
$205,228 + $336,373
$541,601
2011
$6,226 (+4.8%)
$201,204 + $329,778
$530,982
2010
$5,941 (+0.8%)
$197,259 + $323,312
$520,571
2009
$5,891 (+4.7%)
$195,785 + $320,896
$516,681
2007
$5,628
$192,403 + $305,147
$497,550
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Zoning and permits
Zoning
Permits
RR B6 2
VOH
RC 100'
Rural Residential - B6 Combining District - 2 Acres Per Dwelling Unit
The RR zone preserves the rural character and amenities in areas best utilized for low-density residential development. Rural residential uses are intended to take precedence over agricultural uses. Agricultural service uses are not allowed. The adopted zoning maps shall specify the maximum permitted density, determined by gross acreage for all residential uses. Minimum front, side and rear yard requirements and the minimum parcel or lot size, if not otherwise specified, shall conform to the base district with which the B6 district is combined unless specifically approved otherwise by the planning commission.
Zone overlays
Valley Oak Habitat Combining District
Permitted uses
Include but are not limited to:
Greenhouse / nursery
Livestock production
Housing-Group
Housing-Single unit
Agriculture-Cropland
Mar 19, 2024 • Final
Building permit with plan check
Battery
Electrical
New construction
Solar
Apr 15, 2022 • Final
Building permit with plan check
Battery
Electrical
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: 5
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Room Information
# of Rooms: 14
Exterior
Exterior Information
Building Style Type: U-Shape
Construction Type: Wood/Steel
Building Construction Quality: Average
Pool Information
Has Pool
Property Information
Subdivision Name: SONOMA
Living Sq. Ft: 3,361
Ground Floor Sq. Ft: 1,484
Building Sq. Ft: 5,164
# of Stories: 1
Legal Description: 88 FM 127-111-72 CW 78 OR 87054833 LLA 8487
Parking & Garage Information
Parking Type: Carport
Garage/Parking Sq. Ft: 756
Garage / Carport Type: Carport
Lot Information
# of Buildings: 1
Land Sq. Ft: 124,582
Legal Lot Number: 1
Acres: 2.86
Zoning Code: RR2
County Use Description: RURAL RESID-2+ RESID
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 8
Baths: 5.0
Sq. Ft.: 3,361
Stories: 1.0
Lot Size: 2.86 acres
Style: Single Family Residential
Year Built: 1948
Year Renovated: 1948
County: Sonoma County
APN: 127111079000
Home facts updated by county records on Aug 13, 2026
Around this home
Schools
Prestwood Elementary School
Public K-5 • Assigned • 1.3mi
5/10
Adele Harrison Middle School
Public 6-8 • Assigned • 1.7mi
4/10
Sonoma Valley High School
Public 9-12 • Assigned • 1.5mi
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 95° 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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46
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47
78
51
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82
54
89
55
86
56
80
51
65
46
59
43
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
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
$2.46M – $2.98M
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