1105 Castle Rd is a 3,859 square foot house on a 2.5 acre lot with 3 bedrooms and 3.5 bathrooms. - it last sold on July 15, 1983 for $135,000. Based on Redfin's Sonoma data, we estimate the home's value is $5,856,512.
Single-familyProperty Type
2015Year Built
2.5 acresLot Size
$1,518Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$5,856,512
$5.7M since sold in July 1983$124K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 43.5% higher than the average sale price ($4.08M) of 4 comparable homes.
*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
RC 100'
VOH
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
Jul 3, 2025 • Active
Building permit with plan check
Construct a new studio space with a covered patio. The structure will be built on a slab on grade foundation with perimeter footings.
New construction
Nov 9, 2018 • Final
Building permit with plan check
Pool and hot tub
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
# of 1/2 Baths: 1
Room Information
# of Rooms: 12
Exterior
Exterior Information
Building Style Type: L-Shape
Construction Type: Wood/Steel
Building Construction Quality: Average
Property Information
Subdivision Name: G RITZ
Living Sq. Ft: 3,859
Ground Floor Sq. Ft: 1,290
Building Sq. Ft: 7,665
# of Stories: 2
Legal Description: PET T/P BUS DISSOLVED SOME EQUIP SOLD FER
Parking & Garage Information
Parking Type: Attached Garage
Garage/Parking Sq. Ft: 650
Garage / Carport Type: Attached
Lot Information
# of Buildings: 1
Land Sq. Ft: 108,900
Legal Lot Number: 11
Acres: 2.5
Zoning Code: RR2
County Use Description: RURAL RESID-2+ RESID
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 3
Baths: 3.5
Sq. Ft.: 3,859
Stories: 2.0
Lot Size: 2.5 acres
Style: Single Family Residential
Year Built: 2015
Year Renovated: —
County: Sonoma County
APN: 127181006000
Home facts updated by county records on Aug 13, 2026
Around this home
Schools
Prestwood Elementary School
Public K-5 • Assigned • 1.2mi
5/10
Adele Harrison Middle School
Public 6-8 • Assigned • 1.6mi
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)
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86
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80
51
65
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59
43
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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
$5.56M – $6.74M
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