9921 Windsor Way is a 1,520 square foot house on a 7,500 square foot lot with 4 bedrooms and 2 bathrooms. - it last sold on September 19, 1989 for $257,000. Based on Redfin's San Ramon data, we estimate the home's value is $1,283,684.
Single-familyProperty Type
1977Year Built
7,500 sq ftLot Size
$845Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$1,283,684
$1.0M since sold in September 1989$8,000 since July
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 5.6% lower than the average sale price ($1.36M) 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.
Zoning and permits
Zoning
Permits
RS-7
Single-Family Residential Zone
The RS zone is applied to areas of the City appropriate for single-family residential land uses in neighborhoods at a density of three to six units per net acre, subject to appropriate standards. The specific allowable density for each parcel is shown on the Zoning Map by a numerical suffix residential density designator (see Section D2-8). Minimum lot size for new parcels ranges from 3,500 to 12,000 sq ft. Depending upon the applicable residential density designator, the RS zone is consistent with and implements the Single Family Low Density, Single Family Low-Medium Density, and Single Family Medium Density land use classifications of the General Plan.
Permitted uses
Include but are not limited to:
Day care facility
Housing-Single unit
Housing-Senior
Housing-Student
Housing-Other
May 1, 2025 • Final
Water heater/softener - plumbing
Plumbing
Water heater
Aug 6, 2015 • Final
Furnace a/c - mechanical (residential)
HVAC
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
Heating & Cooling
Air Conditioning Type: Central
Heating Type: Forced Air
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Room Information
# of Rooms: 9
Exterior
Exterior Information
Physical Condition: Good
Building Style Type: Contemporary
Construction Type: Frame
Building Construction Quality: Average
Exterior Wall: Stucco
Property Information
Living Sq. Ft: 1,520
Ground Floor Sq. Ft: 1,520
Building Sq. Ft: 1,520
# of Stories: 1
Legal Description: T04171 L0055 B EX MR
Parking & Garage Information
# of Parking Spaces: 2
Parking Type: Carport
Garage/Parking Sq. Ft: 446
Garage / Carport Type: Carport
Lot Information
# of Buildings: 1
Land Sq. Ft: 7,500
Legal Lot Number: 55
Acres: 0.1722
County Use Description: SINGLE FAMILY
Utility Information
Sewer Type: Public
Water Service Type: Public
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 4
Baths: 2.0
Sq. Ft.: 1,520
Stories: 1.0
Lot Size: 7,500 square feet
Style: Single Family Residential
Year Built: 1977
Year Renovated: 1978
County: Contra Costa County
APN: 2122820133
Home facts updated by county records on Jul 13, 2026
Around this home
Schools
Montevideo Elementary School
Public K-5 • Assigned • 0.5mi
9/10
Pine Valley Middle School
Public 6-8 • Assigned • 0.9mi
10/10
California High School
Public 9-12 • Assigned • 0.2mi
10/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
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