121 Mavis Pl is a 1,520 square foot house on a 7,315 square foot lot with 4 bedrooms and 2 bathrooms. - it last sold on November 08, 2000 for $380,000. Based on Redfin's San Ramon data, we estimate the home's value is $1,304,174.
Single-familyProperty Type
1977Year Built
7,315 sq ftLot Size
$858Est. Price/Sq.Ft.
2 car garageParking
Source:Public Records
Redfin Estimate
$1,304,174
$924K since sold in November 2000$14K since October
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 1.9% lower than the average sale price ($1.33M) of 6 comparable homes.
bridgeMLS, Bay East AOR, or Contra Costa AOR #11059237
Sep 29, 2000
Listing Removed
—
Public Records
Dec 7, 1990
Sold
$260,000
$171/sq ft
Year
Property tax
Land + Additions
Assessment*
2026
$5,525 (+2.8%)
$338,124 + $245,904
$584,028
2025
$5,374 (+1.8%)
$338,124 + $245,904
$584,028
2024
$5,280 (+0.7%)
$331,495 + $241,083
$572,578
2023
$5,243 (−0.9%)
$324,996 + $236,356
$561,352
2022
$5,290 (+2.4%)
$318,624 + $231,722
$550,346
2021
$5,165 (+1.1%)
$312,377 + $227,179
$539,556
2020
$5,111 (+0.8%)
$306,252 + $222,725
$528,977
2019
$5,072 (+3.4%)
$303,112 + $220,442
$523,554
2018
$4,906 (+3.6%)
$297,169 + $216,120
$513,289
2017
$4,737 (+1.5%)
$285,631 + $207,729
$493,360
2016
$4,668 (+1.8%)
$285,631 + $207,729
$493,360
2015
$4,586 (+2.0%)
$280,031 + $203,656
$483,687
2014
$4,498 (+1.0%)
$270,422 + $196,668
$467,090
2013
$4,453 (+3.2%)
$270,422 + $196,668
$467,090
2012
$4,316 (+2.2%)
$269,200 + $195,780
$464,980
2011
$4,224 (+1.4%)
$263,922 + $191,942
$455,864
2010
$4,167 (−22.1%)
$258,748 + $188,179
$446,927
2009
$5,349 (+3.8%)
$256,815 + $186,773
$443,588
2008
$5,154
$257,426 + $187,217
$444,643
Tax history for 121 Mavis Pl
Year
Property tax
Land + Additions
Assessment*
2026
$5,525 (+2.8%)
$338,124 + $245,904
$584,028
2025
$5,374 (+1.8%)
$338,124 + $245,904
$584,028
2024
$5,280 (+0.7%)
$331,495 + $241,083
$572,578
2023
$5,243 (−0.9%)
$324,996 + $236,356
$561,352
2022
$5,290 (+2.4%)
$318,624 + $231,722
$550,346
2021
$5,165 (+1.1%)
$312,377 + $227,179
$539,556
2020
$5,111 (+0.8%)
$306,252 + $222,725
$528,977
2019
$5,072 (+3.4%)
$303,112 + $220,442
$523,554
2018
$4,906 (+3.6%)
$297,169 + $216,120
$513,289
2017
$4,737 (+1.5%)
$285,631 + $207,729
$493,360
2016
$4,668 (+1.8%)
$285,631 + $207,729
$493,360
2015
$4,586 (+2.0%)
$280,031 + $203,656
$483,687
2014
$4,498 (+1.0%)
$270,422 + $196,668
$467,090
2013
$4,453 (+3.2%)
$270,422 + $196,668
$467,090
2012
$4,316 (+2.2%)
$269,200 + $195,780
$464,980
2011
$4,224 (+1.4%)
$263,922 + $191,942
$455,864
2010
$4,167 (−22.1%)
$258,748 + $188,179
$446,927
2009
$5,349 (+3.8%)
$256,815 + $186,773
$443,588
2008
$5,154
$257,426 + $187,217
$444,643
*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
Oct 29, 2021 • Final
Photovoltaic - electrical
Electrical
Solar
Jun 1, 2021 • Final
Miscellaneous - mechanical
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
Room Information
# of Rooms: 9
Exterior
Property Information
Subdivision Name: SUBDIVISION 4171
Living Sq. Ft: 1,520
Ground Floor Sq. Ft: 1,520
Building Sq. Ft: 1,520
# of Stories: 1
Legal Description: TRACT 4171 LOT 107 EX MR
Parking & Garage Information
Garage/Parking Sq. Ft: 447
Lot Information
# of Buildings: 1
Land Sq. Ft: 7,315
Legal Lot Number: 107
Acres: 0.1679
County Use Description: SINGLE FAMILY
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 4
Baths: 2.0
Sq. Ft.: 1,520
Stories: 1.0
Lot Size: 7,315 square feet
Style: Single Family Residential
Year Built: 1977
Year Renovated: 1993
County: Contra Costa County
APN: 2122820257
Home facts updated by county records on Oct 30, 2026
Around this home
Schools
K - 12
Preschool & daycare
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
Local insights from Redfin agents
San Ramon, Past 3 months,Median price $1.51M, down 4.5% YoY,Homes sold: 169 in July, up 1%,Days on market 20 days,Market Active but more balanced; slight seller advantage,Bottom line: Prices have softened, but homes are still selling relatively...