40 Sioux Ln is a 2,707 square foot house on a 0.27 acre lot with 4 bedrooms and 3 bathrooms. Based on Redfin's San Ramon data, we estimate the home's value is $1,918,157.
Single-familyProperty Type
1985Year Built
0.27 acresLot Size
$709Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$1,918,157
$4,000 since July
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 0.9% higher than the average sale price ($1.90M) of 6 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
$7,106 (+2.2%)
$149,154 + $440,024
$589,178
2024
$6,951 (+1.8%)
$146,230 + $431,397
$577,627
2023
$6,828 (+0.8%)
$143,363 + $422,939
$566,302
2022
$6,774 (+2.3%)
$140,552 + $414,647
$555,199
2021
$6,619 (+1.4%)
$137,797 + $406,517
$544,314
2020
$6,526 (−1.1%)
$135,096 + $398,547
$533,643
2019
$6,599 (+3.9%)
$133,711 + $394,461
$528,172
2018
$6,353 (+3.9%)
$131,090 + $386,727
$517,817
2017
$6,117 (+1.5%)
$126,000 + $371,711
$497,711
2016
$6,026 (+1.5%)
$126,000 + $371,711
$497,711
2015
$5,937 (+1.6%)
$123,530 + $364,423
$487,953
2014
$5,845 (+13.3%)
$119,292 + $351,919
$471,211
2013
$5,159 (+3.3%)
$119,292 + $351,919
$471,211
2012
$4,995 (+2.2%)
$118,753 + $295,329
$414,082
2011
$4,889 (+1.5%)
$116,425 + $289,539
$405,964
2010
$4,815
$114,143 + $283,862
$398,005
2009
$4,819 (+3.9%)
$113,290 + $281,741
$395,031
2008
$4,640
$113,560 + $282,411
$395,971
Tax history for 40 Sioux Ln
Year
Property tax
Land + Additions
Assessment*
2025
$7,106 (+2.2%)
$149,154 + $440,024
$589,178
2024
$6,951 (+1.8%)
$146,230 + $431,397
$577,627
2023
$6,828 (+0.8%)
$143,363 + $422,939
$566,302
2022
$6,774 (+2.3%)
$140,552 + $414,647
$555,199
2021
$6,619 (+1.4%)
$137,797 + $406,517
$544,314
2020
$6,526 (−1.1%)
$135,096 + $398,547
$533,643
2019
$6,599 (+3.9%)
$133,711 + $394,461
$528,172
2018
$6,353 (+3.9%)
$131,090 + $386,727
$517,817
2017
$6,117 (+1.5%)
$126,000 + $371,711
$497,711
2016
$6,026 (+1.5%)
$126,000 + $371,711
$497,711
2015
$5,937 (+1.6%)
$123,530 + $364,423
$487,953
2014
$5,845 (+13.3%)
$119,292 + $351,919
$471,211
2013
$5,159 (+3.3%)
$119,292 + $351,919
$471,211
2012
$4,995 (+2.2%)
$118,753 + $295,329
$414,082
2011
$4,889 (+1.5%)
$116,425 + $289,539
$405,964
2010
$4,815
$114,143 + $283,862
$398,005
2009
$4,819 (+3.9%)
$113,290 + $281,741
$395,031
2008
$4,640
$113,560 + $282,411
$395,971
*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-10
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
Apr 10, 2026 • Final
Miscellaneous - mechanical
HVAC
Oct 3, 2025 • 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
Room Information
# of Rooms: 10
Exterior
Property Information
Subdivision Name: SUBDIVISION 5815
Living Sq. Ft: 2,707
Ground Floor Sq. Ft: 1,653
Building Sq. Ft: 2,707
# of Stories: 2
Legal Description: T05815 L0129 B
Parking & Garage Information
Garage/Parking Sq. Ft: 706
Lot Information
# of Buildings: 1
Land Sq. Ft: 11,815
Legal Lot Number: 129
Acres: 0.2712
County Use Description: SINGLE FAMILY DETACHED WITH MA
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 4
Baths: 3.0
Sq. Ft.: 2,707
Stories: 2.0
Lot Size: 0.27 acres
Style: Single Family Residential
Year Built: 1985
Year Renovated: 2000
County: Contra Costa County
APN: 2097210138
Home facts updated by county records on Jul 13, 2026
Around this home
Schools
Bollinger Canyon Elementary School
Public K-5 • Assigned • 0.5mi
10/10
Iron Horse Middle School
Public 6-8 • Assigned • 1.4mi
10/10
California High School
Public 9-12 • Assigned • 1.5mi
10/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Local insights from Redfin agents
During the last 30 days, San Ramon's market has remained balanced. Buyers enjoy more choices and negotiating opportunities, while seller continuing seeing strong demand for turnkey homes with modern upgrades, functional layout and desirable...
San Ramon is best known for its seamless mix of outdoor recreation and modern conveniences. City Center Bishop Ranch is a major hub for dining, boutique shopping, and weekend events, while the Iron Horse Trail runs right through town, making it super...
San Ramon properties move fast, going pending in just 14 days. With fierce competition at the $1.6M median price, multiple offers and waived contingencies are the norm. Buyers must act decisively and submit their strongest offer immediately to win.