30 Alwin Rd is a 1,533 square foot house on a 0.61 acre lot with 2 bedrooms and 1 bathroom. Based on Redfin's Walnut Creek data, we estimate the home's value is $1,108,899.
Single-familyProperty Type
1952Year Built
0.61 acresLot Size
$723Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$1,108,899
$3,000 since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 9% lower than the average sale price ($1.22M) 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
$2,278 (+2.0%)
$34,980 + $69,989
$104,969
2024
$2,234 (+2.5%)
$34,295 + $68,617
$102,912
2023
$2,180 (+1.5%)
$33,623 + $67,272
$100,895
2022
$2,148 (+2.8%)
$32,964 + $65,953
$98,917
2021
$2,090 (+3.3%)
$32,318 + $64,660
$96,978
2020
$2,023 (−3.1%)
$31,685 + $63,393
$95,078
2019
$2,087 (+3.2%)
$31,361 + $62,743
$94,104
2018
$2,021 (+2.7%)
$30,747 + $61,513
$92,260
2017
$1,968 (+7.2%)
$29,554 + $59,125
$88,679
2016
$1,836 (+2.9%)
$29,554 + $59,125
$88,679
2015
$1,785 (+2.4%)
$28,975 + $57,966
$86,941
2014
$1,743 (+2.5%)
$27,981 + $55,978
$83,959
2013
$1,700 (+27.0%)
$27,981 + $55,978
$83,959
2012
$1,339 (+3.2%)
$27,855 + $55,726
$83,581
2011
$1,297 (+3.1%)
$27,309 + $54,634
$81,943
2010
$1,258 (−14.3%)
$26,774 + $53,563
$80,337
2009
$1,468 (+0.9%)
$26,574 + $53,163
$79,737
2008
$1,455
$26,638 + $53,290
$79,928
Tax history for 30 Alwin Rd
Year
Property tax
Land + Additions
Assessment*
2025
$2,278 (+2.0%)
$34,980 + $69,989
$104,969
2024
$2,234 (+2.5%)
$34,295 + $68,617
$102,912
2023
$2,180 (+1.5%)
$33,623 + $67,272
$100,895
2022
$2,148 (+2.8%)
$32,964 + $65,953
$98,917
2021
$2,090 (+3.3%)
$32,318 + $64,660
$96,978
2020
$2,023 (−3.1%)
$31,685 + $63,393
$95,078
2019
$2,087 (+3.2%)
$31,361 + $62,743
$94,104
2018
$2,021 (+2.7%)
$30,747 + $61,513
$92,260
2017
$1,968 (+7.2%)
$29,554 + $59,125
$88,679
2016
$1,836 (+2.9%)
$29,554 + $59,125
$88,679
2015
$1,785 (+2.4%)
$28,975 + $57,966
$86,941
2014
$1,743 (+2.5%)
$27,981 + $55,978
$83,959
2013
$1,700 (+27.0%)
$27,981 + $55,978
$83,959
2012
$1,339 (+3.2%)
$27,855 + $55,726
$83,581
2011
$1,297 (+3.1%)
$27,309 + $54,634
$81,943
2010
$1,258 (−14.3%)
$26,774 + $53,563
$80,337
2009
$1,468 (+0.9%)
$26,574 + $53,163
$79,737
2008
$1,455
$26,638 + $53,290
$79,928
*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
R20
Single-Family Residential District
The purpose of the Single-Family Residential Zoning District is to provide for single-family residential development that is consistent with the General Plan. The intent is to promote and encourage a suitable environment for family life. This would include those conditionally permitted uses that are generally an integral part of single-family residential neighborhoods and that are compatible with residential activities including parks, playgrounds, religious assembly, day care, and schools.
Permitted uses
Include but are not limited to:
Housing-Single unit
Housing-Senior
Infrastructure
Mar 4, 2020 • Final
Mechanical, electrical, or plumbing only
Replace the HVAC unit and ductwork.
HVAC
Sep 12, 2019 • Final
Reroof - multifamily residential, commercial or residential with overlay
Perform a reroof by applying a spray foam overlay over one existing layer of roofing.
Roofing
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: 6
Exterior
Property Information
Subdivision Name: SAN MIGUEL RHO
Living Sq. Ft: 1,533
Ground Floor Sq. Ft: 1,533
Building Sq. Ft: 1,533
# of Stories: 1
Legal Description: POR RO SAN MIGUEL
Parking & Garage Information
Garage/Parking Sq. Ft: 480
Lot Information
# of Buildings: 1
Land Sq. Ft: 26,572
Acres: 0.61
County Use Description: SINGLE FAMILY
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 2
Baths: 1.0
Sq. Ft.: 1,533
Stories: 1.0
Lot Size: 0.61 acres
Style: Single Family Residential
Year Built: 1952
Year Renovated: 1954
County: Contra Costa County
APN: 1791000027
Home facts updated by county records on Jul 13, 2026
Around this home
Schools
Indian Valley Elementary School
Public K-5 • Assigned • 0.8mi
10/10
Walnut Creek Intermediate School
Public 6-8 • Assigned • 0.7mi
9/10
Las Lomas High School
Public 9-12 • Assigned • 0.8mi
10/10
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
0.93% chance of being in a wildfire in next 30 years
4/10 Heat Factor
8 days above 96° expected this year, 16 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
9/10 Air Factor
17 unhealthy days expected this year, 17 days in 30 years
Provided by First Street
Historical weather
Walnut Creek, CA • 94598
Average low and high temperatures (°F)
61
40
64
43
72
47
72
49
79
53
84
57
83
57
90
59
86
59
79
54
64
46
57
44
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 11.5 hours in
June and 4.9 hours in December, placing it above the
U.S. average for solar exposure.
11.5 hrs
4.9 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$1.05M – $1.28M
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