1236 Upper Happy Valley Rd is a 4,743 square foot house on a 1.8 acre lot with 4 bedrooms and 7 bathrooms. Based on Redfin's Lafayette data, we estimate the home's value is $4,727,397.
Single-familyProperty Type
1952Year Built
1.8 acresLot Size
$997Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$4,727,397
$205K since July
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 2.9% lower than the average sale price ($4.87M) 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
$7,232 (−2.6%)
$104,997 + $436,996
$541,993
2024
$7,422 (−2.0%)
$102,939 + $428,428
$531,367
2023
$7,574 (+1.6%)
$100,921 + $420,028
$520,949
2022
$7,455 (+3.0%)
$98,943 + $411,793
$510,736
2021
$7,240 (+0.6%)
$97,003 + $403,719
$500,722
2020
$7,199 (+5.1%)
$95,101 + $395,803
$490,904
2019
$6,846 (+3.6%)
$94,126 + $391,745
$485,871
2018
$6,610 (+1.7%)
$92,281 + $384,064
$476,345
2017
$6,497 (+2.2%)
$88,699 + $369,151
$457,850
2016
$6,354 (+2.9%)
$88,699 + $369,151
$457,850
2015
$6,176 (+1.2%)
$86,960 + $361,913
$448,873
2014
$6,100 (+1.5%)
$83,977 + $349,495
$433,472
2013
$6,011 (+3.2%)
$83,977 + $349,495
$433,472
2012
$5,827 (+1.8%)
$83,598 + $347,916
$431,514
2011
$5,724 (+4.4%)
$81,959 + $341,095
$423,054
2010
$5,481 (+1.8%)
$80,352 + $334,407
$414,759
2009
$5,382 (+1.7%)
$79,752 + $331,908
$411,660
2008
$5,293
$79,942 + $332,697
$412,639
Tax history for 1236 Upper Happy Valley Rd
Year
Property tax
Land + Additions
Assessment*
2025
$7,232 (−2.6%)
$104,997 + $436,996
$541,993
2024
$7,422 (−2.0%)
$102,939 + $428,428
$531,367
2023
$7,574 (+1.6%)
$100,921 + $420,028
$520,949
2022
$7,455 (+3.0%)
$98,943 + $411,793
$510,736
2021
$7,240 (+0.6%)
$97,003 + $403,719
$500,722
2020
$7,199 (+5.1%)
$95,101 + $395,803
$490,904
2019
$6,846 (+3.6%)
$94,126 + $391,745
$485,871
2018
$6,610 (+1.7%)
$92,281 + $384,064
$476,345
2017
$6,497 (+2.2%)
$88,699 + $369,151
$457,850
2016
$6,354 (+2.9%)
$88,699 + $369,151
$457,850
2015
$6,176 (+1.2%)
$86,960 + $361,913
$448,873
2014
$6,100 (+1.5%)
$83,977 + $349,495
$433,472
2013
$6,011 (+3.2%)
$83,977 + $349,495
$433,472
2012
$5,827 (+1.8%)
$83,598 + $347,916
$431,514
2011
$5,724 (+4.4%)
$81,959 + $341,095
$423,054
2010
$5,481 (+1.8%)
$80,352 + $334,407
$414,759
2009
$5,382 (+1.7%)
$79,752 + $331,908
$411,660
2008
$5,293
$79,942 + $332,697
$412,639
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Permits
Jul 26, 2021 • Final
Building - residential re-roof
Remove and replace the roof with CertainTeed composition shingles. A cool roof HERS form is required at the time of final inspection.
Roofing
Jan 30, 2010 • Final
Building/residential/cg/carport garage
Construct a garage and enclose an existing carport.
ADU
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
Pool Information
Has Pool
Property Information
Subdivision Name: RANCHO ACALANES
Living Sq. Ft: 4,743
Ground Floor Sq. Ft: 4,743
Building Sq. Ft: 4,743
# of Stories: 1
Legal Description: RO ACALANES 1.80 AC
Parking & Garage Information
Garage/Parking Sq. Ft: 460
Lot Information
# of Buildings: 1
Land Sq. Ft: 78,408
Acres: 1.8
County Use Description: SINGLE FAMILY
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 4
Baths: 7.0
Sq. Ft.: 4,743
Stories: 1.0
Lot Size: 1.8 acres
Style: Single Family Residential
Year Built: 1952
Year Renovated: 1975
County: Contra Costa County
APN: 2461700094
Home facts updated by county records on Jul 13, 2026
Around this home
Schools
Happy Valley Elementary School
Public K-5 • Assigned • 0.5mi
8/10
M. H. Stanley Middle School
Public 6-8 • Assigned • 2.4mi
8/10
Acalanes High School
Public 9-12 • Assigned • 3.0mi
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
1% chance of being in a wildfire in next 30 years
3/10 Heat Factor
7 days above 92° expected this year, 15 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
8/10 Air Factor
14 unhealthy days expected this year, 15 days in 30 years
Provided by First Street
Historical weather
Lafayette, CA • 94549
Average low and high temperatures (°F)
60
43
62
46
70
50
68
49
75
52
78
54
79
55
87
58
84
59
77
56
63
48
57
45
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
$4.49M – $5.44M
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