273 Marks Rd is a 3,242 square foot house on a 1.1 acre lot with 5 bedrooms and 3 bathrooms. - it last sold on April 21, 1977 for $71,500. Based on Redfin's Alamo data, we estimate the home's value is $2,461,039.
Single-familyProperty Type
1936Year Built
1.1 acresLot Size
$759Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$2,461,039
$2.4M since sold in April 1977$87K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 15.6% lower than the average sale price ($2.92M) 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.
Permits
Sep 25, 2025 • Final
Building/residential/al/alteration
Remove and replace existing windows with new retrofit fibrex windows.
Remodel
Aug 30, 2024 • Final
Building - residential plumbing
Perform a spot repair on the sewer lateral.
Plumbing
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: 14
Exterior
Pool Information
Has Pool
Property Information
Living Sq. Ft: 3,242
Ground Floor Sq. Ft: 1,921
Building Sq. Ft: 3,242
# of Stories: 2
Legal Description: POR SE 1/4 SEC 17 T1S R1W
Parking & Garage Information
Garage/Parking Sq. Ft: 672
Lot Information
# of Buildings: 1
Land Sq. Ft: 47,916
Acres: 1.1
Zoning Code: R-40
County Use Description: SINGLE FAMILY
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 5
Baths: 3.0
Sq. Ft.: 3,242
Stories: 2.0
Lot Size: 1.1 acres
Style: Single Family Residential
Year Built: 1936
Year Renovated: 1966
County: Contra Costa County
APN: 1960700175
Home facts updated by county records on Jul 13, 2026
Around this home
Schools
Green Valley Elementary School
Public K-5 • Assigned • 1.0mi
10/10
Los Cerros Middle School
Public 6-8 • Assigned • 0.7mi
10/10
Monte Vista High School
Public 9-12 • Assigned • 0.7mi
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
2% chance of being in a wildfire in next 30 years
3/10 Heat Factor
8 days above 95° 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
Alamo, CA • 94507
Average low and high temperatures (°F)
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47
74
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80
55
86
58
83
57
76
53
62
44
56
43
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
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Dec
Sun exposure
In this area, properties receive around 11.8 hours in
June and 4.8 hours in December, placing it above the
U.S. average for solar exposure.
11.8 hrs
4.8 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$2.34M – $2.83M
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