251 Marks Rd is a 4,312 square foot house on a 1.6 acre lot with 5 bedrooms and 5 bathrooms. - it last sold on September 20, 1993 for $725,000. Based on Redfin's Alamo data, we estimate the home's value is $3,155,196.
Single-familyProperty Type
1988Year Built
1.6 acresLot Size
$732Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$3,155,196
$2.4M since sold in September 1993$127K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 4.6% higher than the average sale price ($3.02M) 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
Nov 4, 2014 • Final
Building - residential re-roof
Remove existing wood shakes and install new composition shingles on a residential building.
Roofing
Apr 11, 2007 • Final
Building - residential mechanical
Replace the existing furnace with a new gas furnace.
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
Heating & Cooling
Air Conditioning Type: Central
Heating Type: Forced Air
Fireplace Information
# of Fireplaces: 3
Has Fireplace
Room Information
# of Rooms: 14
Exterior
Exterior Information
Physical Condition: Excellent
Building Style Type: Contemporary
Building Construction Quality: Excellent
Pool Information
Has Pool
Property Information
Living Sq. Ft: 4,312
Ground Floor Sq. Ft: 3,693
Building Sq. Ft: 4,312
# of Stories: 2
Legal Description: POR SE 1/4 SEC 17 T1S R1W 1.60 AC
Parking & Garage Information
# of Parking Spaces: 3
Parking Type: Garage/Carport
Garage/Parking Sq. Ft: 1,251
Lot Information
# of Buildings: 1
Land Sq. Ft: 69,696
Acres: 1.6
Zoning Code: R-40
County Use Description: SINGLE FAMILY
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 5
Baths: 5.0
Sq. Ft.: 4,312
Stories: 2.0
Lot Size: 1.6 acres
Style: Single Family Residential
Year Built: 1988
Year Renovated: 1989
County: Contra Costa County
APN: 1960700126
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
4/10 Flood Factor
Estimated 19-29% chance 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
7 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)
58
39
61
42
68
46
68
47
74
51
80
54
80
55
86
58
83
57
76
53
62
44
56
43
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
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
$3.00M – $3.63M
Reach more buyers when you sell with Redfin. Save up to $31,552 in fees.3 minutes to get started.