318 Bay Rd is a 260 square foot house on a 0.92 acre lot with 1 bedroom and 1 bathroom. - it last sold on March 22, 2002 for $1,800,000. Based on Redfin's Atherton data, we estimate the home's value is $6,547,988.
Single-familyProperty Type
1941Year Built
0.92 acresLot Size
$25,185Est. Price/Sq.Ft.
2 car garageParking
Source:Public Records
Redfin Estimate
$6,547,988
$4.7M since sold in March 2002$404K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 13.5% higher than the average sale price ($5.77M) 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.
Zoning and permits
Zoning
Permits
R-1A
Residential District
This chapter identifies the allowed use and permit requirements and development standards for the residential district R-1A. The intent of this district is to implement the residential land use categories of the town’s general plan. It is designed to designate land for the development of residential uses consistent with the development regulations set forth in this title.
Permitted uses
Include but are not limited to:
Housing
Housing-Single unit
Sep 29, 2019 • Final
Plumbing
Remove and replace a water heater.
Plumbing
Water heater
Jun 4, 2013 • Final
Reroof
Remove and replace the roof on a single-family home with asphalt shingles.
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
Bathroom Information
# of Full Baths: 1
Heating & Cooling
Air Conditioning Type: Central
Fireplace Information
# of Fireplaces: 2
Has Fireplace
Room Information
# of Rooms: 1
Exterior
Exterior Information
Physical Condition: Good
Building Style Type: Conventional
Construction Type: Wood/Steel
Building Construction Quality: Average
Exterior Wall: Wood Siding
Building Type: Detached
Building Improvement Type: Detached
Pool Information
Has Pool
View Information
View: Average
Property Information
Subdivision Name: FLOOD ACRES
Living Sq. Ft: 260
Gross Sq. Ft: 3,020
Ground Floor Sq. Ft: 260
Building Sq. Ft: 260
# of Stories: 1
Legal Description: LOT 3 FLOOD ACRES RSM 22/1 TOWN OF ATHERTON
Lot Information
# of Buildings: 1
Land Sq. Ft: 40,275
Legal Lot Number: 3
Acres: 0.9246
Depth Footage: 195
Front Footage: 210
Zoning Code: R1001A
County Use Description: SINGLE FAMILY
Location Information
Parcel Location Influence: Woodland
Utility Information
Sewer Type: Public
Water Service Type: Public
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 1
Baths: 1.0
Sq. Ft.: 260
Stories: 1.0
Lot Size: 0.92 acres
Style: Single Family Residential
Year Built: 1941
Year Renovated: 1941
County: San Mateo County
APN: 061091060
Home facts updated by county records on Sep 2, 2026
Around this home
Schools
Laurel Elementary School
Public K-5 • Assigned • 0.4mi
10/10
Hillview Middle School
Public 6-8 • Assigned • 2.6mi
9/10
Menlo-Atherton High School
Public 9-12 • Assigned • 0.8mi
8/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
6/10 Flood Factor
Estimated 71-79% chance of a flood reaching the building in the next 30 years
1/10 Fire Factor
Unlikely to be in a wildfire in next 30 years
3/10 Heat Factor
7 days above 90° expected this year, 14 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
8/10 Air Factor
16 unhealthy days expected this year, 16 days in 30 years
Provided by First Street
Historical weather
Atherton, CA • 94027
Average low and high temperatures (°F)
61
41
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45
71
47
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48
74
51
78
55
77
55
81
57
80
58
77
53
65
46
60
45
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 10.7 hours in
June and 5 hours in December, placing it above the
U.S. average for solar exposure.
10.7 hrs
5 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$6.22M – $7.53M
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