517 Warren Rd is a 2,520 square foot house on a 8,494 square foot lot with 3 bedrooms and 3 bathrooms. - it last sold on June 15, 1978 for $243,000. Based on Redfin's San Mateo data, we estimate the home's value is $4,076,405.
Single-familyProperty Type
1976Year Built
8,494 sq ftLot Size
$1,618Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$4,076,405
$3.8M since sold in June 1978$85K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 6.4% higher than the average sale price ($3.83M) of 4 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
R1A
Single-Family Residence Districts
The R1 Single-Family Residence Districts are intended to create, preserve and enhance areas suitable for single-family dwellings with a substantial presence of open space and opportunities for outdoor living. The R1 districts are intended to protect the character and variety of neighborhoods, preserve privacy and prevent burdens on public facilities, while allowing reasonable housing opportunities for families.
Permitted uses
Include but are not limited to:
Day care facility
Housing-Single unit
Housing-Mobile home park
Aug 12, 2025 • Final
Single family (alteration/repair) - kitchen & bath remodel (flat)
Remodel a kitchen by removing and replacing cabinets, countertops, and appliances. No changes will be made to the existing plumbing locations.
Kitchen
Remodel
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
Basement Information
Basement Sq. Ft: 450
Basement Finish: Unfinished
Basement Type: Unfinished
Bathroom Information
# of Full Baths: 3
Heating & Cooling
Air Conditioning Type: Central
Heating Type: Central
Fireplace Information
# of Fireplaces: 2
Has Fireplace
Room Information
# of Rooms: 7
Exterior
Exterior Information
Physical Condition: Excellent
Building Style Type: Contemporary
Construction Type: Wood/Steel
Building Construction Quality: Good
Exterior Wall: Wood Siding
Building Type: Detached
View Information
View: Good
Property Information
Subdivision Name: 03 SAN MATEO PARK
Living Sq. Ft: 2,520
Gross Sq. Ft: 2,970
Ground Floor Sq. Ft: 1,870
Building Sq. Ft: 2,970
# of Stories: 2
Legal Description: SLY 65 FT OF LOT 248 SAN MATEO PARK SUB NO 3 RSM A/68 CITY OF SAN MATEO
Parking & Garage Information
# of Parking Spaces: 2
Parking Type: Basement Garage
Garage/Parking Sq. Ft: 450
Garage / Carport Type: Basement
Lot Information
# of Buildings: 1
Land Sq. Ft: 8,494
Legal Lot Number: 248
Acres: 0.195
Depth Footage: 138
Front Footage: 59
Zoning Code: R10010
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: 3
Baths: 3.0
Sq. Ft.: 2,520
Stories: 2.0
Lot Size: 8,494 square feet
Style: Single Family Residential
Year Built: 1976
Year Renovated: —
County: San Mateo County
APN: 031051240
Home facts updated by county records on Sep 2, 2026
Around this home
Schools
San Mateo Park Elementary School
Public K-5 • Assigned • 0.4mi
2/10
Borel Middle School
Public 6-8 • Assigned • 2.0mi
8/10
San Mateo High School
Public 9-12 • Assigned • 1.3mi
9/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Local insights from Redfin agents
San Mateo stayed one of the Peninsula's busiest markets. Homes averaged 110% of asking price, and buyers continue to compete for updated homes in neighborhoods like Aragon, Baywood and Beresford Park.