870 Chiltern Rd is a 3,950 square foot house on a 0.6 acre lot with 4 bedrooms and 4.5 bathrooms. - it last sold on July 27, 1984 for $950,000. Based on Redfin's Hillsborough data, we estimate the home's value is $7,802,772.
Single-familyProperty Type
1932Year Built
0.6 acresLot Size
$1,975Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$7,802,772
$6.9M since sold in July 1984$397K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 30.7% higher than the average sale price ($5.97M) 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
Oct 23, 2023 • Final
Drain waste line
Replace the cast iron drain line in the laundry room with new plastic piping.
Plumbing
Mar 23, 2017 • Final
Hvac
Replace the existing furnace with a new Lennox 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
Basement Information
Basement Sq. Ft: 350
Basement Finish: Completely Finished
Basement Type: Unfinished
Bathroom Information
# of Full Baths: 4
# of 1/2 Baths: 1
Heating & Cooling
Air Conditioning Type: Central
Heating Type: Central
Fireplace Information
# of Fireplaces: 3
Has Fireplace
Room Information
# of Rooms: 11
Exterior
Exterior Information
Physical Condition: Excellent
Construction Type: Wood/Steel
Building Construction Quality: Excellent
Pool Information
Has Pool
View Information
View: Excellent
Property Information
Subdivision Name: HILLSBOROUGH PARK
Living Sq. Ft: 3,950
Gross Sq. Ft: 4,300
Ground Floor Sq. Ft: 2,520
Building Sq. Ft: 4,300
# of Stories: 2
Legal Description: LOT 51 LESS NELY 30 FT HILLSBOROUGH PARK RSM 11/58 TO 61 TOWN OF HILLSBOROUGH
Parking & Garage Information
# of Parking Spaces: 3
Parking Type: Detached Garage
Garage/Parking Sq. Ft: 520
Garage / Carport Type: Detached
Lot Information
# of Buildings: 1
Land Sq. Ft: 25,997
Legal Lot Number: 51
Acres: 0.5968
Depth Footage: 151
Front Footage: 170
Zoning Code: R10025
County Use Description: SINGLE FAMILY
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 4
Baths: 4.5
Sq. Ft.: 3,950
Stories: 2.0
Lot Size: 0.6 acres
Style: Single Family Residential
Year Built: 1932
Year Renovated: 1969
County: San Mateo County
APN: 031321040
Home facts updated by county records on Sep 2, 2026
Around this home
Schools
South Hillsborough School
Public K-5 • Assigned • 0.7mi
9/10
Crocker Middle School
Public 6-8 • Assigned • 1.2mi
8/10
San Mateo High School
Public 9-12 • Assigned • 1.9mi
9/10
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
1/10 Fire Factor
Unlikely to be in a wildfire in next 30 years
1/10 Heat Factor
2 days above 86° expected this year, 5 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
7/10 Air Factor
12 unhealthy days expected this year, 12 days in 30 years
Provided by First Street
Historical weather
Hillsborough, CA • 94010
Average low and high temperatures (°F)
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72
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63
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59
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Sun exposure
In this area, properties receive around 10.5 hours in
June and 5 hours in December, placing it above the
U.S. average for solar exposure.
10.5 hrs
5 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$7.41M – $8.97M
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