21510 Chirping Sparrow Rd is a 2,037 square foot house on a 0.27 acre lot with 4 bedrooms and 2 bathrooms. - it last sold on January 28, 1994 for $254,000. Based on Redfin's Diamond Bar data, we estimate the home's value is $1,206,659.
Single-familyProperty Type
1980Year Built
0.27 acresLot Size
$592Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$1,206,659
$953K since sold in January 1994$10K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 14.1% lower than the average sale price ($1.40M) 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
RL
Low Density Residential District
The RL zoning district is intended primarily for parcels developed with existing detached single-family dwellings. The maximum allowed density for new residential subdivisions within this zoning district will be three dwellings per gross acre. The RL zoning district is consistent with the low density residential land use category of the general plan.
Permitted uses
Include but are not limited to:
Livestock production
Housing-Single unit
Housing-Senior
Housing-Other
Infrastructure
Fire house
Police station
Park & open space
Property details
Interior
Heating & Cooling
Air Conditioning Type: Central
Heating Type: Central
Exterior
Property Information
Subdivision Name: 34161
Living Sq. Ft: 2,037
# of Units: 1
Legal Description: TR=34161 LOT 75
Lot Information
# of Buildings: 1
Land Sq. Ft: 11,760
Legal Lot Number: 75
Municipality Name: DIAMOND BAR
Acres: 0.27
Zoning Code: LCR19000*
County Use Description: SINGLE FAMILY RESID
Utility Information
Water Service Type: Public
Financial
Assessor Information
Assessment Year: 2025
Public facts
Beds: 4
Baths: 2.0
Sq. Ft.: 2,037
Stories: —
Lot Size: 0.27 acres
Style: Single Family Residential
Year Built: 1980
Year Renovated: 1980
County: Los Angeles County
APN: 8714022012
Home facts updated by county records on Aug 30, 2026
Around this home
Schools
Castle Rock Elementary School
Public K-5 • Assigned • 0.6mi
10/10
South Pointe Middle School
Public 6-8 • Assigned • 2.0mi
10/10
Diamond Bar High School
Public 9-12 • Assigned • 1.2mi
10/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
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