21179 Chirping Sparrow Rd is a 2,780 square foot house on a 9,427 square foot lot with 4 bedrooms and 3 bathrooms. - it last sold on December 14, 1987 for $276,000. Based on Redfin's Diamond Bar data, we estimate the home's value is $1,357,673.
Single-familyProperty Type
1983Year Built
9,427 sq ftLot Size
$488Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$1,357,673
$1.1M since sold in December 1987$6,000 since September
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 1.8% lower than the average sale price ($1.38M) of 5 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
Pool Information
Has Pool
Property Information
Subdivision Name: 29053
Living Sq. Ft: 2,780
# of Units: 1
Legal Description: TR=29053 LOT 48
Lot Information
# of Buildings: 1
Land Sq. Ft: 9,427
Legal Lot Number: 48
Municipality Name: DIAMOND BAR
Acres: 0.2164
Depth Footage: 112
Front Footage: 85
Zoning Code: LCR19000*
County Use Description: SINGLE FAMILY RESID
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 4
Baths: 3.0
Sq. Ft.: 2,780
Stories: —
Lot Size: 9,427 square feet
Style: Single Family Residential
Year Built: 1983
Year Renovated: 1986
County: Los Angeles County
APN: 8714020042
Home facts updated by county records on Oct 7, 2026
Around this home
Schools
Castle Rock Elementary School
Public K-5 • Assigned • 0.7mi
10/10
South Pointe Middle School
Public 6-8 • Assigned • 2.1mi
10/10
Diamond Bar High School
Public 9-12 • Assigned • 1.4mi
10/10
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
5/10 Fire Factor
6% chance of being in a wildfire in next 30 years
5/10 Heat Factor
5 days above 98° expected this year, 14 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
6/10 Air Factor
10 unhealthy days expected this year, 13 days in 30 years
Provided by First Street
Historical weather
Diamond Bar, CA • 91765
Average low and high temperatures (°F)
68
50
71
52
73
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53
76
57
81
60
86
63
89
65
85
65
80
59
71
52
69
51
Jan
Feb
Mar
Apr
May
Jun
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Dec
Sun exposure
In this area, properties receive around 9.5 hours in
June and 6.9 hours in December, placing it above the
U.S. average for solar exposure.
9.5 hrs
6.9 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$1.29M – $1.56M
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