20990 Starshine Rd is a 1,878 square foot house on a 0.28 acre lot with 3 bedrooms and 3 bathrooms. - it last sold on April 29, 1983 for $147,000. Based on Redfin's Walnut data, we estimate the home's value is $1,123,509.
Single-familyProperty Type
1983Year Built
0.28 acresLot Size
$598Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$1,123,509
$977K since sold in April 1983$8,000 since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 8.5% lower than the average sale price ($1.23M) 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: 35742
Living Sq. Ft: 1,878
# of Units: 1
Legal Description: TR=35742 LOT 47
Lot Information
# of Buildings: 1
Land Sq. Ft: 12,155
Legal Lot Number: 47
Municipality Name: DIAMOND BAR
Acres: 0.279
Depth Footage: 101
Front Footage: 121
Zoning Code: LCRPD100006U*
County Use Description: SINGLE FAMILY RESID
Financial
Assessor Information
Assessment Year: 2025
Public facts
Beds: 3
Baths: 3.0
Sq. Ft.: 1,878
Stories: —
Lot Size: 0.28 acres
Style: Single Family Residential
Year Built: 1983
Year Renovated: 1983
County: Los Angeles County
APN: 8765003025
Home facts updated by county records on Sep 21, 2026
Around this home
Schools
Evergreen Elementary School
Public K-5 • Assigned • 1.0mi
9/10
Chaparral Middle School
Public 6-8 • Assigned • 1.9mi
10/10
Diamond Bar High School
Public 9-12 • Assigned • 0.7mi
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
4/10 Fire Factor
3% chance of being in a wildfire in next 30 years
5/10 Heat Factor
6 days above 98° expected this year, 17 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
Walnut, CA • 91789
Average low and high temperatures (°F)
70
49
72
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75
53
73
53
77
58
82
61
87
64
90
66
87
65
81
59
73
52
71
50
Jan
Feb
Mar
Apr
May
Jun
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Aug
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Oct
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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
$1.07M – $1.29M
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