2803 Castle Rock Rd is a 1,300 square foot house on a 8,555 square foot lot with 3 bedrooms and 2 bathrooms. Based on Redfin's Diamond Bar data, we estimate the home's value is $872,899.
Single-familyProperty Type
1962Year Built
8,555 sq ftLot Size
$671Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$872,899
$6,000 since September
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 6.8% lower than the average sale price ($936K) of 6 comparable homes.
As the MLS and public records start to fill up, we'll list the details here.
Year
Property tax
Land + Additions
Assessment*
2025
$1,668 (+11.5%)
$28,467 + $58,230
$86,697
2024
$1,496 (+2.0%)
$27,909 + $57,089
$84,998
2023
$1,467 (+2.4%)
$27,362 + $55,970
$83,332
2022
$1,433 (+2.4%)
$26,826 + $54,873
$81,699
2021
$1,399 (+1.2%)
$26,300 + $53,798
$80,098
2020
$1,383 (+1.7%)
$25,785 + $52,744
$78,529
2019
$1,359 (+7.7%)
$25,521 + $52,204
$77,725
2018
$1,262 (+3.9%)
$25,021 + $51,181
$76,202
2017
$1,214 (+3.9%)
$24,050 + $49,195
$73,245
2016
$1,169
$24,050 + $49,195
$73,245
2015
$1,170 (−0.7%)
$23,579 + $48,231
$71,810
2014
$1,178 (+2.3%)
$22,771 + $46,577
$69,348
2012
$1,151 (+3.0%)
$22,669 + $46,367
$69,036
2011
$1,118 (+1.3%)
$22,225 + $45,458
$67,683
2010
$1,104 (+1.8%)
$21,790 + $44,567
$66,357
2009
$1,084 (+3.8%)
$21,628 + $44,234
$65,862
2008
$1,044
$21,680 + $44,340
$66,020
Tax history for 2803 Castle Rock Rd
Year
Property tax
Land + Additions
Assessment*
2025
$1,668 (+11.5%)
$28,467 + $58,230
$86,697
2024
$1,496 (+2.0%)
$27,909 + $57,089
$84,998
2023
$1,467 (+2.4%)
$27,362 + $55,970
$83,332
2022
$1,433 (+2.4%)
$26,826 + $54,873
$81,699
2021
$1,399 (+1.2%)
$26,300 + $53,798
$80,098
2020
$1,383 (+1.7%)
$25,785 + $52,744
$78,529
2019
$1,359 (+7.7%)
$25,521 + $52,204
$77,725
2018
$1,262 (+3.9%)
$25,021 + $51,181
$76,202
2017
$1,214 (+3.9%)
$24,050 + $49,195
$73,245
2016
$1,169
$24,050 + $49,195
$73,245
2015
$1,170 (−0.7%)
$23,579 + $48,231
$71,810
2014
$1,178 (+2.3%)
$22,771 + $46,577
$69,348
2012
$1,151 (+3.0%)
$22,669 + $46,367
$69,036
2011
$1,118 (+1.3%)
$22,225 + $45,458
$67,683
2010
$1,104 (+1.8%)
$21,790 + $44,567
$66,357
2009
$1,084 (+3.8%)
$21,628 + $44,234
$65,862
2008
$1,044
$21,680 + $44,340
$66,020
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Zoning
RLM
Low/Medium Density Residential District
The RLM zoning district is intended primarily for existing subdivided areas developed with detached single-family dwellings. The maximum allowed density for new residential subdivisions within this zoning district will be five dwellings per gross acre. The RLM zoning district is consistent with the low density residential land use category of the general plan.
Permitted uses
Include but are not limited to:
Housing-Single unit
Housing-Senior
Housing-Other
Infrastructure
Fire house
Police station
Park & open space
Property details
Interior
Heating & Cooling
Heating Type: Central
Exterior
Property Information
Subdivision Name: 25985
Living Sq. Ft: 1,300
# of Units: 1
Legal Description: TRACT # 25985 LOT 70
Lot Information
# of Buildings: 1
Land Sq. Ft: 8,555
Legal Lot Number: 70
Municipality Name: DIAMOND BAR
Acres: 0.1964
Depth Footage: 112
Front Footage: 75
Zoning Code: LCR171/2
County Use Description: SINGLE FAMILY RESID
Location Information
Parcel Location Influence: Corner
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 3
Baths: 2.0
Sq. Ft.: 1,300
Stories: —
Lot Size: 8,555 square feet
Style: Single Family Residential
Year Built: 1962
Year Renovated: 1962
County: Los Angeles County
APN: 8285017019
Home facts updated by county records on Oct 6, 2026
Around this home
Schools
Castle Rock Elementary School
Public K-5 • Assigned • 0.3mi
10/10
South Pointe Middle School
Public 6-8 • Assigned • 1.2mi
10/10
Diamond Bar High School
Public 9-12 • Assigned • 0.4mi
10/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
3/10 Flood Factor
Estimated 10-14% chance of a flood reaching the building in the next 30 years
5/10 Fire Factor
4% chance of being in a wildfire in next 30 years
6/10 Heat Factor
7 days above 98° expected this year, 22 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
53
72
53
76
57
81
60
86
63
89
65
85
65
80
59
71
52
69
51
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
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
$830,000 – $1.00M
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