Rarley to find Single Story home in S diamond Bar Area within Walnut School District. Open and Bright Floor Plan with 3 Large Bedrooms and 2 bathrooms. Possibly to converted into 4 Bedrooms. New Flooring and Painted interior. Kept Well. Large Flat Backyard with Potentially ADU. Convenient Location to 57fwy and 60. Close to Hmart Plaza, Banks and AAA. .. .
Single-familyProperty Type
1979Year Built
0.39 acresLot Size
$744Est. Price/Sq.Ft.
2 car garageParking
Listed by Cathy Cheng•DRE #01270713• CC Royal Realty
Contact: 626-222-3050
Bought with Cathy Cheng•DRE #01270713• CC Royal Realty
CUSTOM BUILT SINGLE STORY HOME. POOL & GAZEBO. CITY LIGHTS VIEW. LIKE MODEL HOUSE. UPGRADED. PROFESSIONAL LANDSCAPING. REMODELED KITCHEN-NEW CABINET, NEW APPLIANCE, NEW CORIAN COUNTER TOP. NEW WOOD FLOOR IN L. R. & D. R. CUSTOM FINISHE MARBLE FIREPLACE. FRESH PAINT OUTSIDE & INSIDE. FIVE STAIN GLASS WINDOW. FISHPOND. TOW SKY LIGHTS. HUGE BACKYARD. MORE & MORE. MUST SEE.
Public Records
Dec 16, 1985
Sold
$175,000
$100/sq ft
Public Records
Jul 19, 1982
Sold
$29,000
$17/sq ft
Public Records
Sep 17, 1980
Sold
$128,500
$73/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$8,920 (+4.6%)
$429,063 + $257,639
$686,702
2024
$8,525 (+2.4%)
$429,063 + $257,639
$686,702
2023
$8,325 (+2.1%)
$420,650 + $252,588
$673,238
2022
$8,154 (+1.9%)
$412,402 + $247,636
$660,038
2021
$8,005 (+1.3%)
$404,316 + $242,781
$647,097
2020
$7,905 (+1.9%)
$396,389 + $238,021
$634,410
2019
$7,756 (+4.8%)
$392,325 + $235,581
$627,906
2018
$7,398 (+4.8%)
$384,633 + $230,962
$615,595
2017
$7,061 (+3.0%)
$369,699 + $221,995
$591,694
2016
$6,858 (−0.6%)
$369,699 + $221,995
$591,694
2015
$6,900 (+3.3%)
$362,450 + $217,643
$580,093
2014
$6,681 (−2.3%)
$337,000 + $203,000
$540,000
2012
$6,838 (+2.9%)
$281,200 + $168,800
$450,000
2011
$6,645 (+0.8%)
$341,600 + $205,124
$546,724
2010
$6,590 (+36.6%)
$334,902 + $201,102
$536,004
2009
$4,823 (−38.2%)
$378,900 + $159,700
$538,600
2008
$7,806
$272,400 + $114,800
$387,200
Tax history for 21465 Running Br
Year
Property tax
Land + Additions
Assessment*
2025
$8,920 (+4.6%)
$429,063 + $257,639
$686,702
2024
$8,525 (+2.4%)
$429,063 + $257,639
$686,702
2023
$8,325 (+2.1%)
$420,650 + $252,588
$673,238
2022
$8,154 (+1.9%)
$412,402 + $247,636
$660,038
2021
$8,005 (+1.3%)
$404,316 + $242,781
$647,097
2020
$7,905 (+1.9%)
$396,389 + $238,021
$634,410
2019
$7,756 (+4.8%)
$392,325 + $235,581
$627,906
2018
$7,398 (+4.8%)
$384,633 + $230,962
$615,595
2017
$7,061 (+3.0%)
$369,699 + $221,995
$591,694
2016
$6,858 (−0.6%)
$369,699 + $221,995
$591,694
2015
$6,900 (+3.3%)
$362,450 + $217,643
$580,093
2014
$6,681 (−2.3%)
$337,000 + $203,000
$540,000
2012
$6,838 (+2.9%)
$281,200 + $168,800
$450,000
2011
$6,645 (+0.8%)
$341,600 + $205,124
$546,724
2010
$6,590 (+36.6%)
$334,902 + $201,102
$536,004
2009
$4,823 (−38.2%)
$378,900 + $159,700
$538,600
2008
$7,806
$272,400 + $114,800
$387,200
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Public record
Public record
Zoning
Beds
3
Baths
2
Stories
—
Lot width
—
Lot depth
—
Lot size
0.39 Acres
Year renovated
1979
Sq. Ft.
1,752
Year built
1979
Style
Single Family Residential
County
Los Angeles County
APN
8714010027
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Aug 30, 2026.
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
Parking
Parking / Garage Information
Attached Garage
# of Garage Spaces: 2
# of Parking Spaces: 2
Interior
Laundry Information
Has Laundry
Individual Room
Bathroom Information
# of Baths (Full): 2
Cooling Information
Central
Has Cooling
Room Information
All Bedrooms Down
Fireplace Information
Family Room
Has Fireplace
Heating Information
Central Furnace
Has Heating
Interior Features
Entry Level: 1
Entry Location: 1
Levels: One
Main Level Bathrooms: 2
Main Level Bedrooms: 3
Exterior
Exterior Information
Structure Type: House
Exterior Features
Pool Features: None
Lot Information
Elevation Units: Feet
Lot Size Source: Assessor's Data
Lot Features: 0-1 Unit/Acre
Property Information
Total # of Units: 1
Common Walls: No Common Walls
Living Area Source: Assessor's Data
Parcel Number: 8714010027
Total # of Stories: 1
Has View
Year Built Source: Assessor
Property ADU: No
Utilities
Utilities Information
Sewer: Public Sewer
Water Source: District/Public
Location
Neighborhood Information
Community Features: Curbs
School Information
High School District: Walnut Valley Unified
Location Information
Latitude: 33.96523400
Longitude: -117.84070300
Directions: Cold Springs and Barbi
Public facts
Beds: 3
Baths: 2.0
Sq. Ft.: 1,752
Stories: —
Lot Size: 0.39 acres
Style: Single Family Residential
Year Built: 1979
Year Renovated: 1979
County: Los Angeles County
APN: 8714010027
Home facts updated by county records on Aug 30, 2026
Other
Listing Information
IDX Contact Info: 626-222-3050
Listing Agent Information
List Agent First Name: Cathy
List Agent Last Name: Cheng
Listing Office Information
List Office Name: CC Royal Realty
Selling Agent Information
Buyer Agent First Name: Cathy
Buyer Agent Last Name: Cheng
Selling Office Information
Buyer Office Name: CC Royal Realty
Around this home
Schools
Castle Rock Elementary School
Public K-5 • Assigned • 0.5mi
10/10
South Pointe Middle School
Public 6-8 • Assigned • 1.9mi
10/10
Diamond Bar High School
Public 9-12 • Assigned • 1.1mi
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
5% chance of being in a wildfire in next 30 years
5/10 Heat Factor
5 days above 98° expected this year, 15 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
86
64
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
$1.24M – $1.50M
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