A beautiful executive home located within the highly desirable Diamond Bar area in the Walnut Valley School District! This home is perfectly located at the top of the hill. Enter through the double door entry to see an elegant chandelier and covered spiral staircase. This 3 bedroom plus 2 big suite home has been upgraded with the finest quality materials all over the house and brings in a lot of natural lights, making the home bright and airy. New custom double pane windows can be found throughout. Downstairs features natural wood flooring with crown molding. The beautifully redone kitchen includes Quartz counter tops, wood kitchen island, and custom stainless steel appliances. The gorgeous dining room has a custom chandelier and french doors. The family room showcases a warm fireplace, recessed lighting, and a wet bar with a wine cellar. Upstairs in the master bedroom you will find amazing vaulted ceilings with ceiling fan, a bathroom that has gorgeous granite counter tops, a separate bathtub and shower, and a walk-in closet. The over-sized bonus room has been converted into a suite with adjustable ceiling windows and a full bath. The spacious backyard features a newly redone pool and spa, fire pit, many flowers, fruit trees, and a beautifully covered patio area perfect for entertaining guests. Custom shelving in the 3-car attached garage is perfect for additional space saving. This home is located near award-winning schools, major freeways, restaurants, and shopping centers.
A beautiful executive home located within the highly desirable Diamond Bar area in the Walnut Valley School District! This home is perfectly located at the top of the hill. Enter through the double door entry to see an elegant chandelier and covered spiral staircase. This 3 bedroom plus 2 big suite home has been upgraded with the finest quality materials all over the house and brings in a lot of natural lights,making the home bright and airy. New custom double pane windows can be found throughout. Downstairs features natural wood flooring with crown molding. The beautifully redone kitchen includes Quartz counter tops, wood kitchen island, and custom stainless steel appliances. The gorgeous dining room has a custom chandelier and french doors.The family room showcases a warm fireplace, recessed lighting, and a wet bar with a wine cellar. Upstairs in the master bedroom you will find amazing vaulted ceilings with ceiling fan, a bathroom that has gorgeous granite counter tops, a separate bathtub and shower, and a walk-in closet. The over-sized bonus room has been converted into a suite with adjustable ceiling windows and a full bath. The spacious backyard features a newly redone pool and spa, fire pit, many flowers, fruit trees, and a beautifully covered patio area perfect for entertaining guests. Custom shelving in the 3-car attached garage is perfect for additional space saving. This home is located near award-winning schools, major freeways, restaurants, and shopping centers.
CRMLS #TR13119935
Aug 2, 2013
Sold
$839,500
$277/sq ft
Jul 8, 2013
Pending
—
Jul 4, 2013
Delisted
—
Jun 21, 2013
Listed
$829,750
$274/sq ft
* * * Standard Sale * * * Beautiful Spacious Pool Home In South Diamond Bar * * * This 4-bedroom (all bedrooms upstairs), 3-bath home features 3,032 square feet of living space, nested on a large, quiet 12,726 square foot lot. This executive home has an upgraded kitchen with granite counter tops, recessed lighting, stainless steel sink, appliances, and beautiful hardwood floors, throughout the first level, plus crown molding. The master bedroom includes vaulted ceiling, walk-in closet, and mirrored closed doors. Oversize bonus room upstairs for gatherings, or entertain your guest and friends in the private setting of your own quiet backyard. Cool off and have fun in the sparkling pool or relax in the jacuzzi, then warm up in front of the gas fire pit. Located within the prestigious award winning Walnut Valley Unified school district, known for its academic excellence!! Freeway friendly, within minutes to most major freeways, great nearby shopping and dining. Don't miss a great opportunity to own this stunning home. The previous owner spent his final days here.
CRMLS #C10048734
Oct 15, 2010
Listing Removed
—
May 6, 2010
Listed
$749,900
$247/sq ft
Public Records
Oct 18, 1993
Sold
$260,000
$86/sq ft
Public Records
Oct 16, 1990
Sold
$405,000
$134/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$16,952 (+5.0%)
$568,913 + $782,824
$1,351,737
2024
$16,148 (+3.1%)
$568,913 + $782,824
$1,351,737
2023
$15,660 (+2.1%)
$557,758 + $767,475
$1,325,233
2022
$15,336 (+1.9%)
$546,822 + $752,427
$1,299,249
2021
$15,054 (+1.3%)
$536,100 + $737,674
$1,273,774
2020
$14,861 (+2.0%)
$525,589 + $723,210
$1,248,799
2019
$14,573 (+35.0%)
$520,200 + $715,795
$1,235,995
2018
$10,792 (+4.8%)
$510,000 + $701,760
$1,211,760
2017
$10,295 (+3.1%)
$433,270 + $453,445
$886,715
2016
$9,987 (−0.6%)
$433,270 + $453,445
$886,715
2015
$10,049
$424,775 + $444,554
$869,329
2014
$10,057 (+121.5%)
$410,200 + $429,300
$839,500
2012
$4,540 (+3.0%)
$165,624 + $193,091
$358,715
2011
$4,408 (+0.8%)
$162,377 + $189,305
$351,682
2010
$4,373 (+0.5%)
$159,194 + $185,594
$344,788
2009
$4,351 (+2.8%)
$158,005 + $184,207
$342,212
2008
$4,232
$158,381 + $184,645
$343,026
Tax history for 21080 Running Branch Rd
Year
Property tax
Land + Additions
Assessment*
2025
$16,952 (+5.0%)
$568,913 + $782,824
$1,351,737
2024
$16,148 (+3.1%)
$568,913 + $782,824
$1,351,737
2023
$15,660 (+2.1%)
$557,758 + $767,475
$1,325,233
2022
$15,336 (+1.9%)
$546,822 + $752,427
$1,299,249
2021
$15,054 (+1.3%)
$536,100 + $737,674
$1,273,774
2020
$14,861 (+2.0%)
$525,589 + $723,210
$1,248,799
2019
$14,573 (+35.0%)
$520,200 + $715,795
$1,235,995
2018
$10,792 (+4.8%)
$510,000 + $701,760
$1,211,760
2017
$10,295 (+3.1%)
$433,270 + $453,445
$886,715
2016
$9,987 (−0.6%)
$433,270 + $453,445
$886,715
2015
$10,049
$424,775 + $444,554
$869,329
2014
$10,057 (+121.5%)
$410,200 + $429,300
$839,500
2012
$4,540 (+3.0%)
$165,624 + $193,091
$358,715
2011
$4,408 (+0.8%)
$162,377 + $189,305
$351,682
2010
$4,373 (+0.5%)
$159,194 + $185,594
$344,788
2009
$4,351 (+2.8%)
$158,005 + $184,207
$342,212
2008
$4,232
$158,381 + $184,645
$343,026
*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
4
Baths
3
Stories
—
Lot width
—
Lot depth
—
Lot size
0.29 Acres
Year renovated
1982
Sq. Ft.
3,032
Year built
1982
Style
Single Family Residential
County
Los Angeles County
APN
8714020032
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: 3
Driveway, Garage
Has Parking
# of Parking Spaces: 3
Interior
Laundry Information
Has Laundry
Individual Room
Kitchen Information
Appliances: Dishwasher, Garbage Disposal, Gas Oven, Gas Range, Gas Water Heater, Microwave, Vented Exhaust Fan
Has Appliances
Area, Breakfast Counter / Bar, Formal Dining Room
Granite Counters, Kitchen Island, Kitchen Open to Family Room, Remodeled Kitchen, Self-closing drawers
Bathroom Information
# of Baths (Full): 4
Bathtub, Shower, Double sinks in bath(s), Double Sinks In Master Bath, Granite Counters, Remodeled, Upgraded
Cooling Information
Central
Has Cooling
Room Information
All Bedrooms Up, Bonus Room, Converted Bedroom, Entry, Family Room, Formal Entry, Laundry, Living Room, Primary Bathroom, Primary Bedroom, Walk-In Closet
Fireplace Information
Family Room
Has Fireplace
Flooring Information
Carpet, Tile, Wood
Heating Information
Central Furnace
Has Heating
Interior Features
Double Door Entry, French Doors
Block Walls, Cathedral-Vaulted Ceilings, Ceiling Fan, Crown Moldings, Granite Counters, High Ceilings (9 Feet+), Open Floor Plan, Recessed Lighting, Wet Bar
Lot Features: Back Yard, Front Yard, Landscaped, Lot 10000-19999 Sqft
Property Information
Total # of Units: 1
Common Walls: No Common Walls
Parcel Number: 8714020032
Property Condition: Turnkey
Total # of Stories: 2
Has View
Year Built Source: Assessor
Financial
Assesments Information
Assessments: Unknown
Utilities
Utilities Information
Sewer: Public Sewer
Water Source: District/Public
Location
Multi-Unit Information
# of Units In Community: 1
Neighborhood Information
Community Features: Sidewalks, Storm Drains, Street Lighting
School Information
Elementary School: Castlerock
Middle Or Junior School: Southpoint
High School: Diamond Bar
High School District: Walnut Valley Unified
Elementary School 2: CASTLE2
Middle Or Junior School 2: SOUTHP
High School 2: DIABAR
Location Information
Latitude: 33.96316700
Longitude: -117.84614300
Directions: Castle Rock Rd, Gold Run Dr, Running Branch Rd
Road Surface Type: Maintained
Zoning: LCR19000*
Public facts
Beds: 4
Baths: 3.0
Sq. Ft.: 3,032
Stories: —
Lot Size: 0.29 acres
Style: Single Family Residential
Year Built: 1982
Year Renovated: 1982
County: Los Angeles County
APN: 8714020032
Home facts updated by county records on Aug 30, 2026
Other
Listing Information
Days Active in MLS: 9
Continuous Days Active in MLS: 9
Listing Agent Information
List Agent First Name: CHRISTINE
List Agent Last Name: KIM
Listing Office Information
List Office Name: FIRST TEAM REAL ESTATE
Selling Agent Information
Buyer Agent First Name: Marisol
Buyer Agent Last Name: Navar
Selling Office Information
Buyer Office Name: Redfin Corporation
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 • 1.3mi
10/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Local insights from Redfin agents
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