20870 Missionary Ridge St, Walnut, CA 91789

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Off market jul 2015 for $930K

$1,458,851

Est. refi paymentEst. refi $5,309/mo

•

2,972

sq ft

20870 Missionary Ridge St, Walnut, CA 91789

About this home

LOCATION! LOCATION! LOCATION! Well-maintained and highly upgraded home near TOP-RANKED SCHOOLS of Walnut School District, including the NATIONALLY-RANKED DIAMOND BAR HIGH SCHOOL, and freeways 57, 60 & 71. This lovely home offers almost 3,000 sq ft of living space, with 4 bedrooms (one downstairs), a large bonus room & a loft. The step-down living room with its soaring ceiling and the dining room highlight the front part of the main floor. The large family room with its fire place and the light-and-bright kitchen with its breakfast nook area and its bay window overlooking the beautiful back yard highlight the rear part of the main floor. The master bedroom has a bay window and a balcony overlooking the back yard. The meticulously-maintained landscape and the pool highlight the beautiful back yard. So many upgrades were done in the last 3 years: brand new Stain Master carpet, baseboards, garage entry door and brass patio locks (in 2015); new water pipe throughout the house with lifetime warranty, water heater for the pool, water heater and A/C compressor (in 2014); new wood floor, gates to the back yard and garage doors (in 2013); remodeled bathrooms and new windows, patio sliding door and bedroom doors (in 2012). This home reflects the pride of ownership!

Single-familyProperty Type

1980Year Built

9,484 sq ftLot Size

$491Est. Price/Sq.Ft.

3 car garageParking

Listed by Huan Tran •DRE #01467547 • Coldwell Banker Realty

Bought with Kelly Lee •DRE #01733011 • Masters Realty Eastern Group

Redfin checked: 2 minutes ago

•Source:CRMLS #OC15116061

Redfin Estimate

$1,458,851

$529K since sold in July 2015$11K since October

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 0.3% higher than the average sale price ($1.45M) of 6 comparable homes.

SOLD SEP 28, 2026
$1,435,000
A
4 beds2 baths2,455 sq ft
2016 Peaceful Hills Rd, Walnut, CA 91789
SOLD APR 1, 2026
$1,390,000
B
4 beds3 baths2,781 sq ft
20885 Starshine, Walnut, CA 91789
SOLD MAY 5, 2026
$1,556,000
C
4 beds3 baths2,978 sq ft
1389 S Lemon, Walnut, CA 91789
SOLD SEP 22, 2026
$1,748,000
D
4 beds3 baths2,690 sq ft
22105 Birds Eye Dr, Diamond Bar, CA 91765
Latitude 33 Real Estate
SOLD JUL 28, 2026
$1,319,000
E
4 beds2.5 baths2,432 sq ft
1321 Glenthorpe, Walnut, CA 91789
Real Broker
SOLD OCT 6, 2026
$1,275,000
F
4 beds3 baths3,019 sq ft
3581 Hawkwood, Diamond Bar, CA 91765
The Agency

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Earn from this home

Sell

$819,743

Est. take-home

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Refinance

Est. cash available

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Rent

$4,797/mo

Redfin rental estimate

List your home for rent

Market trends in 91789, CA

Last updated October 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-list price

98.8%

0.5% MoM

Median sale price

$1.3M

$21K MoM

Avg. days on market

41d

9 days MoM

Recently sold homes

3 MoM

New listings for sale

OPEN SAT, 12PM TO 4PM
$1,550,000
4 beds3 baths1,874 sq ft
322 La Tortola, Walnut, CA 91789
OPEN SAT, 1PM TO 4PM
$1,450,000
4 beds2 baths2,053 sq ft
20092 Wildcat Canyon Rd, Walnut, CA 91789
Century 21 Masters
OPEN SAT, 2PM TO 4PM
$1,488,888
4 beds2 baths2,053 sq ft
20859 E Yellow Feather Cir, Walnut, CA 91789
OPEN SAT, 1PM TO 4PM
$1,588,000
4 beds3.5 baths2,473 sq ft
19935 Camino De Rosa, Walnut, CA 91789
$1,758,000
4 beds3 baths2,548 sq ft
838 Streamview, Walnut, CA 91789
$1,899,990
4 beds4 baths2,330 sq ft
22138 Portofino Dr, Walnut, CA 91789
OPEN SAT, 1PM TO 4PM
$777,000
3 beds2.5 baths1,846 sq ft
1034 E Romney Dr, Walnut, CA 91789
$1,200,000
4 beds3 baths2,763 sq ft
950 Coronel Ct, Walnut, CA 91789
OPEN SAT, 1PM TO 4PM
$310,000
3 beds2 baths1,740 sq ft
20739 LYCOMING St #44, Walnut, CA 91789
OPEN NOV 14, 11AM TO 5PM
$949,000
3 beds3 baths1,840 sq ft
826 Francesca, Walnut, CA 91789
See all

Provided by Redfin

Sale history for 20870 Missionary Ridge St

Year

Property tax

Land + Additions

Assessment*

2025

$13,941 (+5.3%)

$529,473 + $593,468

$1,122,941

2024

$13,235 (+2.5%)

$519,092 + $581,832

$1,100,924

2023

$12,917 (+2.1%)

$508,914 + $570,424

$1,079,338

2022

$12,650 (+1.9%)

$498,936 + $559,240

$1,058,176

2021

$12,415 (+1.3%)

$489,153 + $548,275

$1,037,428

2020

$12,257 (+2.0%)

$479,562 + $537,525

$1,017,087

2019

$12,021 (+4.1%)

$474,645 + $532,014

$1,006,659

2018

$11,552 (+4.8%)

$465,339 + $521,583

$986,922

2017

$11,019 (−5.2%)

$447,270 + $501,330

$948,600

2016

$11,624 (+103.6%)

$447,270 + $501,330

$948,600

2015

$5,708

$438,500 + $491,500

$930,000

2014

$5,713 (+1.1%)

$151,537 + $310,161

$461,698

2012

$5,649 (+3.0%)

$150,853 + $308,760

$459,613

2011

$5,484 (+0.8%)

$147,896 + $302,706

$450,602

2010

$5,442 (+0.4%)

$144,997 + $296,771

$441,768

2009

$5,421 (+2.8%)

$143,914 + $294,554

$438,468

2008

$5,275

$144,256 + $295,254

$439,510

Tax history for 20870 Missionary Ridge St

Year

Property tax

Land + Additions

Assessment*

2025

$13,941 (+5.3%)

$529,473 + $593,468

$1,122,941

2024

$13,235 (+2.5%)

$519,092 + $581,832

$1,100,924

2023

$12,917 (+2.1%)

$508,914 + $570,424

$1,079,338

2022

$12,650 (+1.9%)

$498,936 + $559,240

$1,058,176

2021

$12,415 (+1.3%)

$489,153 + $548,275

$1,037,428

2020

$12,257 (+2.0%)

$479,562 + $537,525

$1,017,087

2019

$12,021 (+4.1%)

$474,645 + $532,014

$1,006,659

2018

$11,552 (+4.8%)

$465,339 + $521,583

$986,922

2017

$11,019 (−5.2%)

$447,270 + $501,330

$948,600

2016

$11,624 (+103.6%)

$447,270 + $501,330

$948,600

2015

$5,708

$438,500 + $491,500

$930,000

2014

$5,713 (+1.1%)

$151,537 + $310,161

$461,698

2012

$5,649 (+3.0%)

$150,853 + $308,760

$459,613

2011

$5,484 (+0.8%)

$147,896 + $302,706

$450,602

2010

$5,442 (+0.4%)

$144,997 + $296,771

$441,768

2009

$5,421 (+2.8%)

$143,914 + $294,554

$438,468

2008

$5,275

$144,256 + $295,254

$439,510

*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

Baths

Stories

—

Lot width

—

Lot depth

—

Lot size

9,487 Sq. Ft.

Year renovated

1980

Sq. Ft.

2,972

Year built

1980

Style

Single Family Residential

County

Los Angeles County

APN

8765002005

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Oct 7, 2026.

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
# of Garage Spaces: 3
# of Parking Spaces: 3

Interior

Laundry Information
Has Laundry
Area

Kitchen Information
Appliances: Double Oven, Dishwasher, Gas Cooktop, Microwave, Refrigerator
Has Appliances
Breakfast Nook, Formal Dining Room

Bathroom Information
# of Baths (Full): 3

Cooling Information
Central, Electric, Gas
Has Cooling

Room Information
Bonus Room, Loft, Living Room, Main Floor Bedroom, Primary Suite

Fireplace Information
Family Room
Has Fireplace

Flooring Information
Carpet, Tile, Wood

Heating Information
Central Furnace
Has Heating

Interior Features
Balcony, Ceiling Fan, Corian Counters, Crown Moldings, High Ceilings (9 Feet+), Pantry, Recessed Lighting, Track Lighting, Two Story Ceilings, Wet Bar
Levels: Two
Spa Features: Above Ground
Has Spa
Window Features: Bay Window

Exterior

Exterior Information
Roof: Spanish Tile
Fencing: Masonry
Has Fence
Construction Materials: Drywall Walls, Stucco

Exterior Features
Patio And Porch Features: Covered, Wood
Has Patio
Pool Features: In Ground
Has Pool

Lot Information
Lot Size Source: Assessor's Data
Lot Features: Lot 6500-9999

Property Information
Total # of Units: 46
Common Walls: No Common Walls
Living Area Source: Assessor's Data
Parcel Number: 8765002005
Year Built Source: Assessor

Utilities

Utilities Information
Sewer: Sewer or Septic - None
Water Source: District/Public

Location

Multi-Unit Information
# of Units In Community: 46

Neighborhood Information
Community Features: Sidewalks

Location Information
Latitude: 33.98402800
Longitude: -117.84921300

Public facts

Beds: 4
Baths: 3.0
Sq. Ft.: 2,972
Stories: —
Lot Size: 9,487 square feet
Style: Single Family Residential
Year Built: 1980
Year Renovated: 1980
County: Los Angeles County
APN: 8765002005

Home facts updated by county records on Oct 7, 2026

Other

Listing Information
Days Active in MLS: 17
Continuous Days Active in MLS: 17

Listing Agent Information
List Agent First Name: Huan
List Agent Last Name: Tran

Listing Office Information
List Office Name: Coldwell Banker Res. Brokerage

Selling Agent Information
Buyer Agent First Name: Kelly
Buyer Agent Last Name: Lee

Selling Office Information
Buyer Office Name: Masters Realty Eastern Group

Around this home

Schools

K - 12
Preschool & daycare

Evergreen Elementary School

Public K-5 • Assigned • 0.9mi

9/10

Chaparral Middle School

Public 6-8 • Assigned • 1.9mi

10/10

Diamond Bar High School

Public 9-12 • Assigned • 0.6mi

10/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Local insights from Redfin agents

The Diamond Bar market is shifting, creating new opportunities for both buyers and sellers. Buyers have a bit more negotiating room, while well-priced, well-maintained homes can still attract strong interest. If you’re considering a move, I’d be...
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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)

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

$1.39M – $1.68M

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Home values near 20870 Missionary Ridge St

Data from public records.

Address	Redfin Estimate
20898 Missionary Ridge St, Walnut, CA 4 Beds \| 3 Baths \| 2509 Sq. Ft.	$1,251,263
20878 Missionary Ridge St, Walnut, CA 4 Beds \| 3 Baths \| 2509 Sq. Ft.	$1,402,140
20842 Missionary Ridge St, Walnut, CA 4 Beds \| 3 Baths \| 2972 Sq. Ft.	$1,535,878
20824 Missionary Ridge St, Walnut, CA 4 Beds \| 3 Baths \| 2509 Sq. Ft.	$1,235,479
20831 Missionary Ridge St, Walnut, CA 4 Beds \| 3 Baths \| 2509 Sq. Ft.	$1,353,612
20849 Missionary Ridge St, Walnut, CA 4 Beds \| 3 Baths \| 2509 Sq. Ft.	$1,365,992
20867 Missionary Ridge St, Walnut, CA 4 Beds \| 3 Baths \| 2972 Sq. Ft.	$1,498,589

Address	Redfin Estimate
20892 Missionary Ridge St, Walnut, CA 3 Beds \| - Baths \| 2275 Sq. Ft.	$1,243,554
20858 Missionary Ridge St, Walnut, CA 4 Beds \| 3 Baths \| 2972 Sq. Ft.	$1,344,671
20836 Missionary Ridge St, Walnut, CA 2 Beds \| 2 Baths \| 1817 Sq. Ft.	$1,049,624
20818 Missionary Ridge St, Walnut, CA 4 Beds \| 3 Baths \| 2972 Sq. Ft.	$1,370,346
20837 Missionary Ridge St, Walnut, CA 4 Beds \| 3 Baths \| 2972 Sq. Ft.	$1,420,906
20855 Missionary Ridge St, Walnut, CA 4 Beds \| 3 Baths \| 2972 Sq. Ft.	$1,681,256
20873 Missionary Ridge St, Walnut, CA 3 Beds \| - Baths \| 1817 Sq. Ft.	$1,160,333

Address	Redfin Estimate
20886 Missionary Ridge St, Walnut, CA 4 Beds \| 3 Baths \| 2972 Sq. Ft.	$1,352,896
20846 Missionary Ridge St, Walnut, CA 4 Beds \| 3 Baths \| 3501 Sq. Ft.	$1,462,896
20830 Missionary Ridge St, Walnut, CA 4 Beds \| 3 Baths \| 2275 Sq. Ft.	$1,269,372
20825 Missionary Ridge St, Walnut, CA 4 Beds \| 3 Baths \| 2972 Sq. Ft.	$1,496,830
20843 Missionary Ridge St, Walnut, CA 4 Beds \| 2.5 Baths \| 2979 Sq. Ft.	$1,591,310
20861 Missionary Ridge St, Walnut, CA 4 Beds \| 3 Baths \| 2509 Sq. Ft.	$1,357,365
20891 Missionary Ridge St, Walnut, CA 4 Beds \| 3 Baths \| 2509 Sq. Ft.	$1,253,269

Property information provided by CRMLS when last listed in 2015. This data may not match . Learn more.

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GreatSchools Ratings provided by GreatSchools.org.

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About this home

Redfin Estimate

Earn from this home

Market trends in 91789, CA

Sale history for 20870 Missionary Ridge St

Tax history for 20870 Missionary Ridge St

Public record

Property details

Around this home

Schools

Lifestyle

Local insights from Redfin agents

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 91789

Home values near 20870 Missionary Ridge St

More real estate resources