859 Penarth Ave, Diamond Bar, CA 91789 - View 1
859 Penarth Ave, Diamond Bar, CA 91789 - View 2
859 Penarth Ave, Diamond Bar, CA 91789 - View 3
859 Penarth Ave, Diamond Bar, CA 91789 - View 4
859 Penarth Ave, Diamond Bar, CA 91789 - View 5
859 Penarth Ave, Diamond Bar, CA 91789 - View 6
859 Penarth Ave, Diamond Bar, CA 91789 - View 7
859 Penarth Ave, Diamond Bar, CA 91789 - View 8
859 Penarth Ave, Diamond Bar, CA 91789 - View 9
859 Penarth Ave, Diamond Bar, CA 91789 - View 10
859 Penarth Ave, Diamond Bar, CA 91789 - View 11
859 Penarth Ave, Diamond Bar, CA 91789 - View 12
859 Penarth Ave, Diamond Bar, CA 91789 - View 13
859 Penarth Ave, Diamond Bar, CA 91789 - View 14
859 Penarth Ave, Diamond Bar, CA 91789 - View 15
859 Penarth Ave, Diamond Bar, CA 91789 - View 16
859 Penarth Ave, Diamond Bar, CA 91789 - View 17
859 Penarth Ave, Diamond Bar, CA 91789 - View 18
859 Penarth Ave, Diamond Bar, CA 91789 - View 19
859 Penarth Ave, Diamond Bar, CA 91789 - View 20
859 Penarth Ave, Diamond Bar, CA 91789 - View 21
859 Penarth Ave, Diamond Bar, CA 91789 - View 22
859 Penarth Ave, Diamond Bar, CA 91789 - View 23
859 Penarth Ave, Diamond Bar, CA 91789 - View 24
859 Penarth Ave, Diamond Bar, CA 91789 - View 25
859 Penarth Ave, Diamond Bar, CA 91789 - View 26
859 Penarth Ave, Diamond Bar, CA 91789 - View 27
859 Penarth Ave, Diamond Bar, CA 91789 - View 28
859 Penarth Ave, Diamond Bar, CA 91789 - View 29
859 Penarth Ave, Diamond Bar, CA 91789 - View 30
859 Penarth Ave, Diamond Bar, CA 91789 - View 31
859 Penarth Ave, Diamond Bar, CA 91789 - View 32
859 Penarth Ave, Diamond Bar, CA 91789 - View 33
859 Penarth Ave, Diamond Bar, CA 91789 - View 34
859 Penarth Ave, Diamond Bar, CA 91789 - View 35
859 Penarth Ave, Diamond Bar, CA 91789 - View 36
859 Penarth Ave, Diamond Bar, CA 91789 - View 37
859 Penarth Ave, Diamond Bar, CA 91789 - View 38
859 Penarth Ave, Diamond Bar, CA 91789 - View 39
859 Penarth Ave, Diamond Bar, CA 91789 - View 40
859 Penarth Ave, Diamond Bar, CA 91789 - View 41
859 Penarth Ave, Diamond Bar, CA 91789 - View 42
859 Penarth Ave, Diamond Bar, CA 91789 - View 43
859 Penarth Ave, Diamond Bar, CA 91789 - View 44
859 Penarth Ave, Diamond Bar, CA 91789 - View 45

859 Penarth Ave, Diamond Bar, CA 91789

Sale Price: $975,500
May 22, 20251,389 sqft4 beds2 baths
Listed by: Michael Douglas
License #: 01350443
Phone #: 949-307-1210
Coldwell Banker Realty
Source:
CRMLS Logo
MLS #: OC25111996

Property Description

Discover the epitome of move-in ready in this stunningly renovated 4-bedroom, 2-bathroom home on a sprawling 13,181 sqft cul-de-sac lot. Built in 1963 and offering a thoughtfully designed 1,389 sqft, this residence has been completely transformed with all-new features throughout. Step into a light-filled open floor plan showcasing stylish new laminate and tile flooring. The modern gourmet kitchen is a chef's delight, featuring sleek black and stainless steel appliances, abundant new granite countertops, soft-close cabinets, and a convenient breakfast bar island. The dining area flows seamlessly outdoors through elegant new glass double doors, perfect for al fresco dining. Relax in the inviting family room with a cozy fireplace and new double-pane sliding glass doors leading to the enclosed patio – your year-round haven for enjoyment and entertaining. The primary suite is a tranquil retreat with a new vanity sink, a luxurious natural stone tile shower, and ample his & hers closets. Three additional bedrooms, including a versatile office space, share a beautifully upgraded guest bathroom with all-new fixtures. Enjoy the peace of mind that comes with all-new interior paint, bathroom vanities, toilets, bathtub & showers, dual pane windows, interior doors, recessed lighting, and a garage door with an automatic opener. Imagine the future possibilities on this expansive lot: an ADU for extended family or rental income, a sparkling pool and spa, dedicated RV/boat parking, or even expanding the existing home! Located in the award-winning Walnut school district, with easy walking distance to Walnut Elementary and a short drive to Mt. San Antonio College and Cal Poly Pomona, you'll also enjoy convenient access to parks, recreation, shopping, dining, entertainment, and major freeways (10, 57 & 60). This meticulously renovated gem offers a lifestyle of comfort, convenience, and endless potential!
Assignment
Get a detailed valuation report, schedule a tour or make an offer!
Kevin Kretzmer
Kevin Kretzmer

Role: TurboHome Head Agent

Experience: 10 years

No. of Transactions: 227

“I specialize in helping clients find their dream home or next investment in California, focusing on residential and multi-family properties. My client-first approach, clear communication, and attention to detail ensure that everyone I work with receives exceptional service.”

TurboHome Fair Market Estimate

TurboHome

TurboHome Savings

$15,015

TurboHome Estimated Value

$963,000

$693 sqft

High Valuation
$1,011,150
$728/sqft
Normal Valuation
$963,000
$693/sqft
Low Valuation
$914,850
$659/sqft

3rd Party Estimates

Source$/sqftValuation
HouseCanary$693/sqft$963,000

Neighborhood

Loading map...

Comparative Value

$730K

$868K

$918K

$976K

$1000K

20853 Moonlake St, Walnut, CA 91789

Sale Price: $730,000

Selected Comparable

20471 Flintgate Dr, Diamond Bar, CA 91789

Sale Price: $868,000

Selected Comparable

21128 Sunwood Dr, Diamond Bar, CA 91789

Sale Price: $918,000

Selected Comparable

859 Penarth Ave, Diamond Bar, CA 91789

List Price: $925,000

Subject Property

859 Penarth Ave, Diamond Bar, CA 91789

Sale Price: $975,500

Selected Comparable

860 Adamsgrove Ave, Diamond Bar, CA 91789

Sale Price: $999,888

Selected Comparable

Neighborhood Comps

Subject Property

SUBJECT
859 Penarth Ave, Diamond Bar, CA 91789

859 Penarth Ave, Diamond Bar, CA 91789

List: $925,000

Listed: 5/22/2025

Area:1,389 sqft
Price/sqft:$666
Beds:4
Baths:2
Year Built:
Lot Size:13,184

Comparable Properties

COMPARABLE
Choose comps
859 Penarth Ave, Diamond Bar, CA 91789

859 Penarth Ave, Diamond Bar, CA 91789

Sale: $975,500

6/26/20250.00 mi

Area:1,389 sqft
Price/sqft:$702
Beds:4
Baths:2
Year Built:
Weight:25.9%
860 Adamsgrove Ave, Diamond Bar, CA 91789

860 Adamsgrove Ave, Diamond Bar, CA 91789

Sale: $999,888

9/11/20240.10 mi

Area:1,753 sqft
Price/sqft:$570
Beds:4
Baths:2
Year Built:
Weight:19.1%
20853 Moonlake St, Walnut, CA 91789

20853 Moonlake St, Walnut, CA 91789

Sale: $730,000

2/19/20250.08 mi

Area:1,266 sqft
Price/sqft:$577
Beds:3
Baths:2
Year Built:
Weight:18.9%
21128 Sunwood Dr, Diamond Bar, CA 91789

21128 Sunwood Dr, Diamond Bar, CA 91789

Sale: $918,000

2/14/20250.37 mi

Area:1,629 sqft
Price/sqft:$564
Beds:4
Baths:3
Year Built:
Weight:18.1%
20471 Flintgate Dr, Diamond Bar, CA 91789

20471 Flintgate Dr, Diamond Bar, CA 91789

Sale: $868,000

11/26/20240.54 mi

Area:1,330 sqft
Price/sqft:$653
Beds:3
Baths:2
Year Built:
Weight:18.0%

How it Works

1

Meet your local TurboHome agent

We match you with an in-house licensed real estate agent who knows your market
2

We support your home-selling journey

Everything you'd expect your agent to do: pricing, listing, photos, staging, open houses, and negotiating
3

You get big savings

You split the commission with your agent 50/50, saving you thousands compared to a traditional agent
Two iPhones. One with a TurboHome screen that contains a profile photo and 'Meet Kevin' heading. The other with a TurboHome IQ screen with an example Disclosure Summary.
The Mercury News
CBS News
Business Insider
Orange County Register
Silicon Valley
East Bay Times