Listed by CHENGLIANG YAO, RE/MAX PREMIER/ARCADIA, (626) 229-2200
20128 Diehl St
Walnut, CA 91789
4 Beds
4 Baths
2,910 sqft
4 Beds
4 Baths
2,910 sqft
Home Highlights
Parking
2 Car Garage
Outdoor
Patio
Climate Control
Heating & Cooling
HOA
None
Price/Sqft
$590
Listed
10 days ago
Local Information
- Map ViewExplore the area around 20128 Diehl St.
- Schools1 Elementary School1 Middle School1 High School
- Shop & Eat
-- mins to
About this House
Welcome to this versatile property in the highly desirable City of Walnut! Extensively renovated by the current owner, truly move-in ready!
This unique single-family residence has been thoughtfully configured into two separate living areas, offering exceptional flexibility for owner-users, multi-generational living, or potential rental income. Designed for easy maintenance, the backyard features a combination of concrete patio space and a grassy area, providing both convenience and outdoor enjoyment.
A separate living area with its own private entrance is ideal for extended family, guests, a home office, or potential rental opportunities. Conveniently located directly across from Vejar Elementary School, approximately lesser than 1 mile to highly rated Suzanne Middle School and Walnut High school, this home offers an outstanding location for families.
Whether you’re looking for a primary residence with flexible living space or an investment opportunity, this property offers exceptional versatility and value. Don’t miss this incredible opportunity!
This unique single-family residence has been thoughtfully configured into two separate living areas, offering exceptional flexibility for owner-users, multi-generational living, or potential rental income. Designed for easy maintenance, the backyard features a combination of concrete patio space and a grassy area, providing both convenience and outdoor enjoyment.
A separate living area with its own private entrance is ideal for extended family, guests, a home office, or potential rental opportunities. Conveniently located directly across from Vejar Elementary School, approximately lesser than 1 mile to highly rated Suzanne Middle School and Walnut High school, this home offers an outstanding location for families.
Whether you’re looking for a primary residence with flexible living space or an investment opportunity, this property offers exceptional versatility and value. Don’t miss this incredible opportunity!
Open House
Saturday, August 01
2:00 PM to 5:00 PM
Sunday, August 02
10:30 AM to 1:30 PM
Home Details for 20128 Diehl St
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Interior Details Number of Rooms: 3Types of Rooms: Family Room, Laundry |
Beds & Baths Number of Bedrooms: 4Main Level Bedrooms: 1Number of Bathrooms: 4Number of Bathrooms (full): 4Number of Bathrooms (main level): 1 |
Dimensions and Layout Living Area: 2910 Square Feet |
Appliances & Utilities Appliances: Electric Cooktop, Gas CooktopLaundry: Inside,Outside |
Heating & Cooling Heating: CentralHas CoolingAir Conditioning: Central Air,DualHas HeatingHeating Fuel: Central |
Fireplace & Spa Fireplace: NoneSpa: NoneNo FireplaceNo Spa |
Windows, Doors, Floors & Walls Common Walls: 2+ Common Walls |
Levels, Entrance, & Accessibility Stories: 2Number of Stories: 2Levels: TwoEntry Location: front door |
View No ViewView: None |
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Exterior Home Features Patio / Porch: PatioNo Private Pool |
Parking & Garage Number of Garage Spaces: 2Number of Covered Spaces: 2Has a GarageHas an Attached GarageParking Spaces: 2Parking: Garage Attached |
Pool Pool: None |
Frontage Not on Waterfront |
Water & Sewer Sewer: Public Sewer |
Surface & Elevation Elevation Units: Feet |
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Cumulative Days on Market: 8Days on Market: 10 |
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Year Built Year Built: 2020 |
Property Type / Style Property Type: ResidentialProperty Subtype: Single Family ResidenceStructure Type: HouseArchitecture: House |
Building Not a New ConstructionAttached To Another StructureNo Additional Parcels |
Property Information Parcel Number: 8720002010 |
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Price List Price: $1,718,000Price Per Sqft: $590 |
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MLS Status: Active |
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Direction & Address City: Walnut |
School Information Elementary School: VejarJr High / Middle School: SuzanneHigh School: WalnutHigh School District: Walnut Valley Unified |
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Listing Agent Listing ID: WS26144271 |
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Community Features: SidewalksNot Senior CommunityUnits in Building: 1 |
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Association for this Listing: California Regional MLSHOA Fee: No HOA Fee |
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Lot Area: 7649 sqft |
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Special Conditions: Standard |
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Listing Terms: Cash, Cash to New Loan, Conventional, 1031 Exchange |
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Mls Number: WS26144271Living Area Range Units: Square FeetAttribution Contact: 626-615-0493Activation Date: Wed Jul 22 2026Common Interest: NoneStart Showing Date: Wed Jul 22 2026Universal Property Id: US-06037-N-8720002010-R-N |
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SidewalksSource Internet Entire Listing Display |
Last check for updates: about 8 hours ago
Listing Provided by: CHENGLIANG YAO DRE #02149666, (626) 615-0493
RE/MAX PREMIER/ARCADIA
Originating MLS: California Regional MLS
Source: CRMLS, MLS#WS26144271
Also Listed on CRMLS.
Market trends in Walnut
Last updated June 2026
Avg. sale price
—
Sale-to-List Price
—
Price per sq ft
—
Available listings
75
16MoM
Price History for 20128 Diehl St
| Date | Price | Event | Source |
|---|---|---|---|
| 07/22/2026 | $1,718,000 | Listed For Sale | CRMLS #WS26144271 |
| 12/15/2020 | $1,100,000 | Sold | CRMLS #WS20160721 |
| 10/14/2020 | $1,157,000 | Pending | Agent Provided |
| 08/09/2020 | $1,157,000 | PriceChange | Agent Provided |
| 06/09/2020 | $1,237,000 | PriceChange | Agent Provided |
| 05/08/2020 | $1,268,000 | Listed For Sale | Agent Provided |
| 04/02/2018 | $612,500 | Sold | N/A |
| 02/12/2018 | $629,000 | Pending | Agent Provided |
| 02/06/2018 | $629,000 | PriceChange | Agent Provided |
| 01/21/2018 | $649,000 | Listed For Sale | Agent Provided |
| 02/27/2007 | $505,000 | Sold | N/A |
| 03/06/2006 | $529,000 | Sold | N/A |
| 11/01/2005 | $360,000 | Sold | N/A |
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Property Tax and Assessment
| Year | 2025 |
|---|---|
| Tax | $14,936 |
| Assessment | $1,190,673 |
Home facts updated by county records
Comparable Sales for 20128 Diehl St
Address | Distance | Property Type | Sold Price | Sold Date | Bed | Bath | Sqft |
|---|---|---|---|---|---|---|---|
0.13 | Single-Family Home | $1,260,000 | 08/01/25 | 5 | 3 | 2,267 | |
0.32 | Single-Family Home | $1,272,000 | 10/10/25 | 4 | 3 | 1,992 | |
0.27 | Single-Family Home | $1,200,000 | 08/12/25 | 5 | 3 | 1,963 | |
0.22 | Single-Family Home | $1,075,000 | 10/27/25 | 4 | 2 | 1,576 | |
0.05 | Single-Family Home | $929,800 | 08/28/25 | 3 | 2 | 1,144 | |
0.42 | Single-Family Home | $1,180,000 | 12/22/25 | 4 | 2.5 | 2,015 | |
0.19 | Single-Family Home | $978,000 | 10/07/25 | 3 | 2 | 1,576 | |
0.32 | Single-Family Home | $1,130,000 | 10/15/25 | 4 | 2 | 1,470 | |
0.44 | Single-Family Home | $1,200,000 | 05/04/26 | 4 | 3 | 1,859 | |
0.29 | Single-Family Home | $1,080,000 | 07/09/26 | 3 | 2 | 1,662 |
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Assigned Schools
These are the assigned schools for 20128 Diehl St.
- Suzanne Middle School
- 6-8
- Public
- 1190 Students
10/10GreatSchools RatingParent Rating AverageAbsolutely atrocious. Students were not taught the difference between right and wrong. Teachers do absolutely nothing to stop bullying. Also, according to the office manager, my kid- along with a few others are the only ones that passed the state tests.Parent Review7y ago - Vejar Elementary School
- K-5
- Public
- 631 Students
8/10GreatSchools RatingParent Rating AverageThis is our 3rd year at this school (k-2nd) two of our children currently attend. We love the staff, we love how involved the principal is, and have had some great luck with teachers. My children are truly cared for and we are looking forward to my daughter starting TK next year.Parent Review4y ago - Walnut High School
- 9-12
- Public
- 2148 Students
10/10GreatSchools RatingParent Rating AverageThis is my last year in high school for me but that doesn’t mean I can forget about walnut high school. Through out my years at walnut high school I have learned a lot from them and that is because of the counselors, our teachers and principal. Without them we as students wouldn’t have gone far in high school. All of the sports and really good because of the couches we have and there dedication to the team and to the school. So I would definitely recommend walnut high school for your kids.Student Review5y ago 
Check out schools near 20128 Diehl St.
What Locals Say about Walnut
At least 124 Trulia users voted on each feature.
88 % Say there are sidewalks
88 % Say parking is easy
81 % Say car is needed
81 % Say yards are well-kept
80 % Say it's dog friendly
75 % Say it's quiet
72 % Say streets are well-lit
68 % Say people would walk alone at night
63 % Say it's walkable to grocery stores
63 % Say there's holiday spirit
62 % Say there's wildlife
62 % Say they plan to stay for at least 5 years
47 % Say neighbors are friendly
44 % Say it's walkable to restaurants
44 % Say kids play outside
29 % Say there are community events
Sourced by Trulia users. Learn more about our methodology.
LGBTQ Local Legal Protections
LGBTQ Local Legal Protections
CHENGLIANG YAO, RE/MAX PREMIER/ARCADIA
Agent Phone: (626) 615-0493
The multiple listing data appearing on this website, or contained in reports produced therefrom, is owned and copyrighted by California Regional Multiple Listing Service, Inc. ("CRMLS") and is protected by all applicable copyright laws. Information provided is for viewer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties the viewer may be interested in purchasing. All listing data, including but not limited to square footage and lot size is believed to be accurate, but the listing Agent, listing Broker and CRMLS and its affiliates do not warrant or guarantee such accuracy. The viewer should independently verify the listed data prior to making any decisions based on such information by personal inspection and/or contacting a real estate professional.
Based on information from California Regional Multiple Listing Service, Inc. as of 2026-08-01 00:15:06 PDT and /or other sources. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by broker or MLS. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information
Based on information from California Regional Multiple Listing Service, Inc. as of 2026-08-01 00:15:06 PDT and /or other sources. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by broker or MLS. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information
20128 Diehl St, Walnut, CA 91789 is a 4 bedroom, 4 bathroom, 2,910 sqft single-family home built in 2020. This property is currently available for sale and was listed by CRMLS on Jul 20, 2026. The MLS # for this home is MLS# WS26144271.