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Public Storage - 21035 East Washington Avenue, Diamond Bar, CA 91789

Self Storage, Car Storage, RV Storage, Boat Storage 24 - 300 Sq. Ft.
4.8/5 - 394 Reviews
Location:
21035 East Washington Avenue, Diamond Bar, CA 91789
All units
Small
Medium
Large
Parking
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Units Availability
Small Storage Unit
5x10
Self Storage
50 Sq. Ft.
Elevator Access
Swing
$100 - $111/mo
Small Storage Unit
4x6
Self Storage
24 Sq. Ft.
Elevator Access
Roll-Up
First Floor Access
$73/mo
Medium Storage Unit
10x15
Parking
150 Sq. Ft.
Car Storage
Drive-up Access
Outdoor Access
Parking
$111/mo
Medium Storage Unit
10x10
Self Storage
100 Sq. Ft.
Elevator Access
Swing
$165 - $175/mo
Large Storage Unit
15x20
Parking
300 Sq. Ft.
Roll-Up
Drive-up Access
Outdoor Access
Parking
RV Storage
$490/mo
Large Storage Unit
10x25
Parking
250 Sq. Ft.
Boat Storage
Roll-Up
Drive-up Access
Outdoor Access
Parking
RV Storage
$393/mo
Large Storage Unit
10x20
Self Storage
200 Sq. Ft.
Roll-Up
$381/mo
Large Storage Unit
10x20
Self Storage
200 Sq. Ft.
Elevator Access
Swing
$256/mo

Amenities

  • Indoor
  • Drive-Up Access
  • Retail Available
  • Onsite Manager
  • Contactless Renting
  • Security Camera
  • Gate
  • Parking
  • Credit Cards Accepted
  • Elevators
  • First Floor Access
  • Multi-Level Storage
  • Online Payment
  • RV Storage

What customers are saying

4.8/5 - 394 Reviews

Read some helpful reviews of Public Storage at 21035 East Washington Avenue, shared by real renters with genuine experiences and honest opinions.

I had a great experience at Public Storage. The facility is clean, well-maintained, and feels secure. Adrian was very helpful and made the whole process quick and easy. He explained pricing clearly and answered all my questions. Definitely recommend if you’re looking for affordable and reliable storage! ... Read more
Kidd C. - 27 February 2026
Adrian was very helpful throughout the whole process. He was very professional and helped troubleshoot any issues I was having. He made the process very smooth and made me feel my item would be good hands. 10/10 would recommend! ... Read more
Angie H. - 11 January 2026
Had the most positive experience these past few days and made me feel like I was in a safe space. I would like to thank Adrian for making me feel safe and attending to all my needs and questions. This is the first time I rent out a storage and I had no clue how to manage one. Adrian explained step by step and was very detail oriented. Without his knowledge and assistance I would of been lost. Thank you Adrian for being a big help !! Wish there was more people like you in the world !! You made me feel safe !! ... Read more
Fabiola N. - 24 October 2025
I wish I could give it 0 stars because that would better describe my multiple experiences with this location. FIRST: There is never anyone on site despite the office hours listed on website and on listing. At least two days each week there isnt anyone at this location even though ADRIAN lives above the office. When you call on those days and are forced to leave a message you then do not receive a response for 48+ hours. The app they force you to download never works to open/close the gate and they are never in the office, so how does one make anything work. You call corporate and they have absolutley no idea what is going on at each location. The whole system including monthly rates changing wihtout notice is terrible. When you do finally speak with someone, they never seem to know what is going on which is surprising to see ADRIAN receive such praise in the other reviews. ADRIAN is about as good at his job as the app functions properly. ... Read more
Lisa D. - 21 October 2025
Real cool experience. The coolest part is you can open gate with phone. No need to input code. I give them 4 stars. Both employees are super cool & very helpful. I would recommend this public storage to all my family & friends. ???? ... Read more
D.A M. - 1 October 2025
Peter P. - 28 September 2025
Adrian was so nice and helpful. He was willing to show me around and give me more information than I thought I needed. I’ve been to 3 locations and I’m really surprised that each front desk person I’ve talked to is so polite and respectful but makes me feel comfortable at the same time. I’ve also called on the phone for customer service at Public Storage and I must say their customer service is spectacular beyond any company, no matter who I talk to. ... Read more
Holly H. - 7 August 2025
Adrian was extremely helpful and professional. He clearly explained everything I needed to know and gave me a quick, informative tour. The whole process was smooth and efficient thanks to him. A true professional — highly recommended. I've got a parking lot for the car. ... Read more
Danil T. - 31 May 2025
Adrian is a great manager there. He is very diligent in maintaining the facility clean and is always on top of things. He exhibits great customer service and responds to our issues right away. He’s the reason that we continue to rent storage spaces at PS. Bravo! -Charles and Helen ... Read more
Milton W. - 31 May 2025
ZHENG K. - 28 March 2025
Adrian is a person that understand peoples needs, he is friendly, and welcome people. My experience was not too good before him I am happy that he is here now. Well done Adrian! Stay forever, good job. ... Read more
Maria E. - 6 February 2025
Adrian was wonderful. We decided to rent the storage to keep our furniture while our house is renovated. He explained everything in detail and took us to see the space. Appreciate his kindness. W happy to have the space at this location. ... Read more
??? - 23 December 2024
I had a great experience with them! Especially talking to Adrian. I just needed somewhere to store my car for 2 weeks until I ship it and I was able to do it for just $30, I moved the car out on November 31st before being charged for the new month. I was charged again for the next month because of lack of communication on my end about my move out, but they gladly sent me back the money without any problems. Great people, they really work with you ... Read more
precious n. - 2 November 2024
Candice consistently provides exceptional assistance at Public Storage. She willingly addresses any inquiries I have, displaying a genuine willingness to help.In addition, Candice consistently maintains a positive and cheerful demeanor, which further enhances the overall experience. Her upbeat attitude creates a welcoming environment that puts customers at ease. ... Read more
Katie l. - 21 May 2024

Overview

Located at 21035 East Washington Avenue, this Public Storage facility in Diamond Bar offers a wide range of storage solutions with units available in small, medium, and large sizes. Conveniently situated in a residential area known for its spacious homes and family-friendly environment, this facility caters to diverse storage needs, whether you're decluttering your home, downsizing, or storing seasonal items.

This facility comes equipped with modern features like elevators for easy access to upper floors, drive-up access for effortless loading and unloading, and indoor units to shield belongings from outdoor exposure. For added convenience, it offers first floor access units and multi-level storage options. The property also has designated parking spaces and RV storage for larger vehicles. Safety measures include a security camera system and an onsite manager, providing extra peace of mind for renters.

Customers will appreciate the flexibility of contactless renting, online payment, and a variety of moving supplies available for purchase on-site. This Public Storage facility is an excellent choice for homeowners, renters, and businesses in Diamond Bar looking for secure, accessible, and flexible storage options.

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Frequently Asked Questions

There is a wide array of amenities available for the storage units that Public Storage - 21035 East Washington Avenue has to offer. These amenities include Indoor, Drive-Up Access, Retail Available, Onsite Manager, Contactless Renting, Security Camera, Gate, Parking, Credit Cards Accepted, Elevators, First Floor Access, Multi-Level Storage, Online Payment and RV Storage. Most of these amenities can prove to be very useful depending on what you need to store. For example, climate-controlled units can come in handy for keeping sensitive items, drive-up access can make your loading and unloading process easier, and extra security measures will ensure your items are kept safe at all times.

The storage units offered by Public Storage - 21035 East Washington Avenue can satisfy all of your storage needs. Different sizes here range from 24 to 300 square feet. You can go for smaller units if you don't have a lot of items to store, while choosing a larger space is recommended in case you need to store a lot of furniture, bigger items or even vehicles.

The unit size that you should choose obviously depends on how much stuff you need to store. On the one hand, you should think of smaller units (5'x5' or 5'x10') as closets – they can be used to store chairs, lamps, moving boxes and sports equipment, along with smaller pieces of furniture, books and documents.

On the other hand, the 10'x10' and 10'x15' spaces are good for storing larger items of furniture, bicycles and a larger number of possessions. If you need even more space, then 10'x20' and 10'x30' units can easily accommodate the contents of an entire 3- or 4-bedroom house.

Storage units offered by Public Storage - 21035 East Washington Avenue come at a variety of prices, starting from $73 per month for typically smaller units. However, larger spaces can set you back up to $490 a month.

We know that when it comes to self storage, there is nothing more important than quickness and accessibility. Drive-up access is an extremely convenient amenity, as you can park your vehicle right next to your unit, making it significantly easier to load and unload the items you will use storage for. However, drive-up storage units tend to be outdoors, so you might consider indoor storage spaces with climate control if you're looking to keep temperature-sensitive items in peak condition.

Yes, you might, depending on what you need to put in storage. Climate-controlled spaces keep temperatures and humidity levels consistent all the time, which means they are perfect for storing sensitive items. Seeing that a whole host of things can be damaged by varying temperatures and excessive moisture, many people choose to rent climate-controlled units for personal items such as documents, photographs, paintings, collectibles, electronics, wooden furniture, antiques and even vehicles. If you're looking to store such items that are valuable to you, consider renting a climate-controlled unit!