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Extra Space Storage - 3939 Castro Valley Blvd, Castro Valley, CA 94546

Self Storage 20 - 300 Sq. Ft.
4.8/5 - 581 Reviews
Location:
3939 Castro Valley Blvd, Castro Valley, CA 94546
24/7 ACCESS
All units
Small
Medium
Large
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Units Availability
Small Storage Unit
9x10
Self Storage
90 Sq. Ft.
$273/mo
Small Storage Unit
9x10
Self Storage
90 Sq. Ft.
Climate-Controlled
Elevator
$227/mo
Small Storage Unit
8x10
Self Storage
80 Sq. Ft.
Climate-Controlled
$225/mo
Small Storage Unit
8x10
Self Storage
80 Sq. Ft.
Climate-Controlled
Elevator
$193/mo
Small Storage Unit
8x9
Self Storage
72 Sq. Ft.
$256/mo
Small Storage Unit
8x9
Self Storage
72 Sq. Ft.
Climate-Controlled
Elevator
$103 - $180/mo
Small Storage Unit
8x8
Self Storage
64 Sq. Ft.
Climate-Controlled
Elevator
$163/mo
Small Storage Unit
7x14
Self Storage
98 Sq. Ft.
Climate-Controlled
Elevator
$246/mo
Small Storage Unit
7x10
Self Storage
70 Sq. Ft.
$251/mo
Small Storage Unit
7x10
Self Storage
70 Sq. Ft.
Climate-Controlled
$197/mo
Small Storage Unit
7x8
Self Storage
56 Sq. Ft.
Climate-Controlled
$167/mo
Small Storage Unit
7x7
Self Storage
49 Sq. Ft.
$196/mo
Small Storage Unit
7x7
Self Storage
49 Sq. Ft.
Climate-Controlled
$153/mo
Small Storage Unit
7x7
Self Storage
49 Sq. Ft.
Climate-Controlled
Elevator
$136/mo
Small Storage Unit
6x10
Self Storage
60 Sq. Ft.
Climate-Controlled
Elevator
$158/mo
Small Storage Unit
6x6
Self Storage
36 Sq. Ft.
Climate-Controlled
Elevator
$105/mo
Small Storage Unit
6x4
Self Storage
24 Sq. Ft.
Climate-Controlled
Elevator
$80/mo
Small Storage Unit
5x7
Self Storage
35 Sq. Ft.
$152/mo
Small Storage Unit
5x7
Self Storage
35 Sq. Ft.
Climate-Controlled
$60 - $120/mo
Small Storage Unit
5x6
Self Storage
30 Sq. Ft.
Climate-Controlled
Elevator
$94/mo
Small Storage Unit
5x5
Self Storage
25 Sq. Ft.
Climate-Controlled
$47/mo
Small Storage Unit
5x5
Self Storage
25 Sq. Ft.
Climate-Controlled
Elevator
$45/mo
Small Storage Unit
4x10
Self Storage
40 Sq. Ft.
Climate-Controlled
$132/mo
Small Storage Unit
4x10
Self Storage
40 Sq. Ft.
Climate-Controlled
Elevator
$117/mo
Small Storage Unit
4x8
Self Storage
32 Sq. Ft.
Climate-Controlled
Elevator
$99/mo
Small Storage Unit
4x7
Self Storage
28 Sq. Ft.
$147/mo
Small Storage Unit
4x6
Self Storage
24 Sq. Ft.
Climate-Controlled
$90/mo
Small Storage Unit
4x6
Self Storage
24 Sq. Ft.
Climate-Controlled
Elevator
$80/mo
Small Storage Unit
4x5
Self Storage
20 Sq. Ft.
Climate-Controlled
$79/mo
Small Storage Unit
4x5
Self Storage
20 Sq. Ft.
Climate-Controlled
Elevator
$70/mo
Medium Storage Unit
16x9
Self Storage
144 Sq. Ft.
Climate-Controlled
Elevator
$322/mo
Medium Storage Unit
10x16
Self Storage
160 Sq. Ft.
Climate-Controlled
$491/mo
Medium Storage Unit
10x16
Self Storage
160 Sq. Ft.
Climate-Controlled
Elevator
$351/mo
Medium Storage Unit
10x14
Self Storage
140 Sq. Ft.
$383/mo
Medium Storage Unit
10x10
Self Storage
100 Sq. Ft.
$421/mo
Medium Storage Unit
9x16
Self Storage
144 Sq. Ft.
Climate-Controlled
Elevator
$322/mo
Medium Storage Unit
9x12
Self Storage
108 Sq. Ft.
Climate-Controlled
$367/mo
Medium Storage Unit
9x12
Self Storage
108 Sq. Ft.
$316/mo
Medium Storage Unit
8x22
Self Storage
176 Sq. Ft.
$453/mo
Medium Storage Unit
8x20
Self Storage
160 Sq. Ft.
$423 - $492/mo
Medium Storage Unit
8x19
Self Storage
152 Sq. Ft.
$409/mo
Medium Storage Unit
8x18
Self Storage
144 Sq. Ft.
Climate-Controlled
Elevator
$322/mo
Medium Storage Unit
8x16
Self Storage
128 Sq. Ft.
$359 - $423/mo
Medium Storage Unit
8x16
Self Storage
128 Sq. Ft.
Climate-Controlled
Elevator
$297/mo
Medium Storage Unit
8x14
Self Storage
112 Sq. Ft.
$318/mo
Medium Storage Unit
8x13
Self Storage
104 Sq. Ft.
Climate-Controlled
Elevator
$253/mo
Large Storage Unit
15x20
Self Storage
300 Sq. Ft.
$773/mo
Large Storage Unit
10x25
Self Storage
250 Sq. Ft.
Climate-Controlled
Elevator
$472/mo

Amenities

  • Climate-Controlled
  • Indoor
  • 24 hour access
  • Drive-Up Access
  • Retail Available
  • Onsite Manager
  • Security Camera
  • Gate
  • Credit Cards Accepted
  • Elevators
  • Multi-Level Storage
  • Online Payment

What customers are saying

4.8/5 - 581 Reviews

Read some helpful reviews of Extra Space Storage at 3939 Castro Valley Blvd, shared by real renters with genuine experiences and honest opinions.

Always clean and easy to use. The staff were helpful quickly with any questions we had. The elevators occasionally go out in the building I was using but I always received a notification if they are out and when they're back in order so I can plan accordingly. At one point I switched to a smaller unit and the staff were very helpful in that process. Definitely will use this facility again! ... Read more
Heather J. - 16 January 2026
I'm not impressed by this place they were charging my mother ( a senior ) almost $300 a month for their smallest unit. And there's not even anyone there on Sunday. When I trying to get my mother's stuff out. Would not recommend ... Read more
KC K. - 26 September 2025
Place is kept clean, and a person is usually on duty in the office. Very well maintained and feels safe. I would recommend this company, we used two different storage companies before.we moved our things to CV. Both prior storage facilities were not a good experience, but since changing we are super satisfied. N&J of San Leandro ... Read more
Judi V. - 22 September 2025
Love this extra storage. Love the fact that all I had to do was call and help was right there when I got lost the first time trying to find the correct storage area Thank you so much love the prices also ... Read more
Sandra W. - 22 September 2025
Stephan Has help Alma with a new storage. He help me with all the requred Info. Very gentlemen. Epg For all the unit that i had rented informent I would recommend this storage building in castro valley. I'm very lucky to have a unit here.i thank the company for having Stephan here to help With all needed info ... Read more
Gloria W. - 23 August 2025
Steven S. - 21 June 2025
Came here after a break in at Public Storage and the service was so much better. We really appreciate the help the staff gave us with moving in quickly and the fact that someone lives on property really does give that little bit of extra security that we definitely needed at the time. ... Read more
Sakkari H. - 9 May 2025
I am so happy I chose Extra Space, It is very convenient because I live next door, so I can back and forth easily. But the storage facility is amazing, very clean, well lit. The process to rent, was very easy also. I would definitely recommend them. ... Read more
elmy k. - 4 April 2025
AM - 3 April 2025
The facility is well-maintained. Though I have experienced a break in since renting a space here, this was the only incident. As with many corporations I have noticed corporate greed set into this facility. The unnecessary and often rent hikes have made me wonder why I am storing anything in the first place. ... Read more
Ricky L. - 5 January 2025
Renting a storage space here is fast and easy. Customer service is great, Stephan was helpful and answered all of our questions. He helped us price out units at a few of their nearby sites, but we decided to go with CV because of the pricing, convenient location, and the facilities are clean and well-maintained. ... Read more
Betty T. - 29 May 2024
I’ve been to extra space storage a few times over the last 25 yrs. Recently I went back to inquire about renting a new space. Stephan at CV office was so helpful and courteous. He took me out to show me size differences and locations of each space. He was very knowledgeable and delightful. Even though the CV office didn’t have the available space I needed, he helped me find a different location that did. I will be renting soon but can’t recommend these people and this company highly enough. They truly care about you and not just renting a space. Stephan went above and beyond and I’m truly grateful! ... Read more
Carla H. - 24 May 2024

Overview

Located at 3939 Castro Valley Blvd in Castro Valley, CA, this Extra Space Storage facility offers small, medium, and large units to accommodate a range of storage needs. Whether you're storing seasonal items, furniture, or business inventory, this location is equipped to help. With climate-controlled units, your belongings are protected against the Bay Area's humidity and fluctuating temperatures, making it ideal for sensitive items like electronics, documents, and antiques.

This facility features indoor units and drive-up access, providing options for both convenience and ease of use. The property is multi-level with elevators available, ensuring hassle-free access to your storage unit. Enhanced safety measures include security cameras, a gated entry, and an onsite manager for added peace of mind. For those with busy schedules, 24-hour access ensures you can retrieve or store items when it suits you.

Customers can take advantage of online payment options and pay with credit cards for added convenience. Plus, moving supplies are available for purchase on-site, making it easy to pack and protect your items. This facility is a great choice for residents and businesses in Castro Valley seeking secure, accessible, and flexible storage solutions.

Nearby Storage Units

Storage units in nearby cities

Want to see how Castro Valley, CA, compares to other places? There are plenty of great options nearby. Ashland, CA, 5 miles away, has 1 self storage facility with rents starting from $122/month. Or you could drive to San Ramon, CA, just 6 miles distant to find other options, where the cheapest units in the 7 facilities there can be rented for $59/month. In Dublin, CA, just 7 miles away, there are 4 facilities available, offering rents as low as $88/month. Further out, San Lorenzo, CA (7 miles away), and Hayward, CA (7 miles away), have 4 and 12 facilities, with minimum rents of $56 and $27, respectively.

Storage units in Ashland, CA Within a 5-mile radius
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Storage units in San Ramon, CA Within a 6-mile radius
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Storage units in Dublin, CA Within a 7-mile radius
4 Facilities
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Storage units in San Lorenzo, CA Within a 7-mile radius
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Storage units in Hayward, CA Within a 7-mile radius
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Storage units in San Leandro, CA Within a 7-mile radius
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From $58/mo
Storage units in Union City, CA Within a 8-mile radius
4 Facilities
From $73/mo
Storage units in Pleasanton, CA Within a 9-mile radius
6 Facilities
From $31/mo
Storage units in Walnut Creek, CA Within a 13-mile radius
4 Facilities
From $84/mo
Storage units in Fremont, CA Within a 14-mile radius
14 Facilities
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Storage units in Newark, CA Within a 14-mile radius
5 Facilities
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Storage units in Alameda, CA Within a 14-mile radius
7 Facilities
From $18/mo
Storage units in Lafayette, CA Within a 14-mile radius
1 Facility
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Storage units in Emeryville, CA Within a 17-mile radius
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Storage units in Pleasant Hill, CA Within a 17-mile radius
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Storage units in Foster City, CA Within a 17-mile radius
2 Facilities
From $50/mo
Storage units in Berkeley, CA Within a 18-mile radius
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From $35/mo
Storage units in East Palo Alto, CA Within a 18-mile radius
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From $73/mo
Storage units in Menlo Park, CA Within a 19-mile radius
2 Facilities
From $95/mo
Storage units in San Mateo, CA Within a 20-mile radius
8 Facilities
From $50/mo

Check out storage units in trending cities

Still looking for the ideal storage unit? For more great self storage options you wouldn't have to cross the state border: units can be leased in Los Angeles, CA and San Diego, CA, starting from $15 and $15, respectively. Even more storage is available and with low starting rents, in San Jose, CA ($11), San Francisco, CA ($29) and Fresno, CA ($30).

Storage units in Los Angeles, CA
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Storage units in San Diego, CA
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Storage units in San Jose, CA
65 Facilities
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Storage units in San Francisco, CA
23 Facilities
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Storage units in Fresno, CA
41 Facilities
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Storage units in Sacramento, CA
76 Facilities
From $15/mo
Storage units in Oakland, CA
21 Facilities
From $44/mo
Storage units in Bakersfield, CA
51 Facilities
From $33/mo
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21 Facilities
From $45/mo
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36 Facilities
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Browse storage units in all California cities.

Frequently Asked Questions

There is a wide array of amenities available for the storage units that Extra Space Storage - 3939 Castro Valley Blvd has to offer. These amenities include Climate-Controlled, Indoor, 24 hour access, Drive-Up Access, Retail Available, Onsite Manager, Security Camera, Gate, Credit Cards Accepted, Elevators, Multi-Level Storage and Online Payment. 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 Extra Space Storage - 3939 Castro Valley Blvd can satisfy all of your storage needs. Different sizes here range from 20 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 Extra Space Storage - 3939 Castro Valley Blvd come at a variety of prices, starting from $45 per month for typically smaller units. However, larger spaces can set you back up to $773 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!