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

Self Storage 20 - 300 Sq. Ft.
★★★★★
★★★★★
4.8/5 - 560 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.
$424/mo
Small Storage Unit
9x10
Self Storage
90 Sq. Ft.
Climate-Controlled
Elevator Access
$288/mo
Small Storage Unit
8x10
Self Storage
80 Sq. Ft.
Climate-Controlled
$291/mo
Small Storage Unit
8x10
Self Storage
80 Sq. Ft.
Climate-Controlled
Elevator Access
$252/mo
Small Storage Unit
8x9
Self Storage
72 Sq. Ft.
$424/mo
Small Storage Unit
8x9
Self Storage
72 Sq. Ft.
Climate-Controlled
Elevator Access
$139 - $187/mo
Small Storage Unit
8x8
Self Storage
64 Sq. Ft.
Climate-Controlled
Elevator Access
$212/mo
Small Storage Unit
7x14
Self Storage
98 Sq. Ft.
Climate-Controlled
Elevator Access
$304/mo
Small Storage Unit
7x10
Self Storage
70 Sq. Ft.
$424/mo
Small Storage Unit
7x10
Self Storage
70 Sq. Ft.
Climate-Controlled
$263/mo
Small Storage Unit
7x8
Self Storage
56 Sq. Ft.
Climate-Controlled
$223/mo
Small Storage Unit
7x7
Self Storage
49 Sq. Ft.
$337/mo
Small Storage Unit
7x7
Self Storage
49 Sq. Ft.
Climate-Controlled
$197/mo
Small Storage Unit
7x7
Self Storage
49 Sq. Ft.
Climate-Controlled
Elevator Access
$170/mo
Small Storage Unit
6x10
Self Storage
60 Sq. Ft.
Climate-Controlled
Elevator Access
$198/mo
Small Storage Unit
6x6
Self Storage
36 Sq. Ft.
Climate-Controlled
Elevator Access
$138/mo
Small Storage Unit
6x4
Self Storage
24 Sq. Ft.
Climate-Controlled
Elevator Access
$102/mo
Small Storage Unit
5x7
Self Storage
35 Sq. Ft.
$263/mo
Small Storage Unit
5x7
Self Storage
35 Sq. Ft.
Climate-Controlled
$89 - $156/mo
Small Storage Unit
5x6
Self Storage
30 Sq. Ft.
Climate-Controlled
Elevator Access
$120/mo
Small Storage Unit
5x5
Self Storage
25 Sq. Ft.
Climate-Controlled
$70/mo
Small Storage Unit
5x5
Self Storage
25 Sq. Ft.
Climate-Controlled
Elevator Access
$58/mo
Small Storage Unit
4x10
Self Storage
40 Sq. Ft.
Climate-Controlled
$170/mo
Small Storage Unit
4x10
Self Storage
40 Sq. Ft.
Climate-Controlled
Elevator Access
$149/mo
Small Storage Unit
4x8
Self Storage
32 Sq. Ft.
Climate-Controlled
Elevator Access
$126/mo
Small Storage Unit
4x7
Self Storage
28 Sq. Ft.
$245/mo
Small Storage Unit
4x6
Self Storage
24 Sq. Ft.
Climate-Controlled
$118/mo
Small Storage Unit
4x6
Self Storage
24 Sq. Ft.
Climate-Controlled
Elevator Access
$102/mo
Small Storage Unit
4x5
Self Storage
20 Sq. Ft.
Climate-Controlled
$103/mo
Small Storage Unit
4x5
Self Storage
20 Sq. Ft.
Climate-Controlled
Elevator Access
$89/mo
Medium Storage Unit
16x9
Self Storage
144 Sq. Ft.
Climate-Controlled
Elevator Access
$392/mo
Medium Storage Unit
10x16
Self Storage
160 Sq. Ft.
Climate-Controlled
$471/mo
Medium Storage Unit
10x16
Self Storage
160 Sq. Ft.
Climate-Controlled
Elevator Access
$424/mo
Medium Storage Unit
10x14
Self Storage
140 Sq. Ft.
$507/mo
Medium Storage Unit
10x10
Self Storage
100 Sq. Ft.
$529/mo
Medium Storage Unit
9x16
Self Storage
144 Sq. Ft.
Climate-Controlled
Elevator Access
$392/mo
Medium Storage Unit
9x12
Self Storage
108 Sq. Ft.
$424/mo
Medium Storage Unit
9x12
Self Storage
108 Sq. Ft.
Climate-Controlled
$371/mo
Medium Storage Unit
8x22
Self Storage
176 Sq. Ft.
$600/mo
Medium Storage Unit
8x20
Self Storage
160 Sq. Ft.
$559 - $617/mo
Medium Storage Unit
8x19
Self Storage
152 Sq. Ft.
$539/mo
Medium Storage Unit
8x18
Self Storage
144 Sq. Ft.
Climate-Controlled
Elevator Access
$392/mo
Medium Storage Unit
8x16
Self Storage
128 Sq. Ft.
$475 - $530/mo
Medium Storage Unit
8x16
Self Storage
128 Sq. Ft.
Climate-Controlled
Elevator Access
$359/mo
Medium Storage Unit
8x14
Self Storage
112 Sq. Ft.
$426/mo
Medium Storage Unit
8x13
Self Storage
104 Sq. Ft.
Climate-Controlled
Elevator Access
$322/mo
Large Storage Unit
15x20
Self Storage
300 Sq. Ft.
$803/mo
Large Storage Unit
10x25
Self Storage
250 Sq. Ft.
Climate-Controlled
Elevator Access
$730/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 - 560 Reviews

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

★★★★★
★★★★★
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

This Extra Space Storage facility, located at 3939 Castro Valley Blvd in Castro Valley, CA, offers a range of unit sizes, including small, medium, and large options to suit varying storage needs. With climate-controlled units available, this facility is ideal for protecting sensitive belongings from the Bay Area’s fluctuating temperatures and occasional humidity.

Convenient features like drive-up access, indoor access, and multi-level storage ensure easy movement of items, while elevators simplify loading and unloading for upper-level units. Security is a priority at this facility, with a gated entry, security cameras, and an onsite manager providing peace of mind. The property also allows 24-hour access, making it perfect for those with unpredictable schedules or urgent storage needs.

For added convenience, this facility offers flexible payment options, including online payment and acceptance of credit cards. The availability of moving supplies for purchase onsite further simplifies the storage process, making this Extra Space Storage facility a great choice for individuals and families looking for secure and accessible storage in Castro Valley.

Nearby Storage Units

Storage units in nearby cities

Here is how Castro Valley, CA, compares to other nearby cities. Overall, there are many other great self storage opportunities in the area. Ashland, CA, is just 5 miles away and has 1 storage facility. Monthly rents there start at $80. However, you could also drive to San Ramon, CA, which is 6 miles away and which also offers storage units for as little as $69. Dublin, CA is also just 7 miles distant. Listings there show no less than 4 facilities, with unit prices starting from $40. Looking a bit further away, storage facilities in San Lorenzo, CA, and Hayward, CA, have multiple types of units available, with monthly costs starting at $64 and $23, respectively.

Storage units in Ashland, CA Within a 5-mile radius
1 Facility
From $80/mo
Storage units in San Ramon, CA Within a 6-mile radius
7 Facilities
From $69/mo
Storage units in Dublin, CA Within a 7-mile radius
4 Facilities
From $40/mo
Storage units in San Lorenzo, CA Within a 7-mile radius
4 Facilities
From $64/mo
Storage units in Hayward, CA Within a 7-mile radius
12 Facilities
From $23/mo
Storage units in San Leandro, CA Within a 7-mile radius
12 Facilities
From $24/mo
Storage units in Union City, CA Within a 8-mile radius
4 Facilities
From $88/mo
Storage units in Danville, CA Within a 9-mile radius
1 Facility
From $117/mo
Storage units in Pleasanton, CA Within a 9-mile radius
6 Facilities
From $30/mo
Storage units in Moraga, CA Within a 10-mile radius
1 Facility
From $62/mo
Storage units in Walnut Creek, CA Within a 13-mile radius
4 Facilities
From $84/mo
Storage units in Newark, CA Within a 14-mile radius
5 Facilities
From $47/mo
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
From $101/mo
Storage units in Clayton, CA Within a 15-mile radius
1 Facility
From $59/mo
Storage units in Emeryville, CA Within a 17-mile radius
3 Facilities
From $22/mo
Storage units in Pleasant Hill, CA Within a 17-mile radius
1 Facility
From $83/mo
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
6 Facilities
From $37/mo
Storage units in East Palo Alto, CA Within a 18-mile radius
3 Facilities
From $45/mo

Check out storage units in trending cities

If you want to see how your city compares to others, you can start by checking out other facilities in trending cities. A wide array of storage units can be leased in Los Angeles, CA, San Diego, CA and San Jose, CA, where sizes and amenities may vary. Monthly rents for units in these cities are as low as $15 and $17, respectively.

Storage units in Los Angeles, CA
206 Facilities
From $15/mo
Storage units in San Diego, CA
71 Facilities
From $15/mo
Storage units in San Jose, CA
65 Facilities
From $17/mo
Storage units in Sacramento, CA
75 Facilities
From $19/mo
Storage units in San Francisco, CA
23 Facilities
From $32/mo
Storage units in Fresno, CA
41 Facilities
From $29/mo
Storage units in Bakersfield, CA
51 Facilities
From $16/mo
Storage units in Long Beach, CA
27 Facilities
From $40/mo
Storage units in Oakland, CA
20 Facilities
From $19/mo
Storage units in Stockton, CA
36 Facilities
From $19/mo
Storage units in Anaheim, CA
21 Facilities
From $40/mo
Storage units in Riverside, CA
35 Facilities
From $31/mo
Storage units in Santa Ana, CA
19 Facilities
From $20/mo
Storage units in Irvine, CA
29 Facilities
From $20/mo
Storage units in Chula Vista, CA
20 Facilities
From $17/mo
Storage units in Modesto, CA
27 Facilities
From $23/mo
Storage units in San Bernardino, CA
16 Facilities
From $35/mo
Storage units in Fontana, CA
18 Facilities
From $41/mo
Storage units in Fremont, CA
14 Facilities
From $25/mo
Storage units in Santa Clarita, CA
24 Facilities
From $31/mo
Browse storage units in all California cities.

Frequently Asked Questions

Storage units available at Extra Space Storage - 3939 Castro Valley Blvd include the following amenities: 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. Depending on what you need to put away in storage, you can discover there are some things you absolutely need, so make sure you check with the facility manager that you'll find everything you need on site.

This particular storage facility provides self storage units of different sizes, ranging from 20 to 300 square feet. Space is not an issue! If you have more belongings to store, or simply bulkier items or even vehicles, you should go for larger storage units.

You already know how much stuff you need to put in self storage, so figuring out the unit size you need is the next step. Smaller units such as 5'x5' or 5'x10' spaces can usually be filled with the amount of items you would normally store in a closet: a few chairs and lamps, sports equipment, garden tools and some boxes.

Moving on to larger sizes, imagine the 10'x10' and 10'x15' units as similar to a bedroom or a living room – larger pieces of furniture, sturdier equipment and bicycles can fit here. Finally, a 10'x20' unit has enough space for the contents of a 3-bedroom house, while the larger 10'x30' space easily accommodates the contents of a loaded semi-truck.

Monthly prices for units offered by Extra Space Storage - 3939 Castro Valley Blvd start from $58 and can go up to $803 for larger spaces.

Accessibility and quickness are key when it comes to storage, so drive-up storage units are generally regarded as very convenient. Pull your car right up to your storage space, load, unload, and you're good to go! However, if you're mostly storing temperature-sensitive items, you should rather consider indoor storage units.

Climate-controlled units maintain consistent temperatures and humidity levels all year round, making them perfect for all your sensitive items. Moisture and varying temperatures can damage a whole host of things, and that is why a lot of people choose to use climate-controlled units to store items like wooden furniture, electronics, artwork, documents and photographs, collectibles, antiques, etc. If the belongings you're storing are important to you, you should consider renting a climate-controlled unit.