Extra Space Storage - 8321 - National City - 20th St

Eduardo Zamora

⭐⭐⭐⭐⭐ I had a great experience at Extra Space Storage thanks to Jacob. He was friendly, professional, and incredibly helpful from start to finish. Jacob took the time to explain all my options, answered every question clearly, and made the whole process quick and stress-free. Excellent customer service—highly recommend asking for Jacob if you need storage!

Joseph F

Jacob and Michael are AMAZING! They’re super knowledgeable in everything regarding storage AND they’re extremely nice. They helped me out, and made everything quick and easy. I HIGHLY recommend ESS in National City for your storage needs!

Justen Powell

I visited Extra and it was perfect timing because I was helped by Micheal. I was in a pinch and really needed to urgently find space while waiting to move into a new apartment. He made the process clean and simple. Thanks again I’m definitely recommending this location and Micheal.

Cristopher Granados

We had a great experience. We were shown 3 different types of storage units to accommodate our needs. Customer service was excellent, detailed. Units are spacious and they have great deals. I want to specifically acknowledge Ruth at the Front office, very good customer service. A great and very quick and efficient experience.

Tino Martinez

February 9, 2026

Talk about Bait and Switch! These predatory deceiving shameless thugs went from $89/month to $189/month at the end of my initial contract! I had to deal with a broken gate for about 7 weeks by being forced to enter far away and had to wait a few times for other tenants to move so I could get through the only tunnel to get to our storage. I will definitely be OUT AND NEVER USE THIS COMPANY AGAIN. I tried calling and the representative(Jacob) "helped me" by offering me a $179/month offer. What a joke!