Are there self-storage companies in Puerto Rico?
In the 50 states of the US, there are self-storage companies. U-Haul has some and there are others, with or without associated Truck Rental. Essentially you rent a space to store personal effects, furniture, etc., from about 4 x 4 feet up to the size of a garage, and have access during working hours, rarely 24-7. I believe there are few if any in South America, my present location. But what about Puerto Rico?
Yes there are self storage facilities. Check out these links below.
http://www.insideselfstorage.com/articles/641feat3.html
http://www.superpagespr.com/busquedaweb?dir=RANK&newSearch=true&sid=6AFA4F144ED80C445B8FCB5938EAF949&iqk0=self+storage
Cheapest way to move from St. Louis, MO to Palm Harbor, FL aprox 1000 miles.?

Yes , there are many.
References :
Yes there are self storage facilities. Check out these links below.
http://www.superpagespr.com/busquedaweb?dir=RANK&newSearch=true&sid=6AFA4F144ED80C445B8FCB5938EAF949&iqk0=self+storage
References :
Yes, there are a few companies. One is named MiniAlmacenes and have several warehouses all over PR.
Check: http://www.acemudanzas.com/
References :
They are:
AAA Mini-Almacenes Publicos-1-787-724-2350 in Santurce in Guaynabo 1-787-708-8778
Mini Warehouse Storage from $9.99 starting price 1-787-750-5744 in Carolina
in Bayamon area1-787-474-2884 and Caguas area 1-787-449-9815
Caribbean Self Storage1-787-776-2222 in Carolina
Ace Mini Almacenes -private storage 1-787-645-1837 Metro and all island
Advantage Self Storage1-787-781-3503
Caparra Self Storage1-787-781-6941
Premier Self Storage 1-787-798-6818 or 798-8739in Bayamon
Secuirty Storage in Caguas 1-787-790-4030
Self Storage 4-U1-787-287-9293 in Guaynabo
The first one is for commercial and the rest is for personal storage and usage.
Hope this helped you out
References :
live here