More than just storage units, towns like Salem, Windham, Londonderry, Derry, Raymond, Epping, are building like crazy. Shit is stupid expensive everywhere and people (like me) moved or are moving to NH from MA, NY, NJ, RI, CT, because NH is awesome, has no state income tax, sales tax, etc. I sold my house in MA, bought a new house in NH, but needed a storage unit because my old house closed three weeks before my new house was ready to move in. Lots of people have transitioned to working remote, so cities are emptying out combined with people selling expensive large homes and downsizing to smaller houses and condos. Bottom line, with a massive influx of people coming to NH from other states, more storage places is a no brainer.