You mean like "Self Storage"?
Sorry. Do not want.
If I don't personally have the space for it today, I don't need it ... This goes for every company I've ever worked for or consulted for, too.
Paying someone else to store your shit is ... well, not to put to fine a point in it, paying someone else to store shit.
Me, I compost it. Breaking it down to basics saves time & trouble over the long haul ... and usually returns useful results.