Can anyone give me ideas on this? I live in a subdivision that frowns on normal storage buildings ?

Building on a concrete slab is the way to go, unfortunately in our locale this will add to our property tax because putting shed on a slab constitues a permanent structure. The workaround is suspending the shed on say brick columns above ground level. This will say that the shed in non-permanent and thus will not increase your property taxes---> Acting on principal alone---> who wishes to raise their property taxes because of a SHED ? It's a SHED!!!

If your HOA prohibits storage buildings, then it would be best to give a copy of their regs to an experienced architect who can work within their restraints. You're not gonna just put up any old prefab structure and just not call it a shed to be able to skirt around their regs. Not uless you want to end up with fines, and liens on your house.