I didn't formally ask the city about permits and such for my POD, but I did quietly ask around about similar structures but didn't get any really solid guidance. It's not attached to anything, is not visible from the street and only from one neighbour. There's also no HOA.
I built my POD on an elevated 8' octagonal wooden deck but the only permanent part is the pier (which doesn't touch or support the POD). I power the POD with an extension cord (heavy gauge on a 20amp GFCI protected circuit) to further the "non permanent" status ... it is however left plugged in all the time. The internal electrical is all done from multiple 6 outlet power bars (again more of the non permanent aspect) connected to a single PVC box with 4 NEMA outlets (where the extension cord terminates).
So basically it's a storage shed on a wooden platform with temporary power. It's bullet proof, safe and effective (and probably my best astronomy oriented purchase), and if push came to shove I'd enjoy formally arguing it's non permanent status with any city ordinance folks.
Edited by mclewis1, 01 February 2021 - 06:13 PM.