Too few details to answer (Of course this varies county by county, all questions could be answered by reading the (zoning)/building code and/or clarified with a visit to the county planning office).but some clarifications because: lots of things are "tiny homes" but what you describe small houses "on permanent foundations" needs to be clarified , tiny homes could be:-stick built, see below. check your county code/planning dept-stick built cabins/recreational, a specific zoning and potential occupancy/etc restrictions but worth looking into where the zoning allows for it -hud manufactured homes (smaller singlewide perhaps 400sq ft 600sq ft minimum)-non-hud park models (on axles), ansi standards- other "RV's" built on a chassis:  organizations, state agencies, etc - will certify factory built (or sometimes inspected professional built) tiny homes on chassis - to whatever standards ansi, riva, dot/ l&i?

Go ahead and start analyzing deals now for practice. 

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I have allocated $250,000 in savings specifically for investments, aiming for a conservative down payment of 3.5% to 5%, depending on the deal and financing terms.I am planning a visit to Florida in June to scout properties and gain a deeper understanding of Tampa's neighborhoods, including the greater tampa area.

Thank you ahead of time for your help

You don't need to establish business credit ahead of time for the A-paper great commercial mortgages, we do them all the time without any established credit.So you wind up, fast forward a couple years, with a bunch of different LLCs that you share ownership of with different people. 

You could probably find a nice 10 unit apt building in Kalihi or Waianae for cheap but you'll need to hire security.There are whole lot new project anticipating moving into that direction, such as building higher/stronger seawall.Folks that visited regularly notice would notice there would be much more lava big rock stone allocated in front of the beach.

And then 2nd day another person visited for inspection and said they need to remove padding.

Do you think those of us just starting should go ahead and get the permit now or wait until it's updated?

During my ownership, I visited the property in person only 2/3 times over four years.