Depending on how strict they are, they could make you tear them down or at least bring them up to current code with inspections.You might want to go down to the Building Dept (or call) and ask (without giving an address) what they would recommend.

Also there is strict no refund policy, even from your wallet.

Zip codes which are easy to rent and can get a good cash flow with less crime.

Every structure out West is an accident waiting to happen with the stupid building codes that refuse to allow stick houses to be built.

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?

Other higher fees will cover that “savings” and they’ re title policies exempt a lot of potential liens (code violations, utilities, etc. that are not recorded liens at the time of closing but Do become tour responsibility.

For example, if someone has a low credit score but a great investment deal, I might suggest finding an Individual Private Lender who cares more about the property than the borrower's financial status.)Differences:Hard Money and Private Money Companies: These usually follow strict rules and have more money to lend because they have many investors.Individuals: They might offer more flexible loan terms since they decide the rules themselves.

Also there is strict no refund policy, even from your wallet.

Alternatively, if your goal is strictly to find cashflow from day 1 (especially if you're coming in with a modest downpayment amount), then I would advise to focus in outer areas. 

Create a clear SOWHave a written ContractAsk for proof of Insurance/LicensesAgree on strict timelinesEstablish communication preferencesAdditionally - Create Incentives for meeting timelines.