If you had a turnkey apartment building with 5+ units the value is based on the income not comparable sales.

As for paying with certified check, in most counties you only need to pay a deposit; the sheriff should have rules that set the amount of the deposit to be a percentage of the winning bid or a fixed minimum amount, whichever is greater.You determine your maximum bid, and then get checks sufficient to pay that deposit amount based on your maximum bid.

But based on what you posted you would be allowed to do as you wish with the tiny homes and likely add more if they are a success.Regarding the first part of this thread it's worth noting that there is no zoning in the City of Houston.

Based in Katy, TX, I have a mortgage and my DTI ratio is 30%.

I'm assuming this was for a US based caller?

Most lenders would base their numbers off of the initial purchase price until the property has hit a ‘seasoning’ period.

There are high risk markets and properties and low risk properties and markets...and everything in between.When investing it is important for someone to decide what their risk tolerance is, and match that risk tolerance with an investment that matches it.

Rate depends on property type, number of units, LTV, loan amount, FICO, borrower experience, etc....hard to give advice based on the limited info provided. 

There are so many nuances based on each individual's situation.

Older economy hotels tend to trade at a multiple of revenue (say 3X) where midscale + branded assets trade based on cap rate.