You can use a  hypothetical  purchase price and loan amount for the pre approval process  as this will get revised to the actual figures once you have located a  proeprty and have an offer accepted

Bottom line - All hype, bs, misinterpretation, opinion bias, etc aside, sellers willing “owner finance” the sale of their property for one reason - and one reason only: They PERCEIVE that they are getting a higher price for their property by owner financing than by a cash (cash to them) sale.The “perceive” part is why buyers can sometimes structure terms ridiculously one sided in their favor - because some sellers are so focused on PRICE they become oblivious to anything else.It’s why I and numerous others have been able to structure 20 year owner financing loans at ZERO interest; why sellers have accepted “substitution of collateral” that gave them a lien on recreational land I had rather than their own income producing property; why sellers accept second position liens and allow buyers to obtain new first mortgages ahead of theirs (subordination), and why sellers always accept mortgages without my personal guarantee.I myself sell properties and provide owner financing to obtain a higher price.

It sounds like I should wait until mid to late next year at least to accept any offers.

That is acceptable by our fire dept in Denver that inspects it once a year. 

Beyond removing the developable parcel from existing loan expect whomever finances the construction to want zoning, building permitting and utility connection approvals before the loan is originated (some will accept just zoning).

I have recently noticed a few articles posted on mainstream sites such as marketwatch about back door Roth IRA.

After giving notice to vacate or filing an eviction suit, Landlord may still accept rent or other sums due; the fling or acceptance doesn’t waive or diminish our right of eviction or any other contractual or statutory right.

Investor Beware....Once you jump through all the hoops and prove your salary and net worth, make sure the credit of the borrowers are within your acceptable credit range.

Reserve requirements vary greatly from lender to lender but you have to acceptable reserves of some sort as well.Lastly, keep in mind, many lenders will not consider managing properties where you are not on title as experience. 

I found an inspector to do a walk thru before my offer was accepted.