We use 600 as our target credit score and that eliminates most prospects.

I have found that the short term rental permit from the City of Sacramento runs nearly $3,500 per unit, and takes several months to be heard at a public hearing for approval, with the risk of rejection.

I have a house that a prospective buyer wants me to  Owner Finance the sale.

We would like to update the electric panel (last completed in the 80's) however the contractor informed me that new rules stipulate new permits must include a hardwired connection to a Fire System.Is this true???

Check to see If there are any specific street design requirements, DOT requirements, permits or traffic studies, DWQ, Army Corp or any other environmental requirements or permits. 

As a PM I've had prospective owners quiz us on our knowledge and I always love it. 

It highly depends on what was done without permits.

As a side note, use the rent differential as a lesson that sellers are always honest and verify the rent that is being paid via seller rental acct bank statements or talk to the tenant (if permitted).

So, that's materials, project management cost, caring cost, permits, taxes, insurance, architecture, utility hookups, inspections, delays etc.

@Kyle W. sounds like a very interesting prospect.