Some cities require permits and have other restrictions, etc.   

Restrict to secondary family rooms etc.At least you can keep things narrowed down to assure less wear and tear on the whole place.

Heloc's on investment property are actually much more pricier & restrictive than hard money..

. § 227 SEC. 227. [47 U.S.C. 227] RESTRICTIONS ON THE USE OF TELEPHONE EQUIPMENT(A) to make any call (other than a call made for emergency purposes or made with the prior express consent of the called party) using any automatic telephone dialing system or an artificial or prerecorded voice—

Are there restrictions on rentals?

The challenge for present day investors is with elevated mortgage rates and record high housing prices, the carrying costs and incentive to invest now can be restrictive. 

If you own it, maybe you can talk to city/local office to see if you have any right to restrictions for use if others are creating hazards on it.

The intent is torefinance them once I am done with the rehabs and I want to stay clear of theseasoning restrictions often seen on conventional loans.

I looked at the zoning code and there is no restrictions on locks, kitchens, or being related. 

Unless it's a very restrictive area, typically this type of housing is allowed with 30-day minimums.