That speaks really well for how well executed the project was.

If Tenants are entitled to 60 day notice, follow the lease and give proper notice.

Most of these small houses in the area are less than 900 square feet and don't have a proper laundry room.

The one that was extremely low was where the contractor left all kinds of debris in the yard and the property manager did not have the house properly cleaned before the appraiser got there.

Proper identification of tenants is also needed if you want any chance of having local code enforcement write tickets against the tenant and not the owner.Any Legal Action Documents: you’ll definitely want to know if the current landlord is evicting or suing the current tenant(s).

Thank you Hi Andrew,Something like this where you utilize contractors to do the work might be close to a decent overview, sans info about running it as a business.https://www.amazon.com/Complete-Guide-Contracting-Step-Step/dp/1440346011Business Decision:Parcel A can hold 157 SFH's max with proper road layout and city approvals of that amount for water, sewer and electric.Buyers clamoring for lower density at a better builder profit than higher density, so 100 sfh makes more money on Parcel A this year.Builder believes sustainable will bring higher profit on Parcel A than lower density (typical for the area) SFH's at that price point. 

Understand as well, that if his friend is in the business, it’s very difficult for him to make an owner occupied, consumer purpose loan without proper licensing, an NMLS registration, compliance to TILA and RESPA, and on and on.

I’m looking at a duplex that was illegally converted (proper permits weren’t pulled/zoning is still single family residential).

There are firms that can act as an Intermediary (middle man) to assist two parties (the principals) to achieve certain tax objectives that can't be achieved in a transaction directly executed between the two principals. 

Take ownership of your mistake and learn to do the proper due diligence recommended above😊