In order for me to transfer the lease to my name I have to build a 300 sq ft structure on the property so that she is not transferring undeveloped land to me (a policy to make sure people live and build on the land and not just sell after receiving it).

If your managing your own properties that you have a clear ownership interest in .. no licesne requiredif your managing properties for your clients IE collecting rent.. negoatiating leases etc.. then yes you need a brokers license with a PM component.. and you would have to work for a broker for 2 years then sit for your principal broker exam pass that and the property manager component..does not matter resi or commercial.. reason is your handling lots of money for investors and or negotiating contracts state wants those folks to be licensed and accountable. 

I am considering a business idea that includes buying real estate around my area and converting them to rent-able offices and/or data centers for leasing out computing power. 

Leases here are for 1 year so if the tenants stayed on average the full year, you would expect that the worse case would be about four turns per year per 4-plex.

The name on the lease is not the person in the apartment.

The property had been a quadplex for more that 50 years but can be easily transfered to a duplex or I can go through with a special use permit along with being granted a variance for parking because it's on a small corner lot.My question is that the planning department is requesting a lease to be signed by me. 

Spoke with them about rent payment and they said their previous landlord had always accepted rent the 3rd week because they use SS to pay for it although the lease says rent is due the 1st of every month.

Have your finance rent a place and stay with him six nights a week if the terms of his mortgage or rental lease allow it.

In your books, this is also called a Lease Option or Rent To Own solution.

The con is that military personnel can break their lease early if they get orders to move elsewhere.