It requires careful planning and diligent execution.

After that, make a business plan to execute on your goals. 

Building back utilities can increase your income, but it requires careful planning and execution."

So like I am not going to run out and buy a bunch of lots in Lehigh acres or coral gables FLA which is saturated with new builds and un finished new builds were the  FOMO got going big time and builders have failed to execute and left investors high and dry.

We have the full gambit from 1) finding and buying the right property in the right locations to 2) professional execution of the design to 3) discounted property management services.  

Sounds like an easily executable deal from what you've stated but likely need more color to offer path forward, terms, etc.

Otherwise try an executive office service like Regus (local options are cheaper).

Focus most of your energy on the actual house, the spread, the team and the execution.

If you have TIE, time, interest, and energy, self-managing is the way to go.Our clients already have jobs - surgeons, attorneys, executives - that don’t have time nor interest in another job.  

Addendums can be added to a contract (in most cases), which modify the original contract, when legally executed (per the original contact terms).