Developing Property in Melrose, MA

[Gail C.]

So happy to have discovered the Bigger Pockets site!  I'm just starting my journey to develop a .40 acre (17,000 sq. ft.) piece of property in Melrose MA.   In speaking to a potential GCyesterday,  I realized that I need some guidance.  What are the questions I should be asking?  Is there a customary salary range for their services in this area of MA? Do they also receive a percentage of the back end profits ?  

Your thoughts and suggestions would be greatly appreciated!