While this is municipality dependent, if the contractor is not licensed you likely cannot obtain the necessary permits and approvals.

Health and safety inspections don't seem to care much about zoning or permitting issues.

Just make sure the town is ok with the land being zoned for multi-units, and look into construction costs, financing options, and permits ahead of time.

Insurance and LicensesThe Subcontractor agrees to maintain:General liability insurance of at least $[Insert Amount].Worker’s compensation insurance (if applicable).All necessary licenses and permits required by law.6.

Green card/Student/etc etc permits/visa. 

Hi @Carlos Rodrigues,Realistically, it's unlikely that sellers will get permits while in escrow.

Expensive markets are often desirable because many people want to live there, driving up demand and prices.Reno, NV, for instance, is a market that benefits from diversified employment sectors, including tech manufacturing, hospitality, and recreation.

It is near Woodland Park which is having problems with allowing new permits. 

Duplex have different zoning that may permit additional units.

Duplex have different zoning that may permit additional units.