Also understand that having a license means you may actually have to buy a property at a price higher than if you were unlicensed. 

Do the project management for her and she can then pay you out of her proceeds when she sells the house afterwards.Note:  Make sure you are not acting as an unlicensed General Contractor if you manage this.  

if you went through 5 contractors, then you either did one of two things, used unlicensed subs(if someone wants to be paid hourly, they aren't licensed) or went as cheap as you could, instead of finding a quality MHIC licensed contractor. 

But, in Maryland, if you were to get caught, the unlicensed guys who were doing the work with/for you could get heavily fined.

It's also legal to have an unlicensed person who works for you to manage YOUR property.

My unlicensed secretary was more knowledgeable then they were with their 24 years of experience each.

An unlicensed contractor cannot charge more than $500.

One unlicensed private lender I know puts $ signs on his name tag ... thus not advertising but letting people know. 

I don't know how much it would cost more for duck work, but I am sure you can find someone who is willing to do it cheap for extra money.Your worried about properly installed electric heaters but proceed to recommend finding an uninsured unlicensed cheap hack to install an unpermitted furnace.

Now, when the property manager is hounding a tenant for late rent - is he/she operating as a property manager (not according to the lease, the judge might say), or an unlicensed/unauthorized/unregulated collection agency?