I would also argue that a violent felony conviction is a greater threat than someone dealing marijuana or drunk driving.Here's another issue: most Landlords will set a policy of "No felonies within seven years".

I am considering renting to a marijuana company in MA and was wondering what you guys are seeing for typical rents?

Tenant acknowledges the premises are designated as smoke-free and agrees not to smoke and will not allow any of their family or guests to smoke on the premises, either inside the unit or outside on adjoining grounds.Tenant agrees to abide by this no-smoking policy.This includes smoking tobacco, marijuana, any other substance and/or vaping chemicals.

There could be something peculiar about your contract that makes it non-assignable (in short, check with an attorney to be certain) but, in general, UNLESS STATED OTHERWISE WITHIN THE CONTRACT, all buy-sell real estate agreements are personal property and inherently assignable. 

I have a medical marijuana card so I was denied from most jobs which I understand since its still fairly new to the State.

I don't really care if tenants vape or smoke marijuana (since they are unlikely to smoke enough to ruin my paint).

I would make sure you get a propr mgmt certification to make sure you know EVERYTHING about service dogs, marijuana laws, eviction info, how to handle all tenant issues, like them vacating before their lease is over, tenants not paying rent or causing a neighborhood nuisance, etc. 

But that is a peculiarity of the business that I am. 

I would also remind everyone that marijuana possession and consumption is still a federal offense so Landlords are well within their rights to ban it from their property.

Are you up to date on fair housing, pets, service animals, marijuana laws, etc.