This change improves privacy and minimizes unauthorized access, but it's essential to consider local building codes and regulations, as many jurisdictions require safe egress routes for basement units in case of emergencies.

Don’t skip a professional inspection of the property, as there could be hidden issues such as structural damage or code violations.

It's a very street by street market, so it's tough to put a hard no on any particular neighborhood or zip code. 

Do you increase the rent by strictly calculating the increases in your insurance, taxes and etc ?

Not sure what state you are, but here your lease wouldn't be "void"  Anything that conflicts with the code would be (landlord-tenant code supersedes leases in DE anyway)I would just say you had them sign an older version of your lease in error and need them on the current one.

Anyone know some property mangers in Coloma Michigan zip code 49038?

Find a drafter that's familiar with construction and codes.

Tenant in San Francisco discovered the in-law unit had fire code violations so sued landlord for $2 million.

Send notice to the tenant about their actions including civil code references to the broken laws and that she must immediately change and comply or you will begin the eviction process. 

A prospective tenant may schedule a showing time through our system after being verified.Our system will automatically send a lockbox code to that prospective tenant that's only valid for the scheduled showing time they signed up for and will change after that scheduled period ends.