I want to know do I need to pull a permit to have my roof covered with tar flashings, and also do I need to pull a permit to have drop ceiling tiles installed
In Baltimore, most probably you'll need a permit for everything!
Here is the Dept. of Housing and Development website where you can take a look.
You don't need a permit to replace an existing roof (Source Baltimore Code) or add drop ceiling tiles.
Thanks for the help much appreciated