acquiring floor plans / getting proposed floor plans made?

[Seth Alexanderowicz]

hey everyone I have a question about acquiring floor plans for a house and summiting them to the town. I found a house with a really  nice in-law apartment built on and originally thought was to turn to multifamily. called the town said it would be possible. he also said something about a dwelling unit that is a way quicker process to pursue. as long as I meet the standards like parking egress etc.  i just really need to figure out now is how to get floor plans ? can I make them? and say if I do got to add or knock down a wall how would I get proposed floor plans  from a contractor? can I make them? please and thanks in advance!