1Br Appartment purchase built early 1900's - Lead Certification

[Min Vai]

Looking into one property - 1Br/Ba in a decently renting area, but building is built in early 1900's - this is my first deal considering rental property in mind, and haven't dealt with Baltimore City rules/regulations. 

If anybody could share what would be involved in going the right way in obtaining that Lead Certificate so unit's ready-for-rent (will need overall remodeling for sure, but it's not a big unit, good area, decent price) and that I don't encounter some costly issues to deal with post (or even pre) purchase of the unit?

All/any insight is very appreciated and welcomed, thanks in advance! :)