Roofer came back out and looked it over, sealed them with some type of clear water sealant, and said the flashing and everything looked good -- but they continue to leak and the leaks are getting worse with each storm.Question: how do I find the right person to replace these skylights?

Pay close attention to items that will make your project difficult, waterways, water courses, ditches, canals etc these are either easy obstacles or deal killers.4.

Roofer came back out and looked it over, sealed them with some type of clear water sealant, and said the flashing and everything looked good -- but they continue to leak and the leaks are getting worse with each storm.Question: how do I find the right person to replace these skylights?

Not an exhaustive list:- how are you providing water?

How old and in what condition are the big-ticket features (roof, windows, doors, flooring, furnace, water heater, etc.)? 

It needed a TON of work when I bought it and the basement had mold and water in it.

The house has serous basement level water damage which is the major part of the rehab and the master bedroom was framed but not finished.

The inspection came back with some dry rot issues along with water intrusion effecting the siding and may need a full residing / recladding of the building. 

Ask the neighbors if they take on water.

Here are a few other considerations:- Water/Sewer, Landscaping- Annual rental permit/inspection fees - check with your local government. - Are all utilities split for each apartment?