I'd say there isn't a hard rule on lease renewals - some PM's don't charge, some charge a flat rate, and some even on a % of monthly rent basis based on the renewal documents / resources involved.

Utilized BKCO Title & Escrow work at a flat fee of $800 and provide exceptional service.

The building is a 2 flat and the current tenants are myself and my brother.

2 Flat Zoned RT-4 Chicago IL 

MAKE SURE to draw up some kind of operating agreement that includes exit strategy.honestly if you can refi without him just get hard money loan and skip him altogether.

There are two flights of stairs inside, all floors are relatively flat, will be exposed to a lot of direct sun in areas.

They are installing trusses, no more flat roof!

There are still some attorneys that basically charge a flat fee which is nice. 

I'd appreciate recommendations for a flat fee attorney.

Confirm with the town.I'm guessing you can cash flow $200-250/month altogether.