Most folks are charging 10% of the rental rate for monthly PM fees. 1 months rent for a leasing fee and couple hundred for a lease renewal.

If you decide not to renew their lease or increase their rent they need a 60 day notice, and you have to notify S8 as well.Outside of those 2 exceptions your tenant should follow the lease like everyone else.

Renewal has been a nightmare. 

Get a little bit less in rent for the 1st tenant but always willing to do either a 6 or 18 month lease to swing renewal time back to the summer.

Use surveys to gather feedback on their experience.When tenants feel valued and respected, they’re more likely to take care of the property and renew their leases, saving owners time and money.Fairness with VendorsVendors play a crucial role in maintaining properties, and treating them fairly ensures they remain reliable partners.

In each case there is a fee for the first year (something like $20K and $5K, respectively), and then the renewal fee for subsequent years is much lower. 

Of course the risks are there that the owner will not renew the lease and start doing it themselves if you are successful.

Common fees will include a set-up fee, a leasing fee for each turnover or a lease renewal fee, marking up maintenance, retaining late fees, and more.

Once renewal period comes up (if they've been paying on time and causing no trouble) you can decide if you want to keep them or move on. 

I had a tenant that wanted to renew a lease, but only for 6 months - which would have left us in the middle of January (in Michigan :) Apparently they may inherit a somewhat run down house, and wanted to keep their options open.