Renewal process occurs when a client already has a lease, and needs to renew that lease with the server. To ensure that addresses are not left in an assigned state when they are no longer needed, the DHCP server places an administrator-defined time limit, known as a lease duration, on the address assignment.

Maybe not. We moved from an apartment to a townhouse in the same complex and it didn't involve us having to get income verified again. But you should simply ask them what is the procedure and what paper work is involved.

The new ones, so they can verify you have the same cirumstances

It all depends on the management.

Noone can tell you here.

They may or may not ask for new info.

My boyfriend and I are first time renter's to our apartment when we first got the place we had more than enough income to live here. Now our job situations are different and we make less money. We want to renew our lease but move into a different apartment within the same complex. Will we need to show our paycheck stubs again or do they keep the original ones on file?