When you're leasing an office or building for your business, you should think of the first contract provided by the prospective landlord as a rough draft. Unlike residential leases, commercial leases typically involve multiple rounds of negotiation. The first lease agreement will likely be written in the landlord's favor, leaving it up to you to request the modifications to even the score. Following these tips will help to ensure that you win at the negotiation table and walk away with a fair lease.