Negotiating a lease with a landlord is not all that different than negotiating the purchase of a car. The important thing is to know what you want going into the deal and to remember the rule that everything is negotiable.
Indeed, if you are at the stage where you are negotiating over lease terms, then you have become a valuable commodity to the landlord. Finding qualified businesses that are willing and able to take on a commercial lease payment is not so simple. Accordingly, you may be in the power position when negotiating a lease and can ask the landlord for concessions and changes to the lease, as necessary.
You do so by doing your homework first. Find out how much similar spaces are renting for. Is the vacancy rate high or low in this area? (If it's high, you can negotiate a great deal because the landlord needs you.) If the space is vacant, find out how long it has been vacant (the longer the better for you). The more you know, the better equipped you will be to negotiate a good deal.
Once you are presented with the lease, read it carefully, and then give it to your lawyer for review. If you find some part of the lease that you or your lawyers don't like, negotiate that point. Remember that the lease was drawn up by your potential landlord's lawyer and will certainly favor your landlord. Remember too that although you might be presented with a pre–printed lease, and that it may seem difficult to change, it is nothing more than a contract, and the essence of contract law is that both sides must agree to all conditions. That, in fact, is why a contract is also called an agreement. If you don't like something, it can be changed.
The important things to understand and agree to are: