Commercial real estate contracts for leasing are very complex and often difficult to analyze. Unfortunately, unscrupulous landlords may use this to their advantage, folding in costs that make occupying a space more expensive for tenants. To ensure that you're not being assessed unnecessary charges, keep an eye out for the following hidden costs:

When you sign a lease, your company takes on a contract to pay rent and, potentially, CAM charges. You also agree to pay any number of hidden occupancy costs. If you don't know what they are, you could be in for a large and expensive surprise. Here are some of the hidden costs that are in your lease -- whether or not you know it.

Occupancy cost might seem like a relatively simple metric. If you add up what your company spends on its real estate portfolio, you have your total occupancy cost, right? However, as with any omnibus number, the total tends to hide important details. Digging deeper into your occupancy cost can help you to uncover savings. Here are four ways that you can get started.