Marin County Environmental Health Department reviews all plans for compliance with State of California health codes. They are interested in the type of restaurant equipment installed, the categories of food you are handling and standards relating to employee hygiene. The Health Department review will also include a review of the grease collection system. New construction or remodels that cost $100,000 or more require an outside interceptor tank. This device is generally installed outside of the building and existing interior plumbing may need to be reconfigured. This issue should be evaluated prior to signing a lease on a food service establishment.