Contractors who are registered with Central San and are active within our system are displayed on our Current Contractor List. This list was created for the convenience of Central San residents. This list is not an endorsement of any contractor.  After registering with Central San, any contractor who possesses the required license as stated by District Code §5.12.030, may apply for and pull a permit. The license type a contractor possesses dictates the sewer work they will be allowed to perform. Contractors with 5 years or more of inactivity are considered inactive and will be required to re-register with Central San.