The enforcement process is typically initiated in several ways: 1. In response to a complaint by an individual; 2. Observation of a code violation by City staff as they patrol the community and do their jobs; 3. As a consequence of an action (for example, an application for a building permit or a request for a zoning variance).

A complaint about a possible code violation is made by letter, telephone, email, or in person to the appropriate City department. Please be prepared with specific information, such as: the address of the property, detailed description of the situation, and the length of time you have observed the situation. We require that you leave your name and contact number or your complaint will not be assigned to a Code Enforcement Officer. All contact information is strictly confidential.

In many cases, the individual responsible for the code violation is given the opportunity to voluntarily correct the situation and comply with current codes without a penalty. If the correction is not made, then the individual may be subject to fines and other penalties.

In some cases, businesses cannot be operated out of the home. However, there are some business activities which are permitted in residences. Uses such as home offices, professional services, instruction, food preparation, and handicrafts may be allowed if certain criteria are met and a Home Occupation permit is obtained. Commercial auto repair and retail sales from the home are not allowed. -To be permitted, a home occupation must meet the following criteria: -All employees of the business must be residents in the dwelling. -Only 400 square feet of the home, or up to 20% of the living area, whichever is less, may be used for the business. -Clients may only visit the dwelling between the hours of 8am and 6pm, and no more than five client visits per day are allowed. -Parking must be provided for all business vehicles. -Deliveries to the business may only be made by private mail service or the Postal Service. -Outdoor storage of goods, equipment, or material is not allowed. -A valid business tax certificate must also be maintained at all times that the home occupation is conducted. -Vehicles used for the business may not have visible logos. -For information regarding a Home Occupation Permit, please contact the Planning Division at (650) 522-7212. To apply for, or to request an application for a Home Occupation Permit and a business tax certificate, you may contact the Finance Department at City Hall, 330 West 20th Avenue. Their phone number is (650) 522-7100. Search the San Mateo Municipal Code for Section 27.16.040 Home Occupation information at the following link.

See the Planning Departments' fence and hedge regulation overview.

See the Planning Department's sign ordinance overview.