Vallejo, CA Data Centers & Crypto Mining: Data Center Zoning & Siting (2026)

"Equipment within buildings." Indoor facilities containing primarily communication equipment and storage devices such as computer servers.

"Erect." To build, construct, attach, hang, place, suspend or affix to or upon any surface. Such term shall also include the painting of wall signs.

"Existing building." The continuing but temporary use of an existing, lawfully established building during construction of a new building on the same building site.

"Existing grade." On vacant parcels before any land development activities are undertaken, the elevation of the ground at any point on a lot as shown on the required survey submitted with an application for a building permit or grading permit. Existing grade also may be referred to as natural grade.

"Exotic animal." A rare or unusual animal or pet that is generally considered to be a wild species including, but not limited to, snakes, hedgehogs, tigers, bears, and monkeys.

"Extended care." An establishment providing care on a twenty-four-hour basis for persons requiring regular medical attention, but excluding facilities providing surgical or emergency medical services.

"Family (household)." One or more persons living together as a single household in a dwelling unit with access to and common use of all living and eating areas and facilities for preparation and storage of food.