Under California Coastal Commission exemptions, which condition must be met for a single-family residence to be exempt?

For a single-family residence to qualify for an exemption under California Coastal Commission regulations, it must be legally established and comply with local zoning ordinances. This criterion is essential because it ensures that the residence conforms to existing land use regulations, which is a fundamental requirement for any property development in California's coastal zone.

Legal establishment means that the residence has the necessary permits and approvals and is recognized by local authorities as a valid use of the land. Compliance with zoning ordinances ensures that the construction adheres to local planning guidelines, which may include restrictions on the type of structures allowed, their height, density, and their environmental impacts. This alignment with local planning objectives is crucial in maintaining the integrity of coastal resources.

The other options refer to circumstances that do not provide grounds for an exemption. For example, being in a geologic hazard area or having specific public access considerations are factors that may pose challenges rather than meet exemption requirements. Additionally, reliance on resource usage like water is often evaluated differently and may compete against other sustainability goals rather than serve as an exemption condition.