Quick Answer
Zoning restrictions for off-grid housing often limit the size of solar arrays, restrict the use of rainwater harvesting systems, and set minimum lot sizes to ensure adequate space for septic systems and other infrastructure.
Off-Grid System Size Restrictions
Zoning restrictions typically dictate the maximum size of solar arrays, which can range from 1 kilowatt to 10 kilowatts, depending on the location and the amount of power needed. For example, in California, some jurisdictions have a maximum solar array size of 5 kilowatts per residential property. Homeowners may also need to consider setbacks from property lines and neighboring homes when determining the optimal size and placement of their solar array.
Rainwater Harvesting and Water Storage
Zoning regulations may restrict the use of rainwater harvesting systems, including the size of tanks and cisterns, to ensure safe and adequate water storage. For example, the International Association of Plumbing and Mechanical Officials recommends a minimum tank size of 1,000 gallons for rainwater harvesting systems. Homeowners may need to obtain a permit from their local water district or health department to install a rainwater harvesting system.
Minimum Lot Sizes and Septic Systems
Zoning regulations often require a minimum lot size to ensure adequate space for septic systems and other infrastructure. For example, in some areas, a minimum lot size of 1 acre may be required for homes with septic systems. Homeowners may need to obtain a permit from their local health department to install a septic system, and may need to conduct soil tests to determine the suitability of the site for a septic system.
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