An overlay zone differs from base zoning in that an overlay:
Correct Answer
C) Adds requirements on top of the underlying district's rules
Why this is correct: An overlay zone (e.g., historic, floodplain, airport noise) imposes additional regulations on top of the underlying base zoning (e.g., residential, commercial). A property must comply with both sets of rules. Overlays do not replace base zoning; they supplement it. Why the other choices are wrong: "Replaces the base district's rules entirely for that area" describes a rezoning or a planned unit development, not an overlay. "Applies only to properties owned by public agencies" is incorrect; overlays apply to all properties within their geographic boundary. "Expires automatically after ten years of adoption" is not typical; overlays are usually permanent unless repealed. Exam tip: Overlay = extra layer of rules. Check both base zoning and overlay for HBU analysis.
Why This Is the Correct Answer
Why this is correct: An overlay zone (e.g., historic, floodplain, airport noise) imposes additional regulations on top of the underlying base zoning (e.g., residential, commercial). A property must comply with both sets of rules. Overlays do not replace base zoning; they supplement it. Why the other choices are wrong: "Replaces the base district's rules entirely for that area" describes a rezoning or a planned unit development, not an overlay. "Applies only to properties owned by public agencies" is incorrect; overlays apply to all properties within their geographic boundary. "Expires automatically after ten years of adoption" is not typical; overlays are usually permanent unless repealed. Exam tip: Overlay = extra layer of rules. Check both base zoning and overlay for HBU analysis.
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