What does the term Substantial Improvement mean in Zoning?

When the cost of improvement to a building (or the cost to repair a building to the pre-damaged condition) is greater than or equal to 50% of the value of the building the work is considered a substantial improvement. Property owners with buildings in the Flood Hazard Overlay, which comprises the Floodplain and Floodway, need to be aware of this FEMA regulation.

FEMA - Answers to Questions About Substantially Improved or Substantially Damaged Buildings

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1. When do I need a Zoning permit to do work?
2. How do I apply for a Zoning permit?
3. After applying how long does it take to have a Zoning permit issued?
4. I need a plat or survey of my property. Where can I find one?
5. I would like temporary power to a site, how do I apply for it?
6. Where can my RV/camper be stored on my own property?
7. Where can I live in my RV/camper in the County?
8. When is a sign permit required? What signs are exempt and what are prohibited?
9. Where can I operate a food truck in Botetourt County?
10. I have received a Zoning Courtesy Notice or Notice of Violation. What do I do next?
11. What animals are allowed and what are prohibited from residential Zoning use districts?
12. Where can I find the Zoning ordinance about wind energy systems?
13. What does the term Substantial Improvement mean in Zoning?