When is a Knox Box required?
A Knox Box is required for all new construction provided with a fire protection system and on existing construction undergoing substantial renovation that is provided with a fire protection system. The Fire Marshal may also require a Knox Box on existing construction, should it be necessary due to life saving or fire fighting measures or the property presents specific challenges and hazards. The size, type and location of the Knox Box is determined on a case by case basis dependent upon a review of the specific building and/or occupancy.


We have developed a Knox Box document that can assist you in answering some of the most comment questions.

Show All Answers

1. What is a fire inspection?
2. How can I prepare for the inspection?
3. How often will my business or property be inspected?
4. How much will the inspection cost?
5. What if I have a question about the inspection and fire code violations?
6. How long do I have to correct the fire code violations noted on an inspection?
7. Can I schedule a courtesy inspection or fire code consultation?
8. When is a Knox Box required?
9. When do I need a permit?
10. How much does a permit cost?
11. How do I get a permit application?
12. How do I schedule an inspection?
13. When does my fire code permit expire?
14. Why do I need to submit fire protection plans before I can receive inspections from the Building Inspections Department?
15. Where is the McKinney Fire Marshal's Office located?