Who decides whether tile work needs a permit
The building authority for your parcel decides permit requirements based on the actual work. Cosmetic tile replacement should not automatically be treated as permit-required or permit-exempt.
A Las Vegas mailing address can correspond to city or unincorporated county jurisdiction. Incorporated municipalities have their own permitting authorities; unincorporated communities do not have independent municipal building departments.
Check local requirements with the parcel’s building authority before work begins. Plumbing, electrical, gas, structural, and permit-related work needs appropriate professional review and any required licensed trades.
Under Nevada residential improvement law, contractors are responsible for necessary permits on covered owner-occupied single-family improvement contracts. The proposal should identify that responsibility before you approve the work.