Do You Need a Permit for Bathroom Ventilation Fan Replacement? in Polen
Sometimes. A simple like-for-like swap of a bathroom exhaust fan on an existing circuit is typically exempt from permits. However, installing a fan where none existed, running new ductwork to the exterior, upsizing the electrical circuit, or cutting a new roof or soffit penetration usually triggers an electrical or building permit and inspection.
Do you need a permit?
Rarely required
- Permitting authority
- Starostwo Powiatowe (Wydział Architektury i Budownictwa)
- Typical fee
- PLN 0–200
What triggers a permit
- Installing a bathroom fan where none previously existed (new electrical circuit required)
- Running new ductwork through walls, attic, or roof to vent outside
- Upgrading the electrical circuit to a higher amperage or adding a dedicated breaker
- Cutting a new penetration through the roof, soffit, or exterior wall
- Adding humidity-sensing controls or integrated heater units that modify wiring
Country-specific detail
In Poland, replacing a wentylator łazienkowy (bathroom fan) with an equivalent unit on the existing instalacja elektryczna is considered bieżąca konserwacja (routine maintenance) and does not require a zgłoszenie or pozwolenie na budowę. However, if the work involves modifying the kanał wentylacyjny (ventilation duct) in a budynek wielorodzinny (multi-family building) — where the duct is part of the shared wentylacja grawitacyjna (gravity ventilation) system — prior approval from the wspólnota mieszkaniowa (homeowners' association) and potentially a zgłoszenie to the Starostwo are required. New electrical circuits must be installed by a qualified elektryk with uprawnienia SEP and documented in the protokół pomiarowy.