By Sean Warnet — USMC veteran & Hawaii GC License CT-37515 · Published February 2026
A building permit protects you. It means a licensed professional pulled the work, an inspector signed off on the structure and safety, and the renovation shows up cleanly when you sell or refinance. On Oʻahu, permits are issued by the City & County of Honolulu's Department of Planning and Permitting (DPP).
What needs a permit
- Removing or altering a wall — especially a load-bearing one — always requires a permit and, for structural changes, an engineer.
- Moving plumbing or adding fixtures — relocating a sink, adding a bathroom, or re-routing a drain line.
- Electrical work — new circuits, a panel upgrade, or significant rewiring.
- Structural additions — expanding a footprint, adding a suite, or changing the roofline.
What usually doesn't
Like-for-like cosmetic work — swapping cabinets in the same layout, replacing a countertop, painting, or new flooring — typically does not require a permit. The line gets crossed the moment you move a wall, a pipe, or a circuit.
Why an unpermitted remodel costs you later
Unpermitted work can stall a home sale, fail a lender's inspection, void insurance claims, and force expensive after-the-fact corrections. As a licensed Hawaii general contractor (CT-37515), we handle DPP permitting as part of your project timeline — it's not an add-on, it's how the job is done right.
