Guide · Permits · Updated July 2026
Do You Need a Permit? A South Bay Homeowner's Guide
What needs one, what usually doesn't, and why the answer matters more than most people think.
The one-sentence rule
If the project touches structure, plumbing, electrical, gas, or the building's footprint, assume it needs a permit. If it only touches surfaces, it usually doesn't. Everything below is detail on that sentence.
Projects that need a permit
- Additions and ADUs. Always. Foundations, framing, and new living space are the definition of permitted work.
- Removing or moving walls. Even non-bearing walls typically require permits, and bearing walls add engineering.
- Kitchen and bath remodels. When plumbing or electrical moves or gets replaced, which is most real remodels, yes.
- Electrical panel upgrades, rewiring, new circuits. Yes, and this is one you genuinely want inspected.
- Water heaters, furnaces, and AC changeouts. Yes, even like-for-like swaps in most cities.
- Re-roofing. Yes in nearly every South Bay city.
- Garage conversions. Yes. Converting parking to living space is a change of use, and doing it unpermitted is the classic mistake that surfaces at sale time.
Projects that usually don't
- Interior and exterior paint
- Flooring replacement
- Cabinet swaps in the same layout with no plumbing or electrical changes
- Countertop replacement
- Small repairs like patching drywall or replacing a faucet in place
Cities differ on the edges, especially for fences, decks, and window replacements, so when a project sits in the gray zone, a five-minute call to the city or to us settles it. Guessing is the expensive option.
What unpermitted work actually costs you
The permit fee is never the real money. Unpermitted work costs you later, in four ways: buyers and their inspectors discount or walk from houses with unpermitted additions, insurers can deny claims tied to unpermitted systems, cities can require unpermitted work to be opened up or removed, and refinancing appraisals get complicated when the county's records disagree with reality. A permit is cheap insurance on the biggest asset you own.
Who issues permits, city by city
Every South Bay city runs its own building department, and one neighborhood surprises everyone: Harbor City is part of the City of Los Angeles, so its permits go through LADBS. Here's where each area's projects get reviewed, with our local page for each:
- Torrance: City of Torrance Community Development
- Redondo Beach: City of Redondo Beach Community Development
- Manhattan Beach: City of Manhattan Beach Community Development
- Hermosa Beach: City of Hermosa Beach Community Development
- El Segundo: City of El Segundo Planning & Building
- Palos Verdes: each Peninsula city runs its own review, with design boards in the mix
- Carson: City of Carson Community Development
- Gardena: City of Gardena Community Development
- Lomita: City of Lomita Community & Economic Development
- Lawndale: City of Lawndale Community Development
- Hawthorne: City of Hawthorne Planning & Building
- Harbor City: City of Los Angeles, through LADBS
The good news: you never have to touch any of this
When a licensed general contractor runs your project, permits are part of the job. We prepare the drawings, submit them, answer plan-check corrections, and schedule every inspection. Homeowners who work with us generally never stand at a permit counter, and that is exactly how it should be.
Have a project in the gray zone?
Tell us what you're planning and we'll tell you what it needs, permits included.
Get a Free Estimate
Planning something specific? See our guides to ADUs, or jump straight to kitchen & bath remodeling and home additions.