Installing a new sign for your business in Los Angeles requires a sign permit from the Los Angeles Department of Building and Safety (LADBS). The permit process can feel overwhelming if you have never been through it, but understanding what is required — and what common mistakes to avoid — can save you weeks of delays and hundreds of dollars in corrections. This guide covers everything you need to know.
Do You Need a Sign Permit?
In the City of Los Angeles, a sign permit is required for virtually all exterior commercial signs, including:
- Channel letter signs (front lit, back lit, reverse)
- Monument signs and pylon signs
- Cabinet (box) signs, including face replacements
- Projecting signs and blade signs
- Awning signs and canopy signs
- Digital signs and electronic message centers
- Pole signs (new and refaced)
- Wall-mounted signs exceeding certain size thresholds
There are limited exceptions. Non-illuminated signs under 20 square feet on a single-tenant building may be exempt in some zones, and temporary banner permits have a separate, simplified process. However, the safe assumption is that any permanent commercial sign in LA requires a permit.
Operating a sign without a permit is a code violation that can result in fines, removal orders, and problems when you sell the business or renew your lease. It is always better to permit your sign properly from the start.
The LADBS Sign Permit Process: Step by Step
Here is what the permit process looks like from start to finish in the City of Los Angeles:
Step 1: Site Survey and Documentation
Before anything is submitted to the city, your sign company should conduct a thorough site survey. This includes measuring the building facade, documenting existing signage, photographing the property from multiple angles, and noting the zoning designation. The zoning is critical because it determines the sign regulations that apply to your property.
Step 2: Design and Engineering Plans
LADBS requires detailed construction drawings that show the sign's dimensions, materials, illumination type, electrical specifications, mounting method, and location on the building. For most commercial signs, the city also requires structural engineering plans prepared and stamped by a California-licensed Professional Engineer (PE).
The engineering plans must demonstrate that the sign structure and its attachment to the building can withstand wind loads, seismic forces, and dead weight loads as specified in the California Building Code. This is not optional — submitting without engineering plans will result in an automatic rejection.
Step 3: Landlord Authorization
If you are a tenant, LADBS requires written authorization from the property owner (or authorized representative) granting permission to install the sign. This is typically provided on the owner's letterhead and must include the property address, the owner's signature, and a statement authorizing the sign installation.
Step 4: Permit Application Submittal
The complete application package is submitted to LADBS. This includes:
- Completed LADBS permit application form
- Sign construction drawings (2 sets minimum)
- Structural engineering plans (stamped by a CA PE)
- Property owner authorization letter
- Plot plan showing the sign location on the property
- Photos of the existing building and any existing signs
- Contractor's license information (C-45 for electrical signs)
- Workers' compensation certificate
Step 5: Plan Check Review
Once submitted, the application enters LADBS plan check review. A plan checker reviews the submittal against the Los Angeles Municipal Code (LAMC) sign regulations, including Chapter 1 (building code), Article 4.4 (sign regulations), and the specific sign district or zoning requirements for your property.
Plan check typically takes 2 to 4 weeks for a standard sign application. During busy periods or for complex projects, it can take longer. Expedited plan check is available for an additional fee.
Step 6: Plan Check Corrections
It is common for LADBS to issue plan check corrections — requests for additional information, clarification, or changes to the design. Common correction items include:
- Sign area exceeds the maximum allowed for the zone or building frontage
- Sign height exceeds the maximum allowed
- Missing structural engineering calculations
- Inadequate electrical information
- Landlord authorization missing or incomplete
- Sign type not permitted in the specific zone
Each correction requires a written response and revised drawings. A good sign company anticipates these issues and addresses them in the initial submittal to minimize back-and-forth.
Step 7: Permit Issuance
Once the plan checker approves the application, the permit is issued. You (or your sign company) pick up the approved plans and the permit card. The permit card must be posted on-site during installation.
Step 8: Installation
With the permit in hand, your sign company fabricates and installs the sign according to the approved plans. Any deviation from the approved design requires a plan revision, which means going back through plan check. This is why it is important to finalize the design before submitting for permit.
Step 9: Final Inspection
After the sign is installed, you call LADBS to schedule a final inspection. An inspector visits the site to verify that the sign was installed according to the approved plans, that the electrical connections are safe and code-compliant, and that the sign structure is secure. Once the inspector signs off, the permit is finalized.
How Much Do Sign Permits Cost in Los Angeles?
Sign permit costs in LA include several components:
- LADBS plan check fee: Based on the valuation of the sign work, typically $300 to $800 for a standard channel letter set
- Building permit fee: Also based on valuation, typically $200 to $500
- Electrical permit fee: Required for illuminated signs, typically $75 to $200
- Systems development surcharge: A flat fee added by the city, typically $50 to $100
- Structural engineering: Not a city fee, but required for the application. Typically $300 to $800 depending on complexity
Total permit costs for a standard commercial sign in Los Angeles typically range from $500 to $2,000, depending on the sign's size, type, and complexity. Larger or more complex projects (monument signs, pylon signs, digital displays) can cost more.
How Long Does the Permit Process Take?
Realistic timelines for the City of Los Angeles:
- Standard plan check: 2 to 4 weeks
- Plan check corrections (if any): 1 to 3 additional weeks per round
- Expedited plan check: 5 to 10 business days (additional fee)
- Total typical timeline: 4 to 8 weeks from submittal to permit issuance
The biggest variable is corrections. A clean, complete submittal with thorough engineering and accurate zoning compliance can get through plan check in 2 to 3 weeks with no corrections. A poorly prepared application can bounce back and forth for months.
City-Specific Requirements
If your business is outside the City of Los Angeles, the permit process may be different. Each city in LA County, Orange County, and Riverside County has its own sign ordinance, permitting department, and fee schedule. Here are some notes on cities we work in frequently:
- Gardena: Relatively straightforward process. The city's planning department reviews sign applications for zoning compliance, then building permits are issued through LA County.
- Torrance: Has its own community development department. Sign permits require a site plan, elevation drawings, and color photos. The city is particular about sign illumination in residential-adjacent zones.
- Long Beach: Operates its own building department (not LA County). Sign permits follow a similar process to LADBS but with different forms and fee schedules. The city has specific sign districts downtown with enhanced design requirements.
- Carson: Uses LA County building department for plan check. Planning approval is required first, which can add 1 to 2 weeks to the process.
- Anaheim (Orange County): Has a robust sign ordinance with specific requirements for the Anaheim Resort District (near Disneyland). Sign permits require planning department review in addition to building permits.
- Riverside: Uses its own building and planning department. The city has become stricter on sign regulations in recent years, particularly regarding illumination levels and sign area.
Common Reasons Sign Permits Get Rejected
Based on our 20+ years of experience filing sign permits across Southern California, here are the most common reasons applications get rejected or delayed:
- Exceeding maximum sign area: Every zone has a maximum total sign area based on building frontage. If your proposed sign plus existing signs exceed this limit, the permit will be denied until you reduce the sign size or remove existing signage.
- Wrong sign type for the zone: Some zones prohibit certain sign types. For example, pole signs are restricted in many residential-adjacent commercial zones, and animated or flashing signs are banned in most areas.
- Missing engineering: Submitting without structural engineering plans is the fastest way to get rejected. The city will not review the application until engineering is provided.
- Landlord authorization issues: If the authorization letter is missing, unsigned, or from someone who is not authorized to grant permission, the application will be held until proper authorization is provided.
- Height violations: Signs that project above the roofline or exceed the maximum height for the zone will be rejected.
- Incomplete electrical information: For illuminated signs, the plans must include electrical specifications, wire sizing, transformer or power supply details, and the location of the disconnect switch.
How Genius Signs Handles Permits for You
At Genius Signs, we handle the entire sign permit process as part of our full-service approach. Here is what that means for you as a client:
- We conduct the site survey and zoning research at no additional charge
- Our design team creates permit-ready construction drawings
- We coordinate with our structural engineer for stamped engineering plans
- We prepare and submit the complete application package to the city
- We respond to plan check corrections and manage all communication with the building department
- We pick up the approved permit and schedule the final inspection after installation
Our in-house permit specialist has filed hundreds of sign permits across Los Angeles, Orange County, and Riverside. We know the codes, the plan checkers, and the common issues in every city we serve. This experience means fewer corrections, faster approvals, and less hassle for you.
Tips for a Smooth Permit Process
- Start early: Factor in 4 to 8 weeks for the permit process when planning your sign timeline. If you are opening a new location, start the sign process as early as possible.
- Know your zoning: Before finalizing your sign design, confirm the zoning regulations for your property. This prevents costly redesigns after submittal.
- Get landlord authorization early: If you are a tenant, get the landlord's written authorization as soon as you commit to a sign project. Chasing signatures is one of the most common causes of delay.
- Work with a licensed contractor: In California, electrical sign installation requires a C-45 license. Using an unlicensed contractor can result in permit denial, fines, and liability issues.
- Do not install before the permit is approved: Installing a sign without a permit is a code violation. The city can require you to remove the sign at your expense and may impose fines.
Ready to Get Started?
If you need a sign for your business in Los Angeles, Orange County, or Riverside County, Genius Signs handles everything — design, engineering, permits, fabrication, and installation. We are a C-45 licensed electrical sign contractor with over 20 years of experience and a 10,000 sq ft fabrication facility in Gardena.
Request a free quote or call us at (323) 830-6789. We will assess your property, explain the permit requirements for your specific location, and give you an honest timeline and price.