Los Angeles sizes your legal wall sign by a formula tied to your street and building frontage — and caps the combined area of all your signs separately. Go over and a sign violation is a misdemeanor. Enter your frontage and get a clear read before you build.
This checks on-premise wall signs in LA commercial/manufacturing zones. Off-site signs, billboards, and supergraphics are not covered. Digital/LED displays need separate review.
Lot width along the street.
Width of the building wall facing the street.
How LA sizes your sign
Unlike many cities, Los Angeles doesn't give each zoning district its own sign table. Instead, LAMC §14.4.10 sets a formula: a single-story building's wall signs facing a street can total 2 sq ft per foot of street frontage plus 1 sq ft per foot of building frontage. Taller buildings earn 10% more per story, capped at 50% over the single-story figure. Individual-letter signs that use the wall as background get a 20% bonus. California gives each city its own sign code rather than one statewide rule, so a location in the capital follows Sacramento’s sign ordinance instead of this formula.
On top of that, §14.4.10 A.5 caps the combined area of all your signs — wall, projecting, monument, pole, roof, window — at 4 sq ft per foot of street frontage. Owners who max out the wall-sign formula and then add a monument or window sign are the ones who blow past the combined cap. A sign violation in LA is a misdemeanor, so this is worth checking before you build.
How to apply for a Los Angeles sign permit
LA does not hand you a district table — it hands you a formula, and then a plan check that rewards a complete first submission.
1. Run the LAMC §14.4.10 formula
A single-story building’s wall signs facing a street can total 2 sq ft per foot of street frontage plus 1 sq ft per foot of building frontage. Taller buildings earn 10% more per story, capped at 50% over the single-story figure.
2. Check whether the individual-letter bonus applies
Individual-letter signs that use the wall as background get a 20% bonus.
3. Flag digital displays and overlay areas
Digital displays fall under LAMC 14.4.4 and need their own review, and many areas restrict or ban them. HPOZ and Sign District locations add review rounds.
4. Submit a complete LADBS package the first time
Site plan, elevation drawings, stamped structural calculations, owner consent, and Title 24 documents for illuminated signs. This is the single biggest way to avoid resubmission delays.
Steps assembled from the confirmed items on this page. Fees and what drives the schedule are covered in "Cost, timeline & temporary banners" below — not repeated here.
Questions owners ask
What's "street frontage" vs "building frontage"?
Street frontage is the width of your lot along the street. Building frontage is the width of your building wall facing that street. The formula uses both.
Does my zoning change the number?
For commercial and manufacturing zones (C1, C2, C4, CM, M1, etc.) the wall-sign formula is the same. Residential zones and specific-plan areas have different rules — if your address is in one, we'll tell you and route you to a pro.
Digital / LED sign?
Digital displays face separate restrictions (LAMC 14.4.4) and many areas restrict or ban them. This screen covers static and illuminated wall signs; a digital sign needs its own review.
Is this an official ruling?
No. It's a first-pass risk filter on the public LAMC formula, not a permit and not legal advice. Final dimensions are confirmed by a licensed LA sign professional and LADBS.
Cost, timeline & temporary banners
What does an LA sign permit cost?
LA doesn't use a flat sign fee. LADBS calculates the permit from the sign's construction valuation, then California adds four statewide surcharges (Strong Motion Instrumentation, Building Standards, Green Building, plus LADBS's own surcharges). LA is known for some of the highest sign-permitting costs in the country — fees, structural calculations, and Title 24 energy compliance (for illuminated signs) all land on top of the fabrication quote, and Article 4.4 sets none of those amounts. HPOZ and Sign District locations add review rounds and cost.
How long does approval take?
LADBS publishes no review or processing time for sign permits, so this page gives no number. The path drives it: a temporary banner, a full LADBS plan check for a complex illuminated wall sign, and anything needing a variance, a digital display approval or HPOZ/Sign District review are separate queues, longest last. Submitting a complete package — site plan, elevation drawings, stamped structural calculations, owner consent, Title 24 docs — the first time is the single biggest way to avoid resubmission delays.
Can I hang a "Grand Opening" banner first?
Not automatically exempt. Article 4.4 sets sign area and height, not permit exemptions — the thresholds that let a small or window sign go up without a permit sit in LADBS’s permit rules, so confirm there before you hang anything, since a citation and forced removal costs more than the permit.
Source: Los Angeles Department of Building and Safety (LADBS) permit and temporary-sign guidance; California statewide permit surcharges. Fees and timelines change — confirm current figures with LADBS before filing.
Sources and official references:Los Angeles Municipal Code — Article 4.4 Sign Regulations, §14.4.10 Wall Signs (article cover: Article 4.4). Measured on 21 September 2026: both sections read as text through our collector, and every sign-area figure on this page — the per-foot wall allowance, the per-story increase and its ceiling, the increase for individual letters, and the combined cap for all sign types — appears in §14.4.10. The code spells several of those figures out in words, so the weekly check, which compares digits, does not always match them. Article 4.4 sets sign size and placement only; permit exemptions and fees live elsewhere, so this page no longer quotes exemption thresholds.
Last inspected against the official code: June 2026 · confirm current rules with the city before you file