Seattle · Land Use Code SMC 23.55

Seattle sign permit: what to file, in what order

Seattle regulates signs by the zoning of the property they're on — a sign that's legal in one zone may be banned in the next. There's no single citywide formula. Here's what actually controls your sign, when you need a permit, and the special-district traps that catch new owners.

30-second risk check

No address, no measurements — just tap Yes or No. This flags where a Seattle sign gets risky.

Do you know your sign count limits — one Type A (ground/roof/projecting) per 300 ft of frontage, one Type B (wall/awning) per 30 ft?

In an RC zone, will your total sign faces exceed 170 sq ft, or any single face exceed 85 sq ft?

Will the sign rotate, flash, or display moving/changing images?

Is your business in the Pike/Pine Conservation Overlay or a similar overlay?

Will any sign be over 5 sq ft or electrical (both need a permit)?

Seattle's sign rules change zone by zone.

Under the Seattle Land Use Code (SMC 23.55), what you're allowed depends on whether you're in a neighborhood commercial zone, a downtown zone, an industrial zone, or a mixed-use zone — and on overlays like shoreline, historic preservation, and special review districts. The city's own guidance warns the code is complex enough that questions can't be answered by phone. That's why a one-line frontage calculator doesn't work here.

The numbers that are confirmed citywide

Across zones, these are confirmed in the Land Use Code and SDCI's own permit guidance. Use them as a sanity check before you talk to a fabricator:

Signs are allocated by frontage, by type. A business establishment may have one "Type A" sign (ground, roof, projecting, or combination) for each 300 linear feet of public-right-of-way frontage, plus one "Type B" sign (wall, awning, canopy, marquee, under-marquee) for each 30 linear feet of frontage.
In RC zones, total sign area is capped. The maximum total of all sign faces per business is 170 sq ft, no single sign face over 85 sq ft, and no sign taller than 15 ft. Other zones set their own caps.
Sign area is generally tied to your business frontage, then adjusted by your specific zone's limits.
A sign permit is required once a sign exceeds 5 sq ft or is connected to electrical power (including outline and border tube lighting).
Electrical signs must be installed by a licensed electrical contractor (unless installed by the owner), and an electrical permit is included with the sign permit.
Corner exception: if your business has an entrance on a second street frontage (around the corner), a second sign is allowed near that entrance.

Source: Seattle Municipal Code §23.55.028, §23.55.030 (Type A/B sign allowances), §23.55 (RC zone caps); Seattle SDCI permit guidance (Tip 126). Confirmed June 2026.

⚠ The special-district trap

Parts of Seattle — shoreline districts, historic preservation areas, and special review districts — carry additional, stricter sign requirements on top of the base zone rules. Signs projecting over the public right-of-way must also meet SDOT Director's Rule 05-2023. If your storefront is in one of these areas, the standard zone allowance is not the final word, and review takes longer.

Who can pull the permit?

All sign permit applications go through the Seattle Services Portal, and SDCI reviews your plans against the code before issuing. If your sign is electrical, the electrical permit is bundled in — but the work must be done by a licensed electrical contractor unless you (the owner) do it yourself. For anything illuminated, projecting, or in a special district, most owners hire a licensed Seattle sign company that confirms the zone rules and handles the permit end to end.

Get a free quote from a licensed Seattle sign contractor

Skip decoding which zone and overlay you're in. A licensed local pro confirms your exact allowance, checks shoreline/historic/special-review rules, and handles the permit.

How to apply for a Seattle sign permit

Seattle bundles the electrical permit into the sign permit, so the sequence is shorter than most cities — but the trigger for needing one at all is unusually low.

1. Confirm your zone

It decides what is allowed; the allowance is zone-specific, which is why the city says the question cannot be answered by phone.

2. Count what your frontage allows

Type A signs one per 300 ft of frontage, Type B signs one per 30 ft.

3. Test the permit trigger — and note it is not only signs

A sign permit is required once a sign exceeds 5 sq ft or is connected to electrical power — including outline and border tube lighting. The same permit also covers awnings: installing one, altering one, re-covering an existing awning with new material, or changing or adding a business name on an existing awning. Recovering an awning you already have is a permit event, which catches owners who think they are doing maintenance.

4. Settle which application type you are filing

SDCI runs two: on-premises signs, which identify the business at its own location (and may also carry non-commercial messages), and off-premises advertising signs — billboards. Most new permits are on-premises. Billboards are a closed class: registrations must be renewed every year and are limited to existing registration numbers, so a new billboard is not a permit question.

5. Clear the two approvals that must come BEFORE you apply

SDCI is explicit about the order, and getting it backwards means filing an application that cannot be issued. If the sign projects over a public right-of-way — a street, sidewalk, or alley — you must obtain the SDOT street-use permit first, before you apply for the sign permit; it is a second, separate permit, renewed annually, and it does not end when the sign is installed. And if the sign is in a historic or special review district, or on the same lot as a landmark structure, you need a certificate of approval from the Department of Neighborhoods before you apply — the lot condition catches sites that are not themselves in a district. Shoreline districts add their own sign standards, and projecting signs must also meet SDOT Director's Rule 05-2023.

6. Check what your sign has to satisfy, not just where it sits

SDCI lists five codes the sign must meet, and two of them are the ones owners forget: the Seattle Building Code, the Electrical Code for wiring, installation and listed equipment, the Energy Code for controller and exterior lighting-limit requirements, the Sign Code zoning rules for location, size and quantity, and Historic Preservation requirements in Special Review Districts. An illuminated sign is an energy-code object as well as an electrical one.

7. File the right permit type in the Seattle Services Portal

Select the "Sign, Awning, and Canopy Permit" — that is the exact item name, and searching the portal for anything else will not surface it. SDCI reviews your plans against the code before issuing. If the sign is electrical the electrical permit is included with the sign permit, but the work must be done by a licensed electrical contractor unless you install it yourself. Filing online is the standard route; if you need to ask in person, the SDCI counter is at 700 Fifth Avenue, Suite 2000, Seattle, WA 98104, and the permit line is (206) 684-8600.

8. Pay in the structure the City uses

Fees are paid in full when you apply. If your application is one that goes to review, you pay 75% up front and settle the balance before the permit is issued — so the permit can be complete on the City's side and still not be in your hands until the remainder clears.

9. Book the footing inspection at least 24 hours before the pour

A ground or pole sign needs a footing inspection before the concrete foundation is poured, and SDCI sets the lead time: you must schedule it at least 24 hours before the concrete is delivered or the hole is permanently covered. Get this wrong and the fix is not paperwork — it is breaking out and re-pouring what you already built. Seattle also staffs this directly: the sign inspector's line is (206) 684-8419.

10. Pass the final inspection before the permit expires

This is the step that quietly costs the most. Every sign, awning, outline lighting and border tube installation must pass a final inspection before the permit expires. If the permit expires first, you may have to reestablish it and pay an additional fee — and if enough time has passed, you need a new permit and must comply with the regulations in force then, not the ones you designed to. A special inspection may also apply if the construction is complex enough to need a technical expert on the structure, attachments or soil; SDCI issues a special inspection schedule form to be completed by the engineer of record or the project owner.

Steps assembled from Seattle SDCI official permit pages (Sign, Awning & Billboard Permit; Fee Subtitle), with the zone and frontage figures from the confirmed items on this page. Fees and timing are handled in their own sections below — not repeated here.

Fees

We publish no amount here — a stale fee is worse than none, and SDCI says plainly that its fees may change annually. What is durable is the shape of the charge, and Seattle's is unusually legible: there is a basic fee for signs up to 32 sq ft, then an additional amount for each 10 sq ft increment above the first 32. Awnings, border tube and outline lighting are billed differently again — those are based on the total value of the project, including all labor and materials — and electrical fees are added for any electrically operated or illuminated sign. On top of all of it sits a separate technology fee. Payment timing matters too: fees are due when you submit the application, and where an application goes to review you pay a portion up front and settle the balance before the permit is issued — so the permit can be complete on the City's side and still not be in your hands. Confirm the current amounts in the City's Fee Subtitle at seattle.gov/sdci before you file.

How long it takes

Seattle is one of the few cities that states a turnaround itself, so the top line here is the City's own — not an industry estimate. The conditions attached to it are where the real schedule lives:

SDCI's stated turnaround

About one week to permit issuance — but SDCI attaches the condition in the same sentence: only when the application is complete, accurate, and does not require any corrections. City-published: Seattle SDCI, Sign, Awning & Billboard Permit

What resets that clock

A correction request. SDCI states it will either contact you with questions or notify you of corrections required before the permit is issued, so a single incomplete upload moves you out of the one-week case entirely. City-published: Seattle SDCI, same page

What has to happen before the clock starts

The SDOT street-use permit and the Department of Neighborhoods certificate of approval are prerequisites, not parallel tracks — the City requires both before you apply. Their own lead times sit in front of the one week, and a shoreline, historic, or special review district adds review on top. City-published: Seattle SDCI, same page

Why we quote no wider range

SDCI publishes a figure, so we do not add a secondary-source bracket next to it. Where your case falls outside the "no corrections" condition, ask SDCI at (206) 684-8600 rather than plan against a number nobody stands behind. No secondary source registered for this page — the City figure stands alone

Every timing statement above is City-published by Seattle SDCI. No secondary-source estimate appears on this page because the City publishes its own figure; we do not stack an industry bracket on top of it.

Seattle sign checklist

Before you design or order anything, confirm:

What's my zone? (Sign rules differ across commercial, downtown, industrial, and mixed-use zones.)
Do I have the right number of signs for my frontage? (Type A: one per 300 ft; Type B wall/awning: one per 30 ft.)
Is my sign over 5 sq ft or electrically powered? → permit required.
Is it illuminated? → licensed electrical contractor + electrical permit.
Am I in a shoreline, historic, or special review district? → expect stricter rules and longer review.
Does my sign project over the sidewalk/street? → must meet SDOT Director's Rule 05-2023.

Official Seattle resources

Go straight to the city for permits and the binding code:

Seattle SDCI Sign, Awning & Billboard Permit — applications, the Seattle Services Portal, and Land Use Code 23.55.

SDCI — How Much Will Your Permit Cost? — the 75% due at application and the balance before issuance are stated here.

I'm a new business owner and English isn't my first language — where do I start?

First confirm your zone — it decides what's allowed. Then check how many signs your frontage allows (Type A one per 300 ft, Type B one per 30 ft) and whether your sign is over 5 sq ft or electrical (both need a permit). Because the code is zone-specific and overlays are common, most owners hire a licensed sign company that confirms the rules and pulls the permit as part of the job.

Why can't this page just tell me my exact square footage?

Seattle's allowance depends on your specific zone, your frontage, and any shoreline/historic/special-review overlay — variables that need site-specific confirmation, which is why the city says questions can't be answered by phone. We give you the confirmed caps and the official sources so you don't get blindsided.

This is an informational guide based on the public Seattle Land Use Code (SMC 23.55) and SDCI permit guidance, not a permit, legal advice, or a guarantee of compliance. Sign allowances in Seattle depend on zoning, frontage, and district overlays that require professional confirmation. Always verify with Seattle SDCI and a licensed Seattle sign contractor before designing, ordering, or installing a sign.

Other US city sign guides

New York Chicago Los Angeles Dallas Atlanta Philadelphia San Francisco Miami Fort Worth Phoenix Austin Houston San Diego San Antonio

Sources and official references: Seattle SDCI — Sign, Awning and Billboard Permit · SDCI — How Much Will Your Permit Cost. Measured on 21 August 2026: these SDCI pages carry the exemption threshold and the prepayment share quoted here. The combined and single-face area caps come from the Land Use Code, published only as a PDF fee-and-code subtitle we could not extract, so those go unchecked.

Last inspected against the official code: June 2026 · confirm current rules with the city before you file