Maine · Sign permitting
Commercial sign permits in Maine.
Maine is one of only four U.S. states that ban off-premise billboards outright. The Legislature prohibited them in 1977, and the last billboard came down around 1984. So roadside business visibility flows through MaineDOT's state-run directional and logo-sign programs rather than billboards, while the actual storefront sign is permitted town by town under local codes layered over statewide on-premise caps in Title 23.
What makes Maine different
- Maine's statewide billboard ban (enacted 1977, effective 1978, fully implemented by about 1984) reorganizes how signage works: there's no off-premise/billboard market, so roadside visibility flows through MaineDOT's state programs — Official Business Directional Signs (OBDS), the Interstate Logo program, and tourist-directional signs — rather than private billboard companies.
- Statewide on-premise caps in Title 23 §1914 apply on top of local zoning (and the stricter rule controls): generally a maximum of 10 on-premise signs per property, height up to about 25 feet, shielded lighting, and flashing or moving lights prohibited.
- Tourism gateway towns near Acadia (Bar Harbor) add historic-district design review and dark-sky lighting limits that frequently bar internal illumination and neon entirely.
Statewide rules that apply broadly
Statewide billboard ban + MaineDOT programs
Traditional off-premise billboards are illegal statewide. Roadside business visibility is provided only through MaineDOT-administered programs — Official Business Directional Signs (OBDS), the Interstate Logo program (gas/food/lodging/camping/attractions), and tourist-oriented directional signs — applied for through MaineDOT Right-of-Way Control, with required local approval.
Statewide on-premise caps (Title 23 §1914)
On-premise signs face statewide limits on top of local zoning: generally a maximum of 10 on-premise signs per property, height up to about 25 feet (or 10 feet above the roofline if roof-mounted), tighter limits near interstates, shielded and non-glaring lighting, and no flashing or moving lights. The stricter of the state or local rule controls.
The typical permit process
- 01For on-premise signs, apply to the municipal Code Enforcement / Permitting department, generally with a scaled drawing showing dimensions, mounting, location, and illumination (many towns also require photos).
- 02In Portland, submit the Signage/Awning Permit electronically; a UL Classification Mark is required for illuminated signs and a certificate of flammability for awnings/canopies.
- 03In Bangor, the application needs the fee plus scaled plans, and the permit is void if work isn't completed within six months.
- 04In historic or design-overlay districts (Portland's 12 historic districts, Bar Harbor's districts), expect additional design review and tighter rules (often no internal illumination), and build in extra time.
- 05Meet the statewide on-premise caps in Title 23 §1914 on top of local rules.
- 06For roadside directional/logo visibility (the role billboards play elsewhere), apply separately to MaineDOT for an OBDS or Interstate Logo sign if eligible, with required local approval.
Notable jurisdictions
Portland
The largest city; the Signage/Awning permit is filed electronically through Permitting & Inspections, with a UL Classification Mark required for illuminated signs. The city has 12 historic districts where design review applies and tighter rules govern signage.
Bangor
Sign permits are governed by the Land Development Code (Chapter 165); applications need the fee plus scaled plans, and the permit is void if the sign work isn't completed within six months of issuance.
Bar Harbor
An Acadia gateway town with strong controls — internally illuminated signs are prohibited in its Downtown, Town Hill, and Village Historic Districts, outdoor neon is generally prohibited, roof signs are limited, and a Dark Skies lighting ordinance limits brightness.
Lewiston
Sign rules are in the Zoning and Land Use Code (Appendix A, Article XII), with specific provisions such as temporary-sign caps and preserving passable pedestrian area; some limited signage is allowed without a permit.
MaineDOT (statewide roadside programs)
The de facto regulator for roadside business visibility — administering Official Business Directional Signs, the Interstate Logo program, and tourist-oriented directional signs, the lawful substitutes for banned billboards.
On timelines
Timelines are highly jurisdiction-dependent. A straightforward storefront sign in a town with a simple code-enforcement process can move quickly (over-the-counter to a few days or weeks) once a complete scaled application is in. Projects in historic districts or design overlays (Portland's 12 districts, Bar Harbor's) add a design-review step that can extend the timeline by weeks. Roadside directional/logo signage runs on a separate MaineDOT track with its own application and fabrication steps. Confirm with the municipal code office and, if applicable, MaineDOT.
What adds review, time, or cost
- Off-premise billboards are illegal statewide. Roadside visibility flows through MaineDOT's OBDS, Interstate Logo, and tourist-directional programs.
- Illuminated signs need a UL Classification Mark (Portland) and trigger electrical review.
- Historic districts and dark-sky towns (Bar Harbor) often bar internal illumination and neon entirely and add design review.
- Statewide on-premise caps (Title 23 §1914) apply on top of local zoning, with the stricter rule controlling.
Title 23 defines 'categorical signs' (certain temporary, governmental, non-commercial, and vehicle signs) with specific state exemptions, and towns set their own local exemptions, but a billboard is never an option, and the statewide on-premise caps still apply. Confirm with the municipality.
Questions people ask
Can I put up a billboard in Maine?
No. Maine banned off-premise billboards in 1977 (effective 1978), and the last one came down around 1984. It's one of only four billboard-free states. Roadside business visibility instead flows through MaineDOT's Official Business Directional Sign, Interstate Logo, and tourist-directional programs.
How do I get my business visible from a Maine highway without a billboard?
Through MaineDOT's state programs — Official Business Directional Signs (small standardized directional signs) and the Interstate Logo program (renting space on official gas/food/lodging/attraction logo signs). Both require local approval and run on MaineDOT's track.
What's different about signs in Bar Harbor?
A lot. As an Acadia gateway town, Bar Harbor prohibits internally illuminated signs in its historic districts, generally bars outdoor neon, limits roof signs, and enforces a Dark Skies lighting ordinance, so illuminated and internally lit signs that are routine elsewhere often aren't allowed.
Sources
- Maine Title 23 §1914 (on-premise signs)
- Maine Title 23 Ch. 15 (protection of highways)
- MaineDOT — business & directional sign programs
- NRCM — Maine's billboard ban
- City of Portland — sign permits
- Bangor Land Development Code Ch. 165 (signs)
- Bar Harbor — sign requirements
Informational only, not legal advice. Sign codes and fees change and vary by jurisdiction — confirm current requirements with the local department before you rely on them.