Industries / Medical and dental

Medical and Dental Office Signs

Help first-time patients find the right building, entrance and parking without a phone call.

The short answer

A medical or dental office sign has to help first-time patients find the right building and entrance, often inside an office park or plaza. It needs a legible practice name, clear direction to parking and the door, and wording that stays within the profession's advertising rules.

Reviewed by the Suntronix team

Quick answers

Common questions.

Can a general dentist's sign say "orthodontics" or "implants"?

Under the ADA Code of Ethics, general dentists may announce services if they avoid implying specialization and state that general dentists provide the services. Have the dentist approve exact wording, and check your state dental board's advertising rules as well.

How big should the letters be on a medical office sign?

Size for the approach. USSC rules of thumb call for about 12-inch capital letters on a 30 mph two-lane road and about 22 inches on a 45 mph four-lane road. Inside an office park, where drivers are slow and close, smaller letters work.

Does a medical office need a permit for a sign?

Usually. Most cities require permits for signs over a certain size or height, and lighted signs need electrical work. In a leased building, you also need the landlord's written approval under the sign criteria.

Is an LED message center worth it for a clinic?

Only if the information changes often, such as seasonal clinics, extended hours or new providers. Otherwise a well-lit static sign costs less and does the job. If you add one, office-zone codes often require slower message changes; the USSC model code uses 8 seconds.

Should a medical sign be lit all night?

Usually not. Light it for your operating hours plus arrivals, using a timer or photocell. Some codes near residential areas require overnight shutoff; Spokane, for example, requires institutional message centers in residential zones to be off from 10 pm to 6 am.

Sources

Figures on this page come from the publishers below. They are general, third-party references rather than Suntronix pricing or specifications, and your site, local code and product choice will change them. Last reviewed .

  1. United States Sign Council - Sign Legibility Rules of Thumb (2006) (accessed Sep 23, 2026)
  2. American Dental Association - Principles of Ethics and Code of Professional Conduct (advisory opinions revised to March 2023) (accessed Sep 23, 2026)
  3. USSC Foundation - Model On-Premise Sign Code (a model, not law) (accessed Sep 23, 2026)
  4. City of Spokane, WA - Municipal Code 17C.240.220, Standards in Residential Zones (one city's example) (accessed Sep 23, 2026)
  5. City of Spokane, WA - Municipal Code 17C.240.247, Electronic Message Center Signs (one city's example) (accessed Sep 23, 2026)
  6. GE Structured Products - Lexan SG305 Sheet for Signs, product data sheet (accessed Sep 23, 2026)
  7. HomeGuide - How Much Does a Business Sign Cost? (Dec. 19, 2023) (accessed Sep 23, 2026)

Start at the property

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A Suntronix representative meets you at the site, reviews the approach, viewing distance, structure and power, then designs and prices the sign around it. Send the address, a few photos and your logo to start.

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