Creating a Signage System for Large Buildings

Large floor number sign with a floor by floor directory next to an elevator

In a hospital, a campus or a multi floor office, people get lost in ways that cost time and patience. A 1990 Georgia Tech study of Emory University’s hospital estimated that giving directions to lost visitors cost more than $220,000 a year, about 4,500 staff hours, as reported by the University of Salford. The fix is not more signs. It is a system.

Gogi Signs plans and builds sign systems for large buildings across New Jersey and New York City. This guide shows how to build one, using the methods in federal wayfinding standards, and which signs the codes require.

In this guide

Plan From Macro to Micro

Plan from macro to micro: site and parking, building entrance and primary directory, elevator lobby and secondary directory, floor and zone, corridor and room
Each level hands off to the next

The Defense Health Agency’s wayfinding standards require systems to be organized in a macro to micro format: site, building, floor, then room. Each level answers one question and hands off to the next. Primary directories go near main entrances, and secondary directories go at elevator lobbies and major intersections.

Build the System From Sign Families

A sign family is a set of signs that share one look: identification, directional, informational and regulatory signs, as HOK describes in its wayfinding primer. HOK also notes that the more complex the wayfinding problem, the simpler the solution needs to be. Keep the number of sign types small and use each one the same way everywhere. Our sister graphics shop, Pixel Wraps, applies the same idea to fleets in how to adapt one wrap design to different vehicles.

Large wall mounted directory with many tenant listings in a lobby
Primary directories go near the main entrances

Fix the Names and Numbers First

Numbering rules

Based on DHA and VA wayfinding standards

Use Zones and Color With Care

Large buildings are easier to understand when they are split into zones, such as North Tower and South Tower or Blue Zone and Green Zone. The Defense Health Agency requires zone or color coding designations. HOK notes that color can work as a beacon for an area, and gives each floor of one research institute its own color. Do not rely on color alone. Always pair it with a name or number for people who cannot tell the colors apart.

Floors, Elevators and Directories

The VA says floor identification signs should go next to or near elevators and exits. In New Jersey, elevator identification numbers must be at least 1 1/2 inches high and contrast with the background, under N.J.A.C. 5:23 12.12, as quoted by the Department of Community Affairs. A floor directory facing the elevator doors tells people where they are and which way to turn. See our floor number signs and directory signs.

Brushed metal floor identification sign with a large number
Large floor numbers help people confirm where they are

The Signs the Codes Require

Stair identification sign specs: required at each floor landing in exit stairs connecting more than three stories; bottom of sign 5 feet above the floor; at least 18 by 12 inches; floor number at least 5 inches; shows the floor, the stair name, top and bottom levels and roof access

Source: ICC Building Safety Journal; check your local code edition

NYC Stair and Elevator Rules

New York City has its own long standing rule for buildings with an elevator. Every floor except the main entrance floor needs an elevator landing sign that reads In case of fire, use stairs unless otherwise instructed, with a floor diagram showing the stairs and each elevator bank, and the top of the sign no higher than six feet. Inside each stair, floor numbers must be at least three inches tall, under rule 1 RCNY 27 01. Our sister company in New York covers building signs for NYC owners in its HPD building signs guide.

Framed evacuation plan with a floor diagram and emergency instructions

Floor diagrams show the way to the stairs

Parking Garages

Garages are where many visits start. The VA says parking structures over three levels should consider color coding each level, and that local images, such as landmarks or sports teams, can also identify levels. It also says text read from a moving car should never be smaller than 3 inch capital letters, compared with a 1 1/2 inch minimum for people on foot, in its parking structure guide.

Plan Outside In and Early

Start with how people arrive: the road, the garage and the main doors. Then work inward. The AIA recommends addressing signage in early design and suggests 5 to 7 percent of buildout cost as a realistic budget, in its best practices guide. Planning early lets you set room numbers, power and blocking before construction. Read planning customer wayfinding for the route walk method.

In case of fire sign with four numbered steps and icons

Fire and evacuation signs are part of the system, not an afterthought

Static and Digital Directories

Digital directories are easy to update and can show maps, but they need power, data, software and someone to keep them current. Static directories with changeable inserts cost less, never go dark and meet most needs. Many large buildings use both: a digital screen in the main lobby and static directories at each elevator lobby. Whatever you choose, use the same names and zones as every other sign.

Accessibility Across the System

Every room sign in the system must meet the ADA tactile rules, and every directional sign must meet the visual rules for size and contrast. The Defense Health Agency recommends a background contrast of at least 70 percent compared with the text. Build these rules into the sign family from the start so every new sign complies.

Keep It Current

Departments move and tenants change. Use modular directories, changeable inserts and a master sign schedule so updates take hours, not weeks. Assign one person to own the system and approve every new sign so it matches the family. If you manage several sites, read multi location signage best practices.

Test Before You Install Everything

Before ordering every sign, mock up the key ones in paper or temporary vinyl and ask first time visitors to find a few destinations. Watch where they hesitate. The AIA also recommends a review after people move in, to catch problems the plans did not show.

Common Questions About Large Building Signage

What is a wayfinding signage system?

A planned set of sign families, names and numbers that guide people from the site to the room, using the same look and words everywhere.

Which wayfinding signs are required by code?

Usually stair identification signs, tactile exit signs, elevator fire signs, exit signs and tactile room signs. NYC adds its own elevator landing and stair sign rule.

How should rooms be numbered in a large building?

Start with the floor number, keep numbers consistent from floor to floor, and put even and odd numbers on opposite sides of each corridor.

Should we use color coding?

It helps in large buildings and garages, but always pair colors with names or numbers so no one has to rely on color alone.

What goes on a stair identification sign?

The floor number as the largest item, the stair name, the top and bottom levels of the stair and whether there is roof access.

When should wayfinding be planned in a new building?

In early design, so names, numbers, power and blocking are set before construction.

One System, Every Floor

We plan, build and install complete sign systems. See our wayfinding signs, then request a free quote.

Picture of Tony Kamal
Tony Kamal

Tony Kamal has been making signs for two decades and works at the Gogi Signs of New Jersey shop in Linden. Since 2025 he has also been researching permit rules, materials and lighting, and he writes these guides with input from our designers, fabricators and install crews.

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