How to calculate the number of floors

Homeowners planning for a residential elevator often ask how to calculate the number of floors an elevator will serve. One common point of confusion is whether the level where the elevator is parked counts as a floor. The answer is yes, every level where the elevator stops is counted as a floor, including the level where it normally rests.

In residential elevator design, the number of stops refers to the number of landings or levels where the elevator provides access. Each landing where a door opens and a passenger can enter or exit is considered one floor served by the elevator.

For example:

• A home with a basement, main level, and second floor would be called a three-stop elevator.
• A home with a main level and second floor would be a two-stop elevator.
• If an elevator travels from a garage level to the main level only, it is considered a two-stop application, even if the elevator is typically parked at the garage level.

The parked position of the elevator does not reduce the floor count (stops). If the elevator opens at that level and serves it, it is counted as a stop.

Why the floor count matters

The number of floors a home elevator serves directly affects several aspects of the project. Equipment configuration must be designed for the specific number of stops, including rail length, wiring, and control systems. Cost is also influenced by floor count, as each additional level typically requires another door, additional hardware, and more installation time. Code compliance plays an important role as well, since residential elevator standards include safety and design requirements based on travel distance and the number of landings served. In addition, overall planning and layout including shaft height, pit depth, and overhead clearance are all determined by the total number of floors the elevator will serve.

Counting floors during planning

When determining how many floors your elevator will need to serve, simply count every level where you want the elevator to stop and open. Include:

• Basements
• Main living levels
• Upper floors
• Garage entry levels (if served)

Even if the elevator will spend most of its time parked at one level, that level is still part of the total floor count.

When in doubt

If you are unsure how to calculate the number of floors for your home elevator, reviewing your home’s layout and identifying each intended stop is the best starting point. Elevator contractors and designers can then use that information to recommend the proper equipment and configuration for the project.

Understanding how floors are counted early in the planning process helps avoid confusion and is key to accurate pricing, and keeps the installation aligned with both design expectations and code requirements.