The single biggest factor in choosing a stair lift is simple: does your staircase have any turns or landings?

Straight Stair Lifts

If your staircase runs in one straight line from bottom to top, with no turns, a straight lift is all you need. These use a standard-length rail and are typically installed within a day.

Curved Stair Lifts

Any turn, landing, or change in direction requires a curved lift, where the rail is custom-measured and fabricated specifically for your staircase. This takes longer to order (often several weeks) and costs significantly more — see our stair lift cost guide for specific ranges.

How to Tell Which You Need

Walk your staircase and count the distinct straight sections. If it’s a single uninterrupted run, you likely need a straight lift. If there’s even one 90-degree turn or a landing partway up, plan for a curved lift and its longer lead time and higher cost.

A Note on Multi-Story Homes

If a home has more than one staircase or multiple flights, get a quote for the full scope up front — pricing multiple flights separately can miss volume savings some installers offer.

Next Steps

Once you know which type you need, see our full cost guide to budget accordingly.