Chair Stair Lift Cost A straight stair lift installed in the home typically costs about $3,000 or more. A curved lift cost varies based on many factors, but prices start around $6,500 and increase with the complexity of your stairs and optional features. Of course, buying a stairlift with more features costs extra, but is often worth the price if the lift will be used multiple times each day. What is the factors of affecting the price? 1-Types of the stair lift Straight stair lifts are the most common stair lift and are perfect fit for your staircase with no turns and level landing. As a result of needing less customization, straight stair lifts are also less expensive than a curved stair lift. 2-The length of the staircase As we all known,the lift travels on a track fixed to the stairs alongside the stairway. The longer the stair is, the more expensive the material costs. 3-Optional configuration cost Many stairlifts include comfort and convenience features, but whether a feature is standard or optional, it may affect the final price. While swivel seats, safety belts, and a battery backup usually come standard The larger load capacity,the faster speed is optional.