It costs between $2,000 and $5,000 to install a traditional stair chair lift on a straight flight of stairs, according to CostHelper.com. Lifts for stairs that have curves or landings may cost as much as $15,000 or as little as $5,000, depending upon the complexity of the installation.
The type of chair selected also affects price. Battery-operated chair lifts that continue to work during power outages are more expensive than typical electric models that do not. Homeowners may incur extra costs if their staircases need reinforced before chair installation. Organizations such as the National Association of Area Agencies on Aging may be able to help with some of the cost.