Stair Lift Cost Guide: Price by Type and Home Layout

A straight stair lift installed on a single flight runs $2,500 to $5,000 in the US, UK, Canada, and Australia once currency is converted at local rates. A curved stair lift — the kind needed for any staircase with a landing, turn, or winder section — costs $10,000 to $20,000 because the rail is custom-measured and bent to match that exact staircase, not because the motor or seat is any different. Layout drives price far more than brand.

What Determines Stair Lift Cost

Rail is priced per linear foot, not per unit. Take a straight flight of 14 risers at 7.5 in / 190 mm each — a total rise of 108 in / 2.7 m. At a comfortable 30° stair angle, that rise needs roughly 13 treads of 10 in / 254 mm, putting the rail length at about 14 ft / 4.3 m. Straight rail runs $120–$180 per linear foot, and the base unit — motor, seat, carriage, battery pack — adds $1,500–$2,500. That flight lands at $3,700–$5,000 before installation labor, which is why the stair lift cost estimator asks for your actual rise, run, and rail length rather than working from a flat average.

Curved rail is priced per curve, not per foot. Each 90° turn or winder section adds $2,500–$4,000 to the rail cost on top of the base unit, because it has to be fabricated to a template taken on-site rather than cut from stock. A staircase with one 90° landing turn — an L-shaped stair — typically prices at $10,000–$14,000 installed. A full U-turn with two 90° sections runs $14,000–$20,000. Matching lift type to the real geometry of the stair, not a guess from looking at it, is the single biggest lever on the final quote.

Which Stair Lift Type Fits Your Staircase

Cost by type varies less by manufacturer and more by what the rail has to do. The table below reflects typical installed pricing in the US; UK and Australian pricing tracks closely once converted, with curved units skewing slightly higher in the UK due to import duty on rail steel.

Type	Cost range (installed)	Install time	Best use case
Straight indoor	$2,500–$5,000	2–4 hours	Single flight, no turns
Curved indoor	$10,000–$20,000	1–2 days (custom rail)	L- or U-shaped stairs, landings, winders
Outdoor / weatherproof straight	$3,500–$6,000	3–5 hours	Porch steps, deck stairs, exterior entries
Stand-up / perch lift	$2,000–$4,000	2–3 hours	Users who can’t bend knees fully but can stand
Reconditioned / used straight	$1,500–$2,500	2–4 hours	Budget installs on short, simple flights

Two specs move the price inside each category. Weight capacity: the industry-standard rating is 300 lb / 136 kg; a heavy-duty unit rated to 350–400 lb / 159–181 kg adds $300–$600. And battery backup: nearly every modern unit now includes it standard, holding enough charge for 2–3 rides during a power outage — worth confirming on used or reconditioned units, where the battery is often the first component to fail.

Common Mistakes

Ordering a straight-rail lift for a stair with a landing turn. Homeowners often describe a stair with a small mid-flight landing as “basically straight.” It isn’t — any change in direction means curved rail, and finding this out after a straight-rail quote has been accepted is the single most common source of change orders, typically adding $6,000–$10,000 mid-project. Measure or photograph the full run, including any landing, before requesting quotes.

Skipping the doorway clearance check. The carriage and folded rail add 12–14 in / 30–36 cm of width to the stair at the top and bottom landings. If a door swings across that space, it either has to be re-hung to swing the other way or fitted with a stop — both are labor add-ons that rarely show up in an initial phone quote.

Ignoring the rider’s actual weight against the standard rating. A 300 lb / 136 kg standard unit installed for a rider near that limit runs the motor at sustained peak load, shortening motor life well below the usual 10–15 year lifespan. If the rider is within 30 lb / 14 kg of the rated capacity, spec the heavy-duty unit from the start.

Not budgeting for electrical work. Most stair lifts need a dedicated outlet within a few feet of the top or bottom of the rail to charge the battery pack. Older homes without one nearby need an electrician to add a GFCI outlet, typically $150–$350, which most stair lift installers do not include in their base quote.

Related Calculators You Might Need

Before you get quotes, confirm the rail length you’ll actually need with the stair lift track length calculator, which takes your rise and run and outputs the linear footage a contractor will price against — useful for sanity-checking a quote that looks high. If the staircase is in a building open to the public or a rental unit, run it past the ADA stair compliance calculator first, since accessibility retrofits sometimes call for a platform lift instead of a stair lift. For staircases with any turn, the curved staircase calculator will confirm whether the geometry counts as curved before a quote comes back in the $10,000+ range. And if the stair lift is one piece of a larger renovation, the stair remodel/renovation cost calculator rolls it into the full project budget.

Frequently Asked Questions

How much does a stair lift cost to install?

Expect $2,500–$5,000 installed for a straight indoor flight and $10,000–$20,000 for a curved one. Run your exact rail length through the stair lift cost estimator before requesting quotes so you can spot an outlier bid immediately.

Does Medicare pay for a stair lift?

Original Medicare classifies stair lifts as a home modification, not durable medical equipment, so it does not cover the cost. Some Medicare Advantage plans and most long-term care insurance policies do cover part of it — check the specific plan document rather than assuming, since coverage varies significantly between insurers.

Can I put a stair lift on a curved staircase?

Yes, but it requires curved rail custom-fabricated to that staircase, which is why curved units cost $10,000–$20,000 versus $2,500–$5,000 for straight. The fabrication alone typically adds a week or more to lead time compared to a straight installation.

How long does a stair lift last?

A well-maintained unit lasts 10–15 years, with the battery pack and drive belt as the parts most likely to need replacement first, usually around year 6–8. Units run at or near their weight capacity limit tend to wear out faster on the motor side.

Is a used stair lift safe to buy?

A reconditioned unit from a dealer that re-certifies the motor and battery can be safe and runs $1,500–$2,500 installed. A private-sale used unit with no inspection is a bigger risk — battery packs degrade even in storage, and rail compatible with your exact stair angle is not guaranteed, so factor in a possible re-fabrication cost.