Stair lifts for narrow stairs
One stair lift here is made for narrow stairs only 26 inches wide, though most straight models need about 28 inches and curved models about 30. Start with the model's minimum stair width and how far it extends from the wall when folded, then ask the installer to confirm whether it fits your staircase.
- Narrowest staircase among our picks 26 in (Acorn 130)
- Thinnest folded footprint 10.5 in off the wall (Harmar Pinnacle SL600)
- Typical width required roughly 28 in for straight staircases, 30 in for curved
- Models in this comparison 16

Stair lifts for narrow stairs compared
| Model | Weight limit | Folded, from wall | Narrowest stairs | Installed price |
|---|---|---|---|---|
| 280 lb heavy-duty version: 350 lb | 12¼ in | 26 in manufacturer's figure | $3,000–$5,000 estimate from review sites | |
| 350 lb | 14½ in | 27 in manufacturer's figure | $4,700 published: the manufacturer's installed price | |
| 265 lb | 13¼ in | 27½ in manufacturer's figure | $8,000–$15,000+ estimate from review sites | |
| 350 lb | 10½ in | ≈ 28 in usual guide | $5,380 published: lift + fitting, one dealer | |
| 350 lb | 10¾ in | ≈ 28 in usual guide | $4,135 published: lift + fitting, one dealer | |
| 300 lb | 11 in | ≈ 28 in usual guide | $4,365 published: lift + fitting, one dealer | |
| 350 lb | 11 in | ≈ 28 in usual guide | $2,749–$4,249 estimate: lift price + usual fitting | |
| 300 lb | 12 in | ≈ 28 in usual guide | $3,500–$5,000 estimate: lift price + usual fitting | |
| 310 lb | 12⅝ in | ≈ 28 in usual guide | $3,799–$5,299 estimate: lift price + usual fitting | |
| 400 lb | 15⅛ in | ≈ 28 in usual guide | $5,499–$6,999 estimate: lift price + usual fitting | |
| 350 lb heavy-duty version: 440 lb | 15¼ in | ≈ 28 in usual guide | $3,990–$5,490 estimate: lift price + usual fitting | |
| 600 lb | 16½ in | ≈ 28 in usual guide | $8,230 published: lift + fitting, one dealer | |
| 400 lb | 15 in | ≈ 30 in usual guide | $12,000–$25,000+ published: a dealer's installed range | |
| 350 lb | 16 in | ≈ 30 in usual guide | $11,495–$12,995 estimate: lift price + usual fitting | |
| 300 lb heavy-duty version: 352 lb | 16 in | 30 in manufacturer's figure | $10,800 published: the manufacturer's installed price | |
| 275 lb | 16½ in | ≈ 30 in usual guide | $10,499–$11,999 estimate: lift price + usual fitting |
Only Acorn and Stannah publish a minimum stair width for their models. ≈ marks the usual planning guide (28 in for straight stairs, 30 in for stairs that turn); the installer measures your stairs before quoting.
Ask for a written quote
Our Pick for the Narrowest Stairs
The Acorn 130 works on straight stairs from 26 inches wide. None of the other 15 models we compare here can handle a staircase that slim. Acorn says that even at this width there is space for the rider to turn around at the top. The seat swivels, so you get off facing the landing rather than looking down the stairs.
The Acorn 130 handles up to 280 lb, or 350 lb if you pick the heavy-duty version. Reviewers estimate $3,000 to $5,000 with installation; Acorn itself quotes a price once it has measured your home. The warranty from the manufacturer runs 12 months.
If your stairs are 27 inches wide, you have a second option: Stannah offers a narrow Siena chair, and its Siena 600 fits straight stairs from 27 inches.
Which Lifts Fold the Smallest?
When it is not in use, the lift folds up close to the wall. That gap between wall and folded chair shows how much room the lift still blocks for anyone climbing the stairs. Stannah and other brands measure the folded lift a little differently, so the numbers don't always line up. Across these models, a folded lift sits 10.5 to 16.5 inches from the wall. Check the figure for the model you like, and ask the installer how much walking room it leaves.
Here are the models that tuck in closest:
- Harmar Pinnacle SL600 folds to 10.5 in
- Savaria K2 folds to 10.75 in
- Harmar Pinnacle SL300 folds to 11 in
- AmeriGlide Rave 2 folds to 11 in
- Bruno Elan folds to 12 in
All five work on straight staircases of 28 inches or wider. A lift that folds close to the wall leaves more room for everyone else on the stairs, but it still needs the same stair width.
All 16 Models Compared
This table covers all 16 models, beginning with the ones built for the narrowest staircases. Prices are drawn from manufacturers, reviewers, or single dealers, so treat them as a ballpark rather than a firm quote.
The typical weight limit for these lifts is 350 lb. The Harmar Pinnacle SL600HD goes highest at 600 lb, and the Acorn 180 sits lowest at 265 lb.
Warranties vary quite a bit. The Bruno Elan and Bruno Elite Curved come with a limited lifetime warranty, while Acorn models are covered for 12 months. The three Harmar Pinnacle models cover the toothed rail the lift climbs (the gear rack) for 10 years and the battery for one year, and the Harmar Helix has 2 years on parts and a limited lifetime on the drive system.
Standing Lifts
All the lifts here have a seat. If standing suits you better, ask a dealer about standing models and have them measure your stairs.
Curved Stairs
Curved stairs usually need a little more width than straight ones. Stannah puts the usual requirement at roughly 30 inches for curved stairs, versus roughly 28 inches for straight.
The Acorn 180 breaks that rule on our list. It works on curved staircases down to 27.5 inches, and no other curved model here fits stairs under 30 inches. Its weight limit is also the lowest of the group, at 265 lb. Every remaining curved model needs the full 30 inches.
Curved lifts generally cost more: the National Council on Aging estimates $8,000 to $12,000 installed, compared with $2,500 to $5,000 for a new straight lift.
Measuring Your Stairs
Installers measure differently depending on the model they're fitting. Lifeway Mobility, for instance, wants to see a straight staircase of roughly 28 to 30 inches, model depending. This is what each width gets you on our list:
| Staircase width | Straight choices | Curved choices |
|---|---|---|
| 26 in | One (Acorn 130) | None |
| 27 in | Two | None |
| 28 in | All 11 straight models | One (the Acorn 180) |
| 30 in and wider | All 11 straight models | All 5 curved models |
Since every brand sets its own minimum, the measurement an installer takes for your chosen model is the one that matters.
Cost
Nothing in our figures suggests narrow stairs affect the price. Stair length does, though, since extra length means extra rail, the track the seat glides along. The National Council on Aging says a brand-new straight lift runs $2,500 to $5,000 installed; used units go for $1,500 to $3,000.
| Steps | Track length | Rough installed price, brand-new lift |
|---|---|---|
| 8 | Roughly 10 ft | Roughly $2,500 to $5,000 |
| 13 | Roughly 16 ft | Roughly $2,575 to $5,075 |
| 16 | Roughly 19 ft | Roughly $2,800 to $5,300 |
| 20 | Roughly 23 ft | Roughly $3,100 to $5,600 |
Our cost tool uses a 15.5-foot standard rail; this is an assumption for the estimate, not a specification for every lift. Beyond that, each extra foot adds roughly $75, so a staircase of 20 steps comes to roughly $600 extra versus a short one.
How We Worked This Out
We start from the going installed price bracket for a new straight lift. If a rail runs past 15.5 feet, each extra foot adds about $75 to both ends of the range.