Straight vs Curved Stairlifts: The UK Buyer's Complete Guide
Choosing between a straight and curved stairlifts is one of the most important decisions you'll make when adapting your home for mobility. The wrong choice can mean wasted money, installation delays, or a lift that simply won't fit your stairs. This guide cuts through the confusion and helps you decide which type is right for your home.
The decision is simpler than you might think: if your stairs are straight, choose a straight stairlift. If they turn, bend, or have landings, you need a curved one. Beyond that single rule lies cost, installation time, and practicality. We'll cover all three.
How to Tell If You Need a Straight or Curved Stairlift
Before we discuss the lifts themselves, you need to know what you're actually dealing with.
Straight stairlifts suit:
- Single, unbroken flights of stairs
- No landings or turns between floors
- Stairs that go consistently in one direction
Curved stairlifts are needed for:
- Stairs with a turn or bend in the middle
- L-shaped or U-shaped staircases
- Stairs with half-landings
- Multiple flights at different angles
- Winding or spiral stairs
The test: Stand at the bottom of your stairs and look up. If the entire staircase runs in one straight line from bottom to top, you need a straight lift. If the staircase changes direction at any point—even slightly—you need a curved one.
This is not negotiable. A straight stairlift cannot navigate a bend, and a curved one would be enormously wasteful on perfectly straight stairs.
Straight Stairlifts: How They Work and What to Expect
A straight stairlift is the simpler, cheaper option. It consists of a motorised chair that travels along a single, pre-manufactured rail fixed to one side of your staircase (usually the wall side).
How installation works
Installation is fast—typically 2 to 4 hours. An engineer will:
- Measure your staircase precisely
- Fit the pre-made rail to your wall or staircase structure
- Secure the chair mechanism and safety features
- Run electrical supply (either hardwired or plug-in, depending on your property)
- Test the lift thoroughly before handover
Because the rail is mass-produced and standard, engineers can work quickly. You'll be using the lift the same day.
Who straight stairlifts suit best
- Homeowners with single, uninterrupted flights
- Renters (models exist that can be removed without damage)
- Budget-conscious buyers—straight lifts are cheapest
- Those wanting quick installation
- People needing a fast solution to mobility problems
Straight stairlift costs (2026 UK prices)
- New models: £2,500–£5,000
- Reconditioned/refurbished: £1,200–£2,500
- Installation: Included in most packages
- Annual servicing: £150–£250
Straight stairlifts from reputable UK suppliers like Stannah, Acorn, and ThyssenKrupp are widely available and competitively priced.
Curved Stairlifts: The Bespoke Solution
A curved stairlift is built specifically for your staircase. The rail is custom-manufactured to match your exact staircase profile—every bend, landing, and angle is accounted for.
Why curved lifts cost more
The rail is bespoke. It's not off-the-shelf; it's made for you. That means:
- Measurement and surveying fees (usually £100–£200, sometimes waived)
- Weeks of lead time for manufacturing
- More complex engineering to navigate turns safely
- Higher labour costs for skilled installation
Installation time and process
Expect 1 to 3 weeks from order to installation. Here's why:
- Survey and measurement: 1–2 hours on-site
- Design and manufacturing: 10–14 days
- Installation: 4–8 hours (more complex than straight)
- Testing: Full safety checks on the curve sections
The curve itself requires careful calibration. Safety sensors must work correctly as the chair navigates the bend. Speeds are automatically reduced on the curve to prevent jerking or discomfort.
Who curved stairlifts suit
- Homeowners with L-shaped or U-shaped stairs
- Properties with multiple staircase changes
- Those with half-landings or intermediate landings
- People not willing to compromise on function (a curved lift can't be replaced with a straight one)
- Households where appearance matters—the lift follows the staircase line naturally
Curved stairlift costs (2026 UK prices)
- New models: £5,000–£12,000+
- Reconditioned (limited availability): £2,500–£5,000
- Installation: Included
- Annual servicing: £200–£350
Curved lifts are more expensive, but they're your only option if your stairs aren't straight.
Side-by-Side Comparison Table
| Factor | Straight | Curved |
| Installation time | 2–4 hours | 4–8 hours + 1–3 week lead time |
| New cost | £2,500–£5,000 | £5,000–£12,000+ |
| Reconditioned cost | £1,200–£2,500 | £2,500–£5,000 |
| Measurement fee | Usually waived | £100–£200 (sometimes waived) |
| Rail type | Pre-manufactured, standard | Custom-built for your stairs |
| Availability | Next-day or within days | 1–3 weeks |
| Resale/removal value | Good—can be moved or resold | Limited—tied to specific property |
| Maintenance costs | Lower | Slightly higher |
| Minimum staircase width | 63 cm | 70 cm (60 cm with perch model) |
| Suitable for renters? | Yes, removable options | Less practical—permanent installation |
What About a Half-Landing? Two Straight vs One Curved
If your stairs have a half-landing, you have two options:
Option 1: One curved stairlift
- Navigates the entire staircase in one go
- One power source and control system
- More expensive upfront (£5,000–£12,000+)
- Simpler operation—one lift to use
Option 2: Two straight stairlifts
- One lift from ground to landing
- One lift from landing to upper floor
- Cost: £2,500–£5,000 × 2 = £5,000–£10,000
- More complex operation—transfer at the landing, use second lift
- Requires space and mobility to transfer safely
The practical reality: For most people, one curved lift is easier to use. Transferring between two lifts at a landing can be unsafe if you have limited mobility or balance issues. However, if your landing is large and you're confident transferring, two straight lifts might work and could be slightly cheaper.
A home survey will clarify which is best for you.
Can You Convert a Straight Stairlift to a Curved One?
No. You cannot.
A straight rail cannot be retrofitted to curve. The manufacturing process, structural supports, and safety mechanisms are fundamentally different. If you buy a straight lift for stairs that later turn, you'll need to buy a curved lift. There's no upgrade path.
The lesson: Get it right from the start. If you're unsure about your staircase, pay for a proper survey before buying.
Narrow Staircases: Width Requirements
Not all homes have generous stairwell widths. Here are the minimum widths required:
- Straight stairlifts: 63 cm (25 inches) minimum
- Curved stairlifts: 70 cm (27.5 inches) minimum
- For very narrow stairs (60 cm): Perch or standing models (not chairs)
If your staircase is narrower than these requirements, discuss perch models with a surveyor. These are standing lifts that take up less room, but they're not suitable for everyone—particularly those with poor balance or leg strength.
Which Brands Are Best?
The UK market is dominated by a few established names:
For straight stairlifts
- Stannah – Longest established, excellent support
- Acorn – Competitive pricing, reliable
- ThyssenKrupp – German engineering, good build quality
- Handicare – Strong on refurbished models
For curved stairlifts
- Stannah – Best reputation for bespoke curves
- ThyssenKrupp – Excellent for complex staircases
- Brooks – Specialises in curved models
- Handicare – Competitive curved pricing
Avoid unknown brands or suppliers without UK service networks. A stairlift needs servicing—you want an engineer available locally.
Check verified specialists on MobilityVerified to find insurers you can trust.
Getting an Accurate Quote: Why a Home Survey Is Essential
You cannot get an accurate quote without a physical survey of your home. Here's why:
- Staircase width: Affects suitability and model choice
- Wall condition: Is plasterboard or solid brick? This affects installation method
- Electrical supply: Does your home have a suitable socket?
- Headroom: Do you have enough clearance at the top?
- Staircase profile: For curved lifts, the exact angles and bends must be measured
- Existing obstacles: Doors, radiators, or furniture affecting placement
A survey typically takes 30–60 minutes and is often free (some suppliers charge £100–£200). This is money well spent. It's the difference between a perfect fit and a £5,000 mistake.
Most UK suppliers offer free surveys. If you're using our cost calculator, it will ask for measurements—but a physical visit is always more reliable.
Grants and Funding
Both straight and curved stairlifts may qualify for support:
- Disabled Facilities Grant (DFG): Up to £30,000 in England for home adaptations (means-tested)
- Social Services: Some councils fund stairlifts for eligible residents
- Charity support: Charities like Staying Put and Independent Age offer grants in specific regions
You typically need an occupational therapy assessment to qualify. Find out more at our grants page.
