Central Spine Staircase Cost UK – From £7,999
Transparent pricing for bespoke central spine staircases — designed, manufactured and installed across the UK. Solid oak treads, glass balustrade and professional installation included as standard.
What's Included in the £7,999 Price
Our base central spine staircase price includes everything you need for a complete, compliant and beautiful staircase — no hidden extras.
Prime grade 100% solid oak treads, up to 900mm width. Standard straight flight includes up to 13 treads. Supplied sanded and ready for your chosen finish.
Glass produced to BS EN 12150 standard. Supplied on one side of the staircase as standard. Stainless steel point-fix brackets and handrail included.
Prime grade solid oak handrail, laser-levelled and fitted to the glass balustrade. Seamless continuous run from bottom to top of the staircase.
Structural steel central spine beam, powder-coated in any RAL colour. Engineered to support full load requirements and comply with UK Building Regulations Part K.
Full design consultation, site survey and detailed technical drawings. 3D visualisations showing exactly how your staircase will look in your space — before manufacture begins.
Professional installation by our experienced in-house fitters. Typically completed in 2–3 days. All fixings structurally engineered to suit your floor and wall construction.
All prices include design, manufacture and installation. The base price covers a straight flight staircase up to 2700mm floor-to-floor height with a maximum of 13 treads at 900mm width. Additional costs apply for turns, wider treads, double-sided balustrades, LED lighting and platform landings — see the Cost Factors section below.
What Affects the Final Cost?
The base price covers a standard straight flight. Here's exactly how each additional feature affects the total cost of your central spine staircase.
The number of turns in your staircase significantly affects the cost — each turn requires additional structural engineering, more materials and additional installation time. The base price covers a straight flight.
- Straight FlightIncluded
- 1 Turn (L-Shape)+£1,500
- 2 Turns (U-Shape)+£3,000
- 3 Turns+£4,500
The standard tread width in our base package is 900mm. Wider treads require more solid oak timber and additional manufacturing time. Pricing applies per 100mm increment above 900mm.
- 900mm (standard)Included
- 1000mm width+£950
- 1100mm width+£1,900
- 1200mm width+£2,850
The base price includes 12mm toughened glass on one side of the staircase. Upgrading to both sides, thicker glass or a frameless landing balustrade adds to the total cost.
- 12mm one sideIncluded
- 12mm both sides+£350/m
- 17.5mm frameless+£750/m
- Landing balustradeFrom +£350/m
Platforms and landings are priced by square metre. They use a significant amount of material and require precise engineering to integrate with the central spine structure. Priced per m².
- 1m × 1m platform+£1,800
- 2m × 1m platform+£3,600
- Custom sizePOA
We offer fully integrated LED lighting compatible with the Philips HUE system — controllable via app for colour, intensity and motion-sensor activation. A striking feature that transforms the staircase at night.
- Basic LED per treadFrom +£1,500
- Philips HUE integratedPOA
- Motion sensor activationPOA
Professional installation by our in-house team is included as standard in all Continox staircase prices. For complex projects requiring structural alterations, scaffold or specialist access, additional costs may apply.
- Standard installationIncluded
- Complex projectsFrom +£2,000
- Staircase removalPOA
Here's how a typical L-shape central spine staircase with upgrades would be priced:
* All prices excl. VAT. Final price confirmed following free on-site survey and design consultation.
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From bespoke internal staircases to external fire escapes and balcony railings — discover the full Continox range.
Central Spine Staircase Cost FAQ
Everything you need to know about central spine staircase costs, pricing factors and what's included.
A bespoke central spine staircase in the UK starts from £7,999 for a straight flight including solid oak treads, 12mm toughened glass balustrade on one side, oak handrail and professional installation. The final cost depends on the number of turns, tread width and balustrade specification. A typical L-shape with 1000mm treads and glass on both sides would cost approximately £11,500–£13,000.
A central spine staircase (also known as a mono-stringer staircase) uses a single structural steel beam running up the centre, with each tread cantilevering out from both sides. This creates a floating, open appearance with no visible side supports — one of the most architecturally striking staircase designs available. Ideal for open-plan homes and new builds.
Yes — all Continox central spine staircase prices include professional installation by our in-house team. Unlike many suppliers who sell DIY kits, we manage the entire project from design and manufacture through to final installation and sign-off. Installation typically takes 2–3 days on site for a standard straight flight.
The £7,999 base price includes: straight flight up to 2700mm height (max 13 treads), solid European prime-grade oak treads at 900mm width, 12mm toughened glass balustrade on one side (BS EN 12150), solid oak handrail, powder-coated steel spine in any RAL colour, full design service and 3D visuals, and professional installation. Additional costs apply for turns, wider treads, double-sided glass, LED lighting and landings.
An L-shape (1 turn) central spine staircase starts from approximately £9,499 — the base price of £7,999 plus £1,500 for the additional turn. With 1000mm treads and glass on both sides, expect approximately £11,500–£12,500 fully installed. All prices excl. VAT — confirmed after free on-site survey.
From initial enquiry to completed installation, Continox typically delivers within 6–8 weeks. This covers the free design consultation and 3D visuals (Weeks 1–2), manufacturing (Weeks 3–7), and installation (2–3 days on site). Complex designs with multiple turns or landings may take slightly longer.
Yes — Continox provides detailed 3D visualisations of your staircase placed accurately within your space before manufacture begins. You can see materials, tread finish, balustrade style and lighting exactly as they will appear. Included as standard at no extra cost.
Yes. All Continox central spine staircases comply fully with UK Building Regulations Part K — covering tread dimensions, handrail heights, balustrade openings and headroom. The glass balustrade is manufactured to BS EN 12150 and the steel spine is structurally engineered to carry full occupancy loads. All Building Control documentation provided as standard.
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Get a Free QuoteCentral Spine Staircase Cost UK – What You Need to Know
A central spine staircase is one of the most sought-after architectural features in modern UK homes — and understanding the true cost before you start is essential to planning your project correctly. Unlike standard staircases, central spine designs involve significant structural engineering, premium materials and specialist installation, all of which contribute to the final price.
At Continox, we believe in transparent pricing from the outset. Our base central spine staircase price of £7,999 covers everything you need for a complete, Building Regulations-compliant staircase — solid European oak treads, 12mm toughened glass balustrade, oak handrail, powder-coated steel spine and full professional installation. There are no hidden design fees, no supply-only catches, and no surprise charges on the day of installation.
The most common factors that increase the central spine staircase cost are the number of turns in the design, tread width beyond the standard 900mm, and upgrading to a double-sided glass balustrade. Each of these is priced transparently — see our Cost Factors section above for a full breakdown. A realistic budget for a bespoke central spine staircase in a typical UK home is between £9,500 and £15,000 depending on specification.
All prices quoted by Continox are fixed-price following a free on-site survey. We visit your property, take accurate measurements, assess the structural conditions and discuss your design preferences before providing a firm quotation. You will never be asked to commit to a price based on an estimate alone.
Why Central Spine Staircases Cost More Than Standard Designs
The higher cost of a central spine staircase vs a standard staircase reflects the engineering complexity involved. A standard staircase uses two side stringers to support the treads — a relatively simple and material-efficient structure. A central spine design concentrates the entire load of the staircase onto a single steel beam, which must be precisely engineered, welded and fixed to handle the dynamic and static loads generated by everyday use.
The solid oak treads used in a central spine staircase are also significantly thicker and more substantial than those in a standard design — typically 50–80mm solid prime-grade oak — to span the full width without deflection. Combined with the structural glass balustrade and specialist installation requirements, this explains why central spine staircase prices typically start from £7,500–£8,000 for a full-service bespoke installation.
- Structural steel spine — precision-engineered, not a standard section
- 50–80mm solid oak treads — thicker than standard, cantilevered both sides
- 12mm+ toughened glass — BS EN 12150 rated balustrade
- Specialist installation — 2–3 days by trained in-house fitters
- 3D design service — visualise before manufacture, included free
- Building Control docs — Part K compliance, included as standard
Central Spine Staircase Price List
Guide prices for the most common central spine staircase configurations. All prices include design, manufacture and installation — excl. VAT.
| Configuration | Specification | Price from |
|---|---|---|
| Base Designs — Straight Flight | ||
| Straight Flight Most Popular | 900mm treads · glass one side · oak handrail · up to 13 steps | £7,999 |
| Straight Flight – Wide Tread | 1000mm treads · glass one side · oak handrail | £8,949 |
| Straight Flight – Glass Both Sides | 900mm treads · glass both sides · oak handrail | £9,399 |
| L-Shape & U-Shape Designs | ||
| L-Shape (1 Turn) | 900mm treads · glass one side · oak handrail | £9,499 |
| L-Shape – Wide Tread | 1000mm treads · glass one side · oak handrail | £10,449 |
| L-Shape – Glass Both Sides | 900mm treads · glass both sides · oak handrail | £10,899 |
| U-Shape (2 Turns) | 900mm treads · glass one side · oak handrail | £10,999 |
| U-Shape – Glass Both Sides | 900mm treads · glass both sides · oak handrail | £12,399 |
| Popular Upgrades | ||
| LED Lighting | Under-tread LED per straight flight | From +£1,500 |
| Platform Landing (1m²) | Solid oak platform, 1000mm × 1000mm | +£1,800 |
| 17.5mm Frameless Glass | Upgrade from 12mm — per linear metre | +£750/m |
| Fully Bespoke Design | Any layout, any material, any finish | POA |
All prices excl. VAT · Include design, manufacture & installation · Fixed price confirmed after free on-site survey · Prices correct as of 2026