Bespoke External Staircases UK – Designed & Installed
Steel external staircases engineered to BS 9991 standards and built for longevity. From residential garden access to commercial fire escapes — designed, manufactured and installed across the UK by Continox.
From Enquiry to Installation
Discover how Continox designs and installs bespoke external staircases that combine aesthetic beauty with structural excellence and full Building Regulations compliance
Free Design Consultation
Initial Discovery & Professional Guidance
Your external staircase journey begins with a detailed consultation with our expert design team. We'll discuss your vision, understand your specific requirements, and assess your site conditions. Based on your drawings, sketches, photographs, or previous commissions, we'll provide a professional guide price and explore all available design options. Our specialists take time to understand your aesthetic preferences and functional needs before proceeding to the next stage.
Concept Design
3D Visualisation & Concept Package
Once your initial requirements are confirmed, our design team creates detailed 3D visualisations so you can see exactly how your external staircase will look in your space. We conduct a comprehensive site survey to measure existing conditions and identify any potential challenges. Our concept package includes sketched designs, written technical specifications, material recommendations, and a detailed budget estimate. This stage ensures complete alignment before we move to detailed design and manufacturing drawings.
Design & Specifications
Detailed CAD Drawings & Firm Quotation
Once you approve the concept design, we model your external staircase precisely within your space and prepare detailed specifications meeting British Building Regulations BS 9991. You'll receive a firm cost quotation, complete CAD drawings for manufacturing, outline drawings for Building Control approval, and a comprehensive scope of works document. All specifications include material grades, dimensions, safety compliance details, and installation methodology. This documentation ensures absolute clarity and protects both parties before manufacturing begins.
Expert Manufacture
Premium Materials & Precision Fabrication
Upon final approval, our engineering department releases detailed manufacturing drawings and places material orders for premium-grade steel, glass, and timber. Every component is fabricated to exact specifications in our modern facility, with rigorous quality checks at each stage. We typically deliver bespoke external staircases within 35 days of design approval. Each staircase is individually numbered and tracked through production, ensuring complete traceability and accountability. Our manufacturing process combines traditional craftsmanship with modern precision engineering.
Professional Installation
Expert Fitting & Comprehensive Aftercare
Our experienced installation team arrives at your site with all necessary equipment and expertise to fit your external staircase with precision. Installation is coordinated with Building Control inspectors to ensure full compliance with British Building Regulations and all structural safety requirements. Once installation is complete, we provide comprehensive aftercare support including maintenance guidance, warranty information, and our commitment to ongoing assistance. Your new external staircase becomes a stunning, functional centerpiece of your property for decades to come.
Ready to Begin Your Project?
Start your external staircase journey today with a free, no-obligation design consultation. Our expert team at Continox is ready to transform your vision into a stunning, safe, and compliant external staircase.
Get Free QuoteExternal Staircase Portfolio
Explore our collection of bespoke external staircases, each custom-designed and professionally installed to transform outdoor spaces with beauty and functionality
Inspired by Our Portfolio?
Your external staircase vision awaits. Contact our expert team today for a free design consultation and discover how we can transform your outdoor space with a bespoke staircase solution.
Get Free QuoteExternal Staircase Building Regulations UK
Every Continox external staircase is designed and installed in full compliance with UK Building Regulations and British Standards — protecting you, your property, and your project.
What the regulations mean for your project
All external staircases in the UK must comply with Building Regulations Part K, which governs protection from falling, collision and impact. For fire escape staircases serving commercial or multi-occupancy properties, BS 9991 sets additional requirements around means of escape and structural performance.
External staircases that form the main or alternative access to a building must also meet Part M (access and use), ensuring adequate width, handrail heights, and non-slip surfaces for all users including those with mobility requirements.
At Continox, our engineering team manages all compliance documentation as standard — including CAD drawings for Building Control, material specifications to BS EN 1090, and a full scope of works document. You never need to worry about whether your staircase meets the rules — we handle it entirely.
Our steel external staircases carry UKCA marking and a Declaration of Performance as required by Building Control — something many suppliers cannot provide.
- Rise 150–220mm per step (private); 150–190mm (common/public)
- Going 280–300mm for external tapered steps; min 220mm straight flight
- Pitch Maximum 42° for external staircases with tapered steps
- Handrail Height 900mm–1000mm above pitch line; required on both sides if width exceeds 1000mm
- Balustrade Min 1100mm high at landings; openings must prevent passage of a 100mm sphere
- Headroom Minimum 2000mm clear headroom measured vertically above pitch line
- Tread Surface Non-slip finish required — perforated steel, grating, or anti-slip treatment
- Fire Escape Must comply with BS 9991 and Approved Document B — min 1000mm clear width
External Staircase FAQ
Everything you need to know about bespoke external staircases — costs, regulations, materials and timelines.
Bespoke external staircases in the UK typically start from £3,500 for a simple straight steel flight and rise to £15,000+ for complex multi-landing or architectural designs. The final cost depends on the number of steps, width, material finish (galvanised, powder-coated, or stainless steel), balustrade type, and site-specific installation requirements. At Continox, we provide a free guide price within 24 hours of your initial enquiry.
In most cases, external staircases on residential properties fall under Permitted Development and do not require planning permission, provided they do not project beyond the principal elevation of the house. However, if the staircase is on a listed building, in a conservation area, or serves a commercial property, planning permission may be required. Building Regulations approval (separate from planning) is almost always required. Our team advises on all compliance requirements as part of your free consultation.
Mild steel with hot-dip galvanising is the most popular choice for UK external staircases — durable, weather-resistant, and cost-effective. Powder-coated steel offers a cleaner aesthetic in any RAL colour. Stainless steel (grade 316) is ideal for coastal locations or premium finishes. Timber treads on steel frames are popular for residential garden stairs. We advise on the best material combination for your environment, budget and design preference during your free consultation.
From initial enquiry to completed installation, Continox typically delivers bespoke external staircases within 6–10 weeks. This includes the free design consultation (Week 1), detailed CAD drawings and quotation (Week 2), manufacturing (Weeks 3–7), and installation (1–3 days on site depending on complexity). Fire escape or commercial projects requiring Building Control approval may have a longer timeline — we'll give you a precise schedule at the design stage.
Yes — virtually all external staircases require Building Regulations approval under Part K (protection from falling) and, where applicable, Part B (fire safety) and Part M (accessibility). Fire escape staircases serving commercial or multi-occupancy properties must also comply with BS 9991. Continox handles all Building Control documentation as standard, including CAD drawings, structural specifications, and material certifications to BS EN 1090.
Yes. The majority of our projects involve retrofitting to existing buildings — whether that's a residential property needing garden or loft access, a commercial building requiring a fire escape, or a warehouse needing a mezzanine stair. We conduct a full site survey to assess the existing structure, fixings, and ground conditions before designing your staircase. All connections are engineered to suit the host building's material and load requirements.
For private residential use, there is no minimum width specified in Building Regulations, though 800mm is considered the practical minimum for comfortable use. For external staircases used as fire escapes or serving common areas, a minimum clear width of 1000mm is required under BS 9991 and Approved Document B. We design to the width that suits your space and usage requirements.
Yes, when specified correctly. All Continox external staircases use materials chosen for the UK climate: hot-dip galvanised or powder-coated mild steel, marine-grade stainless steel for coastal locations, and pressure-treated hardwood or composite for timber elements. Tread surfaces feature anti-slip finishes as standard, and all steel is finished to BS EN ISO 12944 corrosion protection standards.
Can't find the answer you're looking for? Our team typically responds within 2 hours.
Ask Us DirectlyBespoke External Staircases & Balustrades
From residential garden access to commercial fire escapes — every Continox external staircase is designed, manufactured and installed to exact specification.
Straight Flight Staircase
From £3,500
Fire Escape Staircase
Bespoke Pricing
Garden Access Staircase
From £3,500
Mezzanine & Industrial
Bespoke Pricing
Platform & Balcony Access
From £4,500
Spiral External Staircase
From £5,500
Residential External Staircases
Whether you need rear access to a raised garden, a staircase from a first-floor balcony, or a feature external stair for a self-build or extension — Continox designs and installs bespoke residential external staircases across the UK. Every project starts with a free design consultation and guide price within 24 hours.
Commercial & Fire Escape Staircases
From HMO fire escapes to multi-storey commercial access stairs, Continox delivers fully compliant external staircases for commercial properties across the UK. We manage all Building Control documentation, BS 9991 compliance, and UKCA-marked steelwork as standard — so your project stays on time and on budget.
External Staircase Installation Across the UK
Where We Work
Continox designs, manufactures and installs bespoke external staircases across the South of England and beyond. Based in Hampshire, our team regularly works on residential and commercial projects throughout London, Surrey, Berkshire, Dorset, Sussex, Kent, Wiltshire, Somerset and Essex.
Whether you're a homeowner in Surrey needing a garden access staircase, a developer in London requiring a compliant fire escape, or an architect in West Sussex specifying for a new-build project — we provide the same high standard of service wherever your project is located.
All projects include a free on-site survey, full design service, Building Control documentation, and professional installation by our in-house team. We don't use subcontractors.
Not in our listed areas? We regularly travel further afield for the right project. Get in touch and we'll let you know if we can help.