How Much Do Steel Internal Doors Cost? What Homeowners Need to Know
Bespoke steel internal doors in the UK start from £950 for a fixed room divider and from £1,200 for a single hinged door, with prices varying by configuration. Fire-rated doors and screens start from £1,950. These prices are for the items only and exclude VAT — survey and installation are available as additional services. The variation between projects is driven by a small number of specific factors — understanding them is the key to knowing what your project is likely to cost and where your budget is best spent.
Cost is usually one of the first questions homeowners ask when researching steel internal doors, and it deserves a straight answer. Bespoke steel doors are a premium product and are priced as such — but the range of what a project can cost is wide, and where yours sits within that range depends on factors that are worth understanding before you begin.
This guide sets out what drives the cost of bespoke steel internal doors, what the price difference between cheaper alternatives reflects, and how to approach your budget in a way that gets the best possible result.
What Bespoke Steel Doors Cost
Every door Joshua James produces is made to order, and the starting price depends on the configuration. The figures below are supply-only prices excluding VAT — survey and installation services are available and priced separately depending on the scope of the project.
Bespoke single steel-framed door: from £1,200
Bespoke double steel-framed door: from £1,800
Single door and screen combination: from £1,800
Double door and screen combination: from £2,200
Single arched door: from £1,800
Double arched door: from £2,450
Internal steel room divider: from £950
Single sliding steel door: from £1,350
Double sliding steel door: from £2,450
Pocket sliding steel door: from £1,350
Single bi-folding door (two leaves): from £2,150
Double bi-folding door (four leaves): from £3,950
Steel-framed fixed screen: from £1,950
Fire-rated steel door or screen: from £1,950
Bespoke glazed solutions: priced per project
These are starting points rather than fixed prices. Every door is made to the exact dimensions of your opening and specified to your requirements — the final cost of any project depends on the size of the opening, the finish, the glass type, the ironmongery and the complexity of the installation. Two projects with the same configuration can sit at different price points depending on those variables.
The clearest way to understand what your project is likely to cost is to begin a conversation with our team. We will talk through the specifics of your home, your brief and your budget, and give you an accurate picture of what is involved.
What Drives the Cost
A handful of factors account for most of the variation in cost between projects.
Opening size. The size of the opening is one of the most direct determinants of cost. Larger doors require more steel, more glass, more finishing time and more complex installation. A standard single door in a modest residential opening will sit at a different price point to a grand double door set spanning a wide hallway aperture. For homeowners working to a defined budget, the size of the opening is one of the most effective levers available — some clients have chosen to adjust the size of their opening to bring the project within their budget without compromising the quality of the door itself.
Fire rating. Fire-rated doors are more expensive than their non-fire-rated equivalents, and the difference is meaningful. The testing, certification and construction requirements of a fire-rated system add cost at every stage — from the materials used to the installation process. Our InoCross20FR system, which delivers E30 fire resistance, and our InoCross50FR system, which covers a range of ratings up to EI120, are both specified at a higher price point than our non fire rated systems. Where fire rating is required — as it often is in open-plan homes following building control guidance — this cost is a given rather than a choice. Where it is not required, choosing a non-fire-rated system is the simplest way to manage cost without affecting the quality of the result.
Configuration. A single hinged door costs less than a double door set. A double door set costs less than a sliding door set with fixed side screens. Bi-folding doors, with their additional panels and more complex running gear, sit higher again. The configuration is determined largely by the brief and the opening, but where there is flexibility, it is worth understanding how different configurations compare in cost.
System choice. Our four main systems — InoCross20, InoCrossSCULPTURE, InoCross20FR and InoCross50FR — are priced differently, reflecting the different materials, construction methods and performance specifications involved. The InoCross20 is our signature system and the natural starting point for most projects. InoCrossSCULPTURE, with its ultra-slim profile and maximum glazed area, reflects a higher level of refinement in the manufacturing process. Both fire-rated systems carry the additional cost of certification and specialist construction.
Number of doors. Projects involving multiple door sets across a ground floor or whole home will cost more in total but may offer efficiencies in survey and installation that a single door set does not. For homeowners who are planning to install steel doors throughout their home, doing so as part of a single project rather than in stages is usually the more cost-effective approach.
Supply only versus survey and installation. Our doors are available on a supply-only basis for clients who are managing their own installation, or with our full survey, supply and installation service. The latter adds cost but also adds the assurance of a professionally managed process from measurement through to completion. Our Order Process page sets out what each service includes.
What the Price Difference Reflects
Homeowners researching steel internal doors will encounter a range of products at different price points — from mass-produced alternatives in other materials to bespoke steel doors from specialist manufacturers. Understanding what the price difference between them reflects is important context for making a confident decision.
Cheaper alternatives — products that mimic the aesthetic of steel framed glazing in aluminium or other materials — are produced to standard sizes and finishes, assembled from components rather than crafted from steel, and finished to a specification that is designed to be commercially efficient rather than architecturally resolved. They can look similar in photographs. In person, and over time, the difference is clear.
A bespoke steel door from Joshua James is handcrafted from cold-rolled steel, fully welded where the system calls for it, made to the exact dimensions of your opening, and finished to a standard that reflects the quality of the product and the care of the process. The steel is heavier, the frame is stronger, the sightlines are slimmer, and the result is a product that will look and perform as intended for decades without the degradation that cheaper alternatives can show over time.
The price difference is not a margin of profit on a commodity product. It is the difference between something made and something manufactured — and it is a distinction that is felt every time you use the door.
Making the Most of Your Budget
For homeowners working to a defined budget, a few approaches consistently produce the best result.
Be clear about what matters most. The finish, the glass type and the ironmongery all contribute to the cost of a project, but they contribute to the experience of the door every day in equal measure. Where budget is a consideration, it is worth being clear about which details matter most to you and allocating accordingly, rather than spreading the budget thinly across everything.
Consider the opening size. As noted above, the size of the opening is one of the most direct cost drivers. Some clients choose to adjust their opening — working with their builder to bring it to a size that allows the door to be produced within budget without compromising the quality of the product itself. It is a practical and sensible approach, and one our team can advise on during the design process.
Start with supply only if installation is being managed separately. For clients who have a trusted contractor managing the installation, our supply-only service allows the cost of the door itself to be separated from the installation. This can give more flexibility in how the overall project budget is structured.
Plan the full project at once. For homeowners who want steel doors throughout their home, planning and ordering the full project together — rather than adding doors in stages — is usually more efficient in terms of survey and installation costs, and ensures a cohesive result across the whole interior.
Getting an Accurate Quote
The most useful thing you can do at this stage is begin a conversation. Every project at Joshua James is different, and the only way to get an accurate sense of what yours will cost is to discuss the specifics — the opening sizes, the configuration you have in mind, the system, the finish and the level of service you need.
Our team will talk through all of this with you, without obligation, and give you a clear picture of what is involved and what it is likely to cost. Get in touch to begin, or visit our showroom to see our doors in person before you do.
Frequently Asked Questions
How much do bespoke steel internal doors cost in the UK? Bespoke steel internal doors at Joshua James start from £950 for a fixed room divider and from £1,200 for a single hinged door. Double doors start from £1,800, sliding doors from £1,350, bi-folding doors from £2,150, and fire-rated doors and screens from £1,950. These prices are for the items only and exclude VAT. Survey and installation are available as additional services. The final cost of any project depends on the size of the opening, the configuration, the finish, the glass type and the ironmongery specified.
What makes steel internal doors more expensive than alternatives? Bespoke steel doors are handcrafted from cold-rolled steel, made to the exact dimensions of your opening, and finished to a standard that reflects the quality of the material and the care of the process. Cheaper alternatives in other materials are produced to standard sizes and assembled from components rather than crafted. The price difference reflects the difference between a bespoke, permanent architectural feature and a commercially produced substitute.
Does fire rating significantly affect the cost? Yes. Fire-rated systems carry additional cost due to the testing, certification and specialist construction they require. Where fire rating is required — as is often the case in open-plan homes — this cost is a fixed part of the project. Where it is not required, choosing a non-fire-rated system is the most straightforward way to manage cost without affecting the quality of the result.
Can I reduce the cost by adjusting the size of the opening? Yes. Opening size is one of the most direct cost drivers, and some clients choose to work with their builder to adjust the opening to a size that brings the project within budget. Our team can advise on what size adjustments are possible and how they affect the proportions and design of the door.
Is supply only cheaper than survey and installation? Supply only removes the cost of our survey and installation service, which can give more flexibility in how the overall project budget is structured. It is suitable for clients who have a trusted contractor managing the installation. Our Order Process page sets out what each service includes and what to expect at each stage.
Is it more cost effective to order multiple doors at once? Generally yes. Planning and ordering the full project together — rather than adding doors in stages — is usually more efficient in terms of survey and installation costs, and ensures a cohesive result across the whole interior. For homeowners who want steel doors throughout their home, a single project is almost always the better approach.
Let’s Talk
Whether you're renovating a home, specifying for a new build, or delivering a luxury interior for a client — we’re here to help.
At Joshua James, we work with architects, interior designers, homeowners and contractors across the UK to design and supply bespoke steel internal doors. Every door is crafted to exacting standards, tailored to suit each project’s vision, and built to stand the test of time.
If you're ready to elevate your next project with precision-made steel framed doors, let’s talk.
