Back Doors Advice
Back Door Prices UK: How Much Does a Back Door Cost in 2026?
Back door prices in the UK on average range from around £600 to £2,200 supplied and fitted for standard uPVC and composite options, with premium materials and larger configurations costing more.
Your final price depends on the material, size, glazing and installation requirements. At Green Doors, we offer new and pre-owned stock, providing cheap back doors as an alternative to more costly made-to-measure doors for homeowners working with different budgets.
Back Door Prices in 2026: At a Glance
| Back door type | Typical 2026 UK price | Pricing basis |
| Standard uPVC back door | £600 to £1,400 | Supplied and fitted |
| Composite back door | £900 to £2,00 | Supplied and fitted |
| Timber external door | £550 to £2,600 | Typical installed range |
| Aluminium back door | £1,400 to £3,500+ | Supplied and fitted |
| uPVC French/patio doors | £1,200 to £3000 | Supplied and fitted |
| Steel external doors | Individual quote | Dependant on specification |
| Sliding patio doors | £1,500 to £5,000 | Supplied and fitted |
| Pre-owned back door | Varies by current stock | Supply price depends on size, material and condition |
The table above provides an overview of typical UK back door prices in 2026. Most prices include supply and installation, although we have also highlighted supply-only costs where available. Remember that quotations can vary significantly depending on the door’s specification and the work involved.
Green Doors’ own prices depend on current stock, so check individual product listings when comparing new and pre-owned options.
What Affects the Cost of a Back Door?
The purchase price is only part of your overall budget. Material, dimensions, glazing, security features and installation requirements can all affect the final cost of replacing your back door.
Door Material and Construction
A standard uPVC back door cost is generally lower than a composite back door cost. Timber, aluminium and steel prices vary according to construction, finishes and product specifications.
Size, Style and Configuration
Standard single back doors are usually more affordable than oversized or bespoke designs. French doors, sliding systems and additional side panels introduce different materials, components and fitting requirements.
Glazing, Colour and Hardware
Decorative glazing, coloured finishes, upgraded handles and security locks can increase your back door’s price. For more information on security options, feel free to explore the back door security guide compiled by our experts for further advice on protecting your entrance.
Fitting and the Condition of the Existing Opening
Installation costs depend on labour, frame condition and necessary adjustments. Damaged surrounds, resizing and structural alterations may increase expenses. Explore our guide to back door fitting to understand what professional installation can involve.
How Much Does It Cost to Replace a Back Door?
Your total back door replacement cost depends on whether you’re replacing your back door with a similar model or making changes to the opening. A more straightforward swap-over will generally cost significantly less than an installation that requires extensive frame repairs, reworks or structural alterations.
When comparing back door price options, you should distinguish between supply-only, labour-only and fully fitted quotes. Installation may also involve removing the existing door, replacing frames, sealing and making good surrounding surfaces.
What Is the Cheapest Back Door Option?
Typically, it is a standard uPVC door, which is generally among the most affordable options when buying new. However, purchasing a suitable pre-owned door can reduce your back door replacement costs, particularly when you find one that already matches your opening.
When shopping for cheap back doors, remember that the lowest purchase price doesn’t necessarily represent the best value, as if the door doesn’t fit, it will be a waste of money. A properly fitted door with suitable security and insulation is worth prioritising over a cheaper but unsuitable alternative.
To protect against this, be sure to consider as many aspects of the door as possible. Dimensions, glazing, locks, condition and potential fitting costs are all critical pieces of information to know before making your decision.
New vs Pre-Owned Back Doors: What Changes the Price?
The greatest benefit of a brand-new door is that it can be manufactured to your measurements and preferred specifications, but made-to-measure designs often come with higher purchase prices.
Pre-owned doors offer a more affordable alternative when suitable stock is available. However, it’s important to check the size, material, glazing, frame, locks and included hardware.
At Green Doors, we rescue usable back doors that might otherwise end up in landfill, keeping them in use for longer and helping to reduce waste. Browse our back doors with prices for any budget.
How to Compare Back Door Quotes
When comparing back door prices, make sure each quotation covers the same products and services. A cheap back door quote may exclude important work that another installer will include. Some key pointers to watch out for include:
- Door specification: Material, dimensions, finish and glazing
- Security: Locks, handles and other hardware
- Installation: Labour, fitting and sealing
- Frame work: Repairs, replacement and adjustments
- Removal: Taking away and disposing of the existing door
- Finishing: Making good surrounding walls and surfaces
- Additional costs: Delivery, structural work and any other charges
Find Affordable Back Doors at Green Doors
Looking for an affordable replacement back door? Here at Green Doors, we offer a wide range of both new and pre-owned cheap back doors in various sizes, materials, colours and conditions. Opting for a reclaimed door can help reduce waste while saving money compared with buying new.
Browse our current stock today and find the right fit for your home, or contact our team for help exploring suitable options and back door prices.
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H2: Frequently Asked Questions
How much is a new back door in the UK in 2026?
A standard uPVC back door typically costs around £600–£1,400 supplied and fitted, while composite options can cost £900–£2,000. The final price depends on the door’s dimensions, glazing, hardware and installation requirements.
How much does it cost to replace a back door?
Replacement costs depend on the door material and work required. A straightforward like-for-like installation generally costs less than one involving frame replacement, structural alterations or extensive repairs to surrounding walls.
What is the cheapest type of back door?
Standard uPVC doors are generally among the cheapest new options when it comes to back door prices. However, suitable second-hand doors can offer further savings on the purchase price, provided their dimensions, condition and security features meet your needs.
Is it cheaper to buy a back door and pay for fitting separately?
Potentially, even more so when purchasing a cheap back door that is pre-owned. However, you’ll need to compare the combined purchase and installation costs with fully fitted quotations to establish which offers better value.
Are second-hand back doors cheaper than new doors?
Pre-owned back door prices can be considerably cheaper than equivalent new products. Prices depend on their material, size and condition, while installation costs must also be considered before calculating your overall savings.
Does a back door price include installation?
Not always. Some retailers advertise supply-only prices, while installers may provide fully fitted quotations. Check whether the price includes labour, frames, hardware, removal of the existing door and any necessary finishing work.