If you’re planning a bi-fold door installation and trying to work out a realistic budget, you’ve probably found wildly different numbers online. That’s because bi-fold door prices depend on a genuine range of factors — material, size, panel count, glazing spec, and whether any structural work is needed. Here’s a clear breakdown of what to expect in 2026.
Average Bi-Fold Door Costs by Material
Material is the single biggest factor in your final price:
- uPVC: The most budget-friendly option, typically £1,950–£2,800 installed for a standard 3-panel set.
- Aluminium: The most popular choice for modern homes, generally running £3,000–£7,500 installed depending on size and specification. Aluminium bi-fold doors‘ slim sightlines (as narrow as 20mm on premium systems) let in significantly more light than uPVC or timber frames of the same size.
- Timber: A premium option for period properties and conservation areas, typically £2,000–£6,700 installed — competitive with aluminium but requiring more ongoing maintenance.
What Affects the Price?
Size and panel count
Most UK rear-garden installations use 3–5 panels, covering openings from around 2.4m to 5m. Each additional panel adds to both material and labour cost. A full-width 5m opening with structural work can run £12,000–£18,000 in more complex projects.
Glazing specification
Double glazing is standard. Triple glazing typically adds around 30% to the cost but improves thermal performance — worth considering if the doors face a particularly exposed or north-facing aspect.
Structural work
If you’re widening an existing opening or installing a new lintel, budget for this separately from the doors themselves. This is often the part homeowners underestimate: a straightforward £3,000 door budget can become a £9,000 project once steelwork and finishing are included.
Installation
Labour for a standard domestic fitting typically runs £600–£1,500, and most installations take 1–2 days for a two-person team. If structural alterations are required, allow extra time for that work to be completed and cured before the doors go in.
A Realistic Budget Range
For most UK homes, a 3–4 panel aluminium bi-fold door system covering a 3-metre opening lands between roughly £3,000 and £5,500 supply and fitted. That’s a reasonable starting point for budgeting — but the only way to get an accurate figure for your specific project is a proper site survey, since opening size, wall type, and access all affect the final quote.
Get an Accurate Quote
Every home and opening is different, which is why we offer free, no-obligation site surveys across Oxfordshire, Buckinghamshire and the surrounding counties. We’ll give you an accurate quote based on your actual opening, not a generic estimate. Get in touch or visit our Bicester showroom to see Origin bi-fold doors in person.
Note: the price ranges above reflect general UK market data for 2026 and are provided as a planning guide. They are not a quote from Multifold Doors — get in touch for pricing specific to your project.