UK price guide · Updated 26 Sep 2026
Bifold Door Installation Cost
Aluminium bifold doors are one of the highest-value products in the calculator. Current fitted centres are roughly £3,279 for a 3-panel system, £4,264 for 4 panels and £5,423 for a larger 5-panel example.
Current price examples
These examples come from the same pricing model used by the calculator. They are market estimates rather than binding installer quotations.
Width and panel count both matter
A wider bifold needs more aluminium profile and glass, while additional panels add more hinges, rollers, locks and fabrication. Those effects are modelled separately rather than pricing purely by width.
The examples assume an existing suitable opening. Structural alterations can add significantly to the job.
Check your quote for
- Total opening width
- Number of panels
- Standard or triple glazing
- Structural work, thresholds and making good
What “fitted” means here: supply, standard replacement installation and ordinary 20% VAT are included. Unusual access, scaffolding, structural repairs, planning/listed-building requirements and highly bespoke work can sit outside the standard estimate.
Related price guides
Compare closely related products before using the calculator for your exact specification.
Questions people ask
Short answers to the most useful questions around this price topic.
How much are 3-panel bifold doors fitted?
The current model centres around £3,279 for a 2100mm three-panel aluminium system.
Do more panels always cost more?
Generally yes, because each additional panel adds frame, glass and hardware as well as fabrication complexity.
Is structural work included?
Not in the examples above. The calculator can add an allowance when a new or enlarged opening is required.
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