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Bifold Door Cost.

Aluminum bifold door cost runs $4,500 to $25,000-plus per opening at retail, depending on panel count, opening width, glass spec, and frame quality. The largest cost driver after opening size is panel count: each additional panel adds hinges, locking gear, frame profile, and a glass cut, all of which scale faster than linear. Factory-direct shifts the math by removing showroom and dealer markups.

Updated May 31, 2026

What drives the price.

Opening width sets the baseline. A 10-foot 3-panel bifold at retail runs $4,500 to $7,500. A 16-foot 4-panel runs $7,500 to $14,000. A 24-foot 6-panel runs $15,000 to $25,000-plus. Premium thermally-broken aluminum sits at the upper end of each range; budget aluminum or fiberglass-clad at the lower.

Panel count compounds with width. A 16-foot opening with 4 narrower panels costs more than the same 16 feet split into 3 wider panels because of the extra hardware and frame work. Wider panels are limited by structural span; over 1.2m wide per panel needs heavier hardware.

Glass package: triple-pane LowE argon adds $1,200 to $2,500 per opening over basic double-pane. Acoustic-rated laminated adds $500 to $1,000 per opening.

Factory-direct math.

Retail premium aluminum bifold runs $1,000 to $1,500 per linear foot installed. Factory-direct on the same spec lands $600 to $1,000 per linear foot. The gap is the showroom and dealer markup, not the product.

The trade-off: factory-direct means you measure, specify, and arrange your own install. For a renovation with a contractor on the job this is straightforward. The cost saving funds either a better spec at the same budget or a real budget cut on the same spec.

Common questions.

How much does a 12-foot bifold door cost?
A 12-foot 3-panel aluminum bifold runs $5,500 to $10,000 at retail, $4,000 to $7,000 factory-direct, on a premium thermally-broken spec with double-pane LowE glass. Triple-pane and acoustic upgrades add to the top end.
Are bifold doors more expensive than sliding?
Yes. At the same opening width and spec, bifold runs 30 to 60 percent higher than a comparable sliding door because of the extra panels, hardware, and frame work. The trade-off is the bifold opens nearly the full wall; the slider opens half.
What is the cheapest bifold option?
Fiberglass or composite-frame bifold runs lower than aluminum at the entry tier. Trade-off: thicker sightline, less premium finish, shorter design life. For long-term build, aluminum factory-direct is competitive on price with retail fiberglass at a stronger spec.

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