Bi-fold and patio doors in Castle Vale

Bi-fold and patio doors in Castle Vale: approvals and local details

This kind of work rarely needs planning permission, but it does have to comply with Building Regulations, and some parts must be certified by a registered installer or signed off by building control. In Castle Vale, building control is provided by Birmingham City Council or a registered building control approver (formerly an approved inspector).

Bi-fold and patio doors must meet a U-value of 1.4 W/m²K or an equivalent energy rating.
A flush threshold needs the outside ground set lower, with drainage in front of the door.
With a traffic door on a bi-fold set, you don't have to open every panel to step outside.

Postcode district: B35
Planning and building control: Birmingham City Council
From our West Bromwich base: 9 miles

Options to consider in Castle Vale

Widening an opening

Turning a window into doors, or making an opening wider, means cutting the wall and fitting a new lintel or steel beam sized by a structural engineer. Building control must approve the structural work. We organise the calculations, temporary supports, steel and making good, and show these costs on their own lines in your quote.

Sliding patio doors

Two or more large panels slide past each other on a track, so nothing swings into the room or onto the patio. Sliders give the biggest uninterrupted panes and the narrowest frames, which makes them a good choice where the view matters more than opening the whole wall. Aluminium sliders also suit wide openings.

Guide prices for Castle Vale

Prices in Castle Vale match the rest of our area: £1,200–£8,500 per doorset. Three-panel aluminium bi-fold, about 2.4 m wide, in an existing opening: usually £3,200–£4,800 per doorset.

Guide prices for bi-fold and patio doors
Option	Guide price	Good to know
uPVC French or sliding doors	£1,200 – £2,400 per doorset	Openings up to about 1.8 m
Three-panel aluminium bi-fold	£3,000 – £5,000 per doorset	Openings of about 2.4–3 m
Four- or five-panel aluminium bi-fold	£4,800 – £8,500 per doorset	Openings of about 3.6–4.8 m

Guide ranges include VAT where it applies. Your fixed price for the agreed specification follows a free survey at your Castle Vale address.

Your questions answered

How much do bi-fold doors cost?

A three-panel aluminium bi-fold for an opening of around 2.4 m typically costs £3,000–£5,000 fitted in the West Midlands, and wider four- or five-panel sets run to around £8,500. uPVC versions cost less. If the opening needs widening, add the cost of a steel beam, calculations and building control, which we price separately in your quote.

How do I book a survey in Castle Vale?

Send the form on this page, use the guide-price tool or call 0800 088 6248 free. We'll ask a few questions about your bi-fold or patio doors and arrange a time to visit.

What should I check before ordering?

Think about the floor level inside and out: a flush threshold needs the patio set lower, with drainage at the door. Decide which side the panels should stack and where the everyday traffic door goes, keeping furniture in mind. If the doors face south or west, ask about solar control glass to keep the room cooler.

Does Birmingham City Council need to approve my bi-fold or patio doors?

You won't usually need planning permission, but the work must meet Building Regulations. Building control in Castle Vale is provided by Birmingham City Council or a registered building control approver, and some work is self-certified by registered installers.

Bi-fold and patio doors near Castle Vale

Other work we do in Castle Vale

Get the opening measured and the lintel checked: book a free survey in Castle Vale and we'll put it all in a written quote.