Knock-through walls in Harborne

Before your knock-through in Harborne

Work inside your Harborne home isn't development, so planning permission doesn't apply — the exception is a listed building, where Birmingham City Council would need to give listed building consent. Structural work, new electrics and drainage changes come under Building Regulations.

Internal alterations to a listed building need listed building consent from Birmingham City Council.
Steel beams usually take one to two weeks to make once the calculations are approved.
Textured ceilings applied before 2000 should be tested for asbestos before they're cut or disturbed.

Postcode district: B17
Planning and building control: Birmingham City Council
From our West Bromwich base: 4 miles

Which options suit homes in Harborne?

Non-load-bearing partition removal

Stud or thin block partitions that carry no weight can be removed without steel, once we've confirmed what's above. The work is mostly making good: patching the ceiling and walls, filling the floor where the wall stood, and moving any sockets or switches. It's the quickest and cheapest kind of knock-through.

Load-bearing wall with a steel beam

Where the wall supports floors, other walls or the roof, a structural engineer sizes a steel beam and the padstones that carry its ends. Temporary props hold everything up while the wall is removed and the beam goes in. The steel is then boxed in with plasterboard, usually fire-rated, and skimmed so it looks like part of the ceiling.

Knock-through walls prices in Harborne

Expect to budget between £1,200 and £14,000 depending on size and specification in Harborne. Opening up a 3.5 m load-bearing wall between kitchen and dining room in a semi: typically £4,500–£6,800.

Guide prices for knock-through walls
Option	Guide price	Good to know
Non-load-bearing wall removed	£1,200 – £2,800	No steel, mostly making good
Load-bearing wall with steel beam (up to about 4 m)	£3,800 – £7,500	The usual kitchen-diner or through-lounge
Wide span, chimney breast or multiple steels	£7,500 – £14,000	Bigger steels, more propping and making good

Guide ranges include VAT where it applies. We confirm a fixed price for the agreed specification after visiting.

Before you book in Harborne

How do I know if a wall is load-bearing?

You can't be sure by looking, so we check on site. Clues include floor joists running across the wall rather than alongside it, a wall directly above on the next floor, or solid brick rather than hollow stud. Even a wall that seems light can carry a load in older houses. A structural engineer confirms it, and the calculations form part of the Building Regulations approval.

Do you cover Harborne?

Yes. Harborne (B17) is about 4 miles from our West Bromwich base and inside the area we cover. Call 0800 088 6248 or send the form on this page to book a free survey.

Will I get a certificate for the steel beam?

Yes. When building control is satisfied, it issues a completion certificate for the work, and you should keep that with the structural engineer's calculations. A buyer's solicitor will ask for both when you sell, as unapproved wall removals are a common problem in house sales. Steel and other products carry their manufacturers' terms, which are set out in your quote.

Will I need permission from the council in Harborne?

Not for planning — internal work isn't development unless the house is listed. Building Regulations approval is needed for structural work such as removing a load-bearing wall, through Birmingham City Council or a registered building control approver.

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Planning a new kitchen too? Tell us both jobs and we'll quote them together, so the steel and the layout fit.