Knock-through walls in Northfield

Knock-through walls in Northfield: approvals and local details

Work inside your Northfield 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.
Keep the completion certificate and engineer's calculations safe, as a buyer's solicitor will ask for them.
Keeping a short section of wall at each end can mean a smaller steel and a lower cost.

Postcode district: B31
Planning and building control: Birmingham City Council
From our West Bromwich base: 7 miles

Which options suit homes in Northfield?

Through-lounge

Joining the front and back reception rooms gives one long room with light from both ends. The wall between them is often load-bearing, and on some houses a chimney breast sits nearby, which needs its own support if it's removed. A partial opening with nibs left either side can be a good compromise on cost and structure.

Wide opening instead of full removal

Keeping short sections of wall at each end, or a bulkhead above, lets you open two rooms up while keeping some separation and somewhere to put furniture. It can mean a shorter, lighter steel, and it sometimes gives a better result where the two floors are at slightly different levels or the ceilings don't line up.

What does your knock-through cost in Northfield?

Guide prices start at £1,200 and run to £14,000 depending on size and specification. Opening up a 3.5 m load-bearing wall between kitchen and dining room in a semi: around £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.

Knock-through walls in Northfield: common questions

How long does a knock-through take?

Most take 1–2 weeks on site. The steel usually takes one to two weeks to make after the engineer's calculations are approved, so allow three to five weeks from instruction to finished walls. The wall removal and steel installation themselves typically take two to four days; plastering, drying and refitting sockets take up the rest.

Do you cover Northfield?

Yes. Northfield (B31) is about 7 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 Northfield?

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.

Close to Northfield

Other work we do in Northfield

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