Wall removal is taking out an internal wall to open up rooms; where the wall is load-bearing, a steel beam sized by a structural engineer is installed on padstones to carry the weight above, with the work approved by building control.
Across Cornwall, people look into removing a wall to replace something worn out, to make the house work better for them, or to get it ready for a sale. We cover Redruth, Falmouth, St Austell and Truro and the smaller towns around them, working to the rules that apply in England. Expect a guide of £3,100–£8,200, VAT included, in the South West, and every quote follows a free visit.
- Guide price
- £3,100–£8,200 inc VAT
- Time on site
- 1–3 weeks including making good
- Planning rules
- England
- Price level
- About 2% above the national guide
- Towns listed
- 7
- Survey
- Free, with a written quote
Wall removal and steel beams prices in Cornwall
To help you plan, we show what removing a wall typically costs in Cornwall instead of holding figures back for a sales call. The range is £3,100–£8,200 with VAT, using rates in the South West that are about 2% above the national guide. A free survey then fixes your actual price.
| Type of job | What it usually involves | Guide in Cornwall |
|---|---|---|
| Non-load-bearing wall | Removing a stud or block partition and making good walls, ceiling and floor. | £800–£2,000 |
| Load-bearing wall up to 4m | A typical kitchen-diner knock-through with one steel beam, calculations and building control. | £3,100–£8,200 |
| Wide or complex opening | Openings over 4m, posts, flush beams or chimney breast removal. | £8,200–£16,500 |
What moves the price up or down:
- Opening width and the load the wall carries
- Services in the wall that need rerouting
- Floor and ceiling repairs where the wall stood
- Engineer, building control and any party wall costs
What do you get?
- Survey to establish what the wall supports and where loads go
- Structural engineer's calculations and beam specification
- Building control application and inspections
- Temporary propping and dust protection during the work
- Steel beam installed on padstones and packed tight
- Beam boarded or treated for fire protection
Homes in Cornwall
Older Cornish homes are often built of granite or slatey local stone, with slate roofs and sometimes slate-hung walls facing the weather. Cob cottages survive in places, Truro and Falmouth keep Georgian and Victorian streets, and many towns have rendered post-war houses, bungalows and newer estates on their edges.
Stone and cob properties often need breathable lime render, careful repointing and roof repairs. Post-war and newer homes commonly benefit from new windows, roofline renewal, external rendering and single-storey extensions.
Cornwall faces Atlantic gales, driving rain and salt-laden air, so render, pointing and window hardware on exposed elevations need a suitably robust specification.
Planning and building rules in Cornwall
For anyone in Cornwall, the relevant framework is England's. The summary below is general, so we always contact the council about your address before putting a price in writing.
Removing an internal wall does not need planning permission in England unless the house is listed.
If the wall is load-bearing, Building Regulations approval is needed, with a structural engineer’s calculations for the steel beam and padstones. Where the beam bears on a shared wall, the Party Wall etc. Act 1996 applies.
Rules change and every property is different, so we check the planning history and constraints for your address before we quote.
From survey to handover
We look at the job
Book a visit and we'll come to you. The survey covers measurements, the state of what's there now and any obvious constraints, so the price that follows is based on your actual home, not an average.
Your fixed price
We turn the survey notes into a written quote. The price is fixed for the specification we agree, and the document sets out materials, scope and payment stages in plain language.
Booking the work
Next comes planning the work itself. We set a start date that suits you, line up the right trades, and make sure any approvals for removing a wall are in place before the first day on site.
Finish and handover
On site, the agreed plan is followed and any change is put in writing first. At completion we do a final clean, go through the snagging list with you and leave you with the relevant documents.
How we work
Frequently asked questions
What happens to pipes and cables in the wall?
Pipes, cables and radiators in a wall being removed must be rerouted before demolition. Electrical work is done and certified by a qualified electrician, and pipework is diverted by a plumber, usually through the ceiling void or floor. We identify services during the survey and include rerouting in the quote, so there are no surprises once work starts.
Do you cover Redruth, Falmouth and St Austell?
Yes. As well as Cornwall, we cover Redruth, Falmouth and St Austell and the rest of Cornwall. Our coverage is UK-wide, so the process is the same wherever you are: a free site survey, a quote in writing that fixes the price for the agreed scope, and one point of contact while the work is planned and carried out.
What is a steel beam and why is it needed?
A steel beam, often called an RSJ, is a strong steel section installed where a load-bearing wall used to be, so the weight above is carried across the opening to the walls at each end. It sits on padstones that spread the load. The size depends on the span and the load, which a structural engineer calculates. The beam is then boxed in or plastered.
Can I have a beam that does not show?
A flush or hidden beam sits within the depth of the ceiling so there is no visible downstand, giving a clean, open look. It is possible where the floor joists can be connected into the side of the beam, which takes more steel and labour. It costs more than a standard beam below the ceiling. The engineer confirms whether it suits your house.
How long will removing a wall take?
On a typical home, allow 1–3 weeks including making good. Larger projects, older buildings and extra work found once things are opened up can extend that, while simpler jobs may be shorter. Your quote includes an estimate of time on site, and your point of contact keeps you updated on the programme as the work progresses.
Towns in Cornwall
Homes in all of the following Cornwall towns can get a written quote for removing a wall. Open a town page to see prices and the postcodes we cover.