One fixed price for the whole job — not the hours

Wall Knock-Through & Steel Beam Fair Price

Typical trade: builder. Move the sliders and answer the questions.

Describe the job or snap a photo — AI fills in the sizes

Is the wall load-bearing?
Plaster & decorate finish?
Skip needed?

Fair fixed price for the whole job

£4,343

Fair range: £3,821 – £5,124

3.5 m opening

Realistic time on site

4.5 days

Crew / total hours

2 · 67.0 h

Labour (67.0 h × £40)
£2,680
Materials
£533
Structural engineer calcs
£450
Building control
£400
Waste removal / skip
£280

Over £6,405? Ask why in writing.

  • No structural calcs or building control
  • No acrows / temporary propping
  • Steel not fire-protected (board or paint)

Insist on

  • One written fixed price for the full scope — no open-ended hours.
  • Deposit of 10–20% at most; balance after you inspect the work.
  • Any extra work agreed and priced in writing before it starts.
  • A standard 3–4 m steel is usually 3–5 days including making good.

Estimate for an experienced, insured tradesperson. Local prices vary — adjust the hourly rate for your area.

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