UK structural alteration cost tool

Load-Bearing Wall Removal Cost Calculator

Estimate a doorway or open-plan structural knock-through using current March 2026 UK opening-size benchmarks and transparent professional-cost allowances.

Opening size

Other services / making-good allowance (£)

Include £200 structural engineer visit benchmark

Include £250–£450 building-control allowance

Postcode (optional)Enter a postcode to set the cost region automatically.

Cost region

Estimated load-bearing wall project budget

£1,940 – £2,140

Modelled core opening benchmark £1,495 before selected add-ons. Electrical, plumbing, radiators, party-wall work and final decoration can materially change the total and should be itemised in quotes.

Benchmark source: Checkatrade Load-bearing Wall Removal Cost Breakdown, updated March 2026. Structural engineer and building-control allowances are shown separately so they are not hidden inside the core wall-removal benchmark. See sources →

Load-Bearing Wall Removal planning toolBuilt from dated UK benchmarks with modelling assumptions kept separate.