What is a structural alteration?

A structural alteration changes how a house carries its loads, most often by removing a load-bearing wall and replacing it with a steel beam. It is how kitchens and dining rooms become open-plan, and how extensions are joined to the original house.
How much does a structural alteration cost in Leamington Spa?
In Leamington Spa, a structural alteration typically costs £4,250–£9,250 for a typical knock-through with steel beam, including VAT at 20% (standard rate). Prices in the West Midlands sit near the national average for this kind of work, and the range for Leamington Spa reflects that. Design, structural calculations and council fees are extra.
| Size or type | Guide range |
|---|---|
| A typical knock-through with steel beam | £4,250–£9,250 |
| Higher specification | £9,250–£11,500 |
Your quote will depend mainly on:
- Moving radiators, sockets and pipes
- Flush or downstand beam
- Floor and ceiling repairs
- What sits above the wall
A guide range is only a starting point: the guide price tool gives an instant figure for your size, and a free survey turns it into a fixed quote.
Do you need planning permission for a structural alteration in Leamington Spa?
Whether you need planning permission depends on your house and its location in England. In England removing a load-bearing wall does not need planning permission but does need building regulations approval with an engineer’s calculations. If the beam bears on a party wall, a party wall notice must be served.
Building regulations approval comes from the council’s building control service or a registered building control approver. The work is inspected at key stages, such as foundations, drainage and insulation, and a completion certificate is issued at the end.
We check this for your address before design work starts, so there are no surprises later.
What we handle
Handled as part of most structural alterations:
- Temporary propping
- Fire protection to the steel
- Building control application
- Structural engineer’s calculations and drawings
- Building control sign-off
- Making good, plastering and flooring repairs
How long does it take?
The build itself usually takes 1 to 2 weeks on site for a typical knock-through. Before that, surveys, drawings and approvals usually take 6 to 12 weeks, longer if the council asks for changes.
Building in Leamington Spa
Across the West Midlands, inter-war and post-war semis make up much of the housing, giving good scope for two-storey side extensions and hip-to-gable lofts.
From CV31 outwards, we take on projects throughout Leamington Spa and the surrounding parts of Warwickshire.
How it works
- 01
Free visit
We look at the property, talk through what you want and measure up. There is no charge and no obligation.
- 02
Drawings and written quote
We prepare the design and give you a written, itemised quote with inclusions and exclusions.
- 03
Permissions sorted
Applications, building control and neighbour arrangements, all before the start date.
- 04
Build and handover
Work follows the agreed programme, with inspections along the way and a completion certificate at the end.
Questions about structural alterations in Leamington Spa
Who approves a structural alteration in Leamington Spa?
Planning matters in Leamington Spa go to the council covering your address, and the work needs building control approval. We prepare and submit the applications for you.
How long does a knock-through take?
Usually 1 to 2 weeks on site, plus a few days for plastering to dry.
How much does a structural alteration cost in Leamington Spa?
In Leamington Spa, a structural alteration typically costs £4,250–£9,250 for a typical knock-through with steel beam, including VAT at 20% (standard rate). Your fixed price depends on the survey and drawings.
Do I need building regulations approval?
Yes. Removing a load-bearing wall is building work that needs approval, with calculations for the beam.
Can the beam be hidden?
Often, by setting it within the ceiling depth. It depends on the joists and span.
