Covering Portishead
Our coverage around Portishead (BS20) also includes Clevedon, Kingswood and Chepstow.
Homes in the South West
Homes in the South West range from coastal and rural properties in stone and slate to city terraces and modern estates, so extensions are designed to match the local materials.
What is a structural alteration?
Structural alterations change the load-bearing parts of a house, most often removing a wall between two rooms and putting in a steel beam to create an open-plan layout. The work needs a structural engineer’s design and building regulations approval.
- Structural engineer’s design and calculations
- Temporary works and propping
- Steel beam installation on padstones
How much should I budget for a structural alteration?
Indicative costs for structural alterations. London and the South East usually sit towards the top of each range.
| Structural alterations | Guide price incl. VAT |
|---|---|
| Single load-bearing wall removal with steel | £3,000 to £7,500 |
| Chimney breast removal with support | £1,800 to £4,500 |
| Multiple walls or full open-plan remodel | £8,000 to £20,000 |
Planning and building rules in Portishead
English projects need planning clearance from the local council, building regulations sign-off from building control, and party wall notices where the work is on or near a shared boundary. We prepare and manage all three.
Internal work like this does not usually need planning permission unless the house is listed or your permitted development rights have been removed.
What can affect a structural alteration?
- Shared chimney breasts and walls can involve the Party Wall Act.
- The beam size can mean a downstand in the ceiling unless it is set flush within the floor.
From first call to completion
- Start with a conversation. A short call or the online form is enough for us to understand what you want to build.
- Survey at your house. We look at the existing structure, services and access, and agree what the design needs to achieve.
- Drawings, approvals, written quote. We prepare the design, apply for the approvals it needs, and give you a fixed price in writing.
- Construction and completion. One site lead co-ordinates every trade through to the building control certificate.
Questions about a structural alteration in Portishead
How much does it cost to remove a load-bearing wall?
Usually £3,000 to £7,500 including VAT for a single wall with a steel beam, calculations and making good.
How do I know if a wall is load-bearing?
We check on site and confirm with the structural engineer.
Do you work in Portishead?
Yes. Portishead is within our coverage for structural alterations, along with nearby Clevedon and Kingswood.
Structural alterations near Portishead
- Structural alterations in Clevedon
- Structural alterations in Kingswood
- Structural alterations in Chepstow
- Structural alterations in Newport
Learn more about structural alterations, or see every project we cover in Portishead.

