Covering Llantwit Major
Alongside Llantwit Major, we also cover Cowbridge, Bridgend (8 miles to the north-west) and Barry.
Homes in South Glamorgan
Welsh homes include long terraces built into hillsides, stone cottages and modern estates, and sloping sites often shape how and where an extension can go.
What is a structural alteration?
We arrange the structural calculations, support the floors and roof above with temporary props while the wall comes out, install the steel on padstones, then encase it for fire protection and make good. Chimney breast removals and new openings in external walls follow the same process.
- Temporary works and propping
- Steel beam installation on padstones
- Fire protection and plaster encasement
How much should I budget for a structural alteration?
What structural alterations typically cost. These are guide ranges; the written quote for your house replaces them.
| 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 |
Do you need permission for a structural alteration in Llantwit Major?
In Wales the planning rules, including what counts as permitted development, are set by the Welsh Government, and Welsh building regulations differ in places from England’s. We check both against your house before drawings are finalised, and handle party wall notices where needed.
Internal work like this does not usually need planning permission in Wales unless the building is listed.
What can change the price or programme?
- Shared chimney breasts and walls can involve the Party Wall Act.
- Pipes and cables in the wall need rerouting first.
How does the project run?
- Start with a conversation. A short call or the online form is enough for us to understand what you want to build.
- We visit and measure. A surveyor checks the house, the boundaries and the ground, and discusses what is realistic.
- Design and fixed price. You get drawings and a written price for the agreed specification before anything is ordered.
- We build it. Work follows an agreed programme, with inspections at each stage and a final sign-off.
What people ask before starting
Do I need building regulations approval to remove a wall?
Yes, for any load-bearing wall. Non-structural partitions usually do not need approval.
How long does it take?
The structural work is usually done in a few days, with one to three weeks including making good.
Do you work in Llantwit Major?
Yes. Llantwit Major is within our coverage for structural alterations, along with nearby Cowbridge and Bridgend.
Other towns nearby
- Structural alterations in Cowbridge
- Structural alterations in Bridgend
- Structural alterations in Barry
- Structural alterations in Porthcawl
Learn more about structural alterations, or see every project we cover in Llantwit Major.

