What is a rooflight loft conversion?

A rooflight loft conversion (sometimes called a roof window conversion) keeps the existing roof shape and adds roof windows that sit flush with the slope. The floor is strengthened, a staircase is added and the space is insulated and finished.
How much does a rooflight loft conversion cost in Maesteg?
In Maesteg, a rooflight loft conversion typically costs £27,500–£41,500 for a typical rooflight conversion, including VAT at 20% (standard rate). We start from a UK-wide guide and adjust it for Wales, where labour and materials are typically about 8% below average. Design, structural calculations and council fees are extra.
| Size or type | Guide range |
|---|---|
| A typical rooflight conversion | £27,500–£41,500 |
| Higher specification | £41,500–£52,000 |
Your quote will depend mainly on:
- Number of roof windows
- Floor and roof strengthening
- Storage and finishes
- Bathroom or not
Use the guide price tool to see how size and specification change the figure, then ask for a written, itemised quote.
Do you need planning permission for a rooflight loft conversion in Maesteg?
Before anything is built in Maesteg, we confirm which approvals apply in Wales. In Wales roof windows that sit close to the roof slope are generally permitted development outside protected areas.
Building regulations in Wales are set by the Welsh Government. Approval comes from the council’s building control service or a registered building control approver, with inspections during the work and a completion certificate at the end.
Our first visit includes a check of your planning history, so you know the route before paying for drawings.
What we handle
The work we manage on a rooflight loft conversion:
- Head-height survey
- Electrics, heating and plastering
- Drawings and structural calculations
- Staircase and fire-safe escape route
- Roof windows installed
- Floor joists and any steel beams
How long does it take?
The build itself usually takes 4 to 6 weeks on site. Allow time beforehand for drawings and approvals, usually 6 to 12 weeks.
Building in Maesteg
Terraced houses in Welsh towns often have narrow plots, which suits rear and side return extensions and rear dormers.
From CF34 outwards, we take on projects throughout Maesteg and the surrounding parts of Mid Glamorgan.
How it works
- 01
Survey and brief
We visit, discuss your ideas and budget, and survey the property or site at no cost.
- 02
Design and fixed quote
Drawings, structural calculations and an itemised, fixed price for the agreed specification.
- 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 rooflight loft conversions in Maesteg
How much does a rooflight loft conversion cost in Maesteg?
In Maesteg, a rooflight loft conversion typically costs £27,500–£41,500 for a typical rooflight conversion, including VAT at 20% (standard rate). Your fixed price depends on the survey and drawings.
How long does it take?
Usually 4 to 6 weeks on site.
How much head height do I need?
Around 2.2 metres or more from the top of the ceiling joists to the ridge is a good starting point. Insulation and new floor joists reduce the height.
Who approves a rooflight loft conversion in Maesteg?
Planning matters in Maesteg go to the council covering your address, and the work needs building control approval. We prepare and submit the applications for you.
Do I need planning permission for a rooflight loft conversion in Maesteg?
In Wales roof windows that sit close to the roof slope are generally permitted development outside protected areas.
Can I have a bathroom?
Yes, where there is enough head height at the shower or bath position.
