Covering Whitchurch, South Glamorgan
Alongside Whitchurch, South Glamorgan, we also cover Cardiff, Caerphilly (4 miles to the north) and Penarth.
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 dormer loft conversion?
A dormer loft conversion builds a box-shaped extension out from the rear slope of the roof, creating vertical walls and full head height across most of the new floor. It is the most popular type of loft conversion because it gives the most usable space for the cost.
- Planning and building regulations checks under Welsh rules
- Steelwork and new floor structure
- Staircase, insulation and plasterboard
What is the guide price for a dormer loft conversion in Whitchurch, South Glamorgan?
What dormer loft conversions typically cost. These are guide ranges; the written quote for your house replaces them.
| Dormer loft conversions | Guide price incl. VAT |
|---|---|
| Rear dormer, bedroom only | £50,000 to £65,000 |
| Full-width dormer with en-suite | £60,000 to £80,000 |
| L-shaped dormer (over rear outrigger) | £65,000 to £90,000 |
How is a dormer loft conversion approved in Whitchurch, South Glamorgan?
Planning decisions in Wales are made by the local council, using permitted development rules set by the Welsh Government rather than England’s. Building regulations in Wales have their own approved documents, and the Party Wall etc. Act 1996 applies to work on shared walls and boundaries.
Wales has its own loft and roof permitted development rules.
What should I think about before starting?
- Dormer cheeks close to a shared wall can trigger the Party Wall Act.
- A flat dormer roof needs proper falls and a quality membrane.
From first call to completion
- Send us the details. Give us a postcode, a rough idea of size and some photos, by phone, form or the guide price tool.
- 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.
Dormer loft conversions: common questions
How much does a dormer loft conversion cost?
Typically £50,000 to £80,000 including VAT, and up to around £90,000 for an L-shaped dormer.
How long does a dormer conversion take?
Around 8 to 12 weeks on site.
How do I get a price for dormer loft conversions in Whitchurch, South Glamorgan?
Use the guide price tool for a ballpark figure, then book a visit for a fixed written price for the agreed specification.
Dormer loft conversions in nearby towns
- Dormer loft conversions in Cardiff
- Dormer loft conversions in Caerphilly
- Dormer loft conversions in Penarth
- Dormer loft conversions in Pontypridd
Learn more about dormer loft conversions, or see every project we cover in Whitchurch.