Building projects we take on in Gwynedd
House extensions
- Single-storey extensions in Gwynedd
- Double-storey extensions in Gwynedd
- Side extensions in Gwynedd
- Side return extensions in Gwynedd
- Wraparound extensions in Gwynedd
- Kitchen extensions in Gwynedd
- Orangeries in Gwynedd
- Glazed and contemporary extensions in Gwynedd
- Porches in Gwynedd
Loft conversions
- Dormer loft conversions in Gwynedd
- Hip-to-gable loft conversions in Gwynedd
- Mansard loft conversions in Gwynedd
- Rooflight loft conversions in Gwynedd
- Bungalow loft conversions in Gwynedd
Garage, basement and barn conversions
- Garage conversions in Gwynedd
- Basement conversions in Gwynedd
- Barn conversions in Gwynedd
- Garden annexes in Gwynedd
New build homes
Renovations and structural work
Design and approvals
Guide prices in Gwynedd
| Project | Guide range (inc VAT) |
|---|---|
| Single-storey extensions | £1,800–£2,650 per m² of floor area |
| Double-storey extensions | £1,500–£2,300 per m² of floor area (both floors) |
| Dormer loft conversions | £44,000–£62,500 for a typical rear dormer with en-suite |
| Garage conversions | £16,500–£27,500 for a single integral garage |
| House renovations | £850–£1,650 per m² for a medium to full renovation |
| New build homes | £1,850–£2,950 per m² of floor area (build cost) |
Prices across Wales are typically 8% below the UK average for this kind of work, which is reflected in the range for Gwynedd.
Planning and building control in Gwynedd
In Wales a single-storey rear extension is often permitted development: up to 4 metres beyond the rear wall and up to 4 metres high, with eaves no higher than 3 metres within 2 metres of a boundary and no more than half the land around the original house covered. Wales has no larger home extension prior approval route, so deeper extensions need a planning application, as do extensions to flats, listed buildings and houses whose rights have been removed.
In Wales roof enlargements such as rear dormers can be permitted development within volume limits and design conditions. Dormers facing a road, balconies and conservation-area work need permission.
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.
Building in Gwynedd
Terraced houses in Welsh towns often have narrow plots, which suits rear and side return extensions and rear dormers.
Questions about building in Gwynedd
Do you cover all of Gwynedd?
Yes. We take on projects across Gwynedd, including Bangor, Llandudno, Holyhead and Caernarfon.
How much does an extension cost in Gwynedd?
A single-storey extension in Gwynedd typically costs £1,800–£2,650 per m² of floor area, including VAT.
Do I need planning permission in Gwynedd?
In Wales a single-storey rear extension is often permitted development: up to 4 metres beyond the rear wall and up to 4 metres high, with eaves no higher than 3 metres within 2 metres of a boundary and no more than half the land around the original house covered. Wales has no larger home extension prior approval route, so deeper extensions need a planning application, as do extensions to flats, listed buildings and houses whose rights have been removed.
Who approves building work in Gwynedd?
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.