Building services in Colwyn Bay
House extensions
- Single-storey extensions
- Double-storey extensions
- Side extensions
- Side return extensions
- Wraparound extensions
- Kitchen extensions
- Orangeries
- Glazed and contemporary extensions
- Porches
Loft conversions
- Dormer loft conversions
- Hip-to-gable loft conversions
- Mansard loft conversions
- Rooflight loft conversions
- Bungalow loft conversions
Garage, basement and barn conversions
New build homes
Renovations and structural work
Design and approvals
Guide prices in Colwyn Bay
| 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) |
| Kitchen extensions | £2,050–£3,150 per m² including a mid-range kitchen |
| 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 |
| Structural alterations and knock-throughs | £4,250–£8,750 for a typical knock-through with steel beam |
The guide for Colwyn Bay reflects typical costs in Wales, roughly 8% below the UK-wide figure.
Planning permission in Colwyn Bay
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.
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.
About building in Colwyn Bay
Terraced houses in Welsh towns often have narrow plots, which suits rear and side return extensions and rear dormers.
From LL29 outwards, we take on projects throughout Colwyn Bay and the surrounding parts of Clwyd. Colwyn Bay has a population of around 29,000.
How it works
- 01
Visit and measured survey
A free visit to understand the project, check access and take measurements.
- 02
Drawings and written quote
We prepare the design and give you a written, itemised quote with inclusions and exclusions.
- 03
Approvals in place
We handle planning, building control and neighbour notices before work starts.
- 04
Build and sign-off
We run the build to a written programme and hand over the completion certificate.
Questions from homeowners in Colwyn Bay
Do you work in Colwyn Bay?
Yes. We take on extensions, loft conversions, conversions, renovations and new builds across Colwyn Bay, including postcodes LL29.
How much does an extension cost in Colwyn Bay?
A single-storey extension in Colwyn Bay typically costs £1,800–£2,650 per m² of floor area, and a double-storey extension £1,500–£2,300 per m² of floor area (both floors), including VAT.
Is the home visit free?
Yes. The first visit to discuss your project and measure up for a quote is free, with no obligation.
How much does a loft conversion cost in Colwyn Bay?
A rear dormer loft conversion in Colwyn Bay typically costs £44,000–£62,500 for a typical rear dormer with en-suite, including VAT.
Do I need planning permission for an extension in Colwyn Bay?
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.