Covering Caernarfon
Alongside Caernarfon, we also cover Llangefni (8 miles to the north), Bangor and Pwllheli.
Homes in Gwynedd and Anglesey
Across Wales you find valley terraces, coastal towns, rural stone houses and newer estates, so access, slopes and local materials all feature in the design.
What do you get with an upward extension?
An upward extension adds a new storey on top of an existing house, most often turning a bungalow into a two-storey or chalet-style home. It can double the floor area without using any of the garden.
- Planning and building regulations checks under Welsh rules
- Roof removal and temporary weather protection
- Staircase and changes to the ground floor layout
What is the guide price for an upward extension in Caernarfon?
Typical ranges for bungalow and upward extensions. Ground conditions, access and specification move the final figure, which we fix in writing before work starts.
| Bungalow and upward extensions | Guide price incl. VAT |
|---|---|
| Chalet conversion with dormers (total) | £45,000 to £85,000 |
| New first floor, standard specification | £2,200 to £2,800 per m² |
| New first floor, good specification | £2,800 to £3,300 per m² |
| New first floor, high specification | £3,300 to £3,800 per m² |
Do you need permission for an upward extension in Caernarfon?
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.
Adding a storey in Wales needs planning permission.
What can change the price or programme?
- The staircase takes space from the ground floor plan.
- The house is exposed while the roof is off, so the sequence is planned tightly.
How does the project run?
- Tell us about the project. Call, use the guide price tool or send the form with a few photos and a postcode.
- Survey at your house. We look at the existing structure, services and access, and agree what the design needs to achieve.
- 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.
Your questions answered
Can I add a first floor to my bungalow?
Often yes, if the walls and foundations can carry the load and planning allows. We check the structure first.
How long does it take?
About 12 to 24 weeks on site.
Do you work in Caernarfon?
Yes. Caernarfon is within our coverage for bungalow and upward extensions, along with nearby Llangefni and Bangor.
Bungalow and upward extensions in nearby towns
- Bungalow and upward extensions in Llangefni
- Bungalow and upward extensions in Bangor
- Bungalow and upward extensions in Pwllheli
- Bungalow and upward extensions in Holyhead
Learn more about bungalow and upward extensions, or see every project we cover in Caernarfon.