Covering Llangefni
We work in Llangefni (LL77) and the places around it, including Bangor, Caernarfon and Holyhead.
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 does an upward extension involve?
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
- New first-floor structure, walls and roof
- Staircase and changes to the ground floor layout
How much does an upward extension cost in Llangefni?
Use these ranges to budget for bungalow and upward extensions; the survey turns them into a fixed price for the agreed specification.
| 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 Llangefni?
In Wales the planning rules, including what counts as permitted development, are set by the Welsh Government, and Welsh building regulations differ in places from England’s. We check both against your house before drawings are finalised, and handle party wall notices where needed.
Adding a storey in Wales needs planning permission.
What can affect an upward extension?
- The house is exposed while the roof is off, so the sequence is planned tightly.
- Neighbours’ light and privacy are the main planning tests.
What are the steps?
- Tell us about the project. Call, use the guide price tool or send the form with a few photos and a postcode.
- Free site visit. We measure up, look at access, drains and the structure, and talk through options and budget.
- Price and paperwork. The design is priced line by line, and we submit the planning and building control applications.
- Build and hand over. Our teams build to the programme, building control inspects, and you get the completion paperwork at the end.
What people ask before starting
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 Llangefni?
Yes. Llangefni is within our coverage for bungalow and upward extensions, along with nearby Bangor and Caernarfon.
Also covering
- Bungalow and upward extensions in Bangor
- Bungalow and upward extensions in Caernarfon
- Bungalow and upward extensions in Holyhead
- Bungalow and upward extensions in Colwyn Bay
Learn more about bungalow and upward extensions, or see every project we cover in Llangefni.