Planning permission for two-storey extensions in Gwynedd and Anglesey

Gwynedd and Anglesey at a glance

Nation: Wales
Price region: Wales
Postcode areas: LL
Towns covered: 10 listed below, plus surrounding villages
Site visits: Free, no obligation

What a planning application involves

Getting planning permission for a two-storey extension involves checking whether permitted development applies, preparing drawings and supporting information, submitting a householder application to the council and dealing with questions until a decision is made. Many two-storey extensions need permission, especially side, wraparound and front ones.

Towns in Gwynedd and Anglesey include Bangor (Gwynedd and Anglesey) (LL57), Holyhead (LL64), Caernarfon (LL54), Llangefni (LL60), Bethesda (LL57) and Pwllheli (LL51). If yours isn't listed, we still cover it.

Fees

Planning drawings are a guide of £2,000–£3,500, priced in writing before the design stage starts. Householder planning application: £585.

Rules in Wales

In Wales, a householder planning application costs £585, and decisions are normally made within 8 weeks. Wales allows more under permitted development than England, including some two-storey side extensions, so we check the Welsh tests first. Applications go to the local planning authority, and some councils offer pre-application advice.

Approval in Wales: Householder planning application: £585. Councils normally decide householder applications within 8 weeks.

Building regulations: Building regulations approval under the Welsh Approved Documents, which differ from England's in places (notably energy efficiency).

The Party Wall etc. Act 1996 applies in Wales, so notices may be needed for work on or near a shared wall or boundary.

Getting the design right

Design to local guidance

Most councils publish guidance on extensions covering set-backs, roof heights, boundary gaps and neighbours' light. Designing to it from the start makes approval more likely and reduces the chance of being asked to make changes during the application.

Check the history first

Planning conditions from when the house was built, earlier extensions and Article 4 directions can all remove permitted development rights. We check the council's records and your house's history before design starts, so the route is clear.

How we work in Gwynedd and Anglesey

Start at your house
We come to your home in Gwynedd and Anglesey, measure up, check the ground floor walls and roof structure, and note anything near the boundaries.
Plans, then approval
Measured survey, design, then the right approval route for your house. We explain each step before we take it.
Engineer it
Foundations sized for two floors, steels for any openings, and building control approval, all before anyone starts on site.
Build it
The new structure goes up first, then we open into the house, finish inside and get the completion certificate.

Towns we cover in Gwynedd and Anglesey