Wraparound extensions in Gwynedd and Anglesey

Covering Gwynedd and Anglesey

Our coverage across Gwynedd and Anglesey includes Bangor, Holyhead, Caernarfon and Llangefni.

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 a wraparound extension involve?

A wraparound extension combines a side return and a rear extension into one L-shaped build, giving the biggest possible ground-floor space on terraced and semi-detached houses. It usually creates a large open-plan kitchen, dining and living area across the back of the house.

Planning and building regulations checks under Welsh rules
Party wall process with both neighbours if needed
Optional kitchen supply and installation

What will a wraparound extension cost?

What wraparound extensions typically cost. These are guide ranges; the written quote for your house replaces them.

Wraparound extensions	Guide price incl. VAT
Standard specification	£3,400 to £3,800 per m²
Good specification	£3,800 to £4,250 per m²
High specification	£4,250 to £4,700 per m²

Do you need permission for a wraparound extension in Gwynedd and Anglesey?

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.

Wales has its own permitted development rules, set by the Welsh Government. Small single-storey rear extensions can often go ahead without an application, but the limits differ from England's and there is no larger-extension prior approval route, so we check the current Welsh rules for your house before drawings are finalised.

What should Gwynedd and Anglesey homeowners check first?

The corner steel connection is the critical detail and is designed by a structural engineer.
Both neighbours may need party wall notices.

How does the project run?

Start with a conversation. A short call or the online form is enough for us to understand what you want to build.
Free site visit. We measure up, look at access, drains and the structure, and talk through options and budget.
Drawings, approvals, written quote. We prepare the design, apply for the approvals it needs, and give you a fixed price in writing.
We build it. Work follows an agreed programme, with inspections at each stage and a final sign-off.

Questions about a wraparound extension in Gwynedd and Anglesey

How much does a wraparound extension cost?

Typically £3,400 to £4,700 per square metre including VAT. Many come in between £85,000 and £120,000 before the kitchen.

How long does a wraparound take?

Around 12 to 18 weeks on site after approvals.

Can you visit a house in Gwynedd and Anglesey to quote?

Yes. After a short call we arrange a site visit to measure up and agree what the design needs to do, then send a written price.

Other towns nearby

Learn more about wraparound extensions, or see every project we cover in Gwynedd and Anglesey.