Covering Llangefni
We work in Llangefni (LL77) and the places around it, including Bangor, Caernarfon and Holyhead.
Homes in Gwynedd and Anglesey
Housing in Wales ranges from terraced streets in the valleys and older industrial towns to stone-built homes in rural areas and modern estates around the cities.
What is included in architectural design and planning in Llangefni?
Designing and building under one roof means the drawings are priced as they are drawn, so there are fewer surprises when the quote arrives. If you only need drawings and a planning application, we can do that and you are free to use any builder.
- Measured survey of the existing house
- Building regulations drawings and specification
- Structural engineer’s calculations
How much does architectural design and planning cost in Llangefni?
Guide prices for architectural design and planning, including VAT where it applies. Your fixed price is confirmed in writing after the survey.
| Architectural design and planning | Guide price incl. VAT |
|---|---|
| Measured survey and existing drawings | £500 to £1,200 |
| Planning drawings and application | £1,200 to £3,000 |
| Building regulations drawings and specification | £1,000 to £2,500 |
| Structural calculations | £500 to £2,000 |
How is architectural design and planning approved in Llangefni?
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.
We prepare applications to Welsh councils and check the Welsh permitted development rules, which differ from England's.
What should I think about before starting?
- Planning and building regulations are separate approvals; most projects need building regulations even when planning is not needed.
- Pre-application advice from the council can help on sensitive sites.
From first call to completion
- Start with a conversation. A short call or the online form is enough for us to understand what you want to build.
- 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.
- Build and hand over. Our teams build to the programme, building control inspects, and you get the completion paperwork at the end.
Architectural design and planning: common questions
How much do extension plans cost?
Typically £3,000 to £7,000 including VAT from measured survey to building regulations drawings, plus council fees.
How long does planning take?
Councils aim to decide householder applications within eight weeks of validation.
Can you visit a house in Llangefni 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.
Also covering
- Architectural design and planning in Bangor
- Architectural design and planning in Caernarfon
- Architectural design and planning in Holyhead
- Architectural design and planning in Colwyn Bay
Learn more about architectural design and planning, or see every project we cover in Llangefni.

