Extensions in Holyhead: design, planning and build
Looking to extend your home in Holyhead? Start here: extension types, guide prices for Holyhead, the planning rules that apply and how a project runs.
- Postcode districtsLL65
- Price regionWales (×0.93)
- Planning rulesWales
- Site visitFree, no obligation
Holyhead extension prices at a glance
Use these Holyhead guide prices to sense-check a budget; the guide-price tool narrows them to your own size, and the site visit turns them into a written figure.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Orangery extensions | 16 m² | £41,500 – £52,500 |
| Double-storey extensions | 32 m² | £53,500 – £70,000 |
| Conservatory replacement extensions | 14 m² | £27,500 – £36,000 |
| Side return extensions | 11 m² | £24,500 – £31,000 |
| Kitchen extensions | 20 m² | £39,000 – £49,500 |
| Single-storey rear extensions | 20 m² | £38,000 – £48,500 |
| Wraparound extensions | 25 m² | £53,000 – £67,500 |
Which extension suits a Holyhead home?
In Wales, terraced houses with rear offshoots are common in the towns, while detached houses and bungalows dominate in rural areas.
Depending on the plot, bungalow extensions and single-storey rear extensions are often the strongest options, with pitched roof extensions worth considering where there is room.
Where we work near Holyhead
Our survey diary covers Holyhead, including LL65. The same team covers Llangefni (11 miles), Bangor, Gwynedd (19 miles), Caernarfon (19 miles), all within easy reach. Llandudno, in Clwyd, is roughly 31 miles from Holyhead and also on our list.
Approvals for an extension in Holyhead
In Wales a single-storey rear extension can usually project up to 4 m beyond the rear wall without a planning application, if it is no more than 4 m high, keeps eaves to 3 m and overall height to 4 m within 2 m of a boundary, and covers no more than half the land around the original house. Wales has no larger home extension prior approval scheme.
In Wales a single-storey side return can fall within permitted development if it stays within the 4 m height limit and the width rules for side extensions. Conservation areas and listed buildings need consent, and the Party Wall Act applies to work on or near a shared wall.
In a conservation area, national park, National Landscape or World Heritage Site the permitted development limits are tighter (no side or two-storey extensions without an application). Listed homes need listed building consent, and if permitted development rights have been removed, any extension needs an application.
The Party Wall etc. Act 1996 applies in Wales as in England: notice must be served before work to a shared wall, building on the boundary, or excavating close to a neighbour's foundations.
Applications are decided by the local planning authority (your county or county borough council, or the national park authority).
Choose an extension type
- Bedroom extensions · from £24,000
- Pitched roof extensions · from £20,500
- Kitchen extensions · from £25,000
- Extension plans and drawings · from £1,100
- Double-storey extensions · from £35,000
- Porch extensions · from £3,700
- Annexe extensions · from £51,000
- Planning permission for extensions · from £300
- Wraparound extensions · from £33,000
- Home office extensions · from £14,500
- Extensions over a garage · from £22,000
- Building regulations for extensions · from £800
- Bungalow extensions · from £24,000
- Utility and boot room extensions · from £13,000
- Side return extensions · from £16,500
- Glass box extensions · from £27,500
- Orangery extensions · from £27,500
- Side extensions · from £20,000
- Conservatory replacement extensions · from £18,500
- Single-storey rear extensions · from £19,500
- Timber frame extensions · from £19,500
- Flat roof extensions · from £19,500
Free site visit
It starts with a visit to your house to measure, check access and talk through ideas and budget.
Design and approvals
We produce the drawings and structural design, and manage the approvals so they are in place before work starts.
Fixed written price
The price is fixed in writing once the design is settled, with a clear programme and payment stages.
Build and sign-off
We build it with one project manager, book the building control inspections and hand over the completion certificate.
Questions about extensions in Holyhead
How much does an extension cost in Holyhead?
Using our Wales factor (×0.93), a standard-spec single-storey extension of 20 m² is a guide £38,000 to £48,500 including VAT, and a 32 m² two-storey extension £53,500 to £70,000. Your written price follows the survey.
Do I need planning permission for an extension in Holyhead?
Not always. It depends on the size, position and your property's history. In Wales many single-storey rear extensions up to 4 m are permitted development.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Holyhead, and the guide-price tool gives a range for your own size and finish in about a minute.
How long does an extension take in Holyhead?
Usually 2 to 4 months of design and approvals, then 10 to 16 weeks on site for a single-storey extension or 16 to 24 weeks for two storeys.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
Book a free site visit in Holyhead
We will measure up, check the planning position and give you honest guide figures.
- Free, no-obligation site visit
- Planning route checked before you spend on drawings
- Written price once the design is agreed
- Building control sign-off at the end
Prefer to talk? Call 0800 088 6341 or .
Book a free site visit
Tell us a little about the project and we will arrange a time.