Extending your home in Llandudno
Every type of house extension in Llandudno, from single-storey kitchen extensions to two-storey additions, side returns and orangeries. We design, handle the approvals and build.
- Postcode districtsLL30
- Price regionWales (×0.93)
- Planning rulesWales
- Site visitFree, no obligation

Popular extension prices in Llandudno
Use these Llandudno 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) |
|---|---|---|
| Side return extensions | 11 m² | £24,500 – £31,000 |
| Double-storey extensions | 32 m² | £53,500 – £70,000 |
| Extensions over a garage | 12 m² | £23,000 – £30,500 |
| Wraparound extensions | 25 m² | £53,000 – £67,500 |
| Orangery extensions | 16 m² | £41,500 – £52,500 |
Approvals for an extension in Llandudno
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 rear extension of more than one storey can be permitted development only if the ground floor projects no more than 4 m, the upper floor no more than 3 m, it stays at least 10.5 m from the rear boundary and it is not in a conservation area, national park, National Landscape or World Heritage Site. Anything larger needs a planning application to the council.
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).
Which extension suits a Llandudno home?
Welsh housing ranges from stone terraces in the valleys to render-and-slate houses and modern estates, and the Welsh planning rules differ from England's in several places.
Depending on the plot, side return extensions and pitched roof extensions are often the strongest options, with bungalow extensions worth considering where there is room.
Where we work near Llandudno
Across LL30, we can visit, measure and advise. Nearby, we also take on projects in Colwyn Bay (5 miles), Rhyl (14 miles), Prestatyn (18 miles), Flint (29 miles), Buckley (33 miles). For homes towards Gwynedd, Bangor, Gwynedd is around 14 miles away.
Every extension type in Llandudno
- Building regulations for extensions · from £800
- Porch extensions · from £3,700
- Orangery extensions · from £27,500
- Side return extensions · from £16,500
- Extensions over a garage · from £22,000
- Bedroom extensions · from £24,000
- Single-storey rear extensions · from £19,500
- Conservatory replacement extensions · from £18,500
- Flat roof extensions · from £19,500
- Kitchen extensions · from £25,000
- Utility and boot room extensions · from £13,000
- Pitched roof extensions · from £20,500
- Extension plans and drawings · from £1,100
- Timber frame extensions · from £19,500
- Side extensions · from £20,000
- Annexe extensions · from £51,000
- Double-storey extensions · from £35,000
- Bungalow extensions · from £24,000
- Home office extensions · from £14,500
- Planning permission for extensions · from £300
- Glass box extensions · from £27,500
- Wraparound extensions · from £33,000
Free site visit
First, a site visit: we look at the house, garden, access and drains and listen to what you need.
Design and approvals
Drawings are prepared and agreed with you, then submitted for the right planning route and building regulations approval.
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
Work is carried out to the agreed programme, inspected by building control and signed off at the end.
Questions about extensions in Llandudno
How much does an extension cost in Llandudno?
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 you cover all of Llandudno?
Yes, including the surrounding parts of Clwyd. Site visits are free and there is no obligation.
Who do I contract with?
Your contract is with S&K Property Investments and Improvement Ltd, which designs and manages the project and the build teams who carry it out.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Llandudno, and the guide-price tool gives a range for your own size and finish in about a minute.
Book a free site visit in Llandudno
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.