Rhyl, North Wales
Side return extension in Rhyl
We plan and build side return extensions for homeowners in Rhyl. Infilling the narrow passage beside a Victorian or Edwardian back addition. Start with a free site visit, then a written price once the design is agreed.
Rhyl sits in North Wales, with postcode districts including LL18. Side returns suit the Victorian and Edwardian terraces found across parts of North Wales, where the kitchen sits in a narrow back addition.
Book a free site visit
Tell us about the house and we'll call to arrange a free, no-obligation visit.
How much does a side return extension cost in Rhyl?
In Rhyl, our guide for a side return extension is £2,140–£3,530 per square metre including VAT for a standard specification. Prices in Wales sit below our West Midlands baseline; sloping sites are the main variable.
| Size | Guide price inc VAT |
|---|---|
| 2 m wide × 6 m deep (12 m²) | £25,500–£42,500 |
| 2.5 m wide × 7 m deep (17.5 m²) | £37,500–£62,000 |
Ground conditions, glazing, the roof and how far the house is opened up move the final figure within the range.
Do you need planning permission for a side return extension in Rhyl?
The planning route for a side return extension in Rhyl is set by Wales's householder rules and your council.
In Wales a single-storey side extension can be permitted development if it is no more than 4 metres high and the house ends up no more than 50% wider than the original. Many side return infills on terraced streets, and most wraparounds, go through a householder application.
The Party Wall etc. Act 1996 also applies in Wales: two months' notice for work to a shared wall and one month for foundations dug close to a neighbour's building.
Conservation areas, National Parks and National Landscapes restrict permitted development in Wales, and listed buildings need listed building consent. At the first visit we measure what is there now and tell you which route fits: permitted development or a householder planning application.
What are homes in Rhyl like to extend?
Older terraces near the centre and post-war semis further out are typical of Rhyl. Sloping sites are common in Wales, so floor levels and retaining walls are designed at the start.
How a side return extension in Rhyl comes together
Free site visit
We measure the house and garden, look at the back wall, drainage and boundaries, and talk through what you want from the space.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Approvals
Permitted development check or householder planning application, then Building Regulations drawings to the Welsh Approved Documents and structural calculations, plus party wall notices where they apply.
Build and sign-off
We build to the approved drawings with regular updates, then hand over the building control completion certificate and any guarantees from suppliers.
Side return extensions near Rhyl
We also build side return extensions in nearby Prestatyn (3.7 miles) and Abergele (4.4 miles).
- Side return extension in Prestatyn
- Side return extension in Abergele
- Side return extension in Colwyn Bay
- Side return extension in Llandudno
- Side return extension in Flint
Other work in Rhyl:
FAQ
Side return extension questions in Rhyl
How much does a side return extension cost in Rhyl?
As a guide, £2,140–£3,530 per square metre including VAT for a standard specification. For example, 2 m wide × 6 m deep (12 m²): about £25,500–£42,500 at that rate. Your written price follows the survey.
Do you handle building control in Rhyl?
Yes. We apply to the council or a registered approver under the Welsh regulations and hand over the completion certificate.
Glass roof or solid roof with rooflights?
A glass roof gives the most light; a solid roof with long rooflights is warmer and quieter in rain. Both work.
Can I get a price without a visit?
Our online guide-price tool gives a range in a couple of minutes. A written price needs a survey.
How long does a rear extension take to build in Rhyl?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
What postcode areas do you cover around Rhyl?
Including LL18, and the surrounding North Wales area.