Flint, North Wales
Side return extension in Flint
Infilling the narrow passage beside a Victorian or Edwardian back addition. If you live in Flint and want to know what a side return extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Flint sits in North Wales, with postcode districts including CH6. In Flint we check the boundary line and the neighbour's gutter before drawing a side return, because a few centimetres decide whether the wall goes on or beside the boundary.
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 Flint?
A side return extension in Flint is priced at £2,140–£3,530 per square metre including VAT as a guide, before kitchen fit-out and fees. 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 Flint?
Here is how the rules in Wales apply to a side return extension in Flint.
Welsh side-extension rules limit a single-storey side addition to 4 metres high and a 50% increase in the width of the original house, with tighter limits in conservation areas. Wraparounds usually need a planning application.
In Wales, as in England, the Party Wall etc. Act 1996 requires notice to neighbours before work to a shared wall or excavation near their foundations.
Conservation areas, National Parks and National Landscapes restrict permitted development in Wales, and listed buildings need listed building consent. We check your house's planning history and any conservation area before drawing, so the route is clear before you spend on plans.
What are homes in Flint like to extend?
Older terraces near the centre and post-war semis further out are typical of Flint. Sloping sites are common in Wales, so floor levels and retaining walls are designed at the start.
How a side return extension in Flint comes together
Survey visit
We visit free of charge, measure up, check access, drainage and neighbours' extensions, and note what you want the room to do.
Options and costs
We draw layout options and price each one, so the budget shapes the design rather than surprising you later.
Planning and regulations
We take the design through the right planning route, then produce the construction drawings and engineer's calculations for building control.
Written price, then build
Once the design and approvals are in place, you get a fixed written price and programme, and we build through to sign-off.
Side return extensions near Flint
Close by, we work in Neston, about 4.3 miles away, and Deeside, about 4.9 miles away.
- Side return extension in Neston
- Side return extension in Deeside
- Side return extension in Mold
- Side return extension in Buckley
- Side return extension in Heswall
Other work in Flint:
FAQ
Side return extension questions in Flint
Can you match the brick or stone on my Flint house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
What postcode areas do you cover around Flint?
Including CH6, and the surrounding North Wales area.
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.
Is the site visit in Flint free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Do you handle building control in Flint?
Yes. We apply to the council or a registered approver under the Welsh regulations and hand over the completion certificate.
Do I need a party wall agreement?
In Wales, usually yes if the extension is on or near a shared boundary or close to a neighbour's foundations. We serve the notices.