Redhill, Surrey
Side return extension in Redhill
Infilling the narrow passage beside a Victorian or Edwardian back addition. If you live in Redhill 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.
Redhill is covered from our Surrey round, including RH1 and RH2. Side return projects in Redhill usually start with a drainage survey of the side passage.
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 Redhill?
In Redhill, our guide for a side return extension is £2,580–£4,260 per square metre including VAT for a standard specification. South East prices run above our West Midlands baseline, mainly on labour rates and clay-soil foundations.
| Size | Guide price inc VAT |
|---|---|
| 2 m wide × 6 m deep (12 m²) | £31,000–£51,000 |
| 2.5 m wide × 7 m deep (17.5 m²) | £45,000–£74,500 |
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 Redhill?
The planning route for a side return extension in Redhill is set by England's householder rules and your council.
Side return infills and the side leg of a wraparound are treated as side extensions in England: single-storey, no more than 4 metres high and no wider than half the original house. They are not permitted development in conservation areas, National Parks or National Landscapes, and a joined wraparound often needs a planning application because the side and rear rules apply together.
The Party Wall etc. Act 1996 applies in England: you serve notice two months before work to a shared wall, and one month before digging foundations within 3 metres (or 6 metres for deeper foundations) of a neighbour's building. Neighbours can agree in writing; if they dissent, surveyors agree an award.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always 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 Redhill like to extend?
Commuter semis and detached houses make up much of Redhill, and longer gardens make England's prior approval route for deeper rear extensions worth considering.
How a side return extension in Redhill 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.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
Approvals
Permitted development check, prior approval or planning application, then Building Regulations drawings and structural calculations, plus party wall notices where they apply.
Fixed price and build
A written price for the agreed design, a start date and a named contact through the build, ending with the building control completion certificate.
Side return extensions near Redhill
Close by, we work in Reigate, about 1.5 miles away, and Horley, about 4.6 miles away.
- Side return extension in Reigate
- Side return extension in Horley
- Side return extension in Caterham
- Side return extension in Coulsdon
- Side return extension in Banstead
Other work in Redhill:
FAQ
Side return extension questions in Redhill
What postcode areas do you cover around Redhill?
Including RH1 and RH2, and the surrounding Surrey area.
How long does a rear extension take to build in Redhill?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
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.
Will I need a structural engineer?
Yes for the beam over the new opening and usually the foundations; we arrange them and their calculations go to building control.
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.
Do you handle building control in Redhill?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.