Rainhill, Merseyside
Side return extension in Rainhill
Infilling the narrow passage beside a Victorian or Edwardian back addition. We design, get the approvals for and build side return extensions in Rainhill and the surrounding area, with one contract from the first survey to building control sign-off.
Rainhill and its postcode districts L35 are part of our Merseyside coverage. Side returns suit the Victorian and Edwardian terraces found across parts of Merseyside, 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 Rainhill?
In Rainhill, our guide for a side return extension is £2,160–£3,570 per square metre including VAT for a standard specification. North West prices sit below our West Midlands baseline; access on terraced streets is the main variable.
| Size | Guide price inc VAT |
|---|---|
| 2 m wide × 6 m deep (12 m²) | £26,000–£43,000 |
| 2.5 m wide × 7 m deep (17.5 m²) | £38,000–£62,500 |
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 Rainhill?
Here is how the rules in England apply to a side return extension in Rainhill.
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 Rainhill like to extend?
Rainhill has long runs of terraced houses with back yards and alleys, plus 1930s semis further out. Yard extensions on terraces are often single-storey and close to both boundaries.
How a side return extension in Rainhill 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, prior approval or planning application, then Building Regulations drawings 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 Rainhill
From Rainhill, the nearest places we also cover are Whiston (1.0 miles) and Prescot (1.7 miles).
- Side return extension in Whiston
- Side return extension in Prescot
- Side return extension in St Helens
- Side return extension in Huyton
- Side return extension in Widnes
Other work in Rainhill:
FAQ
Side return extension questions in Rainhill
Is the site visit in Rainhill free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Do I need planning permission for a rear extension in Rainhill?
Often not for a single-storey rear extension of up to 3 metres (4 metres on a detached house) under permitted development, or up to 6 or 8 metres with prior approval, unless the house is in a conservation area or its rights have been removed.
Can I combine a side return with a rear extension?
Yes; that is a wraparound extension, and it gives the biggest open-plan room a terrace can have.
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.
What postcode areas do you cover around Rainhill?
Including L35, and the surrounding Merseyside area.
Can you match the brick or stone on my Rainhill house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.