House Extensions in Redhill (RH1)
Redhill's Victorian terraces were built with a rear addition and a strip of ground beside it, and that strip is the single most useful piece of land on the property. Most of the extension work we price in RH1 is about turning it into part of the house.
The side return, and why it works so well here
The classic Redhill terrace has a narrow rear addition with a dead alley running alongside it — too narrow to use, usually holding bins and a drain.
Building across it is what turns a cramped galley kitchen into a room the household actually lives in, and because the ground is already within the boundary it is often a more straightforward proposition than pushing further back into the garden. The details are where these jobs are won or lost: the existing drain almost always needs dealing with properly, the party wall on one or both sides brings its own process, and rooflights matter more than usual because you are covering the space that was bringing light into the middle of the plan.
Semis, estates and the room at the back
The 1930s semis towards the edges of Redhill are a different job — more width to start with, and rear elevations that take a single-storey addition across most of the back without the light problems a terrace has. On the newer estates the constraint is rarely structural; it is what the plot and the surroundings will take. In both cases the useful question is not how big an extension can be, but where the existing house is failing: usually a kitchen in the wrong place rather than a shortage of square metres.
Party walls and neighbours, dealt with early
A terrace or semi extension in Redhill nearly always touches a boundary, and that is a process worth starting early rather than discovering halfway through.
We will tell you plainly at survey what the job is likely to involve on that front, so the programme we give you is one that can actually be met.
More in Redhill
Everything we do in Redhill is on the Redhill area sheet, and the full detail of how we approach this trade is on the extensions & renovations page.
Common questions
Q.01Is a side-return extension worth it on a small terrace?
On a Redhill terrace it is usually the change that makes the most difference per pound spent, because it converts land you already own but cannot use. Whether it stacks up for your house depends on the width of the return and where the drains sit, which we check at survey.
Q.02What happens to the drain running down the side?
It gets dealt with properly — either rerouted or built over with the correct access, depending on what it serves. Building over a drain badly is one of the more expensive things to put right later, so it is priced as its own item.
Q.03Do I need to sort out the party wall with my neighbour?
Where the work affects a shared wall there is a process to follow. We will say at survey what your job is likely to need so you can start it in good time, and we work to whatever is agreed.
Q.04Can you extend a newer estate house?
Yes, and they are often straightforward builds. The questions there tend to be about what the plot and the surroundings will take rather than about the structure of the house.
Thinking about extensions & renovations in Redhill?
Tell us what you are planning. We come out, look at the job properly and give you a price for it.