I.C Developments, Design & Build
A newly built brick and tile detached house nearing completion, with a mini digger on the plot and open fields behind
Areas we cover

Builders in Warlingham, high on the downs.

Extensions, loft conversions, new builds and whole house refurbishments across CR6, from Warlingham Green and Limpsfield Road out to Hamsey Green, Chelsham and Farleigh. One contract, one number to ring, from the first survey through to handover.

CHAS Accredited SSIP Assessed Fully Insured Building since 1996
Warlingham, Surrey

Big gardens, high ground and a green belt line that runs closer than most people expect. Warlingham rewards homework.

Warlingham stands near the top of the North Downs, high enough that the weather turns up here a good half hour before it reaches the valley towns. The village grew outwards from Warlingham Green, the triangle of grass with the war memorial on it where the shops and the pubs still gather, then spread north and south along Limpsfield Road until it met Hamsey Green at one end and farmland at the other. Our office is in Reigate, roughly twelve miles away, which is about half an hour over the downs or round the M25 depending on how the traffic is behaving. That is close enough for our team to be on site at eight, and close enough for us to call back in months after handover if something wants a second look.

People here tend to build rather than move, and the reason is arithmetic as much as sentiment. Warlingham is ringed by protected countryside, so very little new housing appears, the stock that exists changes hands slowly and the schools keep families in one place. What the village does have is space. Postcode CR6 is full of houses that sit well back behind their own drive with a garden long enough to take another room, which is why our enquiries here are so often an extension, a loft, or a whole house brought up to date in one go rather than a move to something bigger.

Under all of it is chalk with a cap of clay and flints, and the two behave nothing like each other. Chalk carries load and lets water away. Clay swells through a wet winter, shrinks back in a dry summer and, where a mature tree is close by, decides how far down a foundation has to go before anyone lays a brick. Drainage needs the same care. A soakaway that works perfectly on clean chalk can fail a percolation test on a flinty clay plot two roads away, and then the whole surface water strategy has to change. We dig trial holes and shoot levels before we put a figure on the groundworks.

We are a design and build company based in Reigate, and Ian has been building since 1996. We are CHAS accredited, SSIP assessed and fully insured, and the work is carried out by our own skilled craftsmen and by trades we have used for years rather than whoever happens to be free that week. Groundworks, structure, roofing, joinery, kitchens, bathrooms, decorating and the clearing up at the end all sit under one contract with one person answering the phone. There is a fair spread of it on our recent work page if you would rather see than read.

The local stock

What Warlingham houses are actually made of.

Five different eras of building sitting on the same hill, each one wanting a different approach.

The oldest houses cluster near the green and the parish church. Solid brick, nine inches thick, lime mortar, clay peg tiles and either no damp proof course at all or a slate one that gave up decades ago. There is no cavity to insulate, so warmth has to come from the roof, the floors, the windows and breathable finishes that let the walls carry on doing what they were built to do. Further out along the lanes towards Chelsham and Farleigh you find farmhouses, flint and brick outbuildings and barns that have been converted, which are a different job again.

Then comes the between the wars ribbon along Limpsfield Road and the roads that lead off it. Early cavity walls, hipped clay tile roofs, pebbledash or hung tile at first floor, bay windows and shallow strip footings that were perfectly adequate in 1934 and are not what a modern extension is founded on. Those cavities were rarely filled, the wall ties are now the age where they are worth an inspection, and the original drainage is usually salt glazed clay with the joints starting to open. None of that is alarming. It simply has to be seen and priced before work starts, not after the walls come down.

The 1950s and 60s brought bungalows and chalet bungalows on wide plots, and they are the most interesting houses in the village from a building point of view. A single storey house on a generous plot can go up, go out, or come down and be replaced, and the right answer depends on the roof pitch, the ridge height and how close the neighbours are. Later closes from the 1980s onward tend to have trussed roofs, which convert perfectly well but need steel and more work than a traditional cut roof. Garages of that era regularly have corrugated asbestos cement roofs, and those come off under a licensed contractor with the paperwork to prove it.

What all of this means in practice is that the survey matters more than the brochure. The same rear extension costs one figure on a 1960s bungalow with a clean chalk plot and a different figure on a solid wall Victorian house with a tree in the wrong place. We would rather tell you that at the kitchen table than halfway through the groundworks.

What we look at on the first visit

An hour at the house settles most of it. We are reading the walls, the roof, the ground and the boundary, and by the end of it we can usually tell you which route the job takes and roughly what it involves.

If what you want will not work, or will not be worth the money, we say so on that visit. There is almost always a better way to get the room you are after, and we are happy to talk that through instead.

  • The wall build up. Solid or cavity, filled or empty, and how a new wall is going to meet the old one without carrying damp across the join.
  • The roof. Cut rafters or trusses, ridge height, and whether the loft gives you a real room or a very expensive cupboard with a rooflight.
  • Ground and water. Depth of the clay cap, nearby trees, where the existing drains run and whether a soakaway stands a chance on your plot.
  • The boundary. Where the green belt line falls, whether the conservation area reaches you, and whether a party wall notice is going to be needed.
What we do here

Six services, shaped by this village.

The same six things we do everywhere, applied to the houses that actually stand in CR6.

Local coverage

The corners of CR6, one by one.

Six places within three miles of each other, and every one of them builds differently.

Warlingham Green. The heart of the village and the oldest part of it. Shops, pubs and brick houses that were standing long before the estates arrived, with the parish church a short walk away. Work here is careful rather than large. Kitchens, bathrooms, chimney and roof repairs, and extensions detailed so they cannot be read from the street.

Hamsey Green. North along Limpsfield Road on the boundary with Sanderstead, with its own parade of shops and a pond that gives the place its name. The housing is mostly 1930s and post war semis and detached with room at the back, which makes it loft conversion and rear extension country. A good share of our CR6 enquiries start here.

Tithepit Shaw Lane. Running west off Limpsfield Road towards the valley, this is where the ground begins to fall away. Levels, retaining and where the surface water ends up are the first three things we look at on a plot down there, long before anyone chooses a worktop.

Chelsham. East of the village and entirely green belt. Common land, working farms and houses scattered along quiet roads on generous plots. The constraint out here is policy rather than space, because an extension is measured against the size of the original building, so the drawings earn their money.

Farleigh. Smaller again. A handful of houses, a golf course and a small old church at the end of narrow lanes with no pavement and no street lighting. Access is the practical problem rather than the building. We use smaller vehicles, book deliveries for the quiet part of the day and keep a passing place clear.

Limpsfield Road. The B269 is the spine that ties the lot together, running down from Sanderstead through the village and on towards Botley Hill. It is fast, it is busy and it has no spare width, so skips and materials go on the plot wherever the drive will carry the weight. If you are further down the hill, our Caterham page covers that side.

Warlingham and CR6

  • Warlingham Green CR6
  • Hamsey Green CR6
  • Tithepit Shaw Lane CR6
  • Limpsfield Road CR6
  • Chelsham CR6
  • Farleigh CR6

Down the hill and along the ridge

  • Whyteleafe CR3
  • Caterham CR3
  • Woldingham CR3
  • Kenley CR8
  • Purley CR8
  • Sanderstead CR2

South and west towards home

  • Tatsfield TN16
  • Oxted RH8
  • Limpsfield RH8
  • Godstone RH9
  • Bletchingley RH1
  • Merstham RH1
  • Redhill RH1
  • Reigate RH2
Tandridge District Council

Green belt, the inset line and the conservation area.

The three things that catch Warlingham homeowners out, and what to do about each of them.

Planning here goes to Tandridge District Council, and Tandridge is one of the most heavily green belt districts in England. Warlingham itself is what the planners call an inset settlement, which means the built up part of the village has been drawn out of the green belt while the countryside around it stays firmly in. That single line on a map changes what is possible. A rear extension inside the village can be assessed on ordinary policy and may not need permission at all. The same extension a few hundred metres east at Chelsham is judged against green belt policy, where the question is whether the addition is proportionate to the original building, and a scheme that looks modest to you can still be refused.

The conservation area at the centre of the village is the second thing. Inside it, everything the street can see carries more weight, so window pattern, roof covering, brick and mortar colour, render, rainwater goods and boundary walls all matter, and permitted development rights are usually reduced. Trees pick up extra protection too, which is worth knowing before anyone starts digging near one. None of it prevents good work. It just means the detailing has to be right first time.

The third is the paperwork nobody thinks about. Covenants written into old deeds are a private matter rather than a planning one and can still stop a scheme. Shared private drives need agreement before a lorry uses them. Party wall notices take two months if a neighbour disputes them, so they are served early rather than late. We do not employ architects. We work alongside your architect, or we can introduce you to architects and designers we have worked with for years, and we hand them the buildability picture at the start so what gets drawn is what can actually be built. A loft conversion that fails on head height is a costly way to learn that lesson.

Recent work

Ground, steel, finish.

Three stages that decide whether a job on this sort of ground goes smoothly or not.

A small red drilling rig investigating the ground alongside a bungalow with boards laid across the lawn
Testing the ground first
A crane lifting a red painted steel beam over the tiled roof of a scaffolded house
Steel going over the roof
A finished bathroom with a glazed shower enclosure, a panelled bath and a wall hung timber vanity unit
The room you actually use
How it runs

From the first visit to the last key.

Four stages, in the same order every time, whether the job is a bathroom or a house.

1

Survey and figure

We come to the house, look at the walls, the roof, the ground and the boundary, and talk through what you want. Then you get a written, itemised quotation with the awkward parts named rather than buried.

2

Drawings and consents

We work alongside your architect or introduce you to designers we trust, agree the buildable version, and see the application through Tandridge along with the structural calculations and the building control notice.

3

Ground and structure

Trial holes, foundations, drainage, then walls, steel and roof until the building is watertight. Inspections are booked at the right stages and we meet the inspector on site ourselves.

4

Fit out and handover

First fix, plaster, joinery, kitchen, bathroom, decoration and floors. We snag it before you ever see a list, walk every room with you, then hand over the certificates and the warranties.

Why us

Why Warlingham homeowners call us back.

Good to know

Warlingham questions.

Is our Warlingham house inside the green belt or outside it?
That one line decides a great deal, so it is the first thing we check. Warlingham is an inset settlement, which means the built up part of the village has been drawn out of the green belt while everything around it stays in. Houses inside the boundary are assessed on ordinary policy. Houses at Chelsham, at Farleigh and along the lanes are washed over by green belt, where an extension is measured against the size of the original building and anything judged disproportionate gets refused. Tandridge District Council publishes the boundary and we look at it with you before a designer is paid for anything.
Do we need planning permission for an extension in Warlingham?
Inside the village, often not. Plots here are deep and houses are well spaced, so a single storey rear extension or a rear dormer on a chalet bungalow can frequently be built under permitted development, which saves both time and money. You lose that shortcut if the house has already been extended, if the property is flatted, if a previous consent removed the rights, or if you are on green belt land at Chelsham or Farleigh. Everything else goes to Tandridge District Council as a full application. We tell you which of the two you are in at the survey rather than after the drawings.
What is the ground like in Warlingham and how does it affect foundations?
Warlingham sits on chalk with a cap of clay and flints over the top, and the depth of that cap varies from one garden to the next. Chalk carries load well and takes water away. Clay swells through a wet winter and shrinks back in a dry summer, and near a mature tree that movement is what sets how deep a foundation has to go. Soakaways can pass easily on one plot and fail a percolation test two roads away. We dig trial holes and take levels before we put a price on the groundworks, so the awkward part is costed rather than discovered.
Our house is near Warlingham Green in the conservation area. What changes?
The rules tighten on anything the street can see. Windows, roof coverings, brick and mortar colour, render, rainwater goods and boundary walls all carry more weight inside a designated area, and permitted development rights are usually reduced as well. Trees get extra protection, which matters on the older plots around the green. None of it stops good work, it simply means the detailing has to be right and the materials have to suit the age of the building. We restore period property regularly, so we will tell you at the survey what is likely to be accepted.
How do you handle deliveries and parking on Limpsfield Road and the lanes?
By planning them rather than hoping. Limpsfield Road is the B269 and it is busy and fast with no spare width, so we book lorries for the quieter part of the day and never leave one standing where it will hold up the traffic. Most Warlingham houses have their own drive, so the skip and the materials sit on the plot wherever the surface will carry the weight. Out at Chelsham and Farleigh the lanes are single track with no pavement, so we use smaller vehicles, keep a passing place clear and let the neighbours know before anything noisy starts.
Which villages around Warlingham do you cover?
All of CR6 and the country either side of it. That means Warlingham Green, Hamsey Green, Chelsham, Farleigh and the roads off Tithepit Shaw Lane and Limpsfield Road, and it also means Whyteleafe, Caterham and Woldingham down the hill in CR3, Kenley and Purley in CR8, Sanderstead in CR2 and Tatsfield in TN16. Over the other side we cover Oxted, Limpsfield, Godstone, Bletchingley and back through Merstham and Redhill to our own office in Reigate. Warlingham is roughly twelve miles from us, so our team is on site early rather than mid morning.
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