Extensions in Chappel

Extending in Chappel

A parish of 1,176 acres that falls nearly forty metres from its southern boundary to the river, with a listed viaduct standing over the middle of it.

Chappel sits about six and a half miles west of Colchester where the road drops into the Colne valley and crosses it. The 2021 census put the parish at 530 people. The land runs from over 61 metres near the southern boundary down to around 23 metres at the water, and that fall is the single physical fact that shapes most of the building work here.

The village was a chapelry of Great Tey in the Middle Ages, which is why both parishes have a church of St Barnabas and why Chappel is called what it is. The medieval settlement gathered at the bridge. A second hamlet had appeared by 1810 at the junction of the Tey road and Bacons Lane, and became Swan Street.

The conservation area, and where its boundary actually goes

Chappel’s conservation area is one of the few that crosses a parish boundary and a river, and the district boundary here is not where people guess.

Colchester City Council is the planning authority for Chappel. It is also the authority for Wakes Colne on the far bank. White Colne, two miles up the same road, is Braintree District. We confirm the authority from the address every time, because getting that wrong costs weeks before anything is even validated.

The conservation area is centred on the crossing and takes in buildings on both sides of the water, including the mill and mill house over in Wakes Colne. The viaduct and the church sit inside it, along with the timber framed houses near the bridge that run from the fourteenth to the sixteenth century, and the older commercial buildings on The Street.

Designation makes the land article 2(3) land under the permitted development order. It removes particular rights rather than all of them, and the split is worth knowing before a designer starts drawing.

Two further duties come with designation and neither is about the house. Taking down a boundary wall or gate above a modest height needs conservation area consent. Work to a tree of any size needs six weeks’ written notice to the council, whether or not there is a preservation order on it. Our conservation areas guide sets out how an officer assesses what is left.

The viaduct is a setting question, not just a view

A listed structure 1,136 feet long and up to 80 feet high does not stay in the background of a planning decision.

Peter Bruff’s viaduct was built between 1847 and 1849 for the railway from Colchester up the Stour valley, in 32 brick arches, and it is thought to be among the largest brick structures in England. It is listed, and the effect of development on the setting of a listed building is a statutory consideration in its own right, separate from the conservation area.

In practice that means anything on the valley sides with height to it, a two storey rear extension, a first floor over a garage, a raised roof, is being assessed partly on how it sits in views that contain the viaduct. It does not mean the answer is no. It does mean the design conversation starts earlier and the drawings need to show the wider context rather than just the plot.

The same applies to St Barnabas, which is Grade I. There are more listed buildings per head in this village than in most of the district, so the odds that a neighbouring property is listed are higher here than the odds that yours is.

Building on a slope

Nearly forty metres of fall across a small parish means split levels, retaining and stepped foundations turn up constantly.

A sloping plot changes an extension in several ways at once, and none of them show up on a plan drawing. Foundations step down the slope in bays rather than running level, which uses more concrete than a flat site and takes longer to dig. Ground on the upper side has to be retained, and a retaining structure is designed for the pressure behind it rather than built as a thick wall. Floor levels inside the new work may not match the existing floor, so the junction becomes a step, a ramp or a change of level that has to be designed rather than discovered.

The ground itself changes with the height. Boulder clay sits on the higher ground, London clay and river terrace deposits along the Colne, and alluvial meadow at the bottom on the southern bank. Alluvium is the difficult one: soft, variable, sometimes with a water table close enough that a trench will not stand up long enough to pour concrete into it. Where that is what the trial hole shows, the answer is usually a reinforced trench fill or a piled foundation rather than a deeper strip.

Water, and which kind of water is your problem

The valley bottom has a river issue. The valley sides have a run-off issue, and it is the one people forget.

Chappel sits in the Environment Agency’s flood alert area for the Colne between Great Yeldham and Colchester, and the low lying land at the bridge is what that refers to. If your property is in Flood Zone 2 or 3, a proportionate flood risk assessment can be required for an extension, though the sequential test is not applied to householder work. Our flood zones guide covers where that line falls.

Most of the parish is nowhere near the river, and for those properties the water question is entirely different. Rain landing on a new roof and a new terrace halfway up a forty metre slope goes downhill, and on clay it goes downhill on the surface rather than into the ground. A soakaway sized from a standard table, on clay, at the top of a slope, does very little. Where it cannot be made to work, surface water needs a designed route and sometimes a connection, and that is a decision taken at drawing stage rather than when the patio floods for the first time.

Foul drainage is worth checking early too. Mains drainage only reached the village in 1964, so properties older than that were built to discharge somewhere else, and the pipework under some gardens is not where any surviving drawing says it is. A run shared between two properties is generally a public sewer now, and building over or near it needs a build over agreement from Anglian Water on its own timescale.

The housing, by period

Four distinct groups of house in a village of 530 people, and each one extends differently.

Nearest the bridge are the timber framed buildings, fourteenth to sixteenth century, plastered or weatherboarded, with the whole set of old-building constraints: no cavity, no damp proof course, frames that move, and a need for lime and breathable materials rather than cement and membranes.

Then the Victorian villas that came with the railway, which are brick, solid walled, with deeper plans and higher ceilings than the cottages, and generally the easiest of the older stock to extend at the back.

Council housing arrived in 1954 and the Swan Gardens estate followed in 1972. That post-war stock is where most of the extension work in the parish happens: cavity brickwork, gardens with room in them, side access on a fair proportion, and on the 1972 houses trussed rafter roofs that cannot simply have their middle removed for a loft conversion.

Finally the farmhouses and converted agricultural buildings out on the lanes, where a conversion’s original decision notice often carries a condition removing permitted development rights for anything further.

What people build here

Ground floor space at the back, and rooms won from the slope rather than added above it.

The most common brief is a single storey rear extension making one room out of a kitchen and a dining room, which is still permitted development inside the conservation area within the reduced limits that apply on designated land. On the post-war stock that is a straightforward job. On the older buildings it works better set slightly apart from the original in form and material, because a modern addition that is honest about being modern is generally an easier argument here than a copy of a sixteenth century elevation that never quite convinces anybody.

The second, and it is more common in Chappel than in flatter villages, is using the fall of the ground. Where a house sits above its garden, a lower ground floor room dug into the slope on the garden side gives full height space with proper daylight on one elevation, and it changes the outside of the building far less than a comparable extension at the back would. It is not a cheap way to get a room, but on a plot where an ordinary extension would dominate a view towards the viaduct, it is sometimes the only proposal that works.

Third are garden buildings and detached annexes on the larger plots up the lanes, where plot depth is not the constraint it is nearer the bridge.

Access, the crossing and the level crossing

Everything arriving at a Chappel site comes through a pinch point.

The A1124 drops into the valley, crosses the river and climbs out again, and it carries traffic between the A12 and Halstead. The bridge, the bends and the level crossing by the station all limit what can be delivered and when. Lanes off the main road are single track with soft verges.

The consequence is scheduling rather than cost, provided somebody has thought about it: smaller loads, a grab lorry rather than a tipper for muck away, materials stored on the plot, deliveries kept out of school and commuter traffic. On a sloping plot with a narrow frontage, where the muck goes and where the materials sit is a real design question and not an afterthought.

Questions we get asked in Chappel

Which council decides my application?

Colchester City Council, for Chappel and for Wakes Colne across the river. White Colne, two miles west, is Braintree District. It is confirmed from the address.

Can I put a dormer in?

Not as permitted development inside the conservation area, because the class covering roof enlargement is excluded on designated land. It becomes a planning application, and the design has to answer for itself. A rooflight sitting in the plane of the slope is a different matter and that right survives.

Will the viaduct stop my extension?

No, but its setting is a consideration for anything with height on the valley sides, and the drawings are expected to show the wider view rather than just your plot.

My plot slopes badly. Is it much more expensive?

Usually somewhat, and the cost sits in groundworks rather than in the visible building: stepped foundations, retaining, and getting plant and materials to the working level.

Getting a price for a Chappel extension

We are based at West Bergholt, a few miles east down the same valley, so this is home ground rather than a postcode on a coverage list.

Our team surveys the property properly: the fall across the plot, the ground at the level you will actually be founding at, the trees, the drain runs, the frame if there is one, and the designation position on your specific address. Most people who call us already have drawings and permission and want a builder to price the work and build it. That is the ordinary job here, and we are glad to work to somebody else’s plans. Where the drawings do not exist yet, we bring in the technician who draws it and the structural engineer we work with to calculate it, we manage the application with Colchester City Council, we notify Building Control, and we run the job as main contractor.

We carry £2m public liability cover and everything is built to current Building Regulations, through to your completion certificate. The survey and the quotation cost nothing.