Extensions in Tollesbury

Extending in Tollesbury

Nearly three thousand people at the end of a road that goes nowhere else, in a village where the traditional wall finish is a painted board and the designation has an opinion about it.

Tollesbury sits on the north shore of the Blackwater, where the estuary widens out towards Mersea and the open sea. At the 2021 census the parish held 2,810 people, which makes it one of the larger villages on this coast and a good deal bigger than the places it usually gets grouped with. The B1023 comes down from Tolleshunt D’Arcy, arrives at The Square, and stops. There is no route through and no second way out.

Maldon District Council is the planning authority, working from the offices on Princes Road in Maldon. Worth saying plainly, because Tollesbury is closer to Colchester by road and by shopping habit, and a fair amount of the advice people arrive with was written for Colchester City Council, which runs a different local plan and a different validation checklist. An application sent to the wrong authority does not get refused. It simply never starts.

Two villages under one name

A small weatherboarded core, and a much larger twentieth century village wrapped around it. Almost everything about a job depends on which of the two you are in.

The old village is tight and low. Timber framed and weatherboarded cottages, colourwashed brick, slate and pantile, gathered round The Square and the church of St Mary the Virgin, which is late eleventh century in origin. The eighteenth century village lock-up is still standing. Plots in that core are narrow, some frontages come straight out to the pavement, and rear gardens are short.

Everything else is newer, and there is a lot of it. Tollesbury grew right through the twentieth century: interwar pairs, post-war council-built terraces and semis, private development from the 1960s to the 1980s, and infill since. Those houses have what the old core does not, which is cavity walls, a driveway, a side gate and a garden with room in it. Most of them also sit outside the conservation area boundary, and that changes the planning route completely.

Down at Woodrolfe the character shifts again. The marina, the hard and the weatherboarded sail lofts standing on their legs above the mud are what most people picture when they think of this village, and they are why a painted board reads here as the right material rather than as a modern cladding choice.

The conservation area, and the board on the wall

Tollesbury was designated in January 1970, which makes it one of the district’s earliest, and the restriction that bites hardest is the one about cladding.

Designation makes a property article 2(3) land. Three things follow for a householder, and the third is the one nobody expects.

• Class A stops permitting a side extension, and stops permitting a two storey rear extension. Both become full applications. The larger single storey rear extension route that runs on prior approval is not available on this land either.
• Class B stops permitting an enlargement of the roof, so a rear dormer needs permission. Class C is a separate matter and carries no such exclusion, so a rooflight sitting in the plane of the existing slope stays permitted development, front slope included, provided it projects no more than 150mm beyond the plane of the original roof measured perpendicular and sits no higher than the highest part of that roof. A roof window in a side elevation has to be obscure glazed and non-opening below 1.7m, and that condition applies everywhere, designated or not.
• Class A stops permitting cladding. On this land you may not clad any part of the exterior in stone, artificial stone, pebble dash, render, timber, plastic or tiles without an application. In a village whose defining material is a painted weatherboard, that is not a technicality. Boarding a new extension so it matches the cottage it is attached to needs permission inside the boundary and does not need it outside.

None of this stops you extending. It changes who decides and how long the front end takes. What an officer weighs is whether the proposal preserves or enhances the character of the area, and in Tollesbury character means proportion, board width, the colour it is painted, and whether the roof pitch belongs on the street. Our guide to extending in a conservation area sets out what survives the designation.

No Article 4 direction is recorded over the village, and it costs nothing to have the council confirm that against your address. The boundary does not follow the obvious lines, so we check the designation on the property rather than reading it off the postcode.

Wind, salt and the timber

Exposure here is a specification question rather than a design one, and it lands on the fixings.

Tollesbury faces open water across a wide estuary with flat marsh in front of it, so there is nothing between a south easterly and the back of your house. Two consequences follow.

The first is wind uplift on the roof. An exposed coastal site carries higher design wind loads than a sheltered inland one, and the answer is mechanical fixing rather than mortar: tiles clipped or nailed to the exposure schedule, dry fixed ridge and verge instead of bedded, and the roof structure strapped down at wall plate level. Ordinary work, correctly specified. It is also the first thing missing from a price written by somebody who normally builds twenty miles inland.

The second is the boarding. Timber cladding on a salt laden elevation lives or dies on what holds it up, and the fixings and battens fail long before the boards do, so stainless rather than galvanised is the sensible call, with a drained and ventilated cavity behind so that whatever gets past the face can get out again. Painted softwood carries a maintenance cycle. That is a fair trade rather than a hidden cost, and it belongs in the conversation at the start instead of in year six.

The sea wall, and what the flood map is really showing

The most misread document in this village is the Environment Agency flood map, because it deliberately ignores the wall.

Flood zones 2 and 3 are drawn on the basis that flood defences are not there. That is the point of the mapping rather than an oversight in it: the consequence of a defence being overtopped or breached has to be visible rather than hidden behind the defence. The practical effect at Tollesbury is that a house behind a maintained sea wall, on ground nobody alive has seen under water, can still sit inside flood zone 3.

What that means for an extension is smaller than people fear. The sequential test, which steers new development towards lower risk land, does not apply to householder development, because the house is already where it is and there is nowhere to steer it to. What is required in flood zone 2 or 3 is a site specific flood risk assessment, and for a domestic extension that is a proportionate document rather than a modelling exercise. It settles the finished floor level, whether construction below a stated level needs to be flood resilient, and how people get out. Our guide to flood zones and extensions in Essex takes the assessment apart properly.

What is under the village

London Clay on the higher ground, soft alluvium towards the marsh, and one linear feature people forget about.

The built up part of Tollesbury stands on slightly rising ground of London Clay, with marsh alluvium along the creeks and out towards Tollesbury Wick. Clay shrinks through a dry summer and swells back through a wet winter, and where a mature tree is drawing water out of it the movement runs deeper and unevenly. Alluvium does something else entirely: soft, variable in depth, laid down without pressure, so it settles under load rather than moving with the seasons.

Depth is therefore a plot answer rather than a village answer. A trench fill footing at 900mm is right in parts of Tollesbury and nowhere near enough in others, and a trial hole at survey stage is how you find out. The mechanics are in our guide to extension foundations.

The linear feature is the old railway. The Kelvedon and Tollesbury Light Railway ran into the village from 1904 until the passenger service finished in 1951, and a disused line leaves embankment and cutting behind it. Made ground is fill: it was placed rather than deposited, its depth is not uniform, and it will not carry a foundation load predictably. Where a plot sits on or beside the old trackbed, that is worth establishing before the design is fixed rather than after the digger has found it.

One road in, the same road out

There is no alternative route to Tollesbury, and every delivery on your job is subject to that.

Nothing passes through, so the lanes stay quiet and a job does not have to fight traffic. The cost is that there is no diversion. A burst main, a fallen tree or a lorry across the B1023 does not delay a delivery, it cancels it, and a ready mixed concrete wagon that cannot reach the site is a lost pour rather than a late one, because concrete has a working life of a couple of hours from batching.

Within the village the two halves differ again. Round The Square the frontages are close, parking is on the street, and there is frequently nowhere to stand a skip except the highway, which means a permit and a booked exchange. On the post-war estates there is a drive, a side gate and room to stack material off the road. That is why two Tollesbury houses of the same size can be honestly priced differently.

What people build here

The estate houses and the cottages want opposite things, and both are achievable.

On the twentieth century stock, which is most of the village, the common work is the ordinary work done properly. A single storey rear extension produces a kitchen the family can eat in. A garage conversion follows where the garage has held bicycles for fifteen years, and a loft conversion where the roof structure will take one. Plots are wide and gardens are generous by suburban standards, so building out is usually easier than building up, and it sidesteps the argument about roof form altogether.

In the old core the brief is nearly always the same: open a small, cellular ground floor into one room with light in it. Low ceilings and modest window openings mean roof glazing earns its place more than a wider set of doors would, and the structural question is what the existing wall and whatever is under it will carry once a chunk comes out. That is work for the structural engineer we bring in rather than for a rule of thumb, and our page on structural openings explains how the beam and its bearings get settled.

Garden rooms and home offices come up constantly, helped by plot size and by how far it is to a railway station.

Questions we get asked in Tollesbury

Am I dealing with Colchester or Maldon?

Maldon District Council. The village sits in Maldon District even though Colchester is the nearer town for almost everything else, and the application goes to Princes Road.

Can I board the extension to match the house?

Outside the conservation area, cladding is generally permitted development within the Class A conditions. Inside it, timber cladding is expressly not permitted and needs an application. Boarding that suits the building is usually the design an officer wants to see, but it is a process rather than a formality and it takes weeks.

We are behind the sea wall. Are we in a flood zone?

Quite possibly, because the map is drawn as though the wall were not there. It does not stop you extending. It means a proportionate flood risk assessment and a decision about finished floor level made at design stage rather than on site.

Is there a coastal charge on an extension?

No. The Essex Coast RAMS tariff is levied on net new dwellings, not on enlarging a house you already own.

Getting a price for a Tollesbury extension

We are based at West Bergholt on the far side of Colchester, and this end of the Blackwater is a run we make regularly rather than a postcode on a coverage list. The next village along the shore works differently again, and you can read why in extensions in Goldhanger.

Our team comes out and looks at the ground, the exposure, the boarding, the access for deliveries, the flood position and where the conservation area boundary actually falls, then tells you what the job depends on before telling you what it costs. 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, we handle the planning route with Maldon District Council, we notify Building Control, and we run the job as main contractor.

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