Apex builds loft conversions in Warningcamp and the BN18 villages east of Arundel, inside the South Downs National Park. Rooflight schemes, dormers, hip-to-gables, mansards and L-shapes, surveyed, designed and built by one team, with architectural partners for drawings and any application. Free, no-obligation site visit.
Thinking about a loft conversion in Warningcamp? Apex designs and builds them here and across BN18, working east from our Worthing base along the coast and then up the Arun valley. The first thing homeowners in a small designated place tend to ask is whether their address falls inside the conservation area. In Warningcamp that turns out to be the wrong question to open with, at least where the roof is concerned, and knowing why saves a good deal of guesswork.
Every address in the hamlet sits inside the South Downs National Park, which makes the National Park Authority the planning authority here rather than Arun District Council. It also puts the whole place on what the permitted development legislation calls article 2(3) land, and on that land the right to extend a roof is withdrawn. So a dormer is a planning application in Warningcamp at every address, whether or not the property falls within the conservation area drawn over the old core. The one route left inside permitted development is the rooflight conversion, which stays within the existing slope and is not caught by the same exclusion.
That changes what the first visit is for. With the planning route fixed by the designation rather than by your address, the real variable is the roof, and specifically how much height is already under it. A rooflight conversion cannot create headroom the way a dormer can, so where the ridge is generous you get a proper room and stay inside permitted development. Where it is tight, you are into a full application whether you would have chosen one or not, and the National Park Authority will assess it against the Park’s landscape and heritage policies. We take that measurement on the free visit and tell you which of the two you are looking at before anyone commissions drawings. Our trusted architectural partners then handle the design and any submission, and we build to current Building Regulations throughout. Contact us for a free quote on your Warningcamp loft conversion.
The shortlist here is shorter than it is elsewhere, and it is the designation that shortens it rather than the housing. Anything that adds to the roof needs permission. Anything that stays within the existing slope may not. That does not rule the larger conversions out, it simply means they begin with an application rather than ending in one. Below is what each of the five involves and where it fits in a hamlet inside the National Park.
A dormer projects out from the roof slope to create standing headroom and real floor area, and nearly everywhere else in our patch it is the conversion that delivers most for the money. In Warningcamp it is a planning application from the outset, because the National Park designation removes the permitted development right to extend a roof. That is not a refusal, and dormers do get consented inside the Park. It means the design has to earn it, usually by staying modest, keeping off the most exposed elevation and using materials that sit quietly against the existing roof.
Where the side of the roof slopes inward rather than rising to a vertical wall, building it up to a full gable recovers the volume the hip takes away. It alters the outline of the house more than a dormer does, so in a designated landscape it has to be argued carefully, and it is a planning application here for exactly the same reason a dormer is. Where the roof form and the surroundings allow it, the gain in usable width is the largest of any of the five.
The one route in Warningcamp that can still be permitted development. The roof shape is untouched: we strengthen the structure, insulate, put down a new floor and set rooflights into the existing slope. Because nothing extends beyond that slope by more than a slight amount and nothing rises above the ridge, the exclusion that catches dormers does not apply. It relies entirely on the height already being in the roof, which is why we measure before recommending it, and conservation rooflights that sit close to flush are usually the right specification in a setting like this.
The most substantial of the five, rebuilding a roof slope to something near vertical for maximum floor and headroom. It needs full planning permission everywhere in the country, so the National Park adds no extra hurdle in that particular sense, but it is by some distance the hardest of the five to justify in a small designated hamlet. We would rarely put it forward here. Where a property genuinely needs that volume we will look at it properly and be straight with you about the likelihood.
For a house with a two-storey wing off the back, dormers on both roofs can be linked at the corner into a single L-shaped floor. It yields more area than any other dormer-based scheme and, like everything else that adds to the roof, it starts as an application here. Few properties in the hamlet have the footprint for it, but where one does it is worth putting on the table alongside the rooflight option so you can weigh the extra room against the extra process.
The survey here does a specific job. Because the planning route is decided by the designation rather than by the address, what we are really establishing is whether the roof will give you a usable room without being extended. That means height at the ridge, height where the roof meets the wall, how the roof is framed, where the chimney sits and where a staircase can land. If the answer is yes, you have a scheme that stays inside permitted development. If it is no, you hear that too, along with what the application route would realistically involve, rather than finding out once the drawings are paid for.
We are based in Worthing and work the Arun valley regularly, villages inside the National Park included, so dealing with the South Downs National Park Authority rather than a district council is routine for us rather than unfamiliar territory. We know what the Authority looks for on a roof alteration, and we know the practical side of working on a small site reached by a single approach, where scaffold and deliveries get planned rather than improvised. The team that surveys the roof is the team that builds it, and you talk to us throughout.
In a setting like this the outside of the job is under more scrutiny than usual, so we detail the parts that show as carefully as the parts that do not: clean flashings, tidy verges, rooflights set properly into the slope rather than sitting on top of it, and junctions between new work and old roof that still look right after a few winters. Inside, level floors, flat plaster and joinery that keeps working are the standard. Insulation and airtightness are drawn rather than improvised. Everything is built to current Building Regulations and we work alongside your Building Control inspector at each stage needing sign-off. Recent work is in the gallery below.
Six stages, from the first survey to handover. The order matters more here than in an undesignated village, because the measurement taken in stage one decides whether stage three is a formality or a full application. Apex does the survey, the build and the coordination; our trusted architectural partners do the drawings and any submission to the National Park Authority. Three duties are yours by law and cannot be handed to a builder: Party Wall notices, listed building consent where the property is listed, and the Building Control submission.
We measure the roof, assess the structure and establish the head height both at the ridge and where the roof meets the wall. In Warningcamp that measurement is what determines whether a rooflight scheme will give you a usable room, and therefore whether the project needs a planning application at all. No charge and no obligation.
We can price against drawings you already hold. If there are none, our trusted architectural partners can prepare them, and in a National Park it is worth having them produced by someone who has dealt with the Authority before. A written quote and an indicative programme come with the drawings.
Applications for Warningcamp go to the South Downs National Park Authority, not to Arun District Council, which is the detail people most often get wrong. A rooflight conversion kept within the existing slope can usually proceed as permitted development. Anything that extends the roof, whether dormer, hip-to-gable or L-shape, needs full permission, because the whole hamlet is designated land. Several properties here are listed, and listed building consent is a separate requirement on top of planning. Our architectural partners can prepare and submit what is needed, we would always suggest confirming your own position with the Authority, and Party Wall notices stay your responsibility.
We start once drawings, consents and structural calculations are all in place. The duration depends on the scheme and on the house, and the quote carries an indicative programme. The roof is kept weatherproof from the moment it is opened. Access here needs thinking about ahead of time, so scaffold, deliveries and skip arrangements are fixed with you before work begins.
This one is the homeowner's appointment. Pick the council's building control service or a private approved inspector, whichever suits, and book the visits through them. Nothing about the National Park changes this part, and a rooflight scheme is caught by it just as fully as a dormer. We build to the current Regulations and time the work around the visits.
After the final sign-off the room is yours. Keep the completion certificate and the approved drawings with the property papers, together with any planning decision from the National Park Authority, since those are the documents that get asked for when the house is eventually sold.
Conversions completed around Warningcamp, through the Arun valley villages and out across West Sussex, from rooflight schemes in designated settings to full dormer and hip-to-gable builds elsewhere. Ask for the projects closest to your own house and we will send those over.
Orientation for Warningcamp homeowners, not legal advice. Check the position for a particular address with the South Downs National Park Authority before booking any work.
Planning authority. The South Downs National Park Authority, not Arun District Council. The hamlet is inside the Park throughout.
Permitted development. National Park land is designated land, so the right to extend a roof is withdrawn. Dormers and hip-to-gables need full permission. Rooflight work within the existing slope is not caught by that exclusion.
Conservation area. There is one over the core, held by the Park Authority rather than by Arun. It does not change the position above, which already applies everywhere here, but it does bring trees and demolition under control.
Listed properties. There are a fair number for so small a settlement, and where a house is listed the consent to alter it runs alongside planning rather than inside it.
Low ground. The valley floor to the west carries flood zones, which bears on the approach and on ground works rather than on the loft.
Party wall. Where a wall is shared with a neighbour, the notice comes from you as the owner, not from us as the builder.
Apex covers the Arun valley from Worthing, and Warningcamp sits well inside that range. Across the river, loft conversions in Arundel covers a town split between two planning authorities, which is a useful contrast with the position here. Upstream, Burpham is another Park village, but there the designation runs across the whole settlement. South towards the coast we also cover Poling, Lyminster and Angmering, all of them outside the Park and under Arun District Council.
Start with the free site visit. We measure the roof, work out whether a rooflight scheme will give you the room you actually want, and set out what an application would involve if it will not. Our trusted architectural partners take the drawings and any submission on from there. Confirm your own position with the National Park Authority before anything is committed.
Apex works on loft conversions across Worthing, Brighton & Hove and the wider West Sussex coast. The pages below give a closer look at
the housing, planning and conversion types we see in each area. If your town or village isn’t listed, we likely still cover it, get in
touch for a quick check.
Common ground covered before a Warningcamp conversion gets under way. Anything else on your mind, the contact form reaches us directly.
The build itself depends on the scheme, with rooflight conversions at the fast end and anything that rebuilds the roof at the slow one. In Warningcamp the bigger variable is what has to happen first. A rooflight scheme can usually proceed as permitted development, so the programme is essentially the build. A dormer needs full permission from the South Downs National Park Authority, which adds a design and decision period before anything happens on site. The free visit establishes which of the two you are looking at, and we quote a programme covering both parts rather than just the construction.
For a dormer, a hip-to-gable or an L-shape, yes. Warningcamp lies entirely within the South Downs National Park, which counts as designated land under the permitted development legislation, and on designated land the right to add to a roof is removed. That applies at every address in the hamlet, not only inside the conservation area over the core, which is the part most people get wrong. A rooflight conversion that stays within the existing roof slope is treated differently and can normally go ahead without an application. If the property is listed, listed building consent is required on top of anything else, and applications go to the Park Authority rather than to Arun District Council.
In most cases yes. The roof stays weatherproof from the point it is opened and the bulk of the work is above your existing ceilings. Expect a small number of loud days, particularly when the structural steels are installed and when the stair opening is formed, and we will tell you when those are coming. A rooflight conversion, which is the common route in Warningcamp, is the least intrusive of the lot, since the outside of the house barely changes and the scaffold requirement is lighter.
Loft conversions are among the more reliable home improvements for return, though the figure for any one property depends on the house, the market and the quality of the work. In a small Park hamlet the calculation is usually different anyway. Properties here do not come up often and building outward is heavily constrained, so what most owners are actually after is a third or fourth bedroom in a house they intend to stay in. When a sale does come, a clean paper trail matters more than usual: a planning decision from the Park Authority where one was needed, or clear evidence that the scheme was permitted development where it was not.
The working figure is about 2.2 metres from the top of the existing ceiling joists to the underside of the ridge, because the new floor structure and the insulation both eat into it before the room becomes usable. That figure matters more in Warningcamp than it does in most places. A dormer can create height where there is not enough of it, but a dormer here is a planning application, so a roof that falls short does not simply cost you headroom, it changes the route you are on. We check the height at the survey and it is the single most useful measurement we take.
In Warningcamp the honest answer starts with the rooflight conversion, because it is the only one that avoids a planning application and because it works well wherever the ridge is high enough. If the height is not there, a rear dormer is the likeliest recommendation, designed to sit modestly on the roof so it stands a proper chance with the Park Authority. A hip-to-gable comes into play where the side of the roof slopes in and the extra width genuinely changes what the room can be. An L-shape suits the few houses with a two-storey rear wing. A mansard is very rarely the right answer here. We confirm it once we have seen inside the roof.
Every conversion does, and the Building Regulations run on a completely different track from the planning system. Worth stressing here, because the rooflight route that suits so many Warningcamp roofs escapes the planning application, and people occasionally take that to mean it escapes approval altogether. It does not. The Regulations deal with structural stability, usually steel beams and strengthened joists; with fire safety, meaning a protected escape route, fire doors and interlinked alarms; with the staircase and the headroom above it; with insulation; and with sound separation from the rooms below. The submission is yours to make, along with booking the inspections, either through the local authority service or an approved inspector you choose. We build to the standard and work to the inspector’s schedule.
