Loft conversions designed and built across Henfield and BN5. Dormer, hip-to-gable, Velux, mansard and L-shape, with in-house architectural support and your conservation area position confirmed before anything goes on paper. Free, no-obligation quotes on every enquiry.
Thinking about a loft conversion in Henfield? There is one local quirk worth knowing before you plan anything. Most people picture a conservation area as a small pocket around the church, covering a handful of old buildings. Henfield’s is drawn generously, and it takes in a good deal of ordinary housing on ordinary residential roads. So the assumption that catches people out here is not that their house is too old to convert. It is that their house looks unremarkable enough for permitted development to apply, when in fact the map says otherwise.
That is worth ten minutes at the start rather than a wasted design later. If your address falls inside, permitted development rights are usually tighter and a full application to Horsham District Council is the likely route, with the size, position and materials of a dormer looked at properly. If it falls outside, a conversion here runs like anywhere else in the district. We check which side of the line you are on at the first visit, before we start suggesting what to build.
Working across Henfield and the surrounding BN5 area, we take a joined-up approach from the first drawing to the finished room. Our in-house architectural support covers layout planning, structural coordination and technical drawings, and can prepare and submit a planning application or Lawful Development Certificate where one is needed. We build to current Building Regulations throughout. Contact us for a free, no-obligation quote.
Which conversion suits a Henfield home depends on the roof you are starting with, how much of the new floor clears usable head height, and whether your address sits inside the conservation area. Five types come up across BN5. That last point does more to narrow the list here than it does in most villages, which is why we settle it first.
The type that returns the most usable floor area, and the one most affected by where you are in Henfield. A dormer projects out from the roof slope to give a flat ceiling and standing room across a useful width. Outside the conservation area a rear dormer may fall within permitted development. Inside it, the same dormer is likely to need a full application and will be judged on proportion, position and materials rather than simply on whether it fits the roof. Both routes are perfectly workable, but they are not the same job to get approved.
Suited to hipped roofs, where the side of the roof slopes inward instead of rising to a flat wall, which is common across Henfield’s later residential roads. Rebuilding that slope to a full gable recovers the volume the hip takes away and frequently turns a marginal roof into a viable one. It changes the shape of the house seen from the side, so it is a much easier proposition outside the conservation area than within it. It pairs often with a rear dormer to square off the new floor.
The lightest touch of the five, and a genuinely useful option in Henfield precisely because so much of the village sits inside the conservation area. Nothing outside changes beyond the plane of the glazing: we strengthen the structure, insulate, board the floor out and fit rooflights for daylight. It is the quickest route and the least likely to need permission. The trade-off is that it only works where the head height is already there, since it borrows the space rather than creating it.
The biggest change of the five, rebuilding a roof slope to near vertical for maximum floor area and headroom across the footprint. Full planning permission is almost always required and the appearance of the house changes substantially. Given how much of Henfield falls inside the conservation area, this is the type most likely to run into difficulty here, so it suits the larger properties on the outer roads. Worth testing with Horsham District Council and a planning consultant before design time goes into it.
Works where the house has a two-storey rear projection to build onto, with a dormer added to both that projection and the main roof to form an L-shaped upstairs. It delivers more than a standard dormer without the planning weight of a mansard. Whether a Henfield house has that projection varies a great deal from one road to the next, so it is among the first things we look for when we walk round.
The best conversion is the one your roof and your planning position will both support, so we design around the house rather than from a template. In Henfield that means establishing the conservation area position before anything else, because it decides how much choice you actually have. From there we get precise about the two numbers that matter: the head height you will genuinely stand up in once the new floor and roof lining are in, and the run a staircase needs to land properly. You leave the first visit knowing where you stand on both.
We are based in Worthing and work regularly up through the Adur valley, so a site visit or a call-out mid-build in Henfield is easy to arrange. We know the general planning picture under Horsham District Council, which is the sole planning authority for the village, and we are familiar with how much of Henfield the conservation area actually covers. You get a local team on site, the same standards from first day to last, and a crew that treats your home as somewhere people are living.
Our team and specialist partners work to a finish that stands up to close inspection: level floors, plumb walls, clean plaster lines and well-fitted joinery. Where a conversion changes the outside of a house inside a conservation area, the detailing is the part that decides whether it looks right, and it is also the part a planning officer will have had something to say about. All work is carried out to current Building Regulations and we coordinate with your Building Control inspector at the relevant stages. Recent projects are shown in the gallery below.
There are six stages between our first visit to your Henfield home and the day you get the room. Our in-house architectural support takes the design and any application; we take the build. Three things stay in your name and we flag them early rather than late: Party Wall notices, appointing Building Control, and listed building consent if it applies. A surveyor, architect or the council is the right first call on each.
We come to your Henfield home, measure floor to ridge, look at the roof structure and work out where a staircase could land. We also check your address against the conservation area boundary, which in this village is the single most useful thing we can establish on day one. You get an honest view of what the space can deliver before anyone talks about design. No cost, no obligation.
If you already have drawings we will price against them. If not, our in-house architectural support takes the design on, producing the layout and the technical drawings an application or certificate needs. Inside the conservation area the drawings carry more detail, because the proportions and materials are what the application turns on. A detailed quote and outline programme arrive alongside the drawings.
Where a planning application or Lawful Development Certificate is needed, our architectural partners can prepare and submit it to Horsham District Council on your behalf. Horsham is the sole planning authority here, so there is no second body to satisfy, which keeps the route simpler than in villages that straddle a boundary. Confirm the position for your own address with the council, and talk to a surveyor or architect about Party Wall requirements before work starts, since those notices are the homeowner's legal responsibility.
Site work follows once consents, drawings and structural calculations are all agreed. How long it takes depends on which conversion you are having and on the house, and an indicative programme comes with your quote. We keep the roof weatherproof for as long as it is open. Towards the lower-lying ground near the river we think about scaffold footings, deliveries and where a skip can sit, which matters more through the wetter part of the year.
Booking Building Control is yours to do, either through the district team or an approved inspector of your choosing. What we owe you is a build that meets current regulations and enough notice at each stage that the inspector sees the work before it is covered up.
The room is handed over once the final inspection has passed. Store the completion certificate with the deeds and the rest of your property paperwork, along with any planning documents, because it will be asked for when you come to sell.
Projects we have finished across West Sussex, taking in a spread of roof types, house sizes and conversion styles. Say what yours is like and we will find you something comparable.
The notes below are general context for Henfield homeowners considering a loft conversion and do not constitute legal advice. Always confirm the position for your property with Horsham District Council, and where relevant with an architect, planning consultant or party wall surveyor, before any work starts.
Planning authority. Horsham District Council is the sole planning authority here, and the village sits well outside the South Downs National Park.
Conservation area. Henfield’s is drawn generously and takes in a good deal of ordinary residential housing, not just the historic core, so check your address against the map early.
Permitted development. Outside that boundary many conversions proceed under permitted development, subject to the usual limits and to any Article 4 Direction. Inside it, expect a full application.
Listed buildings. These cluster around the older heart of the village. Listed building consent is separate from, and additional to, planning permission.
River Adur flood risk. Low ground towards the river falls within Environment Agency flood zones, which bears on ground works and access rather than on a loft.
Party wall. On semi-detached and terraced homes, serving any Party Wall notice is the homeowner’s legal responsibility and cannot be done by the builder.
Apex works across Henfield and the surrounding Adur valley villages, with Steyning, Bramber, Upper Beeding and Storrington inside the same run, so arranging a visit is straightforward and the build keeps its pace once it starts.
The first step is a free site visit. We measure up, assess the roof structure and head height, and check your address against the conservation area boundary, which in Henfield is what decides how much choice you have. From there our in-house architectural support can take on the drawings and any application, and you will want to confirm the planning position for your address directly with Horsham District Council and discuss Party Wall requirements with a surveyor or architect before the build starts.
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.
The things Henfield homeowners most often want to know. If your question is missing, drop it into the contact form.
It depends on the conversion type, the size and condition of the property, and the consents involved. Rooflight conversions are usually quickest, with dormer, hip-to-gable, L-shape and mansard builds taking progressively longer. In Henfield the variable that moves the overall timeline most is whether a full application is needed, and given how much of the village sits inside the conservation area that is more often the case here than elsewhere. We give you an indicative programme for our part of the work at quote stage, and your architect or planning consultant is best placed to estimate the design and consent phase.
More often than people expect, and the reason is the conservation area rather than the age of the houses. Henfield’s conservation area is drawn generously and covers a good deal of ordinary residential housing, so plenty of homes that look like straightforward permitted development cases are not. Inside it, permitted development rights are usually tighter, a full application to Horsham District Council is the likely route, and dormer proportion, position and materials get real scrutiny. Outside it, many conversions fall within permitted development, subject to the national limits on volume, position and window design and to any Article 4 Direction. A mansard or a raised roof normally needs permission wherever it is. Horsham is the sole planning authority here, so there is only one body to deal with. Building Regulations apply either way and are separate from planning.
Usually, yes. The roof is kept weatherproof once it is opened and most of the work happens above the existing ceiling. Expect noise and dust at points, particularly during steel installation and when the staircase is cut in. We flag both stages in advance so you can plan around them, and on the narrower village roads we agree delivery and scaffold arrangements with you before anything arrives.
A well-built conversion has long been regarded as one of the better returns among home improvements, though the actual figure depends on the property, the quality of the finish and the local market at the time. Henfield is a village people settle in rather than pass through, so the usual motivation is practical: another bedroom, or a bedroom with an en suite, instead of taking on the cost and upheaval of moving. Inside the conservation area a sympathetically designed conversion tends to sit better with buyers than a maximised one, so it is worth taking an estate agent’s view alongside ours.
Around 2.2 to 2.3 metres is the figure to aim for, taken from the top of the existing ceiling joists to the underside of the ridge before anything is built, because the new floor and the roof lining will each take a share. Where it falls short, a dormer can manufacture the height whereas rooflights can only borrow it. That is worth knowing early in Henfield, since a dormer is also the option most likely to need a full application. We check it on the first visit.
As a broad steer: inside the conservation area, rooflights are the smoothest route and a well-proportioned rear dormer the next step where the position allows it. On the later housing outside it, a hipped roof often suits a hip-to-gable paired with a rear dormer, and a house that already has a gable end may need only the dormer. Where there is a two-storey rear projection, an L-shape is worth considering. Because the conservation area reaches further than most people assume, we would rather confirm your position before recommending anything.
Yes, without exception, and independently of whether planning permission is needed. Building Regulations govern structural stability, which usually brings in steel beams and strengthened floor joists; fire safety, including escape routes, fire doors and alarms; the design and headroom of the staircase; thermal insulation; and sound separation between the new space and the rooms below. They bite in exactly the same way inside the conservation area as outside it, because they are concerned with how a building performs rather than how it looks. You appoint Building Control and book the inspections; we build to the standards and work with whoever you appoint.
