Loft conversion specialists covering Bolney and the RH17 villages of the Mid Sussex Weald. We design and build dormer, hip-to-gable, Velux, mansard and L-shape conversions on homes of every age and size, with architectural support built into every project. Contact us for a free, no-obligation quote on your Bolney loft conversion.
Thinking about a loft conversion in Bolney? Apex designs and builds them across this RH17 village in the Weald, north of the Downs and a comfortable run up from our Worthing base. The first practical thing to get right here catches a lot of people out: Bolney is in Mid Sussex, not Horsham. Its Wealden neighbours a few miles west fall to Horsham District Council, but Bolney applications go to Mid Sussex District Council, and homeowners regularly start on the wrong council’s website and work from the wrong set of guidance notes.
The second useful fact is what is not here. Bolney sits well clear of the South Downs National Park, so there is no second planning authority above the district and none of the landscape assessment that applies in the Downs villages. What the village does have is a designated conservation area over the older core around the church. That splits Bolney into two quite different starting positions: inside the conservation area permitted development rights are tighter and external detailing gets a closer look, while the later housing and the properties out along the lanes are in a far more open position, where a rear dormer or a hip-to-gable can often proceed under permitted development.
Which of those two your home falls into is worth establishing before drawings are commissioned. After that the questions are structural: ridge height, how the roof is framed, where the chimney stacks sit, and where a new staircase can land. As local loft conversion builders we run the job as one project rather than a series of trades. Our trusted architectural partners can prepare drawings and, where one is needed, submit a planning application or Lawful Development Certificate on your behalf, and we build to current Building Regulations throughout. We start with a free, no-obligation site visit and tell you straight what your roof can deliver. Contact us for a free quote on your Bolney loft conversion.
The right loft conversion for your Bolney home depends on the shape of the roof, the space you want to gain, and whether your property sits inside the conservation area or outside it. Five conversion types cover almost every project we take on in the village and across the RH17 Weald. The gap between what suits a home near the old core and what suits one on the later streets is wider here than in most places, and we will recommend the right approach after the first visit.
A dormer is built out from the existing roof slope to win standing headroom and floor area where the roof previously ran in. In Bolney the answer depends on which side of the conservation area boundary your home sits. On the later housing a rear dormer will often fall within permitted development, subject to the national limits. Nearer the old core a full application to Mid Sussex District Council is the more likely route, and the dormer’s size, position and detailing will be looked at more closely. We check which applies to your address before any design work starts.
Best suited to hipped-roof semis and detached houses, where the side of the roof runs in at an angle instead of rising to a flat gable wall. Building that side up to a full gable recovers volume the hipped shape gives away, and it pairs naturally with a rear dormer to square off the new floor. Because it changes the outline of the house as seen from the road, it is a more comfortable proposition on the village’s later streets than on a frontage inside the conservation area.
The least invasive of the five and the most reliable route where the roof profile needs to stay exactly as it is, which inside the conservation area it very often does. Nothing is added to the outside: we strengthen the structure, insulate, board the floor and set rooflights into the existing slope for daylight. Planning permission is rarely required for this type of conversion, though conservation-style rooflights are sometimes preferred near the old core, and a listed property will still need listed building consent, which is separate from planning permission.
The most transformative of the five. A mansard rebuilds the rear, and sometimes the front, roof slope to near vertical to produce the greatest floor area and headroom available from a loft. Full planning permission is effectively always required wherever you are, and inside Bolney’s conservation area it is the hardest case of the five to make. It is worth confirming the position with Mid Sussex District Council and a planning consultant before you commit to anything.
Made for homes with a two-storey rear outrigger, the side return, which turn up among the older properties in the village. An L-shape adds a dormer to the main roof and another to the outrigger, giving an L-shaped floor upstairs that will usually take a bedroom and a bathroom rather than forcing a choice between them. It is the sensible step up where a single rear dormer would leave the layout short.
Every Bolney home is different, and the best loft conversion is the one that works with the structure already there. We design around your roof rather than from a standard template, checking ridge height, head height at the wall plate, chimney breast positions and where a new staircase can land before proposing a layout. Where a village holds two very different types of housing, as this one does, that groundwork is what stops a design being borrowed from the wrong sort of house. You will leave the first visit with a clearer view of what your loft can deliver.
Worthing is our base, and Bolney sits towards the northern edge of our regular working area in the Weald. We know the general planning environment across RH17 and the Mid Sussex district, including where the conservation boundary changes the answer and which authority actually deals with an application, which is not always the one people assume. We are also used to working on plots reached off narrow lanes, where access, scaffolding and deliveries need thinking through before the first van arrives. You get a local team on site and consistent standards throughout the build.
Our team and specialist partners work to a finish that stands up to close inspection: plumb walls, flush trims, clean plaster lines and joinery finished properly. That care counts for most on the village’s older homes, where new work has to sit comfortably alongside what is already there rather than announce itself. Everything is built to current Building Regulations, and we coordinate with your Building Control inspector at the relevant stages. Completed projects are shown in the gallery below, and we are happy to talk through details and references at the first visit.
A Bolney loft conversion moves through six stages. Design and any submission to the council run through our trusted architectural partners; the build and the handover are ours. Three things remain legally yours whatever we do: serving Party Wall notices, obtaining listed building consent where the property is listed, and making the Building Control submission. Raise those with a surveyor or architect at the start.
We visit your Bolney home at no cost. We measure up, look at the roof structure, check head heights and ridge clearance, and set out what the space could realistically become. There is no charge and no obligation to take it further.
If drawings already exist we will work from them. If not, our trusted architectural partners can take the design phase on, including layout planning and technical drawings, so the project runs as a single job. A detailed quote and a proposed build programme come with the drawings.
Bolney applications go to Mid Sussex District Council, not Horsham District Council, which is the first thing to get right. For a home inside the conservation area a full application is the more likely route; outside it, a Lawful Development Certificate is often the cleaner option to confirm the work falls within permitted development. Our architectural partners can prepare and submit either on your behalf. We would always recommend confirming the position for your own property directly with the council, and discussing any Party Wall requirements with a surveyor or architect before work starts. Party Wall notices are the homeowner's legal responsibility and cannot be served by the builder.
Construction begins once consents, drawings and structural calculations are in place. Timescales vary with the conversion type and the property, and we set out an indicative programme at quote stage. The opened roof is kept weatherproof throughout, and on the narrower lanes around the village we plan scaffolding and deliveries so that access and parking for neighbours are disrupted as little as possible.
Building Control is appointed by you, through Mid Sussex District Council or an approved inspector of your choosing, and the inspections fall at set points in the build. We work to current Building Regulations and liaise with whoever you appoint so each stage is signed off as it is reached.
Once your inspector has issued the final sign-off, the loft is yours. Keep the completion certificate with the rest of your property paperwork; it is one of the first documents a buyer's solicitor will look for.
A selection of recent loft conversion projects completed around Bolney, the Mid Sussex Weald and the wider Sussex coast, covering a range of conversion types and property ages. If you would like to see examples closer to your own home, get in touch and we will share relevant projects.
The notes below are general context for Bolney homeowners considering a loft conversion and do not constitute legal advice. Always confirm the position for your property with Mid Sussex District Council, and where relevant with an architect, planning consultant or party wall surveyor, before any work starts.
Planning authority. Bolney falls to Mid Sussex District Council, not Horsham District Council, which covers several of the Wealden villages a few miles west.
No National Park layer. The village sits well outside the South Downs National Park, so there is no second authority above the district and no landscape assessment of the kind that applies in the Downs villages.
Conservation area. A designated conservation area covers the older core, where permitted development rights are tighter and external detailing is looked at more closely.
Permitted development. Beyond that core many conversions proceed under permitted development, subject to the national limits and to any Article 4 Direction, with a Lawful Development Certificate worth having for your records.
Listed buildings. Where a property is itself listed, listed building consent applies and is separate from planning permission.
Party wall. On terraced and semi-detached homes, serving any Party Wall notice is the homeowner’s legal responsibility and cannot be done by the builder.
Apex is based in Worthing and covers Bolney along with the surrounding Mid Sussex and Wealden villages, including Cowfold across the district boundary, Hurstpierpoint to the south and Burgess Hill to the east, and on towards Warninglid, Albourne and Twineham. Bolney sits at the northern reach of our working area, and we plan scheduling, deliveries and site coordination around that run so the build stays straightforward throughout.
The first step is a free site visit. We measure up, assess the roof structure and available head height, and talk through realistic options for the space, including whether your address sits inside the conservation area and what that means in practice. From there our trusted architectural partners can take on drawings and any planning submission, and you will want to confirm the planning position directly with Mid Sussex District Council and discuss any 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.
What Bolney homeowners most often want to know before starting a loft conversion. Anything not covered here, put it through the contact form and we will come back to you.
Timescales vary with the conversion type, the size and condition of the property and the consents involved. A rooflight conversion is generally the quickest, with dormer, hip-to-gable, L-shape and mansard builds taking progressively longer. The consent phase is the part that varies most in Bolney: a home outside the conservation area may need nothing more than a Lawful Development Certificate, while one inside it should allow for a full application to Mid Sussex District Council. You also need to allow for architectural drawings and structural calculations either way. We will give you a realistic timeline for our part of the work at quote stage.
It depends chiefly on whether your home sits inside the conservation area over the older core. Inside it, permitted development rights are typically restricted and a full application is more likely, with the external detail assessed closely. Outside it, and Bolney has a good deal of housing that is, many conversions proceed under permitted development, subject to the national rules on volume and position and to any Article 4 Direction. Applications go to Mid Sussex District Council rather than Horsham District Council, which is worth knowing before you start reading guidance. A listed property will also need listed building consent, which is separate from planning permission. Our trusted architectural partners can prepare and submit an application or a Lawful Development Certificate on your behalf. Building Regulations apply to every loft conversion regardless of the planning position.
In most cases, yes. The roof is kept weatherproof from the moment it is opened, and the bulk of the work happens above your existing first-floor ceiling. There will be noise and dust at stages, but most households stay put. Installing the steels and cutting in the new staircase are the two most disruptive points, and we give you notice of both. On a lane-access plot we will also agree where the scaffolding and skip can sit before the start date.
Industry research has long suggested a well-built loft conversion can add meaningful value, though the actual uplift depends on the property, the local market and the quality of the finish. Bolney attracts buyers who want a Wealden village with easy access to the main routes north and south, and in that market an additional bedroom, or a bedroom with an ensuite, is usually what lifts a house into the next bracket. On an older home near the core, a conversion that keeps the roofline quiet tends to hold its value best. For many owners the extra room also removes the immediate pressure to move.
As a general guide you will typically need a floor-to-ridge height of around 2.2 to 2.3 metres for a loft conversion to be viable, measured from the top of the existing ceiling joists to the underside of the ridge. Where that is tight, a dormer or mansard can create the usable room, whereas a rooflight conversion needs the height to be there already. Older village properties can surprise you in either direction, which is why we measure rather than estimate. Head height is among the first things we check at the free site visit, and we will be straight with you about what is achievable before any design work begins.
It comes down to your roof shape, the space you want to gain and how far the external roofline can change. As a broad steer, homes near the older core often suit a rooflight conversion or a carefully judged rear dormer, with an L-shape where there is a two-storey rear outrigger. The hipped-roof semis and detached houses on the later streets tend to suit a hip-to-gable, frequently paired with a rear dormer. A mansard is the most demanding option in planning terms anywhere, and more so inside the conservation area. We will recommend the best fit for your property at the free site visit.
Yes, always. The Building Regulations are separate from planning and apply to every loft conversion regardless of whether an application was needed. They govern the structure, typically steel beams and strengthened joists; fire safety, covering escape routes, fire doors and alarms; the staircase and the headroom over it; and insulation, both thermal and acoustic, between the new rooms and the floor below. Making the submission and booking the inspections is the homeowner’s job, via the council or an approved inspector, and we build to the standards throughout and coordinate with whoever you appoint.
