Loft conversion specialists working in Offington and across BN14. Dormer, hip-to-gable, Velux, mansard and L-shape builds on the larger houses and generous plots this part of Worthing is known for, with architectural support on every project. Book a free, no-obligation site visit.
Thinking about a loft conversion in Offington? Apex designs and builds them across this part of Worthing, close enough to our base that a site visit is easy to arrange. Offington is an unusual proposition among the Worthing neighbourhoods we cover, and the reason has very little to do with planning designations. There is no conservation area over it and we are not aware of an Article 4 Direction affecting it, so on the paperwork side a conversion here is generally simpler than in the older parts of the town. What actually shapes an Offington project is the plot: this is one of the most heavily tree-protected parts of the borough, laid out with wide, generously planted gardens, and a great many of the mature trees standing in them are covered by tree preservation orders.
That is not an obstacle to a loft conversion, and it is worth saying so plainly, because homeowners sometimes assume a protected tree rules the work out. It does not. The loft sits above the trees, not among them, and nothing about the conversion itself touches them. What the trees decide is the logistics. Where the scaffold can stand, how a lorry gets close enough to unload steels, whether a skip can sit on the drive or has to go on the road, and whether any branch needs lifting or cutting back to make room. Work covered by a preservation order needs consent from the council in its own right, and that is a separate conversation from planning permission for the conversion. It is a straightforward thing to sort out early and an expensive thing to discover on the morning the scaffolders arrive, which is why we look at access on the first visit rather than at the quote.
The other thing worth knowing is that the roofs here are big. On a lot of Offington houses the question is not whether a room will fit but what the new floor ought to be: two bedrooms and a bathroom, a single large suite, or a self-contained working floor. The real ceiling on that is usually the volume allowance permitted development sets rather than any local designation, and on a substantial house it is genuinely possible to run out of allowance before running out of roof. We take the job from survey to handover, our trusted architectural partners can prepare drawings and submit any application or Lawful Development Certificate on your behalf, and we build to current Building Regulations. Contact us for a free quote on your Offington loft conversion.
With larger roofs to work with than most of Worthing offers, more of these five are usually available on an Offington house than would be on a smaller property, so the choice is a real one rather than a foregone conclusion. The deciding factors here tend to be how much volume allowance you have left, what you want the floor to do, and how the scaffold and access work around the planting. We will go through all three at the first visit.
The workhorse conversion on this kind of house. A dormer builds out from the existing slope to create standing headroom and proper floor area, and on the broad roofs common in Offington a rear dormer can produce enough space for two rooms rather than the single one it yields on a narrower property. Where a house sits well back behind planting, the visual impact from the road is often minimal. Outside a conservation area a rear dormer will frequently sit within permitted development, though on a large house the volume allowance is the thing to check first.
Where a roof slopes inwards at the side instead of rising to a vertical wall, rebuilding that side up to a full gable releases the volume the hip removes. On the detached and semi-detached stock here it is often combined with a rear dormer, and on a wide plot with space either side there is usually no difficulty getting scaffold up the flank of the house, which is not always true on tighter streets elsewhere in the town. Where a mature protected tree stands close to that flank, we plan the scaffold and any branch clearance before the work is programmed.
The lightest option and the one that consumes no volume allowance at all, which on a large Offington house can be the deciding factor if previous extensions have already used it up. The roof shape is left alone entirely: we strengthen the structure, insulate, board the floor and set rooflights into the existing slope. On a generous roof with good height already, this can produce a very usable room with the least disruption and the shortest run on site.
The largest gain of the five, achieved by rebuilding a roof slope to near vertical. Full planning permission is needed, and unlike most of the properties we look at in the smaller villages, an Offington house often has the scale and the setback to make a mansard a credible proposition rather than an overreach. It is still the most involved option and the longest on site, so it is worth being clear about what the extra floor area is for before committing to it.
For houses with a two-storey wing running back off the main body, an L-shape dormers both roofs and links them into a single floor. The layout it produces is genuinely different from a straight dormer, with the scope to separate a bedroom from a bathroom or a study properly rather than dividing one long room. On the larger Offington properties that have this shape, it often gives the best usable result short of a mansard.
On a house with a big roof the design question changes. Instead of working out whether a room can be squeezed in, we are working out what the best use of a substantial new floor is, and that is a conversation about how you actually live rather than a purely structural one. At the survey we measure ridge and head heights, look at the roof framing, find where the staircase can land and check what previous extensions have already taken out of your permitted development allowance, since that last point catches out more large houses than any other. We will also walk the plot and look at access and planting, because on an Offington property that shapes the programme as much as the drawings do.
Worthing is where we are based, so Offington is minutes away rather than a trip. We work with Worthing Borough Council through the shared Adur and Worthing service regularly, we know how tree preservation orders are handled in the borough and when consent is needed for work to a protected tree, and we are used to setting scaffold and planning deliveries on plots where mature planting has to be worked around rather than through. You get the same crew from survey to handover and a team that keeps the site tidy on a road where the neighbours will notice.
On a larger house the standard of finish is held to a higher bar, because everything else in it has been done properly. That is the level we work to: flat plaster, tight mitres, doors hung square, dormer cheeks that line through with the existing elevation, and insulation and airtightness detailed rather than stuffed in. All work meets current Building Regulations and we coordinate with your Building Control inspector at every stage that needs signing off. There are recent projects in the gallery below and we are happy to arrange for you to speak to previous customers.
Six stages take an Offington project from the first look at the roof to the finished room. We handle the survey, the build and the coordination between them, and our trusted architectural partners cover design and any application. Certain duties stay with you and cannot be transferred to the builder: Party Wall notices, listed building consent where a property is listed, the Building Control submission, and any consent needed for work to a protected tree.
We come and measure up, look at the roof framing and check ridge and head heights. On an Offington property we walk the plot as well, because scaffold positions, delivery access and any mature planting near the working area all need to be understood before a programme means anything. No charge and no obligation.
We will price against drawings you already have. If there are none, our trusted architectural partners can take on the layout and technical drawings, which on a larger conversion is worth doing properly because there are more ways to arrange the floor. The quote and an outline programme come back with the drawings.
Applications for Offington go to Worthing Borough Council through the shared Adur and Worthing service. With no conservation area over the neighbourhood, many conversions here fall within permitted development, though on a large house the volume allowance is the limit to check and a Lawful Development Certificate is worth having on record. The separate item on an Offington job is trees: if a protected tree needs pruning to allow access, consent for that work is applied for in its own right. Our architectural partners can prepare and submit what is needed, and Party Wall notices remain your legal responsibility.
Work begins once the drawings, consents and structural calculations are all agreed. The duration reflects the conversion type and the size of the new floor, and a mansard or a two-room dormer on a big roof is a longer job than a rooflight conversion. The roof stays weatherproof throughout. We agree scaffold, delivery and skip arrangements with you beforehand so nothing has to be improvised around the planting on the day.
You arrange the inspections, either through the local authority building control service or an approved inspector you appoint. We build to the current Building Regulations and work to the inspector schedule so each stage is checked while it is still open.
Once the final inspection is signed off on your side we hand the finished floor over. File the completion certificate and the approved drawings with the property paperwork; on a house of this type a buyer’s solicitor will expect to see both.
A selection of loft conversions completed across Offington, the surrounding Worthing neighbourhoods and the wider West Sussex coast, taking in a range of property sizes and conversion types. If you would like to see something on a house comparable to yours, ask and we will send the closest examples.
The notes below are general context for Offington homeowners considering a loft conversion and do not constitute legal advice. Always confirm the position for your property with Worthing Borough Council, and where relevant with an architect, planning consultant, arboriculturist or party wall surveyor, before any work starts.
Planning authority. Planning for Offington is handled by Worthing Borough Council through the shared Adur and Worthing service, and the neighbourhood lies outside the South Downs National Park.
Protected trees. Offington is among the most heavily tree-protected parts of the borough, so check with the council whether any tree near the working area carries a preservation order before scaffold and access are planned.
Tree work consent. Pruning or removing a protected tree needs consent in its own right, applied for separately from any planning permission for the conversion.
Conservation area. No conservation area covers Offington, though several cover neighbouring parts of Worthing, so confirm the position for a property near the edges.
Permitted development. Many conversions proceed under permitted development, but on the larger houses the volume allowance bites first, especially where earlier extensions used part of it.
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 is based in Worthing and covers the whole of the town, so Offington is one of the closest neighbourhoods we work in. If you are weighing up the surrounding areas too, we have written separately about loft conversions on the bungalow stock in Durrington, about Broadwater and its rear projections, and about the elevated plots up at High Salvington. There is also a page covering Worthing as a whole.
It starts with a free site visit. We measure the roof, check what your permitted development allowance still has in it, walk the plot for access and planting, and give you a straight answer on what the space can become. Our trusted architectural partners can then take on the drawings and any application, and you will want to confirm the planning position for your own property with Worthing Borough Council before work begins.
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 questions we field most often from Offington homeowners. If yours is not answered here, send it over through the contact form and we will reply.
Longer than average, generally, and for a good reason: the conversions we build here tend to be bigger. A rooflight conversion is quick anywhere. A two-room rear dormer or a mansard on a large roof is a substantially bigger piece of work than a single-room conversion on a smaller house, and the programme reflects that. Access can add a little where scaffold has to be worked around mature planting, and if a protected tree needs pruning for access that consent has its own timescale which is worth starting early. We will give you a realistic programme for the build at quote stage and flag anything in the approvals that looks likely to govern the start date.
Often not, but check the allowance rather than the map. Offington has no conservation area over it and we are not aware of an Article 4 Direction affecting it, so the usual national permitted development rules apply, covering volume, position and materials. The catch on a large house is that the volume allowance is finite and previous extensions may already have eaten into it, so a scheme that would be permitted on a smaller property can tip over on a bigger one. A Lawful Development Certificate is worth obtaining either way. Where a full application is needed it goes to Worthing Borough Council through the shared Adur and Worthing service, and our trusted architectural partners can prepare and submit it. Building Regulations apply regardless.
Yes, and on an Offington house it tends to be more comfortable than average because there is usually more distance between the work and the rooms you are living in. The roof is kept weatherproof from the moment it is opened. The disruptive points are the steel installation and cutting the staircase opening, and we give you notice of both. Where the plot allows, we can often keep deliveries and the skip off the frontage entirely, which makes a noticeable difference over a longer build. We will agree all of that with you before anything arrives on site.
Loft conversions have long been rated among the stronger returning improvements, though the outcome for any one house depends on the property, the market and the quality of the work. Offington sits at the upper end of the Worthing market, and at that level buyers are less impressed by an extra room in itself than by whether it has been done to the same standard as the rest of the house. A well-proportioned floor with proper head height, a decent staircase and a good ensuite will be valued; a cramped conversion with an awkward stair will not, and can count against the property. That is the argument for designing the floor properly rather than maximising it.
Around 2.2 to 2.3 metres from the top of the existing ceiling joists to the underside of the ridge is the general guide for a conversion to work without altering the roof. Offington roofs are often generous enough to clear that comfortably, which is why rooflight conversions are more frequently viable here than in parts of the town with shallower pitches. Where the height is marginal, a dormer or a mansard creates it. We measure it properly on the free visit, including the head height at the wall plates, because the ridge figure on its own does not tell you how much of the floor will actually be usable.
On most Offington houses more than one option genuinely works, so it becomes a question of what you want and what allowance you have. If head height is already good and you would rather not spend volume allowance, a rooflight conversion is efficient. If you want real floor area, a rear dormer on a broad roof will often give you two rooms. Where the roof has an inward sloping side, a hip-to-gable added to that dormer opens it up further. An L-shape suits houses with a two-storey back wing, and a mansard is a credible option here where it would be excessive elsewhere. We will set out the realistic choices at the first visit.
Yes, without exception, and separately from anything to do with planning. The regulations govern structure, normally requiring steel beams and strengthened floor joists; fire safety, meaning a protected escape route, fire doors and interlinked alarms; the staircase and its headroom; thermal performance; and sound insulation to the rooms below. On the larger conversions common in Offington the fire strategy in particular needs proper thought, because a longer escape route puts more demand on it. The submission and inspections are the homeowner’s responsibility, through the local authority building control service or an approved inspector. We build to the standards and coordinate with whoever you appoint.
