Builders in Burgess Hill
A large share of homes in Burgess Hill are post-war or modern, and many owners find the extra space they need is already there in the garage or the roof. We can put you in touch with up to 3 checked builders in Burgess Hill for free quotes, with no obligation.
A town of mostly modern homes
Burgess Hill grew a great deal in the second half of the 20th century, so much of its housing is post-war or more recent, with Victorian and Edwardian homes closer to the town centre and new housing still being built around the edges of the town. Modern estate houses are often well suited to a garage conversion, a side extension or a single storey rear extension. Loft conversions are possible in many homes too, but the roof structure makes a big difference to the cost and the design. Older houses near the centre bring different questions, such as how to join new work to solid walls. Whichever kind of home you have, it pays to understand the options before you ask for prices.
Converting an integral or attached garage
A garage that is rarely used for a car can become a study, playroom or bedroom, often without changing the footprint of the house. MyJobQuote puts an integral single garage conversion at £10,000 to £14,000, or £450 to £750 per m², taking 2 to 3 weeks, and an attached single garage at £10,000 to £20,000. The Federation of Master Builders quotes a member firm giving a range of £7,000 to £32,000, with most projects averaging £13,500 for a standard 16m² garage. Neither source says whether its figures include VAT, and neither gives Sussex prices. Some planning permissions on newer estates include conditions about keeping garages for parking, so check your property's planning history with Mid Sussex District Council first.
Mid Sussex District Council's building control charges from April 2025 list the conversion of a non exempt garage at £155 for the plan charge and £409 for the inspection charge, or £565 as a building notice, all plus VAT. A regularisation application for this work is £847.50, with no VAT. Our garage conversion cost guide compares more published figures.
Loft conversions in newer houses
Many houses built in recent decades have roofs made from trussed rafters, with diagonal timbers running through the loft. A loft can still be converted, but the trusses have to be replaced or strengthened with new structural members, so a structural engineer's design is normally part of the job. Where permitted development applies, the Planning Portal limits the extra roof space to 40 cubic metres for a terraced house and 50 cubic metres for detached and semi-detached houses. Checkatrade gives a 30m² dormer conversion an average of £50,000, within a range of £40,000 to £60,000, and a hip to gable conversion an average of £60,000, within £50,000 to £70,000. It does not say whether these figures include VAT.
For building control, Mid Sussex District Council's charges from April 2025 list a loft conversion of up to 40m² in a home of no more than two existing storeys at £278 for the plan charge and £558 for the inspection charge, or £836 as a building notice, all plus VAT. Larger lofts over 40m² and up to 100m² are £360, £704 and £1,065 respectively, again plus VAT. Check the council's website for its current charges before you apply.
Extending to the side or rear
If you have room beside the house, a side extension can add a wider kitchen or a utility room. The Planning Portal says a side extension under permitted development must be single storey, no more than four metres high and no wider than half the width of the original house, and that all side extensions of more than one storey need householder planning permission. A rear extension of more than one storey must not extend more than three metres beyond the original rear wall or come within seven metres of the boundary opposite. If you need planning permission, GOV.UK sets the householder fee in England at £548 from 1 April 2026. Our extensions page explains the main types in more detail.
Choosing a building control route
GOV.UK explains that you can use the council's building control service or a private registered building control approver, who sets its own fee. With a full plans application, the plans are checked and you get a decision within five weeks, or two months with your consent. A building notice suits smaller projects and allows work to start two days after it is submitted, but there is no formal approval of plans. Once the work is complete and complies, GOV.UK says you will usually receive a completion certificate within eight weeks, which you will want to keep for when you sell.
Getting local quotes in Burgess Hill
Tell us what you are planning and we will pass your details to up to 3 checked builders who work in Burgess Hill and the surrounding villages. They will be in touch to look at the job and give you a quote, and the service is free with no obligation. If you already know whether your garage or roof is suitable, mention it, as it helps builders prepare. You can also call 01273 115520.
Areas covered nearby
Building services we cover
Frequently asked questions
Can I convert the loft in a modern Burgess Hill house?+
Often you can, but houses with trussed rafter roofs need structural work to open up the space. A builder or structural engineer can look at your roof and tell you what is involved before you commit to a design.
Does a garage conversion need building regulations approval?+
Yes, turning a garage into a habitable room needs to meet building regulations, covering things such as insulation, ventilation and fire safety. Mid Sussex District Council's charges from April 2025 include a category for converting a non exempt garage, or you can use a private registered building control approver.
Are the Mid Sussex charges on this page up to date?+
They are the council's charges from April 2025, which was the most recent schedule we found when we checked in October 2026. Check the council's website for its current charges before you apply.
Which areas near Burgess Hill do your builders cover?+
Builders in our network cover Burgess Hill and nearby places such as Hassocks, Keymer, Hurstpierpoint and Ditchling. If you live further north, see our page for [Haywards Heath](/haywards-heath/).
Sources for the prices on this page
Prices are published UK averages and include labour. Every job is different, so the quotes you receive will reflect your own property, access and materials.
- MyJobQuote: Garage conversion cost 2026, checked October 2026
- FMB: Garage conversion costs UK, checked October 2026
- Checkatrade: Loft conversion cost, 2026 UK price guide and breakdown, checked October 2026
- Mid Sussex District Council: Building control charges from April 2025, checked October 2026
- GOV.UK: Fees for planning applications in England from 1 April 2026, checked October 2026
- Planning Portal: Planning permission for extensions, checked October 2026
- Planning Portal: Planning permission for loft conversions, checked October 2026
- GOV.UK: Building regulations approval, how to apply, checked October 2026
Compare up to 3 free quotes
Tell us about the job and up to 3 checked local builders will be in touch with quotes. There is no charge and no obligation. Or call 01273 115520.