Sinclair & Jones Building Contractors Ltd




A lack of space can cause frustration and the desire to either move or extend, but many homeowners forget the amount of room above their heads. Lofts and attics tend to offer a large amount of space, but end up damp, dusty and used only for storage. Thankfully, there is a way to use this space you own. Specialising in loft conversions, our dedicated, in-house team of builders in Haywards Heath transforms attics across Hassocks, Horsham, Lewes and Burgess Hill – turning them from cold, dark environments into modern living spaces.

Sinclair & Jones Building Contractors Ltd can assess the feasibility of your planned loft conversions and guide you throughout the conversion process with a friendly approach. We have a reputation in Sussex for high-quality workmanship and cleanliness alike.

Our team of builders can provide the following and more:

With a talent for home refurbishments and renovations, we deliver specialist care to loft conversions in the Sussex area. From dormers in Haywards Heath and Horsham to mansards in Hassocks, Lewes or Burgess Hill, our team performs the structural and decorative work needed to make your loft a welcoming place to be.

Do you have questions about a building project? We are always willing to answer your questions and provide guidance on any building or renovation project.

Sinclair & Jones Building Contractors Ltd
Loft conversion


By choosing our in-house builders for loft conversions, you receive a bespoke service that provides all building services needed for a luxurious new office, bedroom, game room, lounge or en-suite. We can also help boost your property’s value by around 20 per cent.

Rooflight Installations – Perfect for homeowners in Haywards Heath, Hassocks, Horsham, Lewes and Burgess Hill on a tight budget, rooflight installation work adds large windows to the roofing structure. This brings natural light into the attic and even lets you stargaze at night when the weather allows.

Dormer Loft Conversions – Typically seen as a box-shaped build attached to a pitched roof, dormers remain the most popular style to date. These loft conversions rarely demand planning permission and grant a 90-degree wall with a set of windows that, in some cases, can even open onto a balcony. Our team of builders often creates cost-effective dormers throughout the Sussex area.

Loft conversion

Mansard Conversions – This type of conversion requires the most structural changes and usually needs planning permission to proceed. Mansard loft conversions maximise the amount of loft space available, potentially making it feel like you have an additional floor. These conversions prove ideal for the most ambitious of design ideas, allowing for the most ambitious of plans to go ahead.

Hip-to-Gable Conversions – Lofts across Haywards Heath, Hassocks, Horsham, Lewes and Burgess Hill often feature sloping roofs that restrict usability. Hip-to-gable loft conversions change a sloped roof into an upright one – achieving the headroom needed to make the space ready for use.

As trusted builders, we can assess your situation and advise on the right conversion for your property. We offer to manage the process from start to completion, which we do to your budget, and the timescale agreed.

Free No Obligation Quote

Discuss property extensions for your home in Haywards Heath, Horsham, Lewes, Burgess Hill or the surrounding areas, speak with our team on