House Extensions in Brighton
Expertly Constructed Extensions Tailored to Your Home and Lifestyle Across Brighton and East Sussex
At The Patcham Building Company, we specialise in designing and building high-quality house extensions for homeowners who love where they live but need more space. Whether you want to expand your kitchen, create an open-plan living area, add a home office or build a new bedroom and ensuite, our team of experienced builders delivers exceptional results from start to finish.
We provide fully managed house extension services across Brighton and within a 30-mile radius. From initial concept and planning to brickwork, plumbing, electrics and final finishes, we take care of everything in-house so your project runs smoothly, on time and within budget.
Types of House Extensions We Build
We offer a full range of extension types to suit your property and lifestyle:
- Single-Storey Extensions – Ideal for expanding kitchens, living rooms or utility areas
- Multi-Storey Extensions – Add bedrooms, bathrooms, a study upstairs, and more ground floor space
- Rear Extensions – Extend into your garden to create a larger open-plan kitchen-diner or living area
- Side Return Extensions – Make better use of side alleys or wasted space for extra internal square footage
- Wraparound Extensions – Combine rear and side extensions to reconfigure the layout completely
- Over-Structure Extensions – Add rooms above garages or existing single-storey buildings
Fully Managed from Start to Finish
Our house extensions are fully project-managed by experienced builders and tradesmen. That means one point of contact, a clear schedule of works, and no need to coordinate multiple contractors.
We cover every element of your extension, including:
- Design and layout planning
- Groundworks, footings and foundations
- Structural alterations (including steel beam installation)
- Brickwork and blockwork
- Roofing and insulation
- Plumbing and heating
- Electrical rewiring, sockets and lighting
- Plastering, rendering and painting
- Flooring and ceilings
- Bespoke carpentry and joinery
We also offer kitchen installations and bathroom installations as part of our extension packages, giving you the freedom to design your ideal new space with everything included.
Multi-Storey Extensions to Maximise Living Space
If you’re looking to add significant space and value to your Brighton home, a multi-storey (or double-storey) extension is one of the most effective solutions. By building vertically as well as outward, you can double your usable floor area and reimagine the way your household lives day to day. Whether you need a larger kitchen and dining area downstairs and an extra bedroom or bathroom upstairs, a two-storey extension allows for complete flexibility in layout and function.
The Patcham Building Company specialises in designing and constructing multi-storey house extensions that blend seamlessly with your existing property. And don’t forget, we take care of everything!
This type of extension is ideal for growing families, home offices, or anyone who wants to future-proof their home without the stress and cost of moving. With our experienced team, local knowledge, and eye for detail, we’ll help you unlock your home’s full potential with a beautifully built extension that fits your lifestyle and budget.
How much does a house extension cost in Brighton?
Costs vary depending on size, design, structural changes, and finishes. We offer detailed, transparent quotes after an initial site visit and consultation.
Do I need planning permission for my extension?
Many single-storey extensions fall under permitted development, but we can help advise and apply for planning permission if required.
What’s the limit for rear extensions without planning?
Under permitted development rules, you can typically build a single-storey rear extension up to 3 metres from the original rear wall for a terraced or semi-detached house and up to 4 metres for a detached house — without planning permission. However, the extension must not exceed 4 metres in height and mustn’t cover more than 50% of your garden space.
How long does a house extension take?
It takes 8 to 16 weeks, depending on the complexity and scale. We provide a full schedule and keep you informed at every stage.
Can you help with the kitchen and bathroom fitting inside the extension?
We offer complete kitchen, ensuite and bathroom installations as part of our service.
Will I need to move out during the work?
In most cases, no. We work efficiently and respectfully to minimise disruption so you can stay in your home.
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Book a Free Consultation for Your House Extension in Brighton
The Patcham Building Company is here to help you make the most of your home. With expert advice, clear pricing, and a trusted local reputation, we’re your first call for house extensions in Brighton and beyond. Call us on 01273 583020 to get started.