Rainbow Building, Plumbing & Electrical Services

Home Extension Builder in Brighton and Hove - Extension Building Service

Home extension builders in Brighton and Hove

A home extension can be a major investment for your property, and we are here to help you make the most of it. We have a team of experienced and skilled builders that can provide a comprehensive and professional service, from design and planning, to construction and completion.

Our home extension service begins with a consultation. We listen to your ideas and requirements and help you to design the perfect extension for your home. We take into account factors such as the size and layout of your property, your personal style and preferences, and your budget.

Once your extension design is finalized, our extension builders will begin the construction process. We will carefully prepare the site, and construct your extension, using the highest quality materials and the latest building techniques. We will also advise you on any necessary planning permission and building regulations.

In addition to our construction services, we also offer a range of complementary services to help complete your new extension. These include flooring, plastering, and painting, as well as fixtures and fittings. We also provide a clean-up service, to ensure that your home is left clean and tidy once the construction is complete.

Our services are designed to give you a hassle-free and professional solution to your home improvement needs. With our expert team of home extension builders, competitive prices, and commitment to customer service, we are sure you will be happy with your new extended home.

Do you need to know about planning permission for your project? Check out our Complete Guide to Planning Permission in England 2023

  • We engaged Rainbow to have internal painting and decorating of most of a 4 bedroom detached house. The work was completed to a very high standard in a very reasonable… read more

    Tim Baxter Avatar Tim Baxter
    14/02/2024

    Work was completed professionally and on time, no complaints

    Liz Finch Avatar Liz Finch
    06/02/2024

    Great experience with all the team at Rainbow who worked on a complete renovation to the front and side of our property. Couldn’t recommend highly enough – from start to… read more

    Russell M Avatar Russell M
    06/02/2024
  • Prompt, friendly, courteous, thorough

    James Stafford Avatar James Stafford
    06/12/2023

    A massive thanks to Kev and his team for a brilliant job on my bathroom renovation which included the removal of a non-load bearing internal wall, full damp proofing, building… read more

    Rowan Bastable Avatar Rowan Bastable
    04/09/2023

    I commissioned Rainbow to re-render just under our roof. Although busy, Kev fitted us in and did a fantastic job.

    Timothy John Jacobs Avatar Timothy John Jacobs
    08/07/2023
  • Kev and his team are so reliable, responsive and professional. They always had a solution when the inevitable unforeseen issues with an old house came up and were flexible and… read more

    Laura SeQueira Avatar Laura SeQueira
    08/06/2023

    We used Rainbow to help fix some house structural problems – cracked walls and roof problems – and to give the exterior a much needed smartening up. Very glad to… read more

    Chris Cousins Avatar Chris Cousins
    08/06/2023

    Rainbow Building Plumbing & Electrical Services recently moved a kitchen and a boiler to new rooms within the house for us. The work required involved kitchen fitting, plastering, carpentry, flooring,… read more

    Ed K Avatar Ed K
    08/05/2023
  • Kev and his team did a great job of replacing my bathroom including all walls and flooring. They worked exceptionally hard to produce a great result within the time-frame… read more

    Annemarie Rogers Avatar Annemarie Rogers
    07/12/2022

    Kev and the team did a wonderful job on our kitchen and even managed to get it all back working in a week! They did encounter some plumbing… read more

    Kate Avatar Kate
    07/12/2022

    We recently used Rainbow Building on a project to refurbish our kitchen and install new, wider patio doors. Kev has long experience in the industry, and has great attention to… read more

    Foz Fozard Avatar Foz Fozard
    11/11/2022

WORKING ALONGSIDE THE LGBTQ+ COMMUNITY IN BRIGHTON & HOVE AND SURROUNDING AREAS

Types of Extensions we build

Single

This is the most popular extension. A single-storey rear extension creates an additional room or extends an existing room.

Double

If you need more space upstairs as well, then a double extension can add space to bedrooms or create a new master bedroom with en-suite or a dressing room.

Wrap

A wrap extension wraps around two sides of your home: the rear and side creating an L-shaped extension giving you more space.

Side

A side-return extension makes use of space between rear rooms and your boundary fence. This type can extend a kitchen, dining room or living room.

How we work

Assessment

Our assessment is a thorough review of your home extension ideas, how your home is constructed and how feasable your plans are.

Planning permission

Planning permission is not required for all extensions, however, if local authority consent is required, we can help you with the best ways to gain approval.

Project management

You will have a dedicated project manager who will be your point of contact throughout the project and will coordinate all aspects of the work carried out.

Does Your Home Need Extending?

Complete our enquiry form and we’ll be in touch within 48 hours to arrange a site visit, during which we’ll offer a free, no-obligation estimate.

Our Trades

BUILDER

PLUMBER

ELECTRICIAN

BATHROOM RENOVATOR

KITCHEN RENOVATOR

PLASTERER

ROOFER

PAINTER & DECORATOR

ARCHITECT

STRUCTUAL ENGINEER

INTERIOR DESIGNER

Our Services

PROPERTY REFURBISHMENT

HOUSE RENOVATION

PROPERTY MAINTENANCE

BOILER REPLACEMENT

KITCHEN FITTERS

BATHROOM FITTERS

DAMP PROOFING

HOME EXTENSIONS

uPVC WINDOWS & DOORS

LANDSCAPING

ELECTRIC VEHICLE CHARGING

Home extensions FAQs

The size of your extension will determine this. The permitted development rules have recently been relaxed, allowing you to construct an extension of up to six metres without obtaining planning approval (or eight metres if your house is detached). Anything higher than this requires planning permission.

The majority of planning permission applications typically take eight weeks. Generally speaking, this is the case unless the proposed project is large or difficult, in which case a judgement must be made within 13 weeks.

List all the features you want in your extension, such as an extra bedroom with an en suite, a new kitchen, a larger bathroom, and more storage space.

  • Obtain extension architecture drawings that satisfy all of your needs.
  • Apply for planning permission (if needed).
  • Get an estimate.
  • Decide on a start date.

Yes, extending your property or adding more rooms will increase its worth.

Single-storey extension:  3-4 months to complete.
Double-storey extension: 5-6 months to complete.