Rear extensions

Rear extensions are one of the most popular type of extensions in the UK. As house and land prices continue to rise, many people are choosing to remain in their existing home and build additional living space at the rear of their property.

Many homeowners like the area they live in and don’t want to move, but need more space for their growing family. Others may not be in a financial position to move to a larger property.

If your family is growing and you need more space, then a rear extension is a perfect solution to your problems without the need to move house.

Fittra offers a comprehensive building service for homeowners in London and across the UK who want to expand the living area of their home. Our expert team of design, planning and engineering consultants will guide you through the entire process, from start to finish.

Can you extend back of house UK?

One of the reasons that rear home extensions are so popular is that planning permission is not usually required, provided the proposed plans meet certain requirements and are covered within the permitted development rules.

Whether you live in a detached house in the suburbs, or a Victorian terraced house in London, you are able to take advantage of flexible planning rules to extend your property and increase the living space of your home.

Building an extension at the rear of your house can completely transform your living space. Many homeowners opt to create an airy, open plan living area, with an open plan kitchen and bi-folding doors leading out to the patio and garden.

How much does a rear extension cost UK?

A rear house extension cost will depend on a variety of factors. The prime factor will be the size of the build. A small rear extension to a terraced house will cost significantly less than a large addition to a detached family house.

The cost will also be determined to a large extent on the client’s individual specifications for the build. A more complex architectural design, with higher-end finishes and materials will cost more than a more straightforward build project.

Location is also a relevant factor. The cost of rear extension London is the highest in the UK, whereas in other parts of the UK the cost will be less. However, any building addition which increases the area of the internal living space of a home is a good investment. The increase in the value of the property will far exceed the cost of the building work involved in a rear extension, adding immediate equity to the value of your home.

Fittra works with clients with all types of budgets and specifications. We offer transparent and competitive pricing, and agree detailed cost estimates with the client before commencing each project.

Whatever your budget and requirements, we will work with you 24/7 to ensure that we design and build an addition to your home that is perfectly suited to your needs, and you will be 100% satisfied with.

The team at Fittra take great pride in our service, workmanship and attention to detail. As a result, the majority of our clients come to us through referrals.

How far can I extend the rear of my house?

Under so called permitted development rights, a rear extension can be added to your existing property without the need for planning permission, provided the following rules are adhered to, which can be summarised as follows:

the new addition must not extend more than 3 metres from the rear of the existing property (4 metres for a detached property)
the extra space must not exceed 50% of the area of the existing house
the extension must not be more than 4 metres in height
in the case of a double storey rear extension, there must be at least 7 metres remaining of garden from the end of the property

Under new rules introduced in 2021, an extension can be pushed out to 6 metres (8 metres for a detached property) under a neighbourhood consultation scheme.

It is essential that you work with a construction company who understands the rules relating to rear extension planning and can produce a set of plans which both adhere to these rules and meet your requirements.

If you are looking for back of house extension ideas, then contact Fittra for a free consultation. Our NHBC-registered firm has an in-house team of architects and planning consultants who can guide you through the whole process.

If you have a vision of how you would like to extend your home, then we can help you make your vision become a reality. Contact us today!

Interested in rear extension?

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Testimonials

Team at Fittra possesses all the attributes necessary to be an excellent contractor: they know their market extremely well; they are diligent, responsive, and yet very understanding with their clients. They are very professional and offer cost saving alternatives when possible. The thing that has impressed me the most is the professionalism, knowledge and helpfulness of all the workers. Hanwell, New Build

We did our house fully renovation last year July 2019 – December 2019 with Fittra. We are very pleased with the results – our new kitchen (rear extension with lantern roof light), loft conversion, hardwood flooring, underfloor heating, tiling and etc.. Ivan and his team are truly professional. They finished the job with timely manner and customer satisfaction. Their breakdown quotes are easy to understand and easy to work with. We are highly recommended for Ivan, Igor and the team. Great job!!! Isleworth

The work that Fittra did for me was a full house renovation – this did not include any new build or extension work but it did include moving a number of internal load bearing walls and extending external openings to install large sliding doors. The work was reasonably complex structurally as the upper floor is steel beam and concrete block construction. Externally all windows and doors were changed, guttering and fascias were changed and a new tiled deck constructed to give an outside/inside feel. Internally, walls were moved, new door openings created or widened to give a modern open plan look and feel. Maidenhead

Fittra completed a rear extension, loft conversion and full refurbishment of our house in Ealing late last year. This included new bathrooms, heating system (including underfloor heating), electrics and plumbing. When obtaining quotes, Fittra’s prices were in the middle of the three companies who came back to us with costs, but the fact that it was fully itemised (unlike the other costs we received) gave us piece of mind that we knew exactly what we were getting for our money. Ealing

Can’t speak highly enough of Fittra and the job they did. They completed a rear extension, side return and loft extension and pretty much a full refurbishment of our house and garden in SW London. They not only did an incredible job, but they were also great to work with too. Vadym and Ivan’s team were incredibly efficient and hardworking and really amenable and collaborative. I have recommended them to a few friends subsequently, and will continue to do so. Wandsworth

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In the picturesque setting of Twickenham, our latest project breathes new life into a two-storey end-of-terrace house, marrying high-quality renovation with historical charm. The addition of a loft extension introduces a spacious family bedroom with an en-suite and a study enhancing the home’s functionality and appeal. The renovation encompasses a thorough overhaul of the interior, inclu...

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In Earls Court, a landmark project designed by Leufroy and Teo Architects, and built by Fittra, breathes new life into a Victorian building, converting it into three luxury apartments across 400 square meters. As the main contractor, Fittra has masterfully executed an extensive renovation, including a new basement and a rooftop terrace with exclusive amenities like a barbecue and lounge area....

Earls Court Transformation: Luxury Living

In the heart of Earl’s Court, London, a five-story edifice has been transformed through an extensive renovation, culminating in the creation of 10 exquisite studio apartments, each designed to cater for the discerning tastes of professionals. This project, characterised by its comprehensive overhaul both inside and out, showcases oak flooring, bespoke joinery, and wardrobes, maximising every in...

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Modern Living Redefined in Slough's New Development On the outskirts of London, in a popular residential area of Slough, a new development project introduces a modern two-storey, five-bedroom house that redefines suburban living. This new build combines the latest in architectural design with the comforts of home, creating a perfect setting for family life. The house is designed w...

Raynes Park

Modern Makeover in Rayners Park with Loft Extension In Raynes Park, an extensive renovation transforms a detached property, introducing a modern loft extension above the garage. This project enhances the home's functionality and aesthetic appeal, blending traditional charm with contemporary design. The loft extension adds valuable living space, adaptable for various uses such as a...

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Chelsea Charm Reimagined in West Brompton In the prestigious neighborhood of Chelsea, a two-bedroom apartment from the 1880s has been meticulously renovated, marrying its historical essence with modern elegance. Located in West Brompton, this project involved significant structural changes, the introduction of soundproofed oak flooring, and bespoke internal doors that pay homage to the a...

Chelsea

In Chelsea, a five-story building underwent an extensive renovation process to achieve high standards of sophistication and luxury. We worked alongside an investment company to create six stunning two/three-bedroom apartments that combine comfort and elegance. Throughout the apartments, oak floors were used, and bespoke joinery and wardrobes were installed, ensuring that every space was ...

Brompton

This project features a full renovation of a block of 10 studio apartments within a 5-storey building in the Brompton. Working closely with an investment management company, our goal was to create exceptional living spaces that would attract young, successful professionals. Each studio apartment was thoughtfully designed to maximise space and functionality, while incorporating stylish an...

Do you have questions?

Frequently Asked Questions

What is a rear extension?

A rear extension extends from the rear of your house into your garden space, whilst a side return extends the width of your property, utilising the dead space down the side of your home.

Do I need an architect for a small extension?

For a full planning application you will need professional architecture drawings, so the answer would be Yes. Your architect should be able to create your more detailed building regulations drawings, and instruct a structural engineer on your behalf.

What size extension can I build without planning permission?

Rear extensions tend to have the least amount of red tape associated with them and in most cases, you should be able to build a single storey extension of up to four metres for a detached house, or three metres for all other types of house, without the need for planning permission or prior approval.

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