Rear Extensions

A rear extension can sometimes be described as a kitchen extension, as it’s often the room that is closest to the outside space. It is one of the most popular ways to transform a home, giving you extra living space.  Overall, improving the layout, flow, and functionality of your property.

At Simply Easy Refurbs, we specialise in home extensions of all kinds. We design and build rear extensions across London, helping homeowners create practical, beautiful spaces.

The first step is requesting your free quote, followed by checking out our recent projects, and our excellent rating on TrustPilot.

Create additional ground floor space that blends seamlessly with your existing home. Suitable for many of the property types common across London:

Victorian terraces
Edwardian homes
Semi-detached houses
Detached properties

Designed in a range of styles, from contemporary open-plan spaces to more traditional extensions that complement the character of your home. If you can dream it, we can design it!

Why choose us?

Bespoke designs & planning

Unique to your home.

Price match

Found a cheaper price? We'll match it.

Insurance-backed guarantee

Giving you peace of mind.

Fixed price

Ensuring there are no surprises!

Full project management

Through to completion.

House Extension Types

Rear extensions can be designed in a range of styles. From contemporary open-plan spaces to more traditional extensions that complement the character of your home. Suited to Victorian terraces, Edwardian homes, Semi-detached houses and Detached properties.

Our Rear Extension Services

We provide a fully managed design-and-build service, supporting your project from start to finish. We work closely with homeowners throughout the process to ensure every extension is tailored to your property, lifestyle, and budget. Our free quotes are always transparent, detailing what budget goes where.

A Rear Extension

A rear extension extends out into the garden area at the back of your property. This creates additional ground floor space that blends seamlessly with your existing home.

Our initial visit and quotes are free, so if you have a space you’d like to see transformed, simply contact us.

Get a free, no-obligation quote

Trusted by homeowners across the UK

Lindsey Woodward profile picture
Lindsey Woodward
2 months ago
Fantastic attic conversion with SimplyEasy. Our project manager Ben was amazing throughout the whole process. We were kept informed on every detail at every stage. The work was carried out really fast and finished on time. Highly recommend for any work you need on your home!!!
Logan Max profile picture
Logan Max
3 months ago
SimplyEasy Refurbs provided a fantastic bespoke design for our project – they really listened to what we wanted, came up with clever, space‑saving ideas, and delivered a finished result that feels perfectly tailored to our home
Kevin Lieng profile picture
Kevin Lieng
5 months ago
We recently had our loft converted and are absolutely delighted with the result. From the very first meeting with Seb, who took the time to explain all the options and answer our questions, we felt confident we had chosen the right company. He was knowledgeable, professional, and never made us feel pressured at any stage.
Throughout the project, Marius was our project manager. He kept everything running smoothly, communicated clearly, and ensured the work was completed to a very high standard. Marius’s team was very good, hardworking, and clearly took pride in their work, which really showed in the final finish.
The workmanship throughout was outstanding, and the finished loft has completely transformed our home. The attention to detail, quality of finish, and professionalism shown throughout the project exceeded our expectations.
A big thank you to Seb, Marius, and the entire team for delivering such a fantastic loft conversion. We would highly recommend this company to anyone looking to add valuable space and improve their home
Robert Baylay-Bell profile picture
Robert Baylay-Bell
5 months ago
I initially came across Simply Easy Refurbs (SER) online and followed their work for some time before my project reached the right stage. When I was ready to proceed, they were one of three companies I invited to quote.

From the outset, SER stood out for their efficiency, professionalism and clear understanding of the brief. As part of my due diligence, I spoke with three of their previous clients, all of whom gave strong, consistent feedback. This gave me the confidence to appoint them for a full refurbishment, including a loft conversion and rear extension.

Throughout the project, SER maintained a high standard of professionalism. Communication was consistent, with regular check-ins to ensure everything remained on track and aligned with expectations.

I would not hesitate to recommend Simply Easy Refurbs to anyone considering a full home refurbishment.
Katrina Gimbrere profile picture
Katrina Gimbrere
6 months ago
We used Simple Easy Refurbs to do our loft conversion and are very happy with the service. They used highly skilled builders and helped us resolve any issues that did crop up. They communicated well and I would recommend them to anyone looking to convert their loft.
Vanessa Pinnock profile picture
Vanessa Pinnock
7 months ago
Brilliant execution
We had a very good experience with Simply Easy Refurbs, the communication was always on point whether email, what's app or telephone. The dedicated what's app group is a great platform to check on the progress, share ideas visually etc. We had a good working relationship with all the team but especially with Tomas, our design was executed to a very high standard. All the works carried out was highly professional, done to a high standard and good quality materials were used. All the tradesmen involved worked exceptionally hard sometimes staying later than expected just to get the job done!
We're very happy with the end result. We have a future proof, modern design and the loft conversion has created so much space! We would highly recommend this firm for renovation projects! Thanks again to Seb, Tomas and the team.
Nick Hodgson profile picture
Nick Hodgson
1 year ago
We had a great experience with Sebastian and his team. Our mansard loft conversion has added a whole new floor to our flat and provided an amazing new bedroom for our daughter. Our builder Loren and his team were excellent - the work was done on time and to cost; any issues were swiftly dealt with. As expected, we had to get a fire sprinkler system installed - with hindsight we could have started shopping around for a company to do it before building control confirmed it would be necessary; but we were lucky - we found a company who could do it quickly and that meant there was no delay to our project. The aftercare has been fabulous - only today their electrician came back to move a fan in the new bathroom ceiling that was in the way of our new cupboard doors. We couldn’t have asked for more from SimplyEasy Refurbs: we’d recommend them 100%.
I had a very specific idea for my loft and the team made it happen. Great advice, great quality work. I had so many positive comments from friends and relatives. Also, I recently put my house on the market and viewers loved the loft, I have no doubt that the loft helped my house sell faster. Plus, you pay for what you signed for, no hidden fees, furthermore timing was again to what was agreed! I would have no hesitation to recommend SimplyEasy Refurbs!
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FAQ Section

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Rear Extensions

How much does a rear house extension cost with SimplyEasy Refurbs?

The cost of a rear house extension depends on its size, design, structural requirements and chosen finishes. Features such as rooflights, large glass doors and a new kitchen will also affect your budget. Contact SimplyEasy Refurbs to discuss your plans and request a quote based on your project.

Do I need planning permission for a rear extension?

In England, some rear extensions fall under permitted development rights, meaning a full planning application may not be required. This depends on your property, the extension’s dimensions and any local restrictions. Larger extensions may require prior approval, and building regulations approval is a separate requirement. Check with your local planning authority before starting work

How long does it take to build a rear house extension?

The timeline depends on the extension’s size, complexity and scope of work. Ground conditions, structural alterations, material availability and weather can all affect construction. Allow additional time before the build for design, any necessary approvals and ordering materials. Request a project-specific schedule so you know what to expect at each stage.

Can a rear extension create a larger, open-plan kitchen and dining area?

Yes. A rear kitchen extension can provide space for an open-plan kitchen, dining area and family living space. Depending on the design, rooflights and glazed doors can introduce more natural light and connect the room to your garden. The layout should balance storage, seating and everyday movement through your home.

What is the difference between a single-storey and a double-storey rear extension?

A single-storey rear extension adds ground-floor space, making it suitable for a larger kitchen, dining room or living area. A double-storey rear extension adds space across two floors, potentially providing bedrooms or a bathroom upstairs as well. The right option depends on your budget, property layout and planning constraints.

Can I stay in my home while my rear extension is being built?

It may be possible to remain at home during construction, depending on the work involved and whether essential facilities remain accessible. Expect noise, dust and some disruption, particularly when the extension is connected to the existing house. Discuss access, temporary kitchen arrangements and any periods when moving out may be necessary before work begins.

Why choose Simply Easy Refurbs for your rear house extension?

A successful rear extension starts with understanding how you want to use your home. Discuss your ideas with Simply Easy Refurbs to explore your requirements, budget and preferred finish. Ask to see examples of previous extension work and request a detailed quote so you can make an informed decision about your project.

Enhance Your Home with a Rear Extension

To learn more about the benefits of a rear extension or to discuss your property in more detail, talk to our experienced SimplyEasy Refurbs team today.

We’re a member of the Federation of Master Builders, and offer free quotes and price matching on all projects.