House Extensions in Chiswick


We love working with local residents planning a house extension. We know house extensions in Chiswick might feel a bit intimidating, but there is no need to feel stressed. Red Box is a Which? Trusted Trader and a Trustmark registered company. As a specialist local business, we make sure everything runs smoothly for you.

Using the right house extension specialists in Chiswick can save you a lot of time and money. Creating new space in your home and improving the quality of life for you and your family shouldn’t be a hassle.

As house extension builders providing all the construction services you need, Red Box can make the many aspects and phases of an extension project run like a well-oiled machine. Leaving you with nothing to worry about except how to use your new space once the work is wrapped up. We can work on extensions of any size and shape, so whatever you have in mind, contact us for an up-front quotation. Looking for help with a home extension in Chiswick? At the very least, we can ensure you have all the information you need to move forward.

Other services in Chiswick

Chiswick Kitchen Renovations

Kitchen Renovation

Chiswick Bathroom Renovations

Bathroom Renovations

Chiswick Loft Conversion Thumbnail

Loft Conversions

Wandsworth Maintenance


Chiswick Painters and Decorators

Painters and Decorators

Kitchen Extensions In Chiswick

There can be few local companies who have successfully undertaken as many kitchen extensions in Chiswick as Red Box. As a result, we know the benefits having more space to cook, eat and entertain bring to families like yours. We understand period properties, newer buildings, planning regulations and working in tight spaces too. There are lots of reasons to contact us if you have kitchen extension plans, however ambitious.

We can start with your chosen kitchen extension design or from a blank sheet of paper. Whenever we talk, we will set your mind at rest and give you confidence. Our teams of professionals and tradespeople are used to making everything run smoothly.

They have become the kitchen extension builders Chiswick residents like you have come to trust. On hearing your plans, they can undertake a kitchen survey and provide a detailed quotation.

We pride ourselves on providing an open, upfront and transparent service at every stage of working with us. There are no unpleasant surprises from Red Box team. They deliver exactly what they promise.

Once the project is started, we allocate a local project manager who can work with any architect and kitchen designer you have in place to create the extra space you’ve been dreaming of.

Single Storey Extensions In Chiswick


Red Box works alongside Chiswick property owners on a range of single storey extensions These vary from simple single storey wrap around extensions and single storey rear extensions to more complex bespoke architectural solutions. Whatever the task requires, we enjoy helping families with more space and the improvements to their lifestyles it brings.

There are, of course, single storey extension roof options to discuss too. Our experts can advise you on every aspect of building and construction work. You may be asking ‘how much does a single storey extension cost?’ We would be delighted to provide you with a quote.

Chiswick house owners often ask us to paint and decorate completed extensions too. Red Box is a member of the Painters and Decorators Association, and also a Which? Trusted Trader and Trustmark registered. You can be confident we will produce high-quality finishes you can be proud of.

You can find a South London extension case study here, should you need some ideas. Our project gallery contains examples of Red Box extension projects that might prove useful too.

How much is a single storey extension worth to you? We know getting it right is priceless. That’s why we will allocate you a highly experienced project manager once we’ve been given the green light. They will keep everything running smoothly so you can rest easy.

Double Storey Extensions In Chiswick


We help a wide range of Chiswick property owners with double storey extension ideas. Red Box professionals and tradespeople understand how much such ambitious works mean to our clients. They involve a big investment of both time and money, but a lot of upheaval and hassle.

Creating wonderful new spaces is not easy, but double storey extension costs may be lower than you think both in terms of money but also disruption. Even if you just have a rough idea of what you want, it might be worth contacting us for an initial quotation to understand what might come next.

Once we have an understanding of your plans, even at an early stage, we can discuss the features and benefits of double storey rear extensions, front extensions, side extensions and wrap-around options. As well as dealing with your questions around the question ‘how much does a double storey extension cost?’, we can share double storey extension before-and-after examples with you. Let us help you picture your home with all that extra space.

We can do all this because we’ve learned what Chiswick homeowners like you value and always remember each double storey extension project is helping someone create their dream home.

Double Storey Extensions Chiswick

Case Studies

Areas We Serve

We cover all postcodes in and around the Chiswick area.

  • W4

Why Choose Red Box


We specialise in home improvements, extensions, kitchen fitting and bathrooms as well as the associated services of plumbing, electrical and full decoration work.

Our team work closely with architects and designers, either engaged by us or which you may have already engaged. We are happy to follow your design or work with you on a design to fit your budget and taste.

We’d love to hear from you!

For any questions please fill out the quick form on the right to drop us an email and we will be in touch.