House Extensions

Our house extensions can save you money

On average, it is £1000 cheaper per square metre to increase the ground space of your existing home, rather than moving to a property with a floor area comparable to the house plus its finished extension. And by extending a home you already know, you can turn your property into the house you’ve always wanted. You won’t just save money on upsizing: you’ll keep everything you already love about the place you live in already.


Our professional standards

Our house extensions are designed by qualified civil and structural engineers, and built by outstanding local tradespeople.


We only use tradespeople with significant experience and current qualifications, whose work is of the highest quality.


From master joiners and carpenters to outstanding plasterers and painters and decorators, our house extensions are the complete package: local work, brilliantly designed and built by local people.

Call us –  07983 304 952

Look after the heart of your home with our extraordinary kitchen extensions

The kitchen is one of the most used rooms in your home. A place where your family lives, loves and laughs on a daily basis. It’s not just the room where you cook food –
it’s often the place where you eat, entertain and even work. Our kitchen extensions are designed to help you make the most of the space available, creating a light, beautiful heart for your property.

London’s period properties often have small ground floor kitchens, which can be extended by building out into their long gardens or side passageways.
The result is a bright, airy and modern living and cooking area that brings family and friends together. We’ve created kitchen extensions in keeping with the period nature of London properties, and we’ve also designed spectacular modern cooking and eating areas for London homes. We’ve even created kitchen extensions with glass walls and roof lights, bringing the night sky right into your dining area. There’s no limit to what we can achieve for you!

Change the way you look at space with a side extension

London properties often waste ground space with unused side returns, which are perfect for increasing the footprint and value of the home. A side house extension can add significant extra footage to your property, and is perfect for extending living areas and kitchen areas, or adding an office, extra bedroom or bathroom.

Side house extensions are also ideal for creating extra area on first and second floors. Increase the storeys of your extension to maximise internal space.

Planning comes with every house extension

Every house extension we create includes all the planning permissions you need. We’ll get your planning permission in plenty of time, and keep Building Regulations  informed of the progress to your work, with all relevant site inspections booked and managed by your project manager. Our management staff are all qualified and experienced structural and civil engineers, and our planning and design staff are well-known to the local authority departments responsible for granting your applications.

We take care of everything - all you have to do is enjoy your newfound space.

We know structure

Many house extensions, particularly side and back extensions to Victorian and Edwardian London properties, require structural alterations. Our management staff are qualified to design, apply for permission and install minor and major structural solutions, including cantilevers and RSJs. We undertake a full structural survey of your property at the planning stage of your house extension, and build the remedies into your design. From foundations to rafters, there’s no problem we can’t overcome.

We come recommended

Our clients are delighted with the work we do, and we believe that’s the best recommendation of all. We’ll be happy to arrange for you to visit some of our previous projects, and hear real endorsements from the people who matter – our customers. And it’s not just the quality of the finished extension that our clients are so happy with. We work hard to keep disruption to a minimum and efficiency at a maximum, resulting in outstanding value and reliability.

We're experts in creative space use

London’s streets are full of properties whose potential isn’t being used. Our designers and project managers are geniuses with space. We can use master carpenters to create fitted furniture for your house extension, maximising the use you get from smaller or oddly-shaped ground areas, and open out existing rooms into new footprints that bring them to life.


Transform your home with an 'ASE Design and Build' loft conversion, extension or refurbishment. We design, manage and build to create beautiful spaces for homeowners in South West London and the surrounding area.

Our project managers are all qualified structural engineers with significant experience working in the UK building industry read more >>

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Contact Us

Unit 205, 29 Castle Street, KT1 1DN

Mobile: 07983304952