Basement Conversions

As London space is at a premium, iceberg homes are becoming more popular throughout the capital. A basement conversion can add a huge amount of space to your home and improve the value of the house when you come to sell. Avian have a wealth of experience excavating and building basement conversions, and have worked extensively throughout Clapham, Wandsworth, Fulham, and Wimbledon.

Our experienced team has worked with some of Londons finest architects to design and build beautiful, high specification conversions. Our partners can apply for planning permission on your behalf to make your conversion simply and stress free.

Beautiful Basements

Our basements are used as family rooms, yoga studios, kitchens, guest bedrooms, and even home spas. They are designed and built to the highest standards to create functional, airy rooms that feel just like the rest of your home.

Light wells let in an unexpected amount of light so you will never feel like you are below ground level. Take a look at our case studies to see our past work and see just how spacious your basement conversion could be.


Flexibility and Choice

You have a number of options to make the most of your underground spaces. While we complete full and half-footprint basements, which are usually retro-fitted (ie. below your existing property and not in an existing basement space) We can also create under garden basements to increase the square footage of your home. Speak to us about your requirements and we will make recommendations based on your brief and the options available for your home.

Satisfaction Guaranteed

We have completed many basement conversions throughout London and have earned a reputation for quality builds, excellent customer service, and innovation. Our 100% satisfaction guarantee means that we don’t consider a job finished until you are absolutely happy.

Our experienced gained over the years has led us to develop an efficient and clean building process to minimise disruption and eliminate mess while we excavate and build your basement conversion. All of our excavation work is completed under cover, so your garden and home are left clean and unaffected by the work below ground.

ANY QUESTIONS? CALL 020 3174 1241
Case Studies

Loft Conversions Add a Fifth to Property Values

Loft conversions are one of the best ways to make your home more spacious – an intelligently-designed conversion can add as much as 30% more living space to your home without extending the footprint of your house. As with all home improvements, conversions also increase the value and sale-ability of your home. A study by […]

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The client wanted to make extensive improvements to her home in Wandsworth, including a loft conversion, a kitchen extension, and alterations to her existing lounge and one of the existing bedrooms. All of the work took around 12 weeks and they were extremely happy with the results.  


Avian Construction Ltd

Peterden House
1A Leighton Rd
West Ealing
W13 9EL

020 3174 1241