Loft Conversions

A warm, inviting and beautifully realised loft extension can transform your home and provide a sanctuary at the top of your house. Goldenkey Constructions understands that everyone is different and that we all want designs and products that reflect our individual tastes and personalities. That is why we work hard to understand the loft extension you really want and then offer a service that fully delivers it.Our full loft extension service in London includes working closely with you and your selected designers to realise your dreams for your home. We manage and coordinate all the people who will make your loft extension a reality.We carry out all the structural, cladding & roofing and internal finishes works within our long-established team, including heating & plumbing, plastering, flooring, tiling, kitchen fitting and decoration. We work with carefully selected partners for specialist installations such as electrical works and external windows & doors.
We understand that undertaking a loft extension in London is a daunting prospect. You will only do it once, so you want to get it just right. We will support your right through the process, helping you to set priorities and to make the right choices at the right times to allow your project to flow smoothly from start through to flawless completion.

Basement Conversions

Goldenkey constructions can take care of all aspects of a bespoke basement conversions from the design, excavation of core base, waterproofing, tanking, construction to fit outs and renovation of existing cellars and basements. Our own construction team will undertake the whole fit-out phase of the basement conversion project. The major benefit of our service is that you can work with a single team of specialists under one roof.Over past years we managed to transform exceptional basement spaces. We combined client ideas and our expertise in constructing bespoke basements.
A basement is the ideal way to extend your living space in London. From designer bathrooms and kitchens to wireless media rooms, flood-lit swimming
pools and walk-in wine cellars, a basement development opens up a w world of possibility. So let us create your dream basement!


The kitchen is the heart of the home, so creating a practical space that combines cooking, eating and living can greatly improve quality of life. Instead of being tucked away at the back of the house, kitchens are design statements, and building an extension can be the ideal way to create a dynamic space that works for modern day family life. Goldenkey Constructions offers a comprehensive service, designed to simplify the process of planning and constructing your extension. We can even setup temporary kitchen facilities allowing homeowners to remain living in the house throughout the build.

We, at Goldenkey Constructions, are very concerned to make sure that whilst you live in your home through the works, we are courteous and respectful house guests. Issues such as keeping your home tidy and making sure that you have the minimum of disruption right through the project are really important, as your family must be able to keep functioning happily at all times.