





Inviting a builder into your home is a big decision. That is why we carry insurance cover of up to £5 million and take a professional, careful approach to every project. With clear communication, high standards of workmanship, and the right protection in place, you can move forward with confidence.


At Construct Group Alpha, we design, plan, and build loft conversions across South London. We take care of things end-to-end. One team, one timeline, one clear price.
Reliable team of skilled staff
End to end support
Clear pricing and timelines
If you have questions about our work or how we can help you, get in touch.
Yes, we'll give you a fixed price and timeline based on the scope of your project.
This depends a lot on what you're looking to achieve and how you own your home. You can do a lot of loft conversions under permitted development. Get in touch and we'll determine what you need to complete your project.
On average extensions add 20% to a properties value. This changes a lot based on area, existing property size and similar factors but it is a safe bet that it will add value to your property.

We price transparently with a detailed schedule of works, so you know exactly what’s covered.
Foundations, structure, insulation to current regulations.
Electrics, plumbing, structural works all in one place.
Kitchens, bathrooms, all done by one trusted provider.
We start on site to understand how you live and what you want to change. We measure, check services and structure, and talk finishes so the budget’s real—not guesswork.
Discuss scope and options
Provide Itemised quote
Drawings and specifications
Your programme is locked in before we start. A dedicated PM keeps trades moving and updates you by WhatsApp/email so you always know what’s happening.
Site care throughout the whole project
Quality & compliance
Change Control taken care of
We finish cleanly and make sure everything works exactly as agreed. Then we stand by it. Snag free finish, with all certificates provided.
Snag free finish
Documents and certifications
Aftercare

We’re based in South London and focus our teams locally so we can start faster and keep sites well managed.
We cover:
Clapham
Brixton
Twickenham
Sutton
Richmond
Lambeth
Southwark
Croydon
Lewisham
Greenwich
And many more - if you don't see your area just get in touch.


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