Sigma construction group Ltd.

The process starts with a free consultation and design. We then handle any planning or building regs needed. The build typically includes insulating walls, installing windows/doors, electrics, plumbing, plastering, and finishes. We manage everything from start to finish with minimal disruption, transforming your garage into a fully functional living space.

Key factors include the height of the loft (at least 2.2m ideally), roof structure type, and access space for a staircase. If the roof space is sufficient and your property isn’t in a conservation area, it’s usually suitable. We carry out a free inspection to advise on potential layout and feasibility.

A loft conversion starts with an initial survey to check if your loft is suitable. Once confirmed, we work with you on the design and obtain any necessary planning permission or building regulation approvals. The construction stage involves structural work (steel supports if needed), flooring, roof windows or dormers, insulation, electrics, plumbing (if needed), and staircase installation. We then complete the plastering, decorating, and final finishes. From start to finish, we manage the entire project to ensure a smooth and high-quality transformation.

Sigma Construction Group Ltd has been proudly serving clients across London and Kent for over 8 years. During this time, we’ve built a strong reputation for delivering high-quality workmanship on everything from loft conversions and house extensions to full renovations and commercial fit-outs.

All of our work at Sigma Construction Group Ltd comes with a minimum 12-month workmanship guarantee, and many of our structural projects are backed by up to 10 years of warranty, depending on the scope. We also work with certified electricians and Gas Safe engineers, so all installations come with relevant certifications for your peace of mind.

What we love most is seeing a project come to life — taking someone’s vision and turning it into a beautiful, functional space they can enjoy every day. Whether it’s a new kitchen, a loft conversion, or a full extension, the satisfaction of transforming homes and making our clients happy is what drives us every day.

After years of working in the construction industry and gaining hands-on experience, I saw an opportunity to do things differently — with a stronger focus on quality, communication, and client satisfaction. I wanted to build a company that people could genuinely trust, where every project would be handled with care and professionalism. That’s what led to the creation of Sigma Construction Group Ltd.

At Sigma Construction Group Ltd, we deliver top-quality construction services with a focus on reliability, craftsmanship, and client satisfaction. Our experienced team combines industry expertise with a commitment to meeting deadlines and budgets, ensuring every project is completed to the highest standards. We prioritize clear communication, transparency, and personalized solutions, making us a trusted partner for all your construction needs.

Yes, we do some services remotely to make things easier for you. We can have video calls to discuss your project, review photos or videos of the site, share updates online, and work with you on designs and permits through the internet. This helps keep the project moving smoothly even if we’re not always on site together.

At Sigma Construction Group Ltd, we take your safety seriously. We follow all recommended health guidelines, including wearing masks, practicing social distancing on site, and regularly sanitizing tools and equipment. We also limit the number of people on site to reduce contact and offer remote consultations whenever possible to keep everyone safe.