Attic & Loft Conversions In Greenwich

Are you looking to expand your home without taking up valuable outdoor space? Want to add in an extra bedroom and ensuite? Or perhaps you want to increase the value of your home?

Whatever the reason for your interest in a loft conversion, you’ve found the best company for the job, Clapham Construction Service, loft conversion specialists in London. 

Here at Clapham Construction Service, we have been carrying out loft conversions in Greenwich and beyond for over twenty years. During that time, we’ve carried out more loft conversions than we can count, all with their own design requirements.

For over 20 years, we have helped families and professionals in London discover hidden potential in their homes. Our approach blends technical skill with a commitment to transparency, quality, and reliable timelines, all backed by a 10-year warranty and £10 million insurance coverage for complete peace of mind.  

Key Takeaways

• Transparent, fixed pricing for every Greenwich loft conversion
• 20 years’ specialised experience and local expertise
• Delivery on schedule; 95% of projects completed within agreed timelines
• Weekly progress updates and daily site visits
• 10-year warranty and £10 million insurance coverage
• Service areas: Greenwich, Eltham, Charlton, and South London
• Every element managed in-house; no subcontractors, ever

A loft conversion in Greenwich typically costs between £25,000 to £65,000, influenced by the project’s size, design, and specific requirements.

Have you experienced project overruns, lack of updates, or workmanship issues with other contractors? You are not alone, over 70% of London homeowners list these as their biggest concerns. We address these directly:  

• Schedule certainty: 97% of our Greenwich and Eltham loft conversions finish within the planned 8–10 week window (as of Q1 2025, site logs).
• No budget surprises: Our quotes are fixed with all design, planning, and build costs upfront, always confirmed in writing.
• Consistent communication: Daily updates and weekly progress reviews ensure you always know what is happening.

Here at Clapham Construction Service, we’ve become one of the most trusted companies throughout London, not just for our craftsmanship but for our expertise and knowledge.

Our service will take you through every stage, from planning and design through to the finished project and what’s more, we’ll take the stress from you by project managing every stage for you. You’ll have a single point of contact whom you can speak to at any time you wish for full transparency and continued updates throughout the project.

Quality Building Materials

We’re so confident in the quality of our work that we offer a ten-year warranty on all of our construction. During the ten years following your completed project, we’ll happily answer any and all questions you may have, providing advice and guidance where and when needed.

We build our loft conversions in Greenwich and beyond to last and that’s exactly what they do. James, from Clapham, shared: “Choosing Clapham Construction was the best decision we made for our home. Paul and Dangis were exceptional in their communication and quality of work.” (Trustpilot Review)