- Welcome to Retrofitworks
- 0330 123 1334
- info@retrofitworks.co.uk
Cosy Homes London, delivered by RetrofitWorks, provides a complete retrofit service for self-funding homeowners in Greater London. We manage the entire process – from assessment to installation – ensuring quality, efficiency, and comfort in every project.
For homeowners, we make improvements stress-free by guiding you through each stage and sourcing trusted installers. For partners such as architects, designers, contractors, and councils, we offer a fully managed service that integrates smoothly with your client offer and delivers excellent results.
Our vision, purpose and values guide everything we do at Cosy Homes London. They reflect our commitment to quality, sustainability and building trust with both homeowners and industry partners.

To be London’s leading one stop shop for able-to-pay retrofits, trusted by homeowners and valued by industry professionals for delivering complete, high-quality solutions.

To provide a sustainable, profitable service that reduces reliance on short-term funding, strengthens the RetrofitWorks co-operative and creates opportunities for our members.

We minimise our carbon footprint, empower a diverse team, champion retrofit, challenge industry norms and deliver genuine value for every customer and partner.
We combine more than a decade of retrofit experience with a not-for-profit ethos to ensure every home improvement project is delivered with care, transparency and professionalism. Homeowners choose us for our tailored guidance, our network of vetted contractors and the reassurance of a smooth, well-managed journey from the first conversation to the final sign-off. Our reputation for integrity and quality means you can trust that every recommendation is in your best interest, giving you complete confidence that your home will be warmer, more comfortable and more energy efficient for years to come.
At Cosy Homes London, we make the journey to a warmer, greener home straightforward and stress free. Our three step process ensures you get clear advice, the right solutions and quality work every time.
We start with a thorough survey of your home to understand where energy is being lost and where improvements will have the greatest impact. We then create a tailored Whole House Plan, setting out the best measures to take and the order in which to do them.
Once you have decided which measures to go ahead with, our Retrofit Co-ordinators prepare a detailed technical specification. This ensures you receive accurate, like-for-like quotes from our vetted contractors.
We co-ordinate and oversee the installation process, managing contractors, timelines and quality checks. We sign off only when we are satisfied the work meets our high standards, so you can be confident in the results.
As a partner of RetrofitWorks, you gain a trusted delivery team committed to care, transparency and professionalism in every project. We provide your clients with clear, evidence-based plans, access to a network of vetted PAS-compliant contractors, and the reassurance of a smooth, well-managed process from first contact to final sign-off. Our reputation for integrity and quality means you can rely on us to represent your brand to the highest standards, helping you strengthen client relationships, protect your reputation and deliver exceptional results every time.
Whether you are a homeowner looking to improve your property or a professional seeking a trusted delivery partner, we would love to hear from you. Send us an email and our team will be in touch to discuss how we can help.