Frequently Asked Questions

Generally the cost of a home conversion depends on the project type and specifications. A loft conversion typically ranges from £50,000–£130,000, a rear extension from £60,000–£150,000, and a full house refurbishment depends on size and finishes. We provide a detailed, fixed quotation after an on-site survey so you know exactly what’s included. Every home is unique, so we tailor prices to your needs while ensuring excellent workmanship and great value. We cover London and surrounding areas.

Project timeframes vary based on size and complexity. A standard loft conversion can take 6–8 weeks, while a rear extension or full refurbishment may take several months. We provide a personalised schedule before work begins, outlining each stage from demolition to completion. Our experienced builders work efficiently to keep your construction project on time, while ensuring every detail is finished to the highest standard. Regular updates mean you always know how work is progressing.

Some loft conversions and home extensions are classed as permitted development, while others require planning permission. We work with trusted architectural designers, planning consultants, Party Wall Surveyors to guide you through the process and prepare all necessary documents. Contact us on info@rsdmlimited.co.uk to discuss your project requirements and find out the exact permissions needed before starting construction.

Yes -all our building work comes with a 10-year structural guarantee for peace of mind. We have an Insurance Liability cover of up to 10 million. This means that in the unlikely event of any structural defects, you’re fully protected. We use qualified tradespeople, high-quality materials, and proven construction methods to ensure your loft conversion, extension, or refurbishment is built to last. Our commitment to quality doesn’t end on completion -we’re here for aftercare and ongoing support long after your project is finished.

We set up dedicated welfare facility on every site, including a secure office area for administration and a portable toilet placed to ensure your personal sanitaryware is not used during construction. Our goal is to keep your construction site tidy, organised, and self-contained should you be living in during any of the construction phases so you can go about your daily routine with minimal disturbance. Cleanliness, safety, and efficiency are always at the forefront of our work.

Yes -you can often remain at home during your loft conversion or extension. This depends on the project’s scope of work and will be confirmed during our health and safety assessment. We take extra precautions if children are present, such as securing scaffolding and access points. Our builders plan work areas to minimise disruption and maintain your comfort, while keeping your family’s safety the highest priority throughout the construction process.

Yes - we offer full project management from design to completion. We coordinate every trade and material delivery, keeping your project on time and within budget. With one point of contact, you avoid the stress of juggling multiple contractors. Our experienced team delivers a seamless service so you can enjoy the transformation of your home without the hassle.

Yes - our service can include architectural design, planning applications, and technical drawings. We work with trusted architects to create designs that are functional, stylish, and compliant with UK building regulations. Whether you’re planning a rear extension, loft conversion, or complete refurbishment, our joined-up approach ensures smooth communication, fewer delays, and a design that works in real life -not just on paper. We handle the details so you can focus on the end result.

We handle most aspects of your home renovation for you, but you’ll be involved in selecting finishes like kitchens, bathrooms, flooring, room layout, and paint colours. We’ll give you a clear timeline for these decisions, so your project stays on track. If you prefer, we can recommend suppliers, arrange samples, and manage orders. This way, your vision is achieved without you needing to oversee every stage of the construction process.

Our payment terms are transparent and agreed before work starts. Typically, this includes a deposit, staged payments linked to key milestones, with a outlined rates sheet should there be any variations during the project, and a final balance on completion. This allows you to manage your budget effectively and whilst there may be unforeseen variations we will have outlined and agreed our operative trade rates for the different options to provide full transparency within the scope. With every Valuation/Invoice your project scope of work is itemised with a completion percentage for your approval.

A specialist home conversion company brings experience, precision, and reliability. We focus exclusively on loft conversions, extensions, and refurbishments, meaning we understand the technical challenges and how to avoid costly delays. Our skilled team delivers high-quality results with clear communication and a tailored personal touch. Many of our projects come from referrals -proof of our excellent customer service and craftsmanship. Choosing specialists means your project is in safe, experienced hands from day one.

Yes - we can arrange for you to speak to a past client with a similar project (with their permission) and, where possible, visit a completed loft conversion or extension in person. Alternatively, our online portfolio showcases many of our completed projects, giving you confidence in our workmanship and attention to detail. Transparency is important to us, so we’re always happy to provide references and real examples of our work.

We provide quotes based on the complexity of the project. For smaller works, expect a detailed quote in 3–5 working days. Medium-sized projects take 5–7 working days, while large or complex builds may take 10–20 working days. This ensures we fully assess your requirements, measure accurately, and price fairly. Every quotation is clear and itemised, so you know exactly what’s included before you commit to your home conversion or extension project.