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New red tile roof installation with skylights and chimney by Firmus Roofing & Building

Premium Garage Conversions in Winslow and Buckinghamshire

Are you looking to unlock the hidden potential of your home? At Firmus Roofing & Building, we specialise in transforming cold, underutilised garages into stunning, functional living spaces. Whether you dream of a quiet home office, an extra bedroom, or a spacious playroom for the children, our bespoke garage conversions breathe new life into your property.With over 15 years of industry experience, our expert builders deliver premium craftsmanship tailored to your exact needs. We manage everything from structural alterations to the final flooring, ensuring a seamless integration with your existing home.

A Simple Step-By-Step Journey to Your New Living Space

We believe that extending your living space should be an exciting, stress-free experience. Our process begins with a free, no-obligation structural survey at your property in Winslow or the surrounding areas. During this visit, we discuss your vision, assess the existing brickwork, and provide a transparent, detailed quote.Once approved, our skilled team handles every phase of the project. This includes expert architectural design, installing high-quality insulation, addressing any damp proofing requirements, and completing all electrical and plastering work. You are kept informed at every stage, ensuring your new room is delivered on time and to an exceptional standard. Contact our experts today on 01296 938085 to book your free survey.

Bespoke Garage Conversion Designs

Full Project Management & Building Control Compliance

Seamless Integration with Your Home

Premium Materials & High-Quality Insulation

10-Year Workmanship Guarantee

Expert roofers installing red clay tiles and lead flashing on a domestic property in Buckinghamshire.

Bespoke Design & Planning

Transform your unused space with Firmus Roofing & Building, a highly professional company. We specialise in bespoke garage conversions in Buckingham and throughout Buckinghamshire. From discussing the typical cost and average prices to managing local compliance, our qualified experts provide low, free quotes.

Premium Building Works

As leading local builders, we have expertly converted hundreds of garages across Bedfordshire, Northamptonshire, and surrounding areas like Thame. We ensure every conversion uses premium materials for maximum structural integrity, making us the top choice for your property improvement.

Fully Finished Spaces

We deliver a fully finished, high-quality garage transformation. Backed by over 15 years of experience and a 10-year workmanship guarantee, we typically complete projects on time with exceptional results. Ready to upgrade your home? Call 01296 938085 today to get started.

Why Converting Your Garage is a Smart Investment

A professional garage conversion is one of the most cost-effective ways to increase your property value without the hassle of moving. Instead of a dusty storage space, you gain a beautiful, warm room that actively improves your daily life. Because the outer structure already exists, the project timeline is often much faster than traditional house extensions.Furthermore, we prioritise energy efficiency by upgrading the insulation and installing modern flooring, which helps keep your heating bills under control. It is a highly practical solution for growing families or those needing a dedicated workspace at home.

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Expert tile roofing installation and leadwork by Firmus Roofing & Building on a Buckinghamshire home extension.

Areas We Serve

As trusted local builders, Firmus Roofing & Building proudly provides premium garage conversions across Buckingham, Aylesbury, and the wider Buckinghamshire area. Operating within a 25-mile radius, we transform homes throughout Bedfordshire, Oxfordshire, Northamptonshire, and surrounding towns including Thame.

A high-quality traditional felt flat roof replacement with skylights in Buckinghamshire.

Navigating Winslow Planning Permissions and Building Regulations

Dealing with local authority rules can feel overwhelming, but we are here to manage the entire compliance process for you. Most garage conversions fall under permitted development rights, meaning you may not need full planning permission. However, strict adherence to UK Building Regulations is legally required to ensure the space is safe, structurally sound, and energy-efficient.As experienced Buckinghamshire builders, we work closely with local building control officers throughout the project. If your home is a listed building or located within one of the beautiful conservation areas around Winslow, Buckingham, or Aylesbury, we carefully source sympathetic materials to match your existing brickwork perfectly.

Ready to transform your garage in Buckingham?

Call 01296 938085 For A Free Quote