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Spray foam insulation installed in a residential loft space by Firmus Roofing & Building.

Transform Your Home with Premium Loft Conversions in Oxford

Are you looking to maximise your property's potential without the stress and expense of moving? At Firmus Roofing & Building, we specialise in delivering premium loft conversions in Oxford and across Oxfordshire. Whether you envision a luxurious master bedroom suite, a quiet home office, or a spacious playroom for the children, our bespoke solutions are designed to seamlessly blend with your existing home.With over 15 years of industry experience, our skilled team manages everything from the initial design phase through to the final coat of paint. We are experts in a variety of styles, including simple Velux installations, spacious dormer conversions, and complex hip-to-gable transformations. Every project is crafted to the highest standard, ensuring structural integrity, superior insulation, and beautiful bespoke finishes.Ready to unlock your home's hidden space? Call our building experts today on 01296 938085 to request your free, no-obligation survey.

Our Simple Step-by-Step Loft Conversion Process

We believe that extending your home should be an exciting, stress-free experience. That is why we manage the entire loft conversion process for you, ensuring every detail is handled with precision and care.Free Initial Survey: We visit your Oxford property to assess your loft space, discuss your ideas, and determine the most suitable conversion style.Design and Planning: Our experts help you navigate the design phase, ensuring the proposed layout maximises headroom, natural light, and usable floor space.Structural Work and Build: Our experienced builders carry out all structural alterations, roof modifications, and flooring installations with minimal disruption to your daily life.Finishing Touches: From premium insulation and custom staircases to plastering and lighting, we deliver a turnkey solution ready for you to enjoy.Our collaborative approach means you are kept informed at every stage, resulting in a beautiful new space delivered on time and within budget.

Bespoke Dormer, Mansard & VELUX Conversions

Full UK Building Regulations Compliance

Seamless Integration with Existing Architecture

Over 15 Years of Local Craftsmanship

Backed by a 10-Year Workmanship Guarantee

Dormer loft conversion with vertical tile-hanging and leadwork by Firmus Roofing & Building in Aylesbury.

Expert Design & Local Planning

Every successful loft conversion starts with meticulous planning. We handle structural engineering assessments and ensure full compliance with Buckinghamshire building regulations, Party Wall agreements, and permitted development rights to ensure your new space is safe and legally compliant.

Premium Materials & Insulation

Leveraging over 15 years of trade expertise, we source only top-tier materials. From energy-efficient VELUX windows to high-grade thermal insulation and matching exterior finishes that respect local Conservation Areas, we ensure your attic extension perfectly complements your home.

Flawless Construction & Build

Our fully insured master craftsmen manage the entire build with minimal disruption to your daily life. Backed by our comprehensive 10-year workmanship guarantee, we deliver a seamless transformation, from structural timber work and roofing adaptations to the final coat of plaster.

Why Invest in an Attic Conversion for Your Property?

Transforming your unused attic space offers a wealth of benefits that go far beyond simply adding an extra room. It is one of the most cost-effective ways to enhance your lifestyle and future-proof your home.First and foremost, a well-executed home extension significantly boosts your property value. In a competitive market like Oxfordshire, an additional bedroom or bathroom makes your home highly attractive to future buyers. Furthermore, upgrading your roof space allows us to install modern, high-performance insulation. This vastly improves your home's thermal efficiency, helping to retain heat during the winter months and potentially lowering your utility bills.Choosing to convert your loft also saves you the immense cost and hassle of moving house. You get to stay in the neighbourhood you love while gaining the exact space your growing family needs. Speak to our specialists today on 01296 938085 to discuss how an attic conversion can transform your living space.

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

Areas We Serve

Proudly providing premium loft conversions and transformative building services across a 25-mile radius of Aylesbury. As your trusted local experts, we serve homeowners in Buckingham, Thame, Wendover, High Wycombe, Milton Keynes, and the surrounding regions across Buckinghamshire, Bedfordshire, Oxfordshire, and Hertfordshire.

Expert pitched roof tile installation and repair in Buckinghamshire by Firmus Roofing & Building.

Navigating Oxford Planning Permissions and Building Control

Undertaking structural building alterations can feel daunting, especially when navigating local authority rules. As a trusted local builder, Firmus Roofing & Building ensures your project is fully compliant from day one.Many loft conversions fall under permitted development rights, meaning you may not need full planning permission. However, every project must comply strictly with UK Building Regulations, covering vital aspects such as fire safety, structural stability, and thermal efficiency. We manage all building control inspections on your behalf to guarantee everything is signed off correctly.For homes located in Oxford's beautiful conservation areas or listed buildings, we are highly experienced in securing the necessary approvals. We use sympathetic materials—such as heritage roofing tiles and matching brickwork—to ensure your new dormer or Velux loft respects the local architectural character. We can also advise on and facilitate Party Wall Act agreements if your property is semi-detached or terraced.

Ready to transform your Buckingham home with an expert loft conversion?

Call 01296 938085 For A Free Quote