Home Extensions in Oxford

Delivering High-Quality, Long-Lasting Results

Creating more space doesn’t need to mean moving home. At Exelion, we deliver beautifully built home extensions across Oxford, combining decades of construction experience with the professionalism and rigour you would expect from a fully accredited main contractor. As a family-run business rooted in traditional values and supported by modern expertise, we manage every aspect of your project — from the earliest feasibility checks to the final handover — ensuring a smooth, safe and high-quality build at every stage.

Whether you’re expanding your kitchen, adding new bedrooms, creating an open-plan living space or transforming the layout of your home, we bring precision, reliability and a commitment to excellence to every extension we build across Oxford and Oxfordshire.

Why Choose Exelion for Your Home Extension in Oxford?

A successful home extension relies on far more than brickwork and construction. It requires careful planning, seamless coordination, strong communication and a contractor who understands the nuance of working on residential properties — especially in a city as architecturally diverse as Oxford.

Exelion is led by founder James Turnock, a construction professional with more than twenty-five years of experience and postgraduate qualifications in Senior Construction Project Management and Real Estate. As a member of the Chartered Institute of Building (CIOB), James brings a level of oversight, technical knowledge and accountability that ensures every project is delivered to exceptional standards.

From our accredited approach to health and safety to the way we manage trades, subcontractors and timelines, we create an experience that prioritises quality, client satisfaction and long-term value. With a deep understanding of Oxford’s housing stock — from Victorian terraces and period townhouses to modern family homes — we ensure each extension enhances the property’s character while providing the space and functionality families need.

Tailored Home Extension Services Across Oxford

Extensions are never one-size-fits-all. Your home, lifestyle and goals determine the right approach — and we tailor every project accordingly. Our experienced team handles the full range of home extensions commonly requested across Oxford, delivering solutions that are structurally sound, beautifully finished and built to last.

Rear Extensions in Oxford

Rear extensions are one of the most popular ways to create open-plan living areas, expand kitchens or increase natural light. We specialise in constructing rear extensions that blend seamlessly with your existing property, using quality materials, structural steel, high-performance glazing and modern insulation to create a warm, spacious and energy-efficient addition to your home.

Side Return Extensions

Particularly suited to Oxford’s Victorian and Edwardian terraced homes, side return extensions unlock unused space running alongside the property. The result is a brighter, wider and more functional layout — often transforming kitchens and dining areas into impressive, light-filled rooms perfect for modern living.

Two-Storey Extensions

A two-storey extension offers the biggest impact for growing families. Whether you want additional bedrooms, an en-suite bathroom or more ground-floor space, we manage the full process, including planning, structural engineering and safe execution. The result is a carefully integrated extension that feels like a natural part of your home, not an add-on.

Kitchen Extensions

A well-designed kitchen extension can significantly improve daily life and dramatically increase a property’s value — especially in high-demand Oxford neighbourhoods. We deliver kitchen extensions that maximise space, usability and natural light, coordinating structural works, utilities, ventilation and high-quality finishes to achieve a result that balances beauty with practicality.

Wrap-Around Extensions

For homeowners looking for a transformative change, a wrap-around extension creates a large, flexible space ideal for open-plan living, feature kitchens and multifunctional family zones. We ensure structural integrity, planning compliance and flawless integration with the original property.

Garage Conversions and Integrated Extensions

If a garage is underused, converting it into a functional living area can be one of the most cost-effective ways to expand your home. We transform garages into bedrooms, offices, utility rooms or playrooms, integrating them seamlessly into the main property with proper insulation, heating, electrics and structural compliance.

A Seamless, Fully Managed Extension Build from Start to Finish

At Exelion, we manage the entire extension process from concept to completion, providing a single point of contact and complete oversight at every stage. The journey begins with an initial consultation where we explore your goals and assess feasibility. If needed, we work alongside architects and designers to refine plans, ensure structural viability and prepare applications for planning permission or permitted development.

Once approvals are in place, our team coordinates all trade disciplines — groundworkers, bricklayers, carpenters, electricians, plumbers, steel fabricators and decorators — ensuring each stage progresses smoothly and safely. Structural elements such as foundations, brickwork, load-bearing walls and steelwork are completed to exacting standards, followed by roofing, insulation, glazing and internal works. Throughout, we maintain strict adherence to building regulations and health and safety requirements.

Every extension is finished with the same attention to detail that defines our company. From carpentry and plastering to final decoration, we ensure the space is delivered to a high, durable standard and ready for you to enjoy.

Local Knowledge — Building Extensions in Oxford

Building in Oxford requires a nuanced understanding of local regulations, planning constraints and the architectural character of the area. Conservation zones, heritage considerations and long-established neighbourhoods are common across the city, from Jericho and Summertown to Headington, Cowley and Iffley.

Our familiarity with Oxford City Council’s planning guidance, typical housing structures and local building expectations helps to prevent delays and ensures each project aligns with both client aspirations and statutory requirements. Whether you’re extending a Victorian terrace or a newer suburban home, our knowledge reduces risk, improves efficiency and ensures compliance from the outset.

Add Space, Comfort and Value to Your Oxford Home

A home extension is one of the most impactful investments you can make, offering the chance to tailor your home to your lifestyle without the upheaval of moving. In a property market as desirable as Oxford’s, extensions can significantly enhance your home’s value while improving comfort, flow and usability.

Many homeowners choose extensions to gain more natural light, create open-plan living areas, add bedrooms or build multifunctional spaces such as offices or family rooms. By focusing on durable construction, safety and long-term performance, we ensure every extension adds lasting value for both daily living and future resale.

Our Commitment to Quality, Safety and Professional Standards

Quality, safety and integrity form the foundation of Exelion’s approach. We operate as an accredited main contractor with a strong focus on health and safety best practice. Our standards, combined with professional oversight from a CIOB-qualified industry expert, ensure every project is delivered with transparency, precision and respect for both the property and the people living in it.

Clients trust us for our communication, our reliability and our commitment to delivering work that stands the test of time. From the initial consultation to the finishing touches, we maintain exceptional standards that reflect our values as a family-run business.

Home Extensions Across Oxford and Oxfordshire

We proudly deliver home extensions throughout Oxford and the wider county. Our core service areas include:

Oxford — Summertown, Jericho, Marston, Headington, Iffley, Cowley, Botley, Cutteslowe
Oxfordshire — Abingdon, Bicester, Kidlington, Witney, Banbury, Didcot, Wantage, Thame, Wheatley and surrounding villages

If your property is located in or around Oxfordshire, we are well placed to support your project from start to finish.

Start Your Oxford Home Extension Project with Exelion

If you’re ready to transform your home with a beautifully built extension, our team is here to guide you every step of the way. With decades of experience, accredited practices and a genuine commitment to quality, we deliver spaces that enhance how you live today — and stand strong for years to come.

Get in touch to arrange your consultation and begin planning your home extension in Oxford.