What Is Building Decarbonisation? Process Explained

Photo of a solar panel on top of a building.

The built environment is one of the biggest contributors of carbon emissions, which means it offers a significant opportunity for change and improvement. As the UK approaches challenging net-zero targets, decarbonising buildings such as offices, hospitals, schools, and homes has become essential. But what is building decarbonisation?

In this article, we explore what this term means, why it is vital, and how Willmott Dixon Interiors assists customers in advancing their journey towards a net-zero carbon future through our Decarbonise Today service.

What Is Building Decarbonisation?

Building decarbonisation is the process of reducing and, ultimately, eradicating the carbon emissions associated with the construction, operations, and maintenance of buildings. This is primarily achieved through measures such as enhancing energy efficiency and transitioning from fossil fuels to renewable energy sources. 

Why Is Building Decarbonisation Important?

According to the World Green Building Council, buildings are responsible for 39% of the global energy-related carbon emissions; 28% stem from operational emissions, and 11% from construction and materials.

Climate change is real, and every year, our planet is suffering from its effects more and more. With the pressing need for action to be taken, over 2,000 organisations have committed to net-zero targets by the year 2030. To help achieve these targets, the built environment must start decarbonising, and buildings across both the public and private sectors need to be improved and upgraded.

What Are the Benefits of Decarbonising Buildings?

There are numerous advantages to building decarbonisation, including:

    • Reduce reliance on fossil fuels: By replacing gas or oil heating with alternatives, such as heat pumps and solar power, buildings become less dependent on traditional and more harmful energy sources.
    • Conserve energy: Making upgrades like better insulation, efficient LED lighting, and smart Building Management Systems (BMS) reduces the amount of energy a building requires to run.
    • Reduce energy costs: Utilising less energy and generating more from renewable sources helps to lower energy bills and protects against fossil fuel price fluctuations and increases.
    • Future-proofed buildings: Decarbonising buildings makes them more adaptable to future regulations and environmental challenges.
    • Combat climate change: Reducing carbon emissions helps tackle climate change and has a positive environmental impact. 

Decarbonise Today: Our End-to-End Process

Willmott Dixon Interiors recognises the urgency and importance of combating climate change, which is why we have developed our “Decarbonise Today” service offering. We partner with customers in both the public and private sectors, assisting them with their decarbonisation journey by improving and upgrading buildings.

Working with our expert team allows you to implement decarbonisation measures at scale, make rapid progress towards your carbon reduction goals, and accelerate progress towards a net-zero carbon future.

Decarbonise Today helps you work through the decarbonisation process from beginning to end, and we can support you at any point of the journey.

Image showing Willmott Dixon Interiors’ Decarbonise Today process.

1. Setting Your Objective 

The first step involves defining your ambitions for the project. Establishing clear objectives ensures that both the brief and ensuing business case align with your long-term goals.

2. Estate Review

Next, an analysis of your existing stock is undertaken, generally through surveys, site visits, and sharing building information. This allows insight into your current building performance and identifies where the biggest issues lie and where support is most needed.

3. Decarbonisation Planning

Once all the insights have been collated, a plan can be formulated for how you can attain your goals. Included in this plan will be a process that features design, timelines, and approximate costs.

4. Business Case

Decarbonising your stock is a substantial investment, and so it is crucial that the process is understood around your business, including how it will be carried out, the associated costs, and the numerous benefits. For this reason, Willmott Dixon Interiors helps develop a strong business case for approval.

5. Design Development

Engagement begins with specialist consultant partners to design a customised solution that meets your building’s requirements while also optimising energy efficiency and reducing carbon emissions. We understand that every one of our customers has different needs, and so we tailor our approach in order to meet them.

6. Funding Investment

Once the design and approach have been agreed, our Decarbonise Today service can assist with investment opportunities and funding applications, so that as much financial support as possible is secured for the project.

7. Solution Delivery

We work closely with you to ensure that your existing buildings stay fully operational throughout the works. We understand how imperative it is for your business to continue to run without disruption, so we reduce the need for temporary closures or decanting wherever possible.

8. Monitoring and Support

As part of our decarbonisation service, we offer a package that provides performance data, alongside additional learning, training, and adjustments where needed. This ensures that our customers fully benefit from their upgraded buildings and can effectively measure the impact of the process.

Did You Know? Willmott Dixon Interiors runs CPD sessions to support NHS decision-makers on their net-zero journey. Watch our June 2025 session on Delivering a Net Zero NHS – Practical Steps to Decarbonisation, and register for our next event on 30th September: Delivering Low-Carbon Upgrades in Live NHS Environments.

Case Study: Somerset County Council

Somerset County Council reached out and commissioned us to deliver quantifiable carbon and energy savings through a programme of decarbonisation works.

  1. At Somerset County Hall, an estate-wide programme of improvements was carried out, including the installation of new windows, photovoltaic (PV) panels, and an Air Source Heat Pump, as well as enhanced roof insulation and upgraded cladding.
  2. At Somerset County Library, we installed new LED lighting and upgraded the air handling units by utilising the existing distribution system. Our approach was carefully planned to minimise disruption as much as possible, allowing the library to remain fully operational throughout the works.

As a result, these improvements are estimated to deliver annual energy savings of around 105,000 kWh, successfully delivering significant carbon and energy savings.

To explore our process in more detail, and to see how we have effectively helped other organisations, explore our Decarbonise Today brochure.

If you’re interested in learning how our Decarbonise Today service can help your organisation in achieving net-zero objectives, we invite you to get in touch. Willmott Dixon Interiors is ready to discuss tailored solutions that align with your specific business needs to progress toward a carbon-neutral future.

Joe Gallagher

With 19 years of experience and over 500,000 square ft of CAT B office fit-outs delivered in London’s most prestigious locations, Joe Gallagher is our CAT B fit-out project lead. His portfolio reflects over £110 million worth of commercial office fit-outs for customers ranging from banks, media brands, and tech companies to developers and management consultants.

Why we do it

By keeping buildings alive, we preserve their history while ensuring they remain relevant, sustainable, and functional in a changing world. Our work is about more than just refurbishment—it’s about creating spaces that inspire, support communities, and provide lasting value.

Let’s work together to transform spaces, ensuring they stand the test of time while meeting the needs of today and the future.

How we do it

A heritage of trust and reliability: With over 172 years of success, Willmott Dixon Interiors is part of one of the UK’s most established construction companies. Our long-standing reputation means you can trust us to deliver with the highest standards of quality, and that you are partnering with a company that is secure and dependable, especially in an industry where financial stability is crucial for project success.

Transparent and reliable project management: We prioritise on-time and within-budget delivery. Our clear communication and proactive approach ensure that you stay informed throughout the project, giving you peace of mind from start to finish.

End-to-end project management: From feasibility studies to design and delivery, our expertise ensures projects run smoothly, on time, and within budget.

Expert procurement support: We simplify the tender process and guide customers through procurement frameworks, ensuring compliance and efficiency.

Sustainability-focused solutions: With a dedicated in-house team, we align every project with our ambitious sustainability goals, minimising waste and integrating energy-efficient solutions.

 

What we do

We specialise in the fit-out and refurbishment of buildings across multiple sectors, from offices and healthcare facilities to hotels, retail, and secure environments. Whether it’s breathing new life into a heritage building, modernising commercial spaces, or ensuring critical environments remain fully operational during works, we are committed to delivering projects with precision and care.

Key areas of focus:

A trusted team and supply chain: Our people are what make us stand out. From project managers to site teams, we bring a wealth of experience and a proactive approach to every project. We also support our supply chain partners with a 28-day payment term and a commitment to fair treatment, ensuring high-quality materials and timely execution.

Seamless design and build delivery: If required, our integrated design and build services streamline the process from RIBA Stage 2 or 3 to completion, saving you time and effort.

Live environment expertise: We excel in delivering projects in occupied and secure environments with minimal disruption, ensuring business continuity and safety.

Long-Term partnerships: We believe in building relationships based on trust, performance, and transparent communication, ensuring every project we deliver contributes to your ongoing success. Many of our customers return to us time and time again, a testament to our commitment to quality and service.

Attention to detail: From appointment to final handover, we focus on creating environments that not only meet but exceed expectations. Our rigorous quality assurance processes ensure every element of a project is delivered with precision.

Sustainable refurbishments: We pledge to be net-zero operational carbon by 2030 and have a net-zero supply chain by 2040. Our projects focus on energy efficiency, waste reduction, and the use of sustainable materials.

TRUSTED TEAM AND SUPPLY CHAIN

We are supported by a trusted supply chain, guaranteeing the use of high-quality materials, and ensuring timely project execution. Our long-standing relationships allow us to deliver excellence on every project.

ATTENTION TO DETAIL

From our appointment to the final handover, we focus on creating office environments that not only meet but exceed your expectations. Our attention to detail ensures that your space is functional, beautiful, and aligned with your business goals.

SUSTAINABILITY

Our dedicated in-house team ensures that every project aligns with our ambitious sustainability goals. As a business, we are committed to achieving a net-zero status by 2030, and we hold ourselves accountable at every stage of our operations. From minimising waste through innovative recycling programs to selecting sustainable materials and incorporating energy-efficient practices, we focus on reducing environmental impact.

COMMITMENT TO LONG-TERM PARTNERSHIPS

We believe in building relationships based on trust, performance, and transparent communication. Our goal is to create long term partners, ensuring that every project we deliver contributes to your ongoing success.

SEAMLESS DESIGN AND BUILD DELIVERY

If required our integrated design and build services can streamline the process from RIBA Stage 2 or 3 to completion, saving you time and effort. With in-house design capabilities and relationships with external design partners across all disciplines it gives us full flexibility to develop a tailored approach for each project.

PROVEN EXPERTISE

With extensive experience in the commercial fit-out market, we understand how to deliver projects that meet your unique needs. Our team has completed a wide range of traditional and design & build, high-quality fit-outs across multiple sectors.

TRANSPARENT AND RELIABLE PROJECT MANAGEMENT

We prioritise on-time and within-budget delivery. Our clear communication and proactive approach ensure that you stay informed throughout the project, giving you peace of mind from start to finish.

A HERITAGE OF TRUST AND RELIABILITY

Backed by over 172 years of success, Willmott Dixon Interiors is part of one of the UK’s most established construction companies. Our long-standing reputation means you can trust us to deliver with the highest standards of quality, and that you are partnering with a company that is secure and dependable, especially in an industry where financial stability is crucial for project success.

Learning and Development

We believe continued learning and development is crucial to our team’s everyday needs. Our internal L&D system, Willmott Dixon University, supports a wide range of courses for all of our people to ensure they are best-equipped to perform well in their job roles.

We are able to offer unlimited opportunities to those with the ambition to take their career to the next level and work in a stimulating environment. By offering 4 levels of management development programmes, we are able to provide the skills you need to help reach your potential.

Professional Qualifications

We believe that our teams should continue to have ongoing development both in and out of construction and are committed to assisting them in becoming qualified within a professional qualification of their choice.

Management Development

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Technical Apprentice Programme

Apprenticeships are a great route into construction. At Willmott Dixon, apprenticeships are available in our business support teams and also through our supply chain partners or our sister company, Fortem, in trade disciplines such as bricklaying.

We offer some entry level positions for those who are looking to take their first steps into construction. With a paid apprenticeship you will earn while you learn and obtain a Level 3 qualification. You can apply following GCSEs; you don’t to have a construction background to complete an apprenticeship.

Work Experience

Work experience is a great way to get an insight into working at Willmott Dixon and is an ideal opportunity to experience the different jobs available, whether you are new to the world of work or looking for a change in career.

We are proud to offer unique work experience placements that give you the chance to work alongside highly qualified and experienced professionals. Gaining an in-depth understanding of both the technical elements and business skills that are required to succeed within construction and showing you a variety of teams that come together to complete a project, whether that be on site or in the office.

Interested? Get in contact: WDIworkexperience@willmottdixon.co.uk

Loyalty Rewards

After five years with us, you’ll join our 5-9 Year Club and celebrate annually with the other members. After reaching 10 years, you will join the prestigious Willmott Dixon 10 Year Club and celebrate along with Rick Willmott.

Private Health Care

We value your health care and wellbeing and that is why we offer free or discounted private health care that will avoid you NHS long waiting lists.

Salary and Profit Share

At Willmott Dixon Interiors we are proud of our people and sincerely believe that our success depends on them and their skills. We reflect our gratitude in the highly competitive salary we offer and review every year. In addition, we will thank you for your hard work with the percentage of our annual profit (subject to certain criteria) to the scope of reflecting our ‘one team’ nature.

Flexible Working & More

The best is yet to come! We give you a day off for your birthday (without using your holiday entitlement), early leave every Friday, dress down Friday once a month, Summer and Christmas events, and more. We have ambitions to be an employer of choice for those who either want to or need to work in a flexible and agile way. Experience it all when joining our team, we are looking forward to getting to know you.

Pension and Life Assurance

We strongly value your future and want to help you save for it, that is why we will contribute by 6% of your pension and you will be protected by Willmott Dixon Interiors Life Assurance Scheme (more details to come when joining).

Holidays

We commit everyday to promoting a healthy work/life balance that matches a competitive holiday allowance, the longer you stay the more you get. 

If the holidays allowance isn’t enough, you can take advantage of buying extra holiday entitlement each year.