business resources
Why Sustainability Is Now Central to Construction Planning
23 Jun 2026
Sustainability has moved from a desirable extra to a core requirement in construction, driven by regulation, investor expectations, and a growing body of evidence about the contribution of the built environment to global carbon emissions. Consultancies such as Mitchell McDermott work with developers to embed sustainability targets into projects from the earliest planning stages, ensuring that environmental commitments are reflected in design decisions, procurement strategies, and construction methods rather than being added as a superficial layer at the end of the process.
The Scale of the Built Environment Challenge
Buildings are responsible for approximately forty percent of global energy consumption and around a third of all carbon dioxide emissions, making the construction and property sector one of the most significant contributors to climate change. This scale of impact has placed construction firmly in the crosshairs of policymakers at national and international levels, with increasingly demanding standards being introduced for both new builds and the retrofit of existing stock. Developers who do not engage seriously with sustainability requirements face a growing risk of regulatory non-compliance, difficulty securing finance from institutions with environmental lending criteria, and reduced asset values as energy performance becomes a more prominent factor in valuation and investor assessment.
How Carbon Targets Are Shaping New Builds
The drive to reduce carbon emissions from new construction is being felt across every stage of the development process. Building regulations in the UK now include requirements for fabric performance, airtightness, and low-carbon heating systems that were not present a decade ago, and further tightening is expected as net zero targets approach. Beyond operational carbon, there is growing attention on embodied carbon, which is the greenhouse gas emitted during the production and installation of building materials. Developers are increasingly required to calculate, report, and set targets for embodied carbon as part of the planning and delivery process, making material selection and construction methodology as important as energy systems in determining overall carbon performance.
The Role of Consultants in Sustainable Development
Delivering a genuinely sustainable building requires coordinated expertise across architecture, engineering, cost management, and environmental assessment. Sustainability consultants bring a specialist layer of knowledge that supports the wider design team in meeting specific environmental targets and navigating the complexity of accreditation frameworks such as BREEAM, WELL, and the NABERS energy rating system. They advise on the selection of a certification route, the measures needed to achieve target ratings, and the process of evidencing compliance during construction and at completion. For developers less experienced in sustainability requirements, the consultant also plays an important role in translating environmental commitments made in planning applications into actionable requirements for the design and construction team.
What Certifications Developers Should Know About
BREEAM is the most widely used environmental assessment method for buildings in the UK and Europe, covering categories including energy, water, materials, transport, and ecology. Achieving a BREEAM rating provides third-party verification of environmental performance that is recognised by funders, occupiers, and planning authorities. LEED is the principal certification used in the United States and on internationally funded projects. The WELL Building Standard focuses on the health and wellbeing of building occupants rather than purely environmental performance and is increasingly specified alongside BREEAM on commercial developments. Developers should seek guidance on which certification route is most appropriate for their project type and intended occupier market before committing to a target at the planning stage.
How Sustainability Planning Affects Project Costs
A common concern about sustainable construction is that it costs more than a conventional approach, and to some degree this is true for the upfront capital cost of construction. However, the picture across the full lifecycle of a building is more nuanced. Lower energy bills, higher asset values, preferential financing terms, and reduced maintenance costs all contribute to a financial case for sustainability that extends well beyond the initial build cost. The key to managing upfront cost uplift is to integrate sustainability requirements into the design process from the start rather than specifying them retrospectively, as early integration allows the design team to identify low-cost solutions that achieve the required outcomes without relying on expensive add-on technologies.
