Definition

In an APC context, the relationship between property and the environment runs in two directions: the built environment's impact on the natural world through energy consumption, carbon emissions, water use, waste and land take; and the natural environment's impact on property through climate-related physical risks (flooding, overheating, subsidence) and the regulatory responses they generate. The Climate Change Act 2008 (as amended 2019) and the UK's net zero commitment drive both the regulatory framework and investor scrutiny of property portfolios.

Why this matters for Sustainability

  • Level 1 knowledge: you must be able to describe the ways in which property both affects and is affected by the natural environment.
  • Climate-related physical risks — flooding, overheating, drought-induced subsidence — are increasingly priced into property values and insurance premiums, creating due diligence obligations for surveyors.
  • Regulatory and market-driven transition risks (MEES tightening, carbon pricing, investor ESG requirements) create stranded asset risks that surveyors must identify and advise clients on.
  • The TCFD framework requires institutional property investors to report on both physical and transition climate risks across their portfolios, increasing demand for surveyors with climate literacy.

Key principles

Property's impact on the environment

The construction and operation of buildings accounts for a significant proportion of UK greenhouse gas emissions. Operational energy use is the largest component, but embodied carbon in construction materials is increasingly recognised as material, particularly for well-insulated new buildings. Beyond carbon, the built environment affects biodiversity through land take and habitat fragmentation, water through run-off, and air quality through combustion. The RICS whole life carbon assessment professional standard (2nd edition, 2023) provides the methodology for quantifying these impacts.

The environment's impact on property: physical risk

Climate change is altering the physical risks property faces. Flood risk is increasing; the Flood and Water Management Act 2010 and NPPF require flood risk assessments for developments in flood zones. Overheating risk — particularly for residential buildings under Part O of the Building Regulations — affects occupant health and insurability. Subsidence risk is growing in clay-soil areas as droughts intensify, with implications for insurance, mortgage availability and building condition surveys.

The environment's impact on property: transition risk

Transition risks arise from the regulatory and market changes required to achieve net zero. The principal regulatory risk is MEES tightening under the Energy Act 2011: commercial properties below EPC E cannot be legally let, and the proposed raise to EPC B by 2030 would render a large proportion of existing stock unlettable without improvement. Market transition risk arises from investor and occupier preferences shifting toward greener buildings, generating green premiums for certified assets and brown discounts for poorly rated ones.

Relevant RICS guidance and legislation

  • Climate Change Act 2008 (as amended 2019) — sets the UK net zero by 2050 target, driving both regulatory and market changes affecting property.
  • Energy Act 2011 / MEES — the legislative basis for Minimum Energy Efficiency Standards, creating transition risk for sub-standard commercial properties.
  • Environment Act 2021 — introduced mandatory Biodiversity Net Gain and strengthened environmental protection obligations relevant to development.
  • Flood and Water Management Act 2010 — governs flood risk assessment and sustainable drainage requirements for development.
  • RICS "Whole life carbon assessment for the built environment" 2nd edition (2023) — the professional standard for measuring and reporting environmental impact across the property lifecycle.

Ethics and Rules of Conduct angle

Rule 2 of the RICS Rules of Conduct (effective 2 February 2022) requires members to maintain professional competence. Climate-related risks are now material to property valuation, condition assessment and investment advice, and surveyors who fail to identify and communicate them risk providing negligent advice. Rule 3 (integrity) requires surveyors to disclose material risks — including flood risk, MEES non-compliance and physical climate risk — even where the client has not specifically asked, if the surveyor identifies them in the course of their work.

APC-style Q&As

Q (Level 1)Name two ways in which buildings affect the natural environment.

Buildings generate greenhouse gas emissions through energy used for heating, cooling and lighting (operational carbon) and through the materials used in their construction (embodied carbon). They also affect biodiversity through land take and habitat fragmentation, surface water run-off, and urban heat islands through heat rejection from cooling systems.

Q (Level 1)What is the difference between physical climate risk and transition risk in property?

Physical climate risk refers to direct threats to property from climate change — flooding, overheating, subsidence and coastal erosion — which affect condition, insurability and value. Transition risk refers to the financial and regulatory risks arising from the shift to a low-carbon economy — MEES tightening, carbon pricing, stranded asset risk and changing investor or occupier demand — which affect lettability and investment performance.

Q (Level 2)How does MEES create a transition risk for commercial property owners?

MEES, under the Energy Act 2011, currently prohibit the letting of commercial properties below EPC E in England and Wales. The government has consulted on raising the minimum to EPC B by 2030, which would render a large proportion of existing office and retail stock unlettable without significant capital investment. Properties that cannot be improved face stranded asset risk — losing value and lettability — creating a material advisory obligation for surveyors on acquisitions and portfolio management.

Q (Level 2)When is an Environmental Impact Assessment required, and what does it cover?

An EIA is required for development projects likely to have significant environmental effects, under the Town and Country Planning (Environmental Impact Assessment) Regulations 2017. It applies automatically to Schedule 1 projects (motorways, nuclear power stations, large industrial installations) and is screened for Schedule 2 projects where significant effects are likely. The Environmental Statement must address ecology, landscape, water quality, flood risk, noise, air quality and heritage. The process involves public consultation and informs the planning authority's decision.

Q (Level 3)A client is considering acquiring a large office building. How would you assess the environmental risks relevant to the acquisition?

(example) I would assess physical risks (flood zone, subsidence, overheating from glazing and orientation) and transition risks (EPC rating and improvement cost to current MEES E and proposed B by 2030, whole life carbon profile against the RICS standard, and capital expenditure to meet institutional ESG expectations). All material risks would be reported to the client and reflected in pricing and acquisition strategy, consistent with Rules 2 and 3 of the RICS Rules of Conduct.