BREEAM Assessment Explained: What It Measures, How Certification Works, and Common Challenges

Getting a BREEAM assessment is not just about ticking a sustainability box. It is a structured way to produce credible, third-party sustainability evidence that holds up under scrutiny from stakeholders, and can be easily compared across different physical assets.

Because BREEAM requirements vary by scheme, asset type, and local framework, this article is intended as a high-level overview. For project-specific requirements, teams should always follow the relevant BREEAM technical manual and licensed assessor guidance.

BREEAM, or the Building Research Establishment Environmental Assessment Method, evaluates much more than energy efficiency. It assesses a range of criteria, providing a comprehensive view of a building or building project's sustainability. Most BREEAM assessments typically assess performance in a number of categories, including management, health and well-being, energy, transport, water use, materials, waste, land use and ecology, pollution and innovation.

The exact criteria assessed, however, varies from scheme to scheme, with specific BREEAM standards in place to evaluate new construction projects, refurbishments, assets that are currently in-use, infrastructure and larger community-scale projects. Several European countries, including Austria, Germany and the Netherlands, also have tailor-made, national BREEAM frameworks, with their own standards for different asset or project types.

Despite these regional differences, BREEAM is widely used in European real estate. Recognised internationally as a leading sustainability assessment framework and certification system, a BREEAM assessment is often expected by investors, lenders, and other stakeholders as an independent, evidence-backed and standardised assurance of an asset’s quality and sustainability.

Although BREEAM is widely used, many organisations report struggling with the certification process, particularly when they are running multiple projects or assets in parallel. Often, the challenge is not the intent of the sustainability work itself, but the practical effort involved in assembling consistent, decision-ready evidence across teams, contractors, and documentation formats.

BREEAM is designed to be evidence-based. In practice, "evidence quality" usually comes down to whether the submission is:

1. 01
   Consistent — standard terminology and repeatable documentation.
2. 02
   Defensible — clear sources, assumptions, and an audit trail.
3. 03
   Comparable — outputs that can be benchmarked across assets and projects.
4. 04
   Decision-relevant — information that supports design, procurement, and operational choices, not just box-ticking.

This is one reason teams increasingly focus on standardising data inputs and documentation, particularly when they need to certify multiple assets over time.

Although the exact criteria depend on the exact scheme or local framework involved, most BREEAM assessments measure performance across ten different categories.

Within these categories, there are usually direct and indirect criteria that focus on mitigation, resilience and adaptation against physical climate risk. These criteria require project teams to assess site-specific hazards (often with a strong emphasis on flooding) and to consider how those hazards may change under future climate scenarios over the asset’s lifetime. This typically means demonstrating:

• A documented climate risk assessment for current and future scenarios.

• Evidence the assessment is location-specific and decision-relevant.

• Identification of material hazards and key vulnerabilities.

Where risks are material, BREEAM also rewards:

• A clear adaptation plan, or measures that reduce vulnerability and disruption.

• Integration of resilience into design, operations, and continuity planning.

The specific criteria assessed by BREEAM, however, depend on the type of building project being assessed, with five different BREEAM standards in place for different development types.

1. 01
   BREEAM New Construction: This assesses the sustainability of new building projects and developments.
2. 02
   BREEAM Refurbishment and Fit-Out: This rates the sustainability of building remodels and refurbishments.
3. 03
   BREEAM In-Use: This evaluates sustainability in buildings that are in-operation.
4. 04
   BREEAM Communities: This scores sustainability in large, community-scale developments or regeneration projects.
5. 05
   BREEAM Infrastructure: This assesses sustainability for public infrastructure, civil engineering and landscaping projects and contracts.

BREEAM ratings are not window-dressing. They are evidence-backed, standardised indicators of asset quality and governance, which investors, lenders and auditors rely on to quickly evaluate sustainability performance.

A number of organisations, for instance, have reported that using low-resolution and inconsistent physical climate risk data had a significant impact on their overall BREEAM score, which, in some cases, could have led to drop in rating. Given the importance of BREEAM rating as an indicator to stakeholders, it is essential for organisations to use consistent, defensible evidence to ensure that their assets are evaluated properly.

The BREEAM assessment then is an important tool to demonstrate the sustainability of assets, informing stakeholder perceptions of their value and their risks. As such, it can play an important role in valuation and financing discussions, while also supporting performance at the operational level.

Buildings with BREEAM certification are widely seen as more valuable assets, offering important advantages to owners, developers and investors.

Although BREEAM can be an important driver of asset value, many organisations report running into problems when attempting to implement BREEAM at scale. It is not too difficult to do a BREEAM assessment for one building project. What is difficult is certifying assets at volume (say, 50 or more per year), with multiple assets processed each month.

Many organisations run BREEAM-related work on an asset-by-asset basis, hiring different contractors for each project, often without a consistent methodology, consistent data inputs, or regular output formats. This inevitably leads to:

• Conflicting outcomes for the same asset from different contractors.
• A weak audit trail that fails to satisfy third-party reviewers.
• Slow turnaround for BREEAM assessments when certification is required at scale.

The keys to running BREEAM assessments at scale are repeatable and consistent workflows that can be run across many different assets. Good BREEAM practice at scale instead turns on ensuring:

• ✓ Standard inputs
• ✓ Standard language
• ✓ A clear audit trail
• ✓ Repeatable outputs across workflows

This allows organisations to keep BREEAM assessments consistent, repeatable and on-time when processing a high volume of assets.

Getting this right, however, is not just about portfolio management and getting sustainability ticks. BREEAM can also play an important role in broader strategy around ESG and climate risk.

ESG: BREEAM assessment provides a framework to operationalise ESG goals at the building level, with metrics to track sustainability goals and adaptation measures to implement them on an asset-by-asset basis.

Climate Risk: With physical climate risk and adaptation measures incorporated into the BREEAM process, assessment means forward-looking, site-specific assessment and (where relevant) adaptation planning, providing the basis for broader risk strategy.

BREEAM outputs then can provide important data for broader ESG narratives and disclosures, and demonstrate risk management to insurers, lenders and other stakeholders. This data can also be implemented into portfolio scanning, and, at the wider regulatory level, these outputs can be used in GRESB reporting, EU Taxonomy alignment and SFDR disclosure.