The Corporate Sustainability Reporting Directive is changing how companies report on their real estate footprint. Here’s what RE teams need to know — and what to prepare now before the first reporting deadline hits.

The Corporate Sustainability Reporting Directive entered force in stages starting January 2024, and by now the implications for corporate real estate teams are becoming tangible. If your company falls within scope — and most large or listed European companies do — your RE portfolio is a significant part of the sustainability story you are required to tell. The data burden is real, and it falls squarely on the teams that manage the physical estate.

What CSRD actually requires

CSRD mandates sustainability reporting under the European Sustainability Reporting Standards, known as ESRS. These standards are detailed, auditable, and far more prescriptive than the voluntary frameworks (GRI, CDP, TCFD) that many companies have used until now. The key difference: CSRD reporting is subject to limited assurance from the outset, moving to reasonable assurance in future years. This means your data will be audited with a rigour comparable to financial reporting.

For real estate, the relevant standards span multiple ESRS topics, but the heaviest requirements fall under:

ESRS E1 — Climate change: Scope 1 and 2 emissions from your buildings, energy consumption by source, carbon intensity per square metre, transition plans
ESRS E2 — Pollution: relevant if your portfolio includes industrial or manufacturing sites
ESRS E5 — Resource use and circular economy: waste management, material use in fit-outs, circular economy practices in portfolio management
ESRS S1 — Own workforce: workplace conditions, health and safety metrics, which connect to your space and occupancy data

The data challenge for RE teams

The core problem is that CSRD requires granular, site-level data that most RE teams do not currently collect in a structured way. Consider what is needed for ESRS E1 alone:

Total energy consumption per site, split by source (grid electricity, gas, district heating, on-site renewables)
Scope 1 emissions (direct, from on-site combustion) and Scope 2 emissions (indirect, from purchased energy), calculated per site
Carbon intensity metrics: kgCO2e per square metre, per employee, and per unit of revenue attributable to each site
Energy Performance Certificate ratings and their trajectory
Progress against any net-zero or carbon reduction targets

For a portfolio of 50 locations across 15 countries, assembling this data is a substantial undertaking. Energy data may come from utility bills, building management systems, landlord reports, or all three. The format, granularity, and reliability vary enormously. Some landlords provide detailed sub-metered data; others provide an annual service charge reconciliation with a single energy line item.

Carbon intensity: the metric that matters

Of all the metrics CSRD requires, carbon intensity per square metre is emerging as the most consequential for portfolio strategy. It connects energy performance directly to space efficiency, which is already a core concern for RE teams. A building with high carbon intensity is not just an environmental liability — it is likely an operational cost liability too, and it represents regulatory risk as national building efficiency standards tighten.

Calculating carbon intensity properly requires two things that are often harder than they sound:

Accurate floor area data, measured consistently (GIA vs NIA vs carpet area) across the portfolio
Reliable energy data, with appropriate emission factors applied per country and energy source

If your lease data and space data are in spreadsheets, and your energy data is in a separate system (or in no system at all), producing auditable carbon intensity figures is a manual, error-prone process. This is where structured portfolio data becomes a compliance requirement, not just an operational nice-to-have.

Space efficiency as a sustainability metric

CSRD brings an underappreciated benefit for RE teams: it elevates space efficiency from an internal operational metric to a board-level sustainability metric. Underutilised space is not just a cost issue — it is a carbon issue. Heating, cooling, and lighting space that nobody uses is a direct contributor to your reported emissions.

This creates a powerful alignment between financial and sustainability objectives. Reducing your footprint by consolidating underutilised sites simultaneously reduces cost, reduces emissions, and improves your CSRD metrics. RE teams that can demonstrate this alignment will find it significantly easier to secure budget and executive support for portfolio optimisation.

CSRD does not create new work for RE teams so much as it makes existing work visible and auditable. The data you should have been collecting all along is now required by law.

EU Taxonomy alignment

Beyond CSRD itself, the EU Taxonomy Regulation requires companies to disclose the proportion of their activities that are environmentally sustainable according to defined technical criteria. For real estate, the relevant criteria relate primarily to energy performance. A building qualifies as taxonomy-aligned for climate change mitigation if it meets one of several conditions:

It has an EPC rating of A (or within the top 15% of national building stock by energy performance)
It was built after 2020 and meets near-zero energy building requirements
It has undergone a major renovation that achieved at least a 30% reduction in primary energy demand

For portfolio reporting, this means knowing the EPC rating, construction year, and renovation history of every asset. If this data is not already in your portfolio system, it needs to be — and it needs to be kept current as EPCs are renewed and renovations completed.

What to prepare now

If you have not yet started preparing your RE data for CSRD reporting, here is a practical prioritisation:

1. Establish a single source of truth for lease and space data

Every site needs accurate floor area (measured consistently), lease terms, and current occupancy. This is the foundation. Without it, you cannot calculate any of the intensity metrics CSRD requires.

2. Collect energy data systematically

Establish a process for collecting energy consumption data from every site, ideally monthly. Where landlords provide this data, formalise the reporting requirement in your lease or side letter. Where you control the meters, automate the collection.

3. Map your EPC landscape

Know the current EPC rating of every asset, when it expires, and what the trajectory looks like. Identify buildings that are at risk of falling below minimum energy efficiency standards in their jurisdiction.

4. Connect to IFRS 16 data

Your IFRS 16 lease liability calculations already require much of the same base data — lease terms, rent amounts, discount rates. If your IFRS 16 and CSRD processes are drawing from different data sources, you are creating unnecessary reconciliation work and audit risk.

5. Automate where possible

The volume of data and the reporting frequency mean that manual quarterly assembly is not sustainable. Portfolio platforms that structure your lease, space, and energy data and generate the required metrics automatically are no longer a luxury — they are a compliance tool.

CSRD is not going away, and the reporting requirements will only tighten. RE teams that treat it as a data infrastructure problem — rather than a reporting problem — will find that the same infrastructure serves their operational and strategic needs, not just their compliance obligations.

What CSRD means for your real estate portfolio