Scope 3 Is Changing: What Real Asset Managers Cannot Afford to Miss

Scope 3 reporting has always been one of the most complex areas of carbon accounting. For real asset managers, it also represents the largest area of carbon emissions.

Tenant emissions, embodied carbon, supply chain impacts, joint venture structures and financed emissions all sit within a value chain that is difficult to measure, influence and evidence. For years, this complexity has left room for inconsistent approaches, broad estimates and varying interpretations of what should, and should not, be included.

The GHG Protocol’s proposed Scope 3 revisions signal a clear shift in direction. While the revised standard is still in development, the message to the market is already visible: Scope 3 reporting is moving towards greater transparency, stronger data quality and more evidence-based accountability.

For real estate investors, this is not simply a technical reporting update. It has the potential to reshape how emissions data is collected, assured, and used in investment decision-making.

Scope 3 matters … a lot

In real estate, Scope 3 emissions are often the largest and most challenging part of an emissions footprint.

Unlike Scope 1 and 2, which generally relate to direct operations and purchased energy, Scope 3 reaches across the wider value chain. This can include emissions from tenants, upfront embodied carbon, purchased goods and services, investments, debt structures and assets held through more complex ownership arrangements.

That makes Scope 3 particularly difficult to manage.

A landlord may not directly control tenant energy use. A fund manager may have limited visibility over supply chain carbon. A joint venture may create questions around boundaries and allocation. A development project may rely on embodied carbon assumptions rather than product-level data.

These are not minor details. They shape the credibility of emissions reporting and, increasingly, the confidence of investors, lenders and regulators.

The direction of travel is clear

The proposed revisions to the GHG Protocol for the next phase of Scope 3 reporting will be more demanding.

One of the most important themes is data quality. Real asset managers need to provide greater transparency on the type of data used across their Scope 3 inventory. In practice, this means showing how much of an emissions footprint is based on primary data, and how much relies on benchmarks, proxies or spend-based estimates.

Primary data from tenants, suppliers, meters, invoices or Environmental Product Declarations can tell a much stronger story than generic assumptions. As disclosure expectations rise, the difference between “estimated” and “evidenced” is required to become much more visible.

Assurance is another key theme. As Scope 3 data becomes more important to investors and lenders, organisations may need to explain not only what they are reporting, but how the data has been checked, verified and governed.

The question is no longer just: “What are your emissions?”

It is becoming: “Can you prove where the data came from?”

The materiality question is getting harder to avoid

Historically, many Scope 3 inventories have included exclusions where data was difficult to collect, influence was limited or categories were considered immaterial. The proposed direction of the revised standard points towards tighter expectations and less flexibility around what can be left out.

For real estate, this could bring greater attention to areas that have often been difficult to evidence, including tenant operational emissions, upfront embodied carbon in development and refurbishment, and emissions linked to joint ventures or investment structures.

This is where the commercial implications become more obvious.

If lenders, investors and regulators are asking for more complete and credible emissions data, weak Scope 3 reporting could become more than a sustainability issue. It could affect due diligence, investor confidence, access to capital and the perceived maturity of an organisation’s wider governance.

Early action could create an advantage

The revised Scope 3 Standard is not yet final. However, waiting for the final version is not be the best strategy.

Real asset managers that begin preparing now can identify where their current approach is most exposed. They can assess which categories rely heavily on estimates, where tenant data gaps remain, how embodied carbon is being captured, and whether current reporting boundaries would stand up to greater scrutiny.

This preparation can also create strategic value.

Better Scope 3 data can support stronger investor conversations, more credible reporting, improved due diligence responses and clearer decarbonisation planning. It can also help organisations move from reactive compliance to proactive market positioning.

As sustainability reporting becomes more closely linked with capital markets, data quality becomes a signal. It tells investors something about governance, risk management and operational control.

The question real asset managers should be asking now

The key question is not whether Scope 3 reporting will become more rigorous – it will

The more important question is whether real asset managers are ready to evidence their numbers when scrutiny increases.  Below, we set out some key questions to consider:

• Do you know where your Scope 3 data comes from?
• Can you distinguish between primary data and estimates?
• Do you have a plan for tenant emissions?
• Can you evidence embodied carbon?
• Are your investment-related emissions boundaries clear?
• And, perhaps most importantly, would your current Scope 3 inventory still look credible under a more demanding framework?

These are the questions explored in EVORA’s latest whitepaper, GHG Protocol Scope 3 Revisions: What Real Asset Managers Cannot Afford to Miss.

The paper unpacks the proposed changes, what they could mean for real estate and infrastructure investors, and the practical steps organisations should be considering now.

Scope 3 reporting is entering a new phase. For real asset managers, the time to prepare is before the standard is finalised, not after.

Download the whitepaper to understand what is changing, where the risks may sit, and how your organisation can get ahead.