GHG Scope 3 Property Categories: 5 Real Estate Emissions Buckets Under CSRD (2026)

The GHG Protocol Corporate Value Chain (Scope 3) Standard defines 15 categories of indirect emissions across the value chain. For property-owning companies under CSRD/ESRS E1, five categories capture the embodied and operational carbon of buildings owned, developed, leased, or held in funds: Category 1 (purchased goods and services), Category 2 (capital goods), Category 11 (use of sold products), Category 13 (downstream leased assets), and Category 15 (investments). Materiality screening allows exclusion of categories below 5% of total Scope 3, on disclosure of the rationale.

Which 5 Scope 3 categories apply to property firms?

The five Scope 3 categories that apply to real estate are the GHG Protocol Corporate Value Chain Standard subsets that map to building emissions across acquisition, development, sale, lease, and investment.

DataDrivenAEC’s analysis of the five categories shows the operational reality: a property fund holding a development pipeline + leased portfolio + closed-end investments triggers four of the five categories simultaneously, with Category 15 absorbing the same data inputs already produced for Categories 1, 2, and 13.

What does Category 1 cover for real estate?

Category 1 (purchased goods and services) is the embodied carbon of newly acquired buildings plus the materials consumed in renovation projects during the reporting year. The boundary is reporting-year acquisitions only, not the full existing portfolio.

The calculation uses per-asset whole-building LCA covering modules A1-A3 (product stage) at minimum, with A1-A5 (cradle-to-handover) preferred. The data source is environmental product declarations (EPDs) per material multiplied by volumes from the BIM model. EPDs are the verifiable inputs auditors accept under ISAE 3000; generic factors are rejected.

The category captures structure, envelope, partitions, finishes, and embedded MEP. Site preparation, tenant fit-out, and FF&E sit outside Category 1 in most accounting boundaries. Architecture firms supplying acquisition due diligence reports increasingly produce LCA outputs alongside the building survey, because client property funds need the verifiable Category 1 figure for their ESRS E1-6 disclosure within 90 days of acquisition close.

What does Category 2 cover for new construction?

Category 2 (capital goods) is the embodied carbon of new construction projects where the reporting entity is the developer, plus major refurbishments capitalized as fixed assets. Capital goods are durable assets the entity uses to provide services; Category 1 covers consumed goods and services.

The calculation is whole-building LCA per EN 15978 for assets completed in the reporting year. The standard covers modules A1-A5 (cradle-to-practical-completion) for embodied carbon, with B and C modules (use phase, end-of-life) typically reported separately or aggregated into Category 11 or Category 13 depending on the disposition route.

The distinction from Category 1 matters for double-counting. A building under development for the firm’s own portfolio enters Category 2 in the year of completion, then transitions to Category 13 (leased) or Category 11 (sold) for operational emissions in subsequent years. The same asset rarely belongs in both Category 1 and Category 2 in the same reporting year. Materiality screening allows exclusion of categories below 5% of total Scope 3, with disclosure of the rationale.

What separates Category 11, 13, and 15?

Category 11, 13, and 15 are three downstream categories that look similar but apply to three distinct business models. The category split prevents double-counting across the value chain.

Category 11 (use of sold products) applies to housebuilders and developers who sell completed buildings to end users. The buyer becomes responsible for use-phase emissions on transfer. The seller calculates expected lifetime energy consumption (kWh/m²/year) × emission factor × estimated lifetime, and discloses assumptions on building life (typically 50-60 years) and grid decarbonization trajectory.

Category 13 (downstream leased assets) applies to landlords and REITs leasing buildings to tenants. The lessor retains the asset and tracks operational carbon footprint of tenant-occupied facilities. Calculation uses actual energy bills where the landlord has access, or EPC ratings × floor area where access is restricted.

Category 15 (investments) applies to property funds, pension funds, and REITs holding underlying property assets. The fund reports aggregate carbon weighted by ownership stake or AUM. Category 15 is the most comprehensive category because it combines Categories 1, 2, 11, and 13 across all owned assets at fund level.

What are the most common Scope 3 categorization mistakes?

Common Scope 3 categorization mistakes are five misallocations that surface during ISAE 3000 limited-assurance procedures and force restatement of prior reports.

1. Counting a developed-and-held asset in both Category 2 and Category 1. When the same asset appears in multiple categories, the standard requires the most representative single category. Document the consolidation choice.

2. Reporting Category 13 without distinguishing landlord-controlled vs tenant-controlled energy. Operational control vs equity-share consolidation produces different boundaries. ESRS allows either approach but requires explicit disclosure of which is used.

3. Excluding Category 15 in fund structures with separate-account reporting. A fund with Category 1 data on each asset still owes Category 15 at fund level, weighted by stake. Single-asset reporting at the fund parent fails ISAE 3000 procedures.

4. Treating renovation materials as Category 2. Renovation materials sit in Category 1 (purchased goods consumed in operations), not Category 2 (capital goods, durable assets). Misallocation distorts year-on-year embodied-carbon trend reporting.

5. Estimating Category 11 without disclosing lifetime and grid-decarbonization assumptions. ESRS requires methodology disclosure. Estimates without traceable assumptions fail audit.

How DataDrivenAEC automates code compliance checking

Mapping building-level data to the correct Scope 3 category takes 2–3 hours per asset manually, and most errors surface only at audit. DataDrivenAEC builds custom agents that run this check on your drawing set and deliver the findings as a structured report. See all agents →

Frequently asked questions

Can a property fund exclude Category 15 if individual assets are reported under Category 1?

No. Category 15 is the aggregate portfolio disclosure required at fund level, and it combines Categories 1, 2, 11, and 13 across all owned assets weighted by ownership stake or AUM. Reporting at the individual-asset level under other categories does not satisfy Category 15. The fund must report aggregate weighted Category 15 figures alongside per-asset disclosures.

Are EPDs required for every material in Category 1 calculations?

EPDs are required where they exist for the material. Auditors apply ISAE 3000 (Revised) procedures and reject material inventories without EPD references where EPDs are commercially available. Where no EPD exists, the calculation may use industry datasets with disclosed methodology. The default position favors EPD-backed data; generic factors require justification.

How is the Category 11 building lifetime assumption disclosed?

ESRS requires explicit disclosure of the building lifetime used in Category 11 calculations, typically 50-60 years for residential and commercial assets. The disclosure must also cover the grid decarbonization trajectory assumed, since the use-phase emission factor changes year-on-year. Auditors review the lifetime + grid assumptions for consistency with the firm’s transition plan under E1-1.

What is the materiality threshold for excluding a Scope 3 category?

Categories below 5% of total Scope 3 emissions may be excluded under the GHG Protocol materiality screen, with disclosure of the exclusion rationale. ESRS layers the double-materiality test on top: financial materiality + impact materiality. For property firms, Categories 1, 2, and 13 are typically material under both screens and rarely qualify for exclusion. The exclusion rationale must be documented in the materiality assessment within the ESRS report.