Real estate carbon accounting software: leases, scopes and pathways

Software that builds a greenhouse gas inventory for a property portfolio: it holds the assets, the leases and the meters, applies emission factors to energy use, and places each building’s emissions in Scope 1, Scope 2 or Scope 3 categories 8 and 13 according to the lease type and the consolidation approach the company has chosen.

Most tools then add intensity metrics per square metre for CRREM and GRESB.

This site ranks no products and has tested none, so it names no best.

The useful test is whether a tool maps each lease to the right scope under your consolidation approach, keeps landlord and tenant areas apart without losing whole-building data, compares assets with the current CRREM pathway version, and exports every figure with its factor and source — shown on a few of your own buildings.

Often, but it depends.

Under the GHG Protocol Scope 3 Standard, a lessor reports its leased-out buildings in category 13 (downstream leased assets) when they are not already in its Scope 1 or 2, and a lessee reports leased-in space in category 8 when it is not in its own Scope 1 or 2.

Which side reports Scope 1 and 2 depends on the lease type and the consolidation approach, and the Standard’s Appendix A tabulates both perspectives.

Category 8, upstream leased assets, covers the operation of assets a company leases in, where they are not already in its Scope 1 or 2; it applies to lessees.

Category 13, downstream leased assets, covers assets a company owns and leases out, where they are not already in its Scope 1 or 2; it applies to lessors.

Both are counted for the part of the year the asset was leased.

Usually, software that compares each building’s carbon and energy intensity with its CRREM pathway and works out when it falls out of alignment.

CRREM itself says no software is required: its pathways and the guidance for the Misalignment Year are open access, and paid software that embeds CRREM data needs a licence partner agreement.

Ask a vendor which pathway version it uses; CRREM’s explorer shows Global Pathways V2.04 (August 2025).

Software that prepares a portfolio’s data for the GRESB Real Estate Assessment.

GRESB is a paid, self-selecting benchmark, not a regulation, and there is no such thing as GRESB certified: GRESB issues a score and a 1 to 5 Star rating, and the rating is a quintile, so each year 20% of entities receive 5 Stars.

No. The legal minimum for privately rented property in England and Wales under SI 2015/962 is band E. Band C by 2030 for privately rented homes is a policy aim still under design, and government expects to lay legislation in 2027; Scotland’s own regime was a draft as sourced.

A tool that flags assets against band C is applying a scenario, which is useful only if it says so.

Yes, in England and Wales.

Since 1 April 2023 a landlord may not continue to let a non-domestic private rented property below band E unless an exemption is registered, subject to carve-outs such as short lettings and leases of 99 years or more.

Non-domestic penalties can reach £50,000 or, for a breach of three months or more, £150,000.

Not at national level in England.

The Future Homes and Buildings Standards regulate operational carbon from 24 March 2027; Part Z, which would require whole-life carbon assessment, is a proposal and not law.

The RICS whole life carbon assessment standard, second edition, has been mandatory for RICS members since 1 July 2024 as a professional standard.

Through financed emissions, Scope 3 category 15, usually under PCAF Part A, now in its third edition (December 2025), whose commercial real estate and mortgages methods are among the six asset classes carrying the Built on GHG Protocol mark.

UK SRS S2 ¶29A lets an entity limit category 15 to its financed emissions.

Owning and operating buildings is a different inventory from lending against them.

It depends on the company.

SECR applies to quoted companies and to large unquoted companies and LLPs, and a company is large only when it exceeds two of £36m turnover, £18m balance sheet and 250 employees, judged over two consecutive years after the first.

Listed companies in five Listing Rules categories report against UK SRS on a comply-or-explain basis for periods beginning on or after 1 January 2027.

In this site’s registry, 1 of the 5 vendors filed for real estate publish a free option on their own pages (Measurabl), and 4 are recorded as Enterprise level · TBD.

CRREM’s pathway data is itself free for internal use with attribution.

Whatever the price, the tests on this page are the same.

No. This site has tested no products.

The page is built from the GHG Protocol, UK reporting rules, MEES and the standards and benchmarks that govern property emissions, each cited to its source, and the vendor directory quotes only what each vendor publishes about itself.