Category 8/13 and the operational system to collect tenant/landlord data for real estate portfolios.
For most real estate organizations, Categories 8 (upstream leased assets - you as tenant) and 13 (downstream leased assets - you as landlord) represent the largest Scope 3 emission sources. This collection provides the decision frameworks, calculation methods, and data collection systems you need.
Emissions from buildings you lease from landlords.
Emissions from buildings you lease to tenants.
A scalable campaign motion to collect tenant utility data and unlock cooperation for upgrades.
A beginner-safe decision tree for real estate: are you the lessee or lessor, and where do emissions go?
If you are the tenant: build a leased-space roster, get utility data, and document assumptions.
If you are the landlord: get tenant utility data or allocations, document methods, and scale it portfolio-wide.
A practical clause menu to unlock data sharing, cooperation, and metering (not legal advice).
How to collect tenant-paid utility data consistently (without endless chasing).
A scalable operating system for tenant utility data: roster → request → intake → QA → escalate.
How to allocate emissions between landlords and tenants - methods, examples, and best practices.
How to allocate energy credibly when you don't have perfect meters.
Framework for achieving net zero at the building level - from baseline to certification.
Move from allocation to measurement: what to meter, where, and how to justify it.
v1.0 (2026-01): Latest release