Landlords & Investors
Net Zero Carbon Reports
Asset and portfolio-level NZC pathway reports aligned with the UK Net Zero Carbon Building Standard, CRREM benchmarks, and UKGBC guidance — giving landlords, funds, and investors a credible, costed route to net zero.
What it is
A Net Zero Carbon Report is the core deliverable for a commercial building or portfolio seeking to understand and close the gap to net zero carbon. It combines operational energy assessment, carbon benchmarking, CRREM pathway analysis, and a costed carbon reduction roadmap — producing a single, investor-grade document that evidences where a building is today and what is required to achieve NZC alignment.
We produce NZC Reports aligned to the UK Net Zero Carbon Building Standard v1 (March 2026) — the definitive UK framework for net zero buildings, co-developed by RICS, CIBSE, RIBA, UKGBC, LETI, BRE, BBP, and IStructE. Our reports are suitable for use by landlords, asset managers, property funds, REITs, and institutional investors as the technical foundation for NZC claims, ESG disclosures, and asset management decisions.
When you need it
- You own or manage a UK commercial building or portfolio and want to understand its position against NZCBS v1 operational energy and carbon limits.
- Your fund or investment strategy requires NZC-aligned assets and you need a credible technical assessment to underpin that commitment.
- A lender, investor, or Green Loan framework is asking for evidence that your assets are on a credible net zero pathway.
- You are preparing a GRESB submission and need asset-level NZC pathway evidence for the performance component.
- You are acquiring an asset and want an NZC due diligence report to understand stranding risk, capex requirements, and alignment timeline.
- You want to make a formal NZCBS claim — "Net Zero Carbon Aligned Building" or "NZC Aligned Building (plus offsets)" — and need the technical assessment to support it.
Our approach
- 1
Data collection and baseline
We collect twelve months of energy consumption data (electricity, gas, district heat, on-site renewables) and verify metered data against available EPCs, DECs, and half-hourly data where accessible. We establish the operational energy intensity baseline in kWh/m²/yr and the associated carbon intensity in kgCO₂e/m²/yr.
- 2
NZCBS gap analysis
We assess the building's operational energy intensity against the applicable NZCBS v1 limit for its building type and use (from NZCBS Annex A tables). We identify whether the building is currently within the limit, the magnitude of any gap, and which energy end-uses are driving excess consumption.
- 3
CRREM pathway modelling
We run the building through the CRREM V2 pathway tool to establish its current carbon intensity position against the 1.5°C and 2°C decarbonisation pathways, and identify the Misalignment Year — the point at which the building's carbon intensity exceeds the CRREM pathway if no action is taken.
- 4
Carbon reduction measures
We identify the technically feasible carbon reduction measures available to the building — building fabric improvements, heating system decarbonisation, renewable energy installation, smart controls — and model the carbon and energy impact of each.
- 5
Financial appraisal
We apply a 15-year NPV appraisal to each measure using HMT Green Book methodology: 3.5% discount rate, BEIS/DESNZ central energy price escalation, and UK ETS carbon price. This gives the landlord a clear investment case for each measure, not just a list of recommendations.
- 6
NZC pathway report
We produce the full report: baseline, gap analysis, CRREM outputs, prioritised measures, financial appraisal, and a recommended pathway to NZCBS alignment — with a clear statement of whether the building can make the "targeting alignment" claim under NZCBS §7.5.
What you receive
NZC pathway report
A complete asset-level report covering operational energy baseline, NZCBS gap analysis, CRREM pathway, carbon reduction measures, and recommended NZC alignment pathway — suitable for board, investor, and lender audiences.
CRREM outputs
Pathway charts showing current carbon intensity versus the 1.5°C pathway, the Misalignment Year, and the carbon intensity trajectory under the recommended measures.
Financial appraisal
A 15-year NPV table for each recommended measure — annual energy saving (kWh), annual cost saving (£), carbon saving (tCO₂e), simple payback, and discounted NPV.
NZCBS proforma data
Completion of the relevant sections of the NZCBS v1 submission proforma (rev01 April 2026) for the building, ready for verification submission.
Executive summary
A two-page investor-facing summary of the building's NZC position, recommended pathway, and key metrics — formatted for inclusion in ESG reports and investor disclosures.
Why NZC Consultants
- Accredited ESOS Lead Assessor and NZCBS advisory specialists
- CRREM V2 pathway analysis included as standard
- HMT Green Book financial methodology — 15-year NPV on all measures
- Independent — no equipment sales, no contractor relationships, no bias in recommendations
- NZC Portal platform — client compliance data managed through our specialist SaaS, providing a live dashboard and audit-ready evidence pack
Frequently asked questions
Reference library
Related official guidance
Reference links to the standards, regulations and governing bodies that underpin this service.
Net Zero Buildings
UK Net Zero Carbon Buildings Standard
UK NZCBS Consortium (UKGBC, BBP, BRE, CIBSE, IStructE, LETI, RIBA, RICS)
Technical framework for defining and verifying net zero carbon buildings in the UK, covering operational energy, embodied carbon and renewable energy considerations.
View official guidanceBuilding Performance
CIBSE — technical knowledge portal
Chartered Institution of Building Services Engineers
Technical guides, TMs and application manuals covering building services design, energy and HVAC performance.
View official guidanceBuilding Performance
NABERS UK
BRE / NABERS UK
Operational energy rating scheme for UK offices, providing a measured performance benchmark complementary to EPCs.
View official guidanceBuilding Performance
CIBSE TM54 — evaluating operational energy use at design stage
CIBSE
Methodology for predicting in-use energy performance of new and refurbished buildings beyond Part L compliance modelling.
View official guidanceBuilding Performance
TM44 Air Conditioning Inspections
CIBSE / GOV.UK
Statutory inspection regime for air conditioning systems above 12 kW in England, Wales and Northern Ireland.
View official guidanceBuilding Performance
Building Regulations — Approved Document Part L
MHCLG
Conservation of fuel and power requirements applied to new build, refurbishment and material changes of use.
View official guidanceBuilding Performance
BSI — relevant British Standards
British Standards Institution
BS EN 16247 (energy audits), BS EN ISO 50001 (energy management) and related standards underpinning UK compliance regimes.
View official guidance
Commission your NZC Report
Tell us about your building or portfolio — location, size, building type, and any existing energy data — and we will confirm scope and turnaround within one working day.