How long does a GHG verification take for a small company?
For a single-site MSME with organised records, often a few weeks from contract to statement: planning, document review, a site visit of a day or two, then questions and the report. Most delay comes from slow answers to the verifier's queries, not the verifier's own work.
The stages
- Agreement on scope, criteria and level of assurance.
- Document review and a sampling plan.
- Site visit.
- Findings and your responses.
- Verification statement.
What speeds it up
- A complete inventory with methods written down.
- Invoices and logbooks filed by month.
- One person who can answer queries quickly.
Plan backwards
If a buyer needs the statement by a date, start at least two months earlier so a round of corrections does not miss it.
What Senseible does here
Senseible keeps every figure linked to its source invoice or bill with a fingerprint, so a verifier can trace a total back to the documents it came from.
Sources: ISO 14064-1, 14064-3 and 14067 (iso.org), GHG Protocol Corporate Standard, GHG Protocol standards
Last reviewed 2026-10-22.