Period-specific sustainability evidence for hotels and venues, reviewed by HLB and registered on Blockmark.
Every verified property receives an Evidence Pack — seven sections, independently reviewed, tied to a Record ID on the Blockmark Registry.
Sample below illustrates format. Verified property data remains confidential.
METHODOLOGY GROUNDED IN ESTABLISHED STANDARDS
Same eight KPIs, same HLB review, same Blockmark registration. Different cadence by sector.
Tuu Verified
Biannual · 6-month cycle
Turn hotel operations into benchmarked performance evidence owners, lenders, platforms and compliance teams can trust, compare and use with confidence.
USD 6,500 per year
Learn more →Tuu Verified
Quarterly · 3-month cycle
Tuu transforms venue operations into independently verified, reusable records for tenders and buyer questionnaires.
USD 7,500 per year
Learn more →Tuu Verified
Staged · audit-aligned
Turn venue operations into clause-mapped evidence that audit teams can follow and internal teams can reuse across ISO 20121 readiness work.
USD 17,000 per stage
Learn more →Tuu fits teams who already track operational sustainability data internally but need external stakeholders to trust, compare and use that evidence without repeated explanation.
Sustainability performance forms part of supplier evaluation, tender review and client onboarding.
A period-specific record of what was measured, what was reviewed and how performance compares.
Consistent verified data that platforms and partners can compare and reuse.
Approved language linked to verified evidence and fixed reporting periods.
Including ISO 20121-related readiness, with records that are easier to follow and defend.
Independent operational records, registered on Blockmark.
Hong Kong · Hotels
Chiang Mai, Thailand · Hotels
Phuket, Thailand · Hotels
Phuket, Thailand · Hotels
Cherngtalay, Phuket, Thailand · Hotels
Phuket Town, Thailand · Hotels
Phú Yên, Vietnam · Hotels
View all verified properties →“Reducing electricity use by 23% after our renovation was a major milestone, but the real value lies in independent verification. Platforms like Tuu help turn progress into proof.”
WHERE THE EVIDENCE COMES IN
Operators submit operational data through the Platform — utility bills, invoices, training logs, waste records — each entry traceable to a source document. The Pack is built from this data, independently reviewed by HLB.
30 MAR 2026
Recent research suggests hotel guests judge eco-friendliness less by sustainability performance than by the quality of the stay itself. Xavier Font on what that says about hospitality's communication problem.
2 OCT 2025
RFPs used to come down to price, location and service. Today, one factor increasingly decides who makes the shortlist: proof of sustainability.
26 JUN 2025
Brussels withdrew its support for the Green Claims Directive days before final talks. The withdrawal doesn't reset the rules — it defers the centralised enforcement layer.
Energy, water, waste, food, training — scored against benchmark corridors informed by CHSB, ASHRAE, CIBSE, WRAP, UNEP and ISO references.
Read the full methodology →Every Tuu Verified certificate is publicly recorded on the Blockmark registry. See the registry →
GET STARTED
Scope, timing and what a first verification cycle would produce.
hello@tuu.eco