Milestones will be defined in measurable terms (e.g. specific infrastructure segments completed, permits obtained, pre‑sales achieved). Their achievement will be certified by independent third parties where appropriate (for example, engineering / technical inspectors for construction milestones, notaries or lawyers for legal milestones, auditors for financial covenants). The names and appointment process for these independent certifiers will be set out in the documentation to ensure that neither the sponsor nor the developer can unilaterally validate their own performance.