Jurisdiction(s):
United Kingdom

Key definition

Completion definition

What does Completion mean? In legal practice, Completion is the point at which a transaction is finally effected, sometimes called 'closing' in cross‑border deals: consideration is paid and title, assets or rights are transferred after all conditions precedent are satisfied or waived and the required completion documents are delivered. Not generally defined by legislation, it is a contractual expression used across conveyancing, corporate/M&A and finance, informed by common law. Key features include a completion date/time; completion mechanics (agenda or checklist); execution and delivery of transfers and ancillary documents; release of funds (often against undertakings); and, where relevant, escrow or virtual completion. Completion usually fixes when...

Post-completion environmental checklist for commercial property transactions: remediation, permit transfers, insurance and report reliance (England and Wales)

Published by a LexisNexis Environment expert

Practice notes

Environmental Rectification work post Completion

Where an environmental report, an Asbestos survey, or the seller’s disclosures flag non-compliance or capital spending obligations, the sale agreement may contain provisions requiring the seller or the buyer to undertake further enquiries and remedial measures after completion.

After completion, actions may comprise:

commissioning a fresh asbestos survey to update the asbestos register or to evaluate the need for asbestos remediation
removal or encapsulation of asbestos-containing materials
upgrades to septic tanks or drainage infrastructure
decommissioning or extraction of underground storage tanks
fire safety upgrades, and
intrusive ground investigations, gas sampling, groundwater monitoring, or remediation activities

See Precedents: Asbestos indemnity and Environmental rectification work clause.

Transfer of environmental permits

Under the Environmental Permitting (England and Waste) Regulations 2016 (EPR 2016), SI 2016/1154, certain activities — including waste operations, manufacturing sites, mining waste, radioactive substances, and discharges to surface water or groundwater — may require an environmental permit. Transferring an environmental permit to the buyer requires a joint...

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Web page updated on 21/05/2026

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