5-Step RIBA Stage 6 Checklist to Secure UK Completion Certificates

Navigate the complexities of RIBA Stage 6 handover with a practical checklist designed to secure completion certificates and manage the defects liability period effectively.

By James Shorter ·

5-Step RIBA Stage 6 Checklist to Secure UK Completion Certificates

Engineer checking completed building services

RIBA Stage 6 (handover) begins at practical completion and runs to the end of the defects liability period. Its job is to transfer usable as-built information, finish commissioning, and secure statutory completion. The three things you must get right are a complete handover pack the Responsible Person can actually use, a signed-off snagging and commissioning record, and written confirmation that everything has been received.

TL;DR:

  • Proper planning from Stage 1 ensures continuous evidence collection, reducing last-minute scramble and delays during handover.
  • The handover pack must include updated as-built drawings, fire safety files, warranties, compliance certificates, and a client confirmation statement.
  • The defects liability period typically lasts six to twelve months after practical completion, during which the contractor fixes identified defects.
  • Responsibilities are usually clear: the client signs off the handover, the contractor completes testing and logs, and the design team updates records and manuals.
  • Using automated record-keeping tools like BRCKS can streamline handover documentation, minimise missing records, and reduce delays for the completion certificate.
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Table of Contents

What Stage 6 covers in practice

Stage 6 sits between the end of construction and the start of proper occupation. RIBA’s Plan of Work places it immediately after practical completion, running until the defects liability period closes. It doesn’t sit in isolation. Handover tasks routinely start during Stage 5, as commissioning engineers finish testing and the design team pulls together as-built records, and Stage 7 (use) overlaps the tail end of Stage 6 as occupants move in while snags are still being closed out.

On site, this means three strands of work running in parallel. First, physical commissioning: getting mechanical and electrical systems tested, balanced, and signed off. Second, snagging: identifying defects, logging them with evidence, and tracking rectification. Third, paperwork: assembling the building manual, fire safety file, warranties, and compliance certificates into something a client or facilities manager can actually navigate.

Three parallel Stage 6 handover workstreams

None of this works as a last-minute scramble. Teams that treat Stage 6 as a discrete two-week task at the end of the job are the ones chasing subbies for missing test certificates three months after the keys have gone over.

Key handover deliverables and documents to prepare

A handover pack that gets rejected by building control, or ignored by the client, is usually missing one of a small set of core items. Get these right and the rest tends to follow:

  • As-built drawings and BIM extracts — updated to reflect what was actually built, not what was designed, with any agreed variations marked up.
  • Fire and emergency file — including the golden thread extracts required for higher-risk buildings, covering fire, ventilation, energy and overheating information.
  • Operations and maintenance manual — plus a plain-English Home User Guide for domestic clients who won’t read a technical O&M manual.
  • Warranties and commissioning certificates — covering plant, systems, and any specialist installations with manufacturer sign-off.
  • Compliance declarations — structural, electrical (EIC/EICR), gas safety, and any other statutory certification relevant to the build.
  • Change-control log and test records — a running record of variations, RFIs, and commissioning results, not reconstructed after the fact.
  • Client confirmation statement — the formal document confirming the client accepts handover and the information transferred.

For higher-risk buildings, the golden thread extracts aren’t optional extras. Building Safety Regulations require fire-safety information to be formally handed to the Responsible Person or accountable person within set timescales, with written receipt confirming it happened. Skipping that step can hold up occupation entirely.

Practical completion, defects liability and statutory timelines

Practical completion is the contractual trigger for Stage 6: the point where the works are complete enough for the client to take possession, even if minor items remain outstanding. It starts the defects liability period (DLP) clock and shifts insurance and maintenance responsibility toward the client, depending on the contract terms.

Most residential and small commercial contracts set the DLP for a typical period covering the initial months after practical completion. During that window, the contractor returns to fix defects identified after occupation, while the client and design team monitor how the building performs in real use.

Applying for a completion certificate in England has its own statutory rhythm. Gov requires up-to-date as-built plans, the change-control log, and a client confirmation statement to accompany the application. Local authorities then have defined periods, set out in the Building Regulations, to review submissions and inspect the works before issuing the certificate.

Practical completion, defects liability and statutory timelines — overview diagram

Who does what at handover — roles and responsibilities

Handover fails when everyone assumes someone else is holding the paperwork. The split of responsibility is usually clear, even if it rarely gets written down.

The client signs the confirmation statement, accepts insurance responsibility from practical completion onward, and must ensure the Responsible Person actually receives the fire-safety information, not just that it was sent.

The contractor completes commissioning, provides test certificates for every system installed, and runs the snag rectification programme through the DLP. That includes keeping evidence of what was fixed and when.

The design team (including the principal designer where applicable) delivers as-built records, updates specifications to match what was constructed, and produces user guidance that a non-technical occupant can follow. Where a principal contractor role exists under CDM, that responsibility for coordinating handover information sits with them.

A practical Stage 6 checklist: snagging, commissioning and sign-off

Run through these in order, not all at once in the final week:

  1. Pre-handover inspections — walk the site with a photo-led snag list before practical completion, not after.
  2. Complete commissioning sequences — capture test results and sign-off evidence for every mechanical and electrical system, including seasonal commissioning where relevant.
  3. Close the change-control log — every variation and RFI logged and resolved, so the completion certificate application isn’t held up by a missing record.
  4. Assemble the handover pack — drawings, manuals, warranties, and certificates checked against the RIBA Stage 6 checklist before submission.
  5. Confirm sign-off — client signs the confirmation statement, Responsible Person confirms receipt of fire-safety information, DLP dates are agreed and diarised.

Pro Tip: Photograph every snag as you log it, and photograph the fix. A written “resolved” note means nothing to building control or an unhappy client six months later; a dated photo pair settles the argument before it starts.

Preparing earlier stages so handover isn’t a scramble

Handover goes wrong when nobody planned for it until Stage 6 arrived. RIBA’s own guidance recommends defining a Plan for Use Strategy as early as Stage 1, setting out what information the client will need to run the building and who’s responsible for producing it.

The practical version of this is progressive assurance: collecting test records, commissioning evidence, and approval sign-offs as you go, rather than reconstructing a dossier in the final fortnight. Construction Leadership Council guidance is explicit that continuous evidence collation speeds up building control approval, because there’s nothing left to chase.

That means consistent, versioned file naming from day one, dated photo logs against each milestone, and commissioning records filed against the right system as soon as they’re signed, not weeks later.

Post-handover: aftercare, soft landings and post-occupancy evaluation

Handover doesn’t end when the keys change hands. Aftercare typically runs the first few weeks of occupation, with the design team on hand to answer operational questions. Soft landings extends that further, often through the first year, with light-touch post-occupancy evaluation checking how systems actually perform against design intent. Recording any extended commissioning work or POE costs against the original brief keeps expectations honest for the next project.

Handover is a delivery discipline, not a paperwork event

Handover succeeds when records are treated as live deliverables throughout the build, not assembled retrospectively. Teams that log decisions, variations and commissioning evidence as they happen rarely face a scramble at practical completion. Automated record capture, the sort BRCKS builds its site diary and snagging tools around, exists precisely because manual reconstruction is where most delays start.

— James

Reduce handover admin with BRCKS

BRCKS is the alternative to chasing paper trails and WhatsApp threads for handover records: instead of reconstructing a change-control log from memory, you’ve got a searchable project history built automatically as the job runs. Photo-led snagging logs each defect against the right project with a timestamp, so your handover pack and completion certificate application draw on records that already exist rather than ones assembled the week before.

BRCKS

Versioned as-built files, RAMS and drawings sit against the project rather than scattered across email chains, and the branded client portal gives the client visibility on progress and defects without a phone call. Fewer missing documents means fewer delays to the completion certificate, and a clearer defect record means fewer disputes during the defects liability period.

Subcontractors and clients get free access, so the whole team is working from the same snagging app rather than parallel spreadsheets. Check pricing or run the numbers on the savings calculator to see what 30-plus minutes a day back on admin is worth on your next handover.

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FAQ

What are the 8 stages of the RIBA Plan of Work?

The RIBA Plan of Work runs through Stages 1 (Preparation and Briefing), 2 (Concept Design), 3 (Spatial Coordination), 4 (Technical Design), 5 (Manufacturing and Construction), 6 (Handover), to Stage 7 (Use). These stages cover the full project lifecycle from initial idea to occupied building.

What happens during RIBA Stage 6 handover specifically?

Stage 6 covers completing commissioning, finishing snagging, and transferring statutory and operational records to the client, including golden thread extracts where the building falls under Building Safety rules. It runs from practical completion to the end of the defects liability period, which the RIBA Stage 6 checklist typically sets at six or twelve months.

What documents are needed for a completion certificate application?

A completion certificate application in England needs up-to-date as-built plans, the change-control log, and a client confirmation statement, as set out in GOV.UK guidance. Local authorities then have defined periods to review the application and inspect the works before issuing the certificate.

What are the RIBA Stage 3 deliverables?

Stage 3 (Spatial Coordination) deliverables typically include coordinated spatial designs across all disciplines, an updated project strategy, and outline specifications ready for technical design. It’s a different stage from handover entirely, focused on resolving design coordination before detailed technical work begins in Stage 4.

How does software like BRCKS support Stage 6 handover?

BRCKS builds a searchable project record automatically as the job runs, capturing photo-led snags, variations, and commissioning evidence against the right project rather than reconstructing them at handover. Pricing starts from £40 per seat per month billed annually, with subcontractors and clients included free.

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How BRCKS Can Help

Navigating the complexities of RIBA Stage 6 requires meticulous attention to detail, but BRCKS simplifies this transition by centralising your documentation and handover workflows. By using our platform to manage snagging lists and compliance records in real time, you can eliminate the stress of manual tracking and ensure every requirement for your completion certificate is met. BRCKS is designed to bridge the gap between construction and operation, providing the clarity needed for a seamless project closeout. We invite you to explore how our software can streamline your next handover and keep your projects moving forward. Learn more at BRCKS and explore our full feature set.


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