O&M manuals: what to include and how to stop them delaying handover

An operation and maintenance (O&M) manual tells the building owner how the building works, how to look after it and what was installed. It’s one of the last things finished on most projects, and one of the most common reasons handover and final payments slip.

What to include in an O&M manual

• Project and contact details: client, designers, contractors and key subcontractors
• Building description: use, structure, fire strategy summary and key systems
• As-built drawings: clearly marked final revisions
• Product and material information: data sheets for what was actually installed, not what was specified
• Operating instructions: for M&E systems, controls, lifts, fire alarm and smoke control
• Maintenance schedules: what needs servicing, how often and by whom
• Test and commissioning certificates: electrical, water, gas, ventilation, fire systems
• Warranties and guarantees: with start dates and contact details
• Health and safety file information: residual risks and safe maintenance access
• Fire safety information: required under Regulation 38 of the Building Regulations, and on higher-risk buildings part of the golden thread

Why O&M manuals cause delays

• Subcontractors send information late, incomplete or in different formats
• Data sheets show specified products, not the substitutes actually installed
• Commissioning certificates arrive after the manual “deadline”
• Nobody owns checking the content, only collecting it

How to build O&Ms during construction

• Set the index at the start. Agree the structure and file naming before the first package begins.
• Collect as you install. Make product data and installation records a condition of the inspection sign-off at each hold point.
• Link records to locations. Inspection records in a platform such as Field View show where each product went.
• Review monthly. Track missing items per package in your monthly QA report, alongside NCRs and inspections.
• Tie it to payment. Many contracts allow retention or final payment to depend on complete O&M information. Make that clear to subcontractors early.

O&M manuals and the Building Safety Act

On higher-risk buildings, handover information must be accurate, digital and kept up to date for the accountable person. A manual assembled from memory at the end won’t meet that standard. One built from inspection records made at the time will. Read more in our Building Safety Act guide.

Need QA evidence you can rely on? Construction QA sets up your records, inspects at hold points anywhere in the UK and reports monthly or on request. See sample reports or book a visit.