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Why Are We Still Chasing Subcontractors for O&M Manual Content in the Last Fortnight Before Practical Completion?

Main contractors chase subcontractors for O&M manuals and as-built mark-ups at completion. We request each package's documents while the trade is on site.

Updated 3 min readBy SpiderHunts Technologies

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Quick answer — TL;DR

Handover files are late because nobody asks for the documents until the end, when the subcontractors who hold them have moved on. We build a handover tracker that sets out, per trade package, every document the client's handover requirements call for, requests each one as the trade starts, collects uploads through a link, checks them against the list and assembles the O&M file as the job goes.

Two weeks to practical completion, and a box file

The building looks finished. The client's facilities manager asks for the O&M manual, the as-built drawings, the product data sheets, the commissioning records and the warranties. Your site manager opens a box file and a shared folder. The roofer's guarantee has not arrived. The M&E firm's commissioning records are waiting on a sub-subcontractor. The window supplier's installation certificate was emailed to someone who has since left. The flooring contractor finished three months ago and is now hard to reach.

Most of the last fortnight goes on chasing paperwork rather than finishing the building.

Why the handover file is always last

The O&M file is treated as an end-of-job task, but it is made of documents that each belong to a moment in the job. A trade's product data exists when it orders; its installation records exist when it finishes. Asking for everything at the end means asking firms that have gone, about work they have forgotten.

  • Nobody lists the required documents per package at the start.
  • Subcontract orders mention O&M information in general terms only.
  • Documents arrive by email to different people in different formats.
  • Red-line mark-ups for as-builts sit in site offices, not with the designer.
  • Final payments are released before the documents are complete.

What a late handover file costs

Handover drags or happens with an incomplete file and a list of outstanding items that follows you for months. Your client's facilities team starts running a building without the information it needs, and comes back to you for it. Site managers stay on a finished job to chase paper instead of starting the next one. Whatever your contract says about handover information, and your advisers are the people to ask about that, a late file damages how the client remembers the job.

The handover tracker we build

  1. At the start of the job, the client's handover and O&M requirements are turned into a checklist per trade package: product data, installation records, test and commissioning records, warranties, as-built information.
  2. Each subcontractor gets its own list and a secure upload link when its order is placed, so it knows from day one what it will need to provide.
  3. Items are requested at the right point: product data when materials are ordered, installation records when an area is signed off, warranties on completion of the package.
  4. Uploads are checked against the list. File type, project name and the product or area are read, and anything unclear goes to your document controller.
  5. Red-line mark-ups from site are photographed and logged against the drawing, then sent to the designer for as-built updates.
  6. Outstanding items per package are shown to the QS before final payment is approved.
  7. The O&M file is assembled in the structure the client asked for, with an index, and can be issued in the format they need.
Document typeRequested whenHeld against
Product data sheetsMaterials orderedPackage and product
Installation recordsArea signed offPackage and area
Test and commissioning recordsCommissioning completeSystem
Warranties and guaranteesPackage completePackage
As-built mark-upsAs changes happen on siteDrawing

Handover without the box file

By the time the building is finished, most of the file already exists, because each item was collected while the trade was on site. The last weeks are spent on the few items that are genuinely late, and you know which ones. The client gets an indexed O&M file on the day. And the QS has a clear view of which subcontractors have not provided what they owe before releasing money.

Does your handover look like this?

  • Handover documents are chased in the last weeks of the job.
  • Subcontractors who finished months ago still owe information.
  • As-built mark-ups never reach the designer.
  • O&M files are assembled by hand from email attachments.
  • Final payments go out before documents are received.

FAQ

Frequently asked questions

The questions readers ask us after this guide.

Still have a question?

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Ask about your project

Can it follow the client's own O&M structure?

Yes. The checklist and the final file are built to the structure the client specifies.

Does it check the technical content of documents?

No. It checks that the right document is there against the right item. Whether the content is correct is for your team and the designers.

Can it produce a digital handover rather than a paper file?

Yes. The file can be issued as an indexed digital pack, or loaded into the client's system where it has an import route.

What about sub-subcontractors?

Your subcontractor can forward its link, and uploads still land against its package.

What affects the cost?

The number of packages per job, the client's handover requirements, and where your drawings and documents live today.

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