How should an ELV or fire-safety contractor track project margins?

Short answer

Track margin continuously against live costs rather than reconciling at project close. That requires expenses to be captured as they occur in the field, materials to be tracked by serial number against each project, and approvals to route automatically so costs are recorded when committed. When these connect in one system, every project shows a current margin instead of a year-end surprise.

Why margin is usually discovered too late

In most contracting businesses, costs arrive from several directions at different speeds. Site expenses appear on paper days later, material issues are recorded informally, and supplier invoices arrive weeks after delivery.

The project's true position therefore only becomes clear at closure, when nothing can be done about it. Projects that quietly went underwater in month two are discovered in month nine.

Capture cost at the moment it happens

The single biggest improvement is moving expense capture to the field. When a site engineer records a cost on their phone as it occurs, the project's numbers update the same day rather than after a paperwork cycle.

This only works if the tool is genuinely quick to use. If logging an expense takes longer than writing it on paper, people will keep writing it on paper.

Serial-linked inventory closes the material gap

Detectors, panels, cameras and controllers are high-value and individually identifiable. Tracking each unit by serial number from purchase through issue to installation ties material cost precisely to a project instead of to a general stock pool.

The same record answers warranty and AMC questions years later: which device is at which site, when it was installed, and what it is still covered for.

Approvals as a cost-recording mechanism

Approval workflows are usually thought of as control. They are also the moment a cost becomes real and can be recorded.

Routing expenses and purchase orders automatically — for example requiring director approval above a set value — both maintains control and timestamps commitments so the margin calculation stays current rather than retrospective.

Key facts

Margin visibility: Live per project, recomputed as costs are approved
Material tracking: By individual serial number, from purchase to installation
Data isolation between companies: Enforced in PostgreSQL by row-level security