Construction job costing software: tracking cost against the programme

Construction job costing software tracks cost per project against the contract sum while the project is still running. Construction makes this harder than in most industries: money is retained, scope changes constantly through variations, subcontractors are valued rather than simply invoiced, and the cost that matters is cost against work completed rather than cost against calendar. A system that cannot express those four things produces a monthly report nobody trusts.

What construction job costing software must handle

• Cost codes per element of work, consistent across estimate, purchase and valuation.
• Variations as tracked items with their own status: instructed, priced, agreed, disputed.
• Subcontractor valuations with retention held and released, plus payment terms.
• Committed cost — orders placed but not yet invoiced — which is what turns a surprise into a forecast.
• Cost to complete and forecast final cost, updated monthly rather than at handover.
• Preliminaries and site overhead tracked separately from measured work.
• Retention on both sides: what the client holds from you and what you hold from subcontractors.

Cost against completion, not against the calendar

The question a contractor needs answered every month is whether the cost incurred matches the work done. A project 40% through its programme with 55% of its budget spent is in trouble even if it is on schedule, and that only shows when cost is compared with measured completion rather than with time elapsed. This is why valuations and cost reports have to be produced on the same cut-off date — different dates make the comparison meaningless.

Track committed cost, not just invoiced cost. Orders placed with suppliers are money already spent; a report that ignores them shows a healthy project right up to the month the invoices arrive.

The monthly numbers per project

1. Contract sum plus agreed variations — the current revenue position.
2. Cost incurred to date, split labour, materials, subcontractors and plant.
3. Committed but uninvoiced cost, taken from open purchase orders.
4. Value of work completed at the cut-off date, from the valuation.
5. Forecast cost to complete, built from remaining scope rather than from the original budget.
6. Forecast final margin, and the variance against the margin tendered.

Ettex Sheets can hold this while a contractor is running a handful of projects: cost codes per project, a committed-cost tab fed from purchase orders, valuations by cut-off date and a forecast tab that recalculates the final position. The same structure underlies any dedicated system, and it shares job codes with the wider job costing software approach for smaller works.