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FIELD NOTE · AI

What an AI cost agent actually catches on a live fit-out

Three weeks of CostGuard alerts on a DIFC office job, what the commercial team did with each one, and the two it correctly ignored.

28 July 2026 6 min read BuildFlow product team
What an AI cost agent actually catches on a live fit-out
Buyer’s guide · BuildFlow Insights

An AI agent in construction software is only worth the name if it changes a decision. Over three weeks on a mid-sized DIFC office fit-out, CostGuard raised eleven alerts. Nine led to an action. Two were correctly left alone.

01

Procurement above allowance, caught before the PO

The most valuable alerts came at the requisition stage. A joinery package was requested at a rate eleven per cent above the BOQ allowance because the specified veneer had moved price. Because the flag arrived before the purchase order, the commercial lead had the option of a variation rather than an absorbed loss.

KEY POINTS
Four alerts on material rates above BOQ allowance
Three on labour hours trending past the priced productivity rate
Two on variations executed on site without an approved order
Two flagged and dismissed as legitimate scope changes already priced
02

The two it was right to ignore

Both dismissed alerts were cases where a variation had been approved verbally by the client representative and priced correctly, but the paperwork lagged by a day. The agent had no way to know that — and flagging it was the correct behaviour. An agent that only raises certainties is an agent that misses the expensive cases.

The test is not whether the agent is always right. It is whether a human would have found the same thing in time.
03

Where it made no difference

Alerts on labour hours were the least actionable. By the time a trade is trending over its priced hours, the schedule usually dictates finishing the work. The value there is not in the current job but in the rate library for the next tender — which is why the agent writes the variance back to the historical rates.

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