This case is a hard lesson for builders, principals and project managers. Security of payment gives contractors a fast cash-flow pathway, but it does not erase the need to prove that the contractual milestone has actually been reached when the final dispute is fought out.
The appeal record showed a familiar construction dispute pattern: staged payments, alleged delay, suspension, competing breach notices, termination, an adjudication certificate and later court proceedings about defects and completion costs. The builder relied on a quantity surveyor report, but the primary judge had rejected it because the author was not called and the report did not comply with expert evidence rules. That left the owners' expert evidence as the evidence accepted on lock-up stage.
For small construction businesses, the lesson is evidence discipline. If a stage claim says brickwork and roofing are complete, the file should show that with site photos, inspection records, contract stage wording and admissible expert evidence if needed. Payment claims, breach notices and termination letters should be written as if a judge may later compare every word against the works actually done.