External worksExternal works, civil and landscapingHigh riskSource checkedReviewed 11 August 2026
External drainage falls are wrong
External drainage falls are wrong means the project cannot safely rely on the current assumption. Treat it as an open issue until the relevant evidence and authorised response agree.
External interfaces control access, drainage, moisture clearances, retaining stability, neighbour relationships and final authority sign-off. For external drainage falls are wrong, the response must follow current project documents and competent project-specific advice.
Cost impact
Record direct cost, professional fees, rework, delay, additional cover/premium, quote changes and contingency use. Obtain written pricing before approval where possible.
Programme impact
Identify the affected activity, hold point, critical-path relationship and required decision date. Update the short-term programme and notify affected trades.
Consent / compliance impact
Check the consented documents and obtain advice before changing approved work or a required inspection sequence.
Contract impact
Check responsibility, notice time, extension-of-time, variation, payment, suspension, defect and insurance provisions with the contract administrator or lawyer before asserting rights.
Safety impact
Reassess site risk before anyone investigates, protects, removes or reworks the affected item.
BuildPath NZ is an educational guide and project-management resource only. It does not replace advice from Auckland Council, a planner, architect, engineer, surveyor, quantity surveyor, lawyer, accountant, lender, insurer, insurance broker, WorkSafe, Watercare, utility provider, building consent authority or other qualified professional.
Insufficient data to verify — confirm against the current consented drawings, specifications, Auckland Council requirements, Auckland Unitary Plan, NZ Building Code, relevant NZ Standard, consultant advice, manufacturer instructions, insurance broker, insurer, lender, lawyer, accountant or project contract.