Major Renovation, Seaforth
Owner's representativeHIA NSW Residential Building Contract — Cost Plus Basis
Budget price: ~$2.5M (incl. GST)
52-week engagement
Challenge
Major renovation including bushfire compliance upgrades, complete interior renovation, new lift installation, and garage extension.
Role & scope
Owner's representative
- Engaged as the Owner's Representative with full authority over contract administration, claim validation, and variation management
- Advised the owner on all progress claims, proposed variations, and contractual notices — acting as the commercial filter between owner and builder
- Reviewed builder's cost substantiation against scheduled charge out rates and tracked cumulative cost of building works
- Maintained contract registers (variations, notices, claims) and monitored compliance with contractual time bars
Result
Key contract features managed:
- Cost transparency maintained — every progress claim reviewed against scheduled charge out rates so the owner only paid what was properly substantiated
- Cashflow kept moving via accurate, contract compliant progress certifications on a monthly cycle
- Variations assessed for entitlement and quantum before owner approval, with a clean audit trail
- Owner's contractual rights protected through disciplined notice and time bar monitoring
- Cumulative cost of building works tracked against the ~$2.5M budget, giving the owner real time visibility on spend