Need a Sydney Water Section 73 Certificate?
Building, subdividing or developing? Let Opal Water Management guide you through the Section 73 process. Send us your project details and plans to get started.
Over 20 years' experience and more than 5,000 Sydney Water Section 73 applications managed.
Get started with your Section 73 enquiry
Section 73 Compliance Certificates
A Section 73 Compliance Certificate is a mandatory statutory document issued by Sydney Water confirming that a land subdivision, dual occupancy, or commercial development has adequate water and wastewater infrastructure.
Without a Section 73 Certificate, local councils will not register linen plans or release final subdivision certificates, and principal certifiers cannot issue final occupation certificates.
Opal Water Management manages the entire Section 73 lifecycle: from applying for the initial Notice of Requirements (NOR), managing Developer Works Agreements, to final asset inspection and clearance issuance. Our dual identity alongside GHP Plumbing & Civil ensures engineering feasibility from day one.
Opal Water Management is an accredited Water Service Coordinator (WSC) authorised by Sydney Water to issue Section 73 certificates and manage developer works compliance across NSW.
Who This Service Is For
- Land developers executing residential or industrial land subdivisions
- Builders undertaking dual occupancy, townhouse, or apartment developments
- Property owners creating secondary dwellings or strata subdivisions
- Town planners and certifiers needing statutory Sydney Water clearance
How Opal Water Management Assists
Formal application for Sydney Water Notice of Requirements (NOR) based on DA conditions and site servicing capacity.
Assessment of developer charges, network amplification requirements, or major/minor works triggers.
Coordination of civil constructor tendering, field supervision, and pegging compliance if main extensions are required.
Final lodgement of developer compliance documentation and direct issuance of the Section 73 Certificate.
What to Provide With Your Enquiry
To assess your project promptly, please supply as much of the following as you have available. You can attach these documents directly in the enquiry form above.
- Approved subdivision plan or proposed linen/strata plan showing lot layout
- Council Development Consent (DA) with any Sydney Water-related conditions highlighted
- Site address, lot/DP numbers, and existing water/sewer servicing information if known
- Indicative development timeline and any prior Notice of Requirements correspondence
Key Deliverables & Documentation
- Sydney Water Notice of Requirements (NOR)
- Developer Works Agreement Coordination
- Water & Sewer Servicing Feasibility Reports
- Final Section 73 Compliance Certificate
Prefer a Direct Discussion?
Speak directly with an accredited Water Service Coordinator at our Sydney HQ or Regional Dubbo hub.
Related Services
Building Plan Approvals (Tap-In)
Assessment and lodgement for building near or over Sydney Water mains.
Sydney Water Major & Minor Works
Civil sewer main extensions and water main relocation management.
Hunter Water Section 50
Regional Hunter Water compliance certification for Newcastle and Hunter sites.