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Complex works

Complex works are more technically challenging assets, where Hunter Water wishes to focus more of its attention including water and sewer mains greater than and including 300mm in diameter, water and sewer pump stations, pressure sewer systems, works with electrical and mechanical components, stormwater, or those being assessed under the Funding of Growth (FOG) Infrastructure standard.

You will be advised of the type of works and the assets required for your development in your requirements letter.

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What is the Complex Works process?

  1. Receive requirements letter
    You will be advised of the type of complex works assets required for your development in your requirements letter.
  2. Execute complex works deed
    After you receive your requirement letter, a Complex Works Deed will need to be executed by the developer and Hunter Water. The deed should be signed by the owner and submitted to Hunter Water at developer.deed@hunterwater.com.au for execution.
  3. Engage an accredited design consultant
    You will need to engage an accredited design consultant to prepare a complex works design. Please refer to our list of Accredited Design Consultants to select a suitable party to complete the design review process.
  4. Request inception meeting
    Your accredited design consultant, should contact Hunter Water to arrange an inception meeting. At this meeting we will discuss the scope of the design, which will provide the design consultant with the necessary guidance to begin preparing the design.
  5. 15% design
    The accredited design consultant is required to submit the preliminary asset design report and detailed design. On completion of Hunter Water's design review, we will discuss the outcomes with the design consultant including any non-conformances with the design standards, and to agree on the requirements to proceed to the 85% design review phase. This design review will take approximately 4 weeks for initial review and 3 weeks for any subsequent reviews.

    Design and inspection fees for complex works are charged based on Hunter Water's Developer Fees and Charges Schedule. Some projects such as pump stations that require radio path surveys may incur technical services fees.
  6. Complete an REF
    Depending on the location and scope of works required, your Design Consultant may need to submit a Review of Environmental Factors (REF).
  7. 85% design
    The accredited design consultant is required to submit the amended design submission after the 15% design review. Any final design issues will be discussed with the designer and closed out to finalise the design review process. This design review will take approximately 4 weeks for initial review and 3 weeks for any subsequent reviews. Upon completion of any required changes, Hunter Water will advise that the designer can submit the 100% design.
  8. 100% design
    The accredited design consultant is required to submit the final design submission and the Complex Works design submission checklist. Hunter Water will confirm the submission is complete and all fees have been paid before issuing Authorisation to Proceed (ATP) to construction.
  9. Construction
    The Accredited Construction Contractor contacts Hunter Water's project officer to plan the commencement of works and submit project documentation in accordance with the Developer Works Manual. The accredited construction contractor captures 'Work As Constructed' data throughout the construction, before issuing a request to connect to Hunter Water’s networks. Once connection is permitted, the accredited construction contractor connects to the networks then tests and confirms functionality.
  10. Project finalisation
    Upon issue of the completion certificate by Hunter Water and having received securities from the developer, ownership of the works transfers to Hunter Water, and the 24-month Defects Liability Period (DLP) commences. The finalisation package is prepared and submitted to Hunter Water by the accredited construction contractor where all required asset and project information is provided as part of the transfer of ownership. Hunter Water will review the package and provided all conditions in the requirements letter have been met, a Section 50 certificate will be issued.
  11. Return of Securities
    After 24 months, the developer submits a request for the return of project security. Hunter Water will complete a site audit of the works ensuring no outstanding defects are found and return the held security.