Building Plan Approval

If you are building or renovating it is more than likely that you will need Sydney Water Corporation (SWC) approval. 

This requirement will be outlined in your DA letter from your Council or your Complying Certificate paperwork. The process is called Building Plan Approval.

To enable you to go ahead with your proposed building work you will need Sydney Water Building Plan Approval.

Sydney Water will need to check your plans to ensure your new building will not damage any Sydney Water structure (like a sewer, lamp hole, manhole etc) which maybe located on or near your property. To check your plans you will need to submit your plans online to Sydney Water via their Tap in service and select Building Plan Approval. Either you can do this yourself or mgp can complete the Tap in application on your behalf.

The Sydney Water Tap In service will either approve your plans immediately or if they believe the proposed works will have an impact on their assets they will refer to you see a Sydney Water Coordinator, like mgp, for further review, advice and additional costs.


Tap In service referred me to see a Sydney Water Servicing Coordinator, what now?

This referral means that your plans impact a Sydney Water asset. mgp will ask you to send us your Tap In reference letter, architectural plans, a site survey (if available) and structural plans (if available) to assess what you need to do to attain your Building Plan Approval.


How do I get my plans stamped so I can go ahead with the build?

Once we have reviewed your plans your project will require a number of different stages to recieve the stamped plan. These stages will vary depending on what your are proposing to do, and what Sydney Water asset(s) are on or next to your property. Below outlines ALL the stages, please note some will not be relevant to you.

Stage 1 - On-site inspection & report

  • Onsite inspection locating sewer using sonar detection (including location pegs) and preparation of the Service Protection Report (SPR). The SPR will show the relationship of the SWC asset to boundary fences, surveyed structures and features, and the depth from surface levels. The SPR will have sufficient information to allow your architect and structural engineer to make any necessary adjustments to your plans ready for the Building Plan Approval process (BPA).

Stage 2 - Stamping plans

  • Building Plan Approval - once final architectural and structural plans are received we will stamp your building plans with conditional approval where required. A subject to requirements letter will accompany the stamped plans outlining any provisions needed to protect the SWC asset affected by thr proposed building works. The stamped plan is required by your certifier to assist with obtaining the construction certificate.

Stage 3 - Inspections

  • Only necessary when you are building directly over the sewer or closer than 600mm (this will be noted in your subject to requirements letter);
    • Concrete encasement inspection and issue of certificate including junction insertion certificate if required.
    • Piering validation inspection and issue certificate if required.


Additional Stage - Out of Scope Approval

  • Out of Scope Approval is an additional step to the approval process when you are building;
    • Near or over a non-pipe sewer infrastructure (eg tunnel, oviform) over 300mm
    • Any water or recycled water pipe
    • Any ventshaft
    • Proposed works on land with a Sydney Water easement
    • Proposed works on land with Sydney Water owned storm water infrastructure within 10m of the property boundary
    • Construction of a retaining wall over 1 metre
    • Any basement excavation deeper than 3m (and construction works) over or adjacent to a Sydney Water asset including any works resulting in anchors within or through the zone of influence of the Sydney Water asset
    • Any dewatering

With an Out of Scope application we will need to submit the Service Protection Report, final architectural and structural plans to Sydney Water for assessment and approval. This process can take up to 6 weeks from submission.

If you have any further queries please call our office on 9451 7555 or complete the form below.


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