Civil Stormwater Estimates

Pricing civil stormwater requires a precise understanding of large-diameter pipes, complex drainage systems, and critical filtration components.

Whether your project is in Sydney or Melbourne, a well-prepared estimate ensures you account for all necessary infrastructure, avoid unexpected costs, and meet council requirements.

Key Considerations for Your Civil Stormwater Estimate

When preparing a civil stormwater estimate, make sure to include:

  • Large-diameter RCP Class 4 pipes – Stormwater pipes typically range from 375mm to 900mm, with Melbourne projects generally requiring larger sizes than Sydney.
  • Stormwater drainage flow – Water is collected from downpipes, directed to an OSD tank, and then discharged into the council stormwater network.
  • Pits and junction pits – Sizes start from 450mm and go up to 1200mm, often with sealed lids for junction pits.
  • Filtration devices in OSD tanks – The number of filters required depends on the expected water flow, so ensure this is factored into your pricing.
  • Pit inserts – These can be easy to overlook in the plans, so carefully check the drawings for any specified inserts.
  • Subsoil drainage – Often represented as a thin line in drawings, subsoil drains are easy to miss but must be included in your estimate.
  • Stormwater pump-out pit – If the design requires a pump-out system, ensure you allocate sufficient time and resources for installation.
  • Modification works on existing sites – If you’re working on an existing development, be on the lookout for modification requirements that could impact the project scope and cost.

Why Your Estimate Needs to Be Detailed

Civil stormwater plumbing involves major infrastructure and precise coordination.

 

A thorough and well-structured estimate helps ensure all pits, pipes, pumps, and filtration systems are accounted for, preventing costly surprises during construction.

Get a Precise Estimate for Your Civil Stormwater Project

Whether you’re pricing a new development or modification works on an existing site, a comprehensive stormwater estimate is key to staying on budget and on schedule.

 

Reach out today to get an accurate and competitive civil stormwater plumbing estimate.