NBN pit and pipe guides

These guides summarise NBN's published standards and our experience across more than 300 developments. They are general guidance, not a substitute for NBN's current standards, which we check before every design.

• How the NBN new developments process works

  Every step from design to NBN's Certificate of Practical Completion, and where projects lose time.

• NBN for a duplex or small subdivision: what to sort before design

  Eight things to sort before NBN design on a duplex, triplex or subdivision of up to about 20 lots.

• SDU or MDU: which NBN design does your development need?

  Subdivisions, duplexes, townhouses, super lots and apartments, and the rules for each.

• NBN pits and conduit: a plain guide for developers

  Pit types, conduit sizes, NBN's pit capacity table, clearances, bends and depth of cover.

• How to prepare CAD plans for NBN pit and pipe design

  A checklist for your DWG plans, and the missing details that slow jobs down.

• What's in an NBN pit and pipe design package

  The drawings and files you receive, what you upload to NBN, revisions, and exclusions.

• How long does NBN pit and pipe design take?

  Our two-week turnaround, what affects it, and NBN's stages after design.

Service pages

• SDU pit and pipe design: subdivisions, duplexes and triplexes
• MDU pit and pipe design: apartments, townhouses and super lots
• Pricing and calculator
• Frequently asked questions