Wastewater design reports for South Australian properties
Septic and AWTS designs, site and soil reports ready for council, with a quicker turnaround than most.
When do you need a wastewater design?
If your property isn’t on mains sewer, council usually needs a wastewater design before it approves:
- Building a new home or extending on an unsewered block
- Adding a granny flat, studio or extra bedrooms to a home on septic
- Replacing an old or failing septic tank
- Turning a property into an Airbnb or short-stay accommodation
- Wastewater for small vineyards and rural businesses
- Responding when council has asked for a wastewater report
Not sure if you need one? A quick call usually sorts it out.
Why Seed
Quicker than most
With a team on every job, our reports come back faster than many engineering firms.
Designed for your block
We test your soil and check the slope on site, so your system suits your land, not a template.
No need to be home
We just arrange a time to visit. You're welcome to come along.
We stay until it's approved
If council has questions, we answer them and adjust the design.
How it works
1. Get in touch
Send your address, what you're planning, and anything you have: plans, old reports or soil logs.
2. Free quote
We email you a fee outline to confirm.
3. Site visit
We review your site first, then test the soil, measure the slope and photograph the site.
4. Report and design
You get a site and soil report with your system layout, ready for council.
5. Through to approval
We handle council's questions until it's approved.
For plumbers and planners
Send us the job in one go: site address, plans, the scope, and details of any existing system. We keep you in the loop, deal with council questions directly, and send the report to whoever needs it.
Our wastewater services
- Septic and AWTS design (site and soil reports)
- Indicative underfloor plumbing plans
- Preparing your council application
- Civil site works and drainage plans (stormwater, site levels, battering)
- Site contamination investigations (PSI and LSI)
- As-constructed drawings
Common questions
It depends on your site and our workload at the time. We’ll give you a realistic timeframe with your quote, and we’re typically quicker than most firms.
No. You’re welcome to be, and for complex sites we may ask you to be.
Every site is different, so we quote each job. Quotes are free and there’s no obligation.
Yes, we can prepare the council application as an optional extra.
Ready to get started?
Send us your address and plans and we’ll come back with a free quote.