Charmhaven NSW 2263 · Servicing the whole Central Coast
Free estimates · By appointment @coastwide_earthworx
Get a free estimate Call 0403 063 439
Mini excavator digging a drainage trench with stormwater pipe laid

Septic, sewer and drainage

Septic installs and sewer work alongside licensed plumbers, built to local regulations, plus practical solutions for blocks that will not drain.

What’s included

  • Excavation for septic systems
  • Sewer and stormwater trenching
  • Drainage solutions for wet blocks
  • Agricultural and subsoil drains
  • Stormwater pits and lines
  • Reinstatement after the work

Septic systems, done properly

Installing a septic system needs council approval and a licensed plumber. We work in conjunction with licensed plumbers to install your system so it meets local regulations and requirements, and we handle the excavation, placement and backfill.

Sewer and stormwater

New connections, replacements and extensions all start with a trench. We dig to the depths and falls the plumber needs, work carefully around existing services, and reinstate the ground afterwards.

Blocks that won’t drain

Water sitting in the yard, soggy lawns and water heading towards the house are common on the Central Coast. The fix is usually a combination of levels and drainage. We will look at where the water is coming from and suggest a solution that deals with the cause.

Common questions

Something else you want to know? Call us on 0403 063 439.

Do you install the septic system yourselves?

We do the earthworks and work alongside licensed plumbers, who handle the plumbing and the certification.

Do I need council approval for a septic system?

Yes. On-site sewage systems need council approval. Your plumber or system supplier will usually help with the application.

Can you fix water pooling in my yard?

Usually, yes. Most drainage problems come down to levels, subsoil drainage or both. We will look at the site before recommending anything.

Will you locate existing services before digging?

Yes. We check for existing services before we start and dig carefully around them.

Other services

All services
Excavator on the sand site beside the new house before landscaping

Residential excavation

New homes and renovations: footings, foundations, driveways, retaining walls and site cuts. Every stage handled with precision so your builder walks onto a clean, level start.

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Kobelco mini excavator working a tight-access slope between retaining wall posts

Tight access excavation

Narrow side access, sloping backyards and under-house work. We started as Coastwide Mini Excavations and still take the tight and tricky jobs others avoid.

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Excavator placing a sandstone block on a new retaining wall

Retaining walls

Sandstone block and sleeper retaining walls, excavated, drained and built by licensed structural landscapers — from garden terraces to walls for new homes.

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Finished new house with lawn, gravel driveway and sandstone edging

Structural landscaping

Fully licensed. Driveway grading, swimming pool digs, retaining walls, sandstone blocks and entertaining areas — the heavy end of transforming a property.

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Excavator grading a commercial building pad on an industrial estate

Commercial excavation

Site preparation, demolition, grading and bulk earthworks for commercial projects of all sizes. Bigger machines now, the same attention to detail.

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Excavator with grab clearing scrub for a fire break on a bush block

Land clearing & fire breaks

Hazard reduction and fire breaks before summer, or clearing to get a block ready for construction. Fast, tidy, and done with the right attachments.

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Excavator clearing a storm-fallen tree from a driveway

Emergency excavation

Storm damage, collapsed drains, burst services, natural disasters. Contact us any time for fast, reliable machines on site when it matters.

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Get a free estimate

Tell us what you’re digging, where it is and when you need it. We’ll come out, look at access and give you a straight price.

  • 0403 063 439
  • Charmhaven NSW 2263 · Central Coast
  • Site visits by appointment
Free estimate