Detailed site investigation
$3,000 – $6,000
Phase 2 sampling with NATA testing
What’s included: Detailed site investigation
- Soil and groundwater sampling
- NATA laboratory analysis
- Contamination mapping
- Remediation recommendations
Site remediation
Site remediation Sydney
Investigate and treat contaminated soil or groundwater before development or a change of use. We plan the cleanup around the contamination found and the intended use of your land.
From $3,000
Free initial visit and quote. Detailed investigation is separately priced.
- NATA laboratory testingSoil and groundwater investigation
- Independent validationSampling and analysis against the project’s targets
- $20M public liabilityWorkers compensation and professional indemnity
What we do
Understand the ground before choosing the treatment.
We work on residential, commercial and industrial sites, from localised contaminated fill to more extensive soil and groundwater problems.
Investigation and planning
Phase 1 and 2 assessments, sampling and a Remediation Action Plan.
Contamination cleanup
Excavation and disposal, treatment or containment of contaminated soil.
Validation and reporting
Independent sampling against the targets, with waste and disposal records.
Asbestos-contaminated soil needs specific assessment. The material’s form and condition determine the removal licence required. Our asbestos removal scope is Class B non-friable material; friable asbestos is removed by our Class A licensed partner. We confirm the work we can undertake after investigation. Understand our asbestos removal scope.
Plan your budget
Site remediation prices.
The free initial site assessment and quote are separate from a detailed contamination investigation. The published investigation and remediation categories below are paid project scopes.
Minor contamination
$8,000 – $18,000
Localised fill or hydrocarbon contamination
What’s included: Minor contamination
- Excavation and disposal
- Backfill with clean material
- Validation sampling
- Clearance certification
Moderate contamination
$18,000 – $35,000
Former service station, workshop or industrial site
What’s included: Moderate contamination
- Detailed remediation plan
- EPA notifications
- Extended excavation
- Independent validation
Major or complex
$35,000 – $50,000+
Heavy metals, extensive petroleum or groundwater
What’s included: Major or complex
- In-situ treatment options
- Ongoing monitoring
- Regulatory liaison
- Site Audit Statement if required
Prices depend on contamination type, depth and volume, the chosen treatment and disposal requirements. The major/complex category is open-ended. Your written quote identifies investigation, treatment, validation and any external audit or approval fees. Prices are in Australian dollars.
The process
From investigation to validation.
Investigate the site
Site history, then soil or groundwater sampling and NATA laboratory analysis.
Plan the treatment
A Remediation Action Plan, controls, waste classification and notifications.
Carry out the remediation
Material excavated, treated or contained; waste to authorised facilities.
Validate and report
Independent sampling and a validation report for the land’s intended use.
Validation for the land’s intended use
Cleanup targets depend on how the land will be used. Where a Site Audit Statement is required, an independent EPA-accredited site auditor issues it.
Trusted by
Builders, clients and Google reviews.
The builders and council shown here are clients Gabrael has carried out demolition for. The reviews are quoted from Google.
Serving Sydney since 1995, and Australian Trades Small Business Champion in 2023 and 2025. We recycle over 85% of demolition materials. Read about our recognition
Demolition contractor to Sydney builders and clients, including
“From start to finish, the whole process was professional, well organised and completed to a very high standard. … Zac and the demolition team did an outstanding job on site, with great attention to detail and excellent workmanship”
“Zac, Eddie and Victor went above and beyond expectations”
See the work
On site with Gabrael.
Our own crew and machinery on the job. See the full gallery
The Gabrael team on site 
Crew in protective coveralls hand-sorting masonry beside the excavator 
Demolition machinery and truck on site 
Cleared site with equipment alongside
Before you start
Site remediation FAQs.
The questions we are asked most before this work.
More demolition FAQsHow much does site remediation cost?
Detailed site investigation (Phase 2 sampling with NATA testing): $3,000 – $6,000. Minor contamination (localised fill or hydrocarbon contamination): $8,000 – $18,000. Moderate contamination (former service station, workshop or industrial site): $18,000 – $35,000. Major or complex (heavy metals, extensive petroleum or groundwater): $35,000 – $50,000+. These are indicative prices in Australian dollars. Each category has its own inclusions; the final scope and price follow a site assessment.
Is the contamination investigation free?
The initial site assessment and quotation are free. Detailed investigation, sampling, laboratory analysis and reporting are separately quoted work. The published site assessment category is $3,000–$6,000 for a Phase 2 investigation with NATA testing; it is not the free initial visit.
What contamination and treatment methods do you handle?
Our services cover petroleum, heavy metals, pesticides, herbicides, industrial chemicals and contaminated fill, with treatment selected from excavation and disposal, in-situ chemical treatment, bioremediation, containment and capping. Asbestos in soil is assessed separately: we remove non-friable material under our Class B licence, and friable asbestos is removed by our Class A licensed partner.
How long does remediation take?
Simple excavation and disposal may take 1–2 weeks; petroleum work can take 2–6 weeks and complex contamination 2–6 months. Bioremediation can take 6–12 months. These are indicative work periods, with investigation, approvals, testing and validation affecting the overall program.
Do you handle approvals and EPA requirements?
We coordinate applicable notifications, council approvals, waste classification and contaminated-land reporting as part of the agreed remediation plan. Not every site requires the same approvals or an independent audit. Responsibilities, external fees and the required documents are confirmed for the property.
Will I receive a validation report?
Yes. The remediation scope includes independent validation sampling and a Site Validation Report recording the results against the agreed cleanup targets. Where a separate Site Audit Statement is required, it is issued by an independent EPA-accredited auditor. Council, lender and purchaser requirements should be identified at the start.
What insurance do you carry?
We carry $20M public liability insurance, professional indemnity and workers compensation. Ask for the relevant insurance documents when discussing the work.
Free site assessment
Arrange a free site assessment.
Share the property address, intended use and any environmental reports, testing results or council conditions. We’ll discuss the investigation and work needed before preparing a written quote.
1300 329 6007am to 7pm, seven days.
Licensed DE2 · Class B asbestos · $20M insured · ★ 4.7 from 99 Google reviews