Geotechnical Engineering Services

Providing expert geotechnical engineering services in NSW, VIC & QLD, including site investigations, soil testing, foundation design, and slope stability analysis. Ensuring safe, durable, and compliant solutions for residential, commercial, and infrastructure projects.

Site Investigation & Geotechnical Solutions

Geotechnical engineering evaluates soil, rock, and ground conditions to guide the safe design and construction of buildings and infrastructure. From foundation design and site investigations to slope stability and earthworks, our engineers ensure projects are structurally sound, compliant, and cost-effective.

Working across NSW, VIC & QLD, we deliver practical, reliable solutions for developers, builders, councils, and government agencies, following strict Australian Standards (AS/NZS).

Our Areas of Expertise

Our team specialises in civil and infrastructure engineering, delivering safe, compliant, and durable solutions for residential, commercial, and public projects across NSW, VIC & QLD.

Site Investigations & Soil Testing

Accurate site investigation and soil testing is the foundation of safe and reliable construction. We conduct thorough geotechnical assessments for residential, commercial, and civil projects, providing the data needed to inform design and construction decisions.

Our site investigation services include:

Soil sampling and laboratory testing – determining soil classification, load-bearing capacity, and geotechnical properties.
Groundwater assessment and risk analysis – informing foundation, drainage, and slope stability solutions.
Detailed reporting – fully compliant with AS 1726 – Geotechnical Site Investigations, providing clear guidance for construction planning and council approvals.

These assessments help reduce risk and support efficient, compliant project delivery.

Foundation Design & Analysis

Our engineers provide tailored foundation solutions to ensure long-term stability and cost efficiency for all project types.

Services include:

Footings, slabs, and deep foundations – engineered to suit soil conditions and site constraints.
Integration with structural engineering – ensuring foundations support residential, commercial, or civil structures effectively.
Optimised design for cost and performance – reducing construction risks and improving longevity.

By combining geotechnical analysis with structural requirements, we deliver reliable foundations that meet all regulatory standards.

Slope Stability & Landslip Assessment

For sites with sloping terrain or high-risk areas, our team provides specialist slope stability and landslip assessment services.

We deliver:

Risk modelling and stability analysis – identifying potential hazards and required interventions.
Retaining wall and stabilisation design – engineered for safety and long-term performance.
Compliance with Australian Geomechanics Society guidelines – ensuring best-practice approaches for slope management.

These services protect properties, reduce hazards, and support safe construction on challenging sites.

Earthworks & Retaining Structures

We design and oversee earthworks and retaining structures to manage site topography and ensure safe construction.

Our earthworks services include:

Cut and fill operations – optimised for site grading and soil stability.
Retaining wall and ground reinforcement design – meeting structural and environmental requirements.
Erosion control and soil stabilisation measures – in compliance with AS 4678 – Earth Retaining Structures.

These solutions improve site safety, construction efficiency, and long-term structural integrity.

Frequently Asked Questions

What is geotechnical engineering and why is it important?

Geotechnical engineering focuses on soil, rock, and ground conditions that affect the stability and safety of structures. It is critical for designing foundations, retaining walls, pavements, and slopes. Without proper geotechnical investigations, developments face risks such as cracking, settlement, or failure. Learn more from Geoscience Australia.

Do I need a geotechnical report for council approval?

Yes. Most residential, commercial, and infrastructure projects require a geotechnical or soil report to obtain Development Applications (DA) or Construction Certificates (CC). These reports demonstrate compliance with the National Construction Code (NCC) and local planning requirements via the NSW Planning Portal.

What Australian Standards apply to geotechnical engineering?

Our designs and reports comply with key standards, including:

These standards ensure compliance, safety, and long-term performance.

How do geotechnical engineers support foundation design?

Geotechnical engineers analyse soil strength, settlement, and groundwater conditions to recommend the most suitable foundation type. At Apex, we work closely with our Structural Engineering Consultants to design safe and cost-effective solutions for residential, commercial, and civil projects.

Can geotechnical engineers help with slope stability and landslip risks?

Yes. We provide slope stability modelling and design remediation measures to prevent erosion or collapse. Our assessments follow best practices from the Australian Geomechanics Society and are essential for developments on sloping or unstable ground.

Do you provide geotechnical services for infrastructure projects?

Absolutely. Apex delivers site investigations, pavement design, and earthworks support for roads, bridges, and subdivisions. These services are often integrated with our Civil & Infrastructure Engineering and Stormwater Management teams to ensure seamless project delivery.

What Our Clients Say

Our reputation is built on successful project delivery and long-term partnerships. Here’s what clients say about working with Apex Civil Engineers:

Samir was of really great service with a professional approach and can do attitude. I was impressed with APEX CE’s prompt service and quick delivery time. Look forward to our next business opportunity in the near future.

I recently used the APEX CE group for some of my Construction Certificate documents (Stormwater, Parking and Erosion/Sediments Plans). They were professional and easy to deal with, had a quick and timely turnaround and was very competitive in the quoting stage. I will definitely recommend Samir and his team for future projects.

I needed to install a detention pit as part of a Stormwater condition of my DA application but Samir proposed two rainwater tanks as a more feasible and cost effective alternative. I found Samir to be extremely reliable, knowledgeable and efficient. He promptly inspected my home, then drew the OSR Plans which were immediately approved by Ryde City Council. I would recommend Samir’s service to anyone.

I found Samir apart from having a professional approach to the building work to be a like able person to deal with Thanks again Samir Martin.

Start with a Strong Foundation

Get expert support with soil testing, site investigations, slope stability, and foundation design. Our geotechnical engineers ensure your project is safe, compliant, and delivered with confidence.