Every successful basement begins with a well-designed and expertly constructed retention system. At Aldig, we deliver reliable basement retention solutions that provide the stable foundation for safe, efficient and successful construction. From piling, capping beams, bulk excavation and shotcrete walls to complete retention systems, we work with homeowners, builders, developers and consultants to ensure every project is built on solid ground.
Basement excavations place significant pressure on surrounding soil, neighbouring structures and property boundaries. That’s why we take a proactive approach; helping identify the most suitable retention solution early in the project to minimise risk, improve constructability and avoid costly delays.
Our focus is on controlling ground movement, maintaining excavation stability and preparing the site for the next stage of construction. This is particularly important for Melbourne projects with restricted access, sloping sites, neighbouring buildings or challenging ground conditions, where careful planning and specialist expertise make all the difference.
Whether you require a design-and-construct solution or construction to an
existing engineer’s design, Aldig provides the experience, technical capability and practical knowledge to deliver quality basement retention systems with confidence.
A basement retention package brings together the key works needed to support the site before and during excavation. Aldig plans and delivers retention systems based on access, excavation depth, boundaries, ground conditions and the surrounding structures that need to be protected.
Whether your project requires piling, capping beams, bulk excavation, shotcrete walls or a combination of these works, we help create a practical retention solution suited to the site.
Effective basement construction begins with a well-planned retention strategy. At Aldig, we provide practical retention system design solutions that consider site conditions, excavation requirements, neighbouring structures and the overall construction methodology to develop safe and efficient outcomes.
Our experienced team works closely with homeowners, builders, engineers and consultants to assess project requirements and recommend retention systems suited to each site. By considering factors such as ground conditions, access limitations, excavation depth and surrounding constraints, we help identify solutions that minimise risk and improve constructability.
From initial concept discussions through to detailed construction planning, Aldig’s approach focuses on creating retention designs that are practical, buildable and aligned with the requirements of the project. Whether supporting a complete design-and construct package or working alongside your chosen consultants, we provide the expertise needed to deliver stable.
Retention piling provides essential ground support by stabilising surrounding soil before and during basement excavation. At Aldig, we deliver a range of piling solutions tailored to the specific requirements of each project, including bored piers, CFA piling, contiguous piling, secant piling and tight access systems.
These retention systems are designed to control ground movement, maintain excavation stability and protect surrounding structures, making them ideal for basement projects located near property boundaries, existing homes, neighbouring buildings and other sensitive environments.
By combining specialist piling expertise with practical construction knowledge, Aldig develops and constructs retention solutions that provide a safe and stable excavation platform for the next stages of basement construction. Whether delivered as part of a complete design-and-construct package or constructed to engineer-supplied documentation, our team provides reliable solutions suited to Melbourne’s diverse ground conditions and complex building environments.
Retention capping beams play a vital role in tying retention piles together, creating a strong and stable system that supports the excavation throughout construction. At Aldig, we construct reinforced concrete capping beams designed to distribute structural loads, improve structural integrity, increase stability and provide an integrated structure for the next stages of basement construction.
With a focus on quality workmanship and precision, Aldig constructs capping beams that are accurately set out, built to specification, and seamlessly integrated with the overall retention system, providing a safe, reliable and efficient foundation for basement construction.
Retention shotcrete walls provide an effective solution for stabilising exposed excavations, forming durable basement perimeter walls and completing the retention system in preparation for the next stages of basement construction.
At Aldig, we specialise in constructing quality reinforced shotcrete walls tailored to the unique requirements of each project, combining structural performance with architectural considerations to achieve a solution that is strong, stable and visually refined.
As certified and insured Cetco waterproofing membrane installers, we can also provide integrated waterproofing solutions, giving clients confidence that their basement structure is protected from the ground up.
Through experienced construction methods and a detailed understanding of basement structures, Aldig delivers shotcrete walls that provide long-term durability, reliable performance and a high-quality finished appearance.
Aldig delivers complete basement retention packages as a single, coordinated scope, reducing trade interfaces, improving construction sequencing and providing builders with a clear pathway into the next stages of construction.
Each package is tailored to the unique requirements of the project, considering site conditions, access constraints, design complexities, challenging ground conditions, excavation depths and the structural support required to deliver a safe and effective retention solution.
By integrating retention planning with excavation requirements from the outset, Aldig helps homeowners, builders and consultants achieve greater pricing clarity, improved coordination and confidence that their project is supported by a practical, buildable solution delivered by an experienced team committed to quality outcomes.
20+ years of specialist experience delivering complex construction and basement projects, Aldig provides practical construction advice during the planning stage to help identify risks, improve buildability and develop solutions that work in the real world.
Extensive experience working with Melbourne and Victorian sites where access, neighbouring structures, sloping blocks or restricted working areas need careful planning. Our specialised equipment navigate tight access conditions, including confined areas, doorways and garages, allowing us to deliver basement and foundation solutions where traditional construction methods may not be suitable.
Aldig’s skilled team carefully plans equipment access, spoil removal, site logistics and the sequence of works to ensure retention construction is delivered efficiently and integrates seamlessly with the overall project programme. Our practical approach helps minimise delays, reduce site constraints and create a smoother transition through each stage of basement construction.
Aldig provides clearly defined retention packages, giving builders and consultants visibility of inclusions, sequencing and site requirements before construction begins.
Through early feasibility assessments and practical design-and-construct solutions, we help identify efficient construction methods, reduce risk and provide greater cost certainty throughout the project.
A proactive approach to retention planning that considers site conditions, excavation requirements and construction sequencing to deliver safe and stable solutions. By controlling ground movement and providing the required structural support, Aldig helps create a secure foundation for the next stages of basement construction.
We begin by reviewing your drawings, geotechnical information and project requirements to develop a clear understanding of the site conditions and construction objectives. This includes assessing retention requirements, pile and socket depths, excavation depths, site access, boundary conditions and any project complexities that may influence the construction methodology. At this stage, we work with the client to determine the most suitable delivery approach; whether Aldig assists with the design development of the retention system, the whole basement or proceeds with construction based on client-supplied engineering documentation.
Every site presents unique challenges. We assess access limitations, neighbouring structures, ground conditions, excavation requirements and site constraints to determine the most suitable retention approach for a safe and efficient construction process.
Working closely with the client, Aldig develops a clearly defined scope of works that outlines the required retention solution, project inclusions and construction requirements. This ensures all key elements are considered upfront, including retention piling, capping beam, bulk excavation, shotcrete walls and any associated works required for successful delivery. By establishing a detailed and accurate scope, we provide greater clarity around project expectations and develop a fixed-price proposal based on the agreed requirements. Our approach combines practical construction knowledge with careful planning to deliver a retention solution that is buildable, transparent and aligned with the client’s objectives.
We coordinate machinery access, spoil removal, site entry and staging so the ground support works can be delivered efficiently and with fewer site disruptions.
Aldig delivers retention works as a single, coordinated package, ensuring each stage is carefully planned and seamlessly integrated with the overall construction program. By managing critical construction interfaces and coordinating retention activities under one experienced team, we improve efficiency, reduce project risk and prepare the site for the next stage of basement construction.
With the retention system complete, the site is stabilised, supported and ready for the next stage of construction. Whether you choose Aldig to continue delivering your complete basement or structural concrete package, or conclude our scope at the retention stage, you can move forward with confidence knowing your project is built on a professionally delivered retention solution.
Aldig delivers reliable piling and foundation systems for high-end homes and multi-unit builds. We design and install cost-effective residential piles and foundations that meet Australian Standards and builder timelines.
Aldig specialises in delivering high-quality piling, foundations and underpinning for residential renovations across Melbourne. Whether you're extending, adding a basement, or strengthening an existing structure, our team provides safe, reliable solutions tailored to your site conditions.
Aldig provide high-capacity piling and foundation solutions for childcares, car parks, medical centres, retail, and mixed-use developments. Our systems handle complex loads and tight urban sites with precision, safety, and efficiency.
With years of proven results in Melbourne’s basement and concrete structure construction, Aldig brings expertise, quality and reliability to every project.
Backed by experience, Aldig uses proven data and costing models to ensure your project is accurately costed—minimising the risk of costly blowouts.
Our team specialises in overcoming challenging sites, tight access, and complex builds—using our own specialised equipment and in-house experience to deliver quality results.
Aldig is an accredited and fully insured waterproofing contractor, committed to quality and compliance.
Feedback from our clients highlights the care, coordination and technical skill behind Aldig’s basement and structural concrete projects. These testimonials reflect real experiences from homeowners, builders and developers who have trusted Aldig with complex excavation support and retention works across Melbourne and Victoria. Their words speak to our commitment to practical problem-solving, clear communication, safe site preparation, and reliable delivery from planning through to site works.
Posted on Google Lachlan MacleodTrustindex verifies that the original source of the review is Google. Great offsite and onsite. Quality focussed and clearly experienced team. We love working with ALDIG on basement projects and complex structures
Owner's reply
Thanks so much for the kind words Lachlan! We really appreciate your feedback and the opportunity to work together on these projects. Our team takes a lot of pride in delivering quality outcomes both on and off site, especially on complex basement structures. We’ve really enjoyed collaborating with you and the team as well and look forward to many more projects together!Posted on Google Tim PattersonTrustindex verifies that the original source of the review is Google. We engaged Aldig for a major residential project in Brighton during 2025/26, and their performance was outstanding. They handled all basement and ground floor slab works efficiently and professionally. Their team demonstrated exceptional engineering expertise and was a pleasure to work with, making the entire process smooth and hassle-free. I highly recommend Aldig to other builders seeking reliable and knowledgeable partners for similar projects..
Owner's reply
Thank you for the kind words Tim. We loved working with you and your team and look forward to our collaborations in the future!Posted on Google HARSH KOUSHALTrustindex verifies that the original source of the review is Google. Mark has great knowledge and experience and I have a good experience to work with one of the Victoria leading companies. Deliver project on time always.Posted on Google George PassasTrustindex verifies that the original source of the review is Google. One of the best basement contractors in Melbourne. Great service, site team is very professional and quality of workmanship is industry leading. We have completed multiple projects with Aldig and looking forward to getting them on the next one. Highly recommended contractor.
Owner's reply
Thank you for the review George. We really enjoy working you and your team. We look forward to our future endeavors together.Posted on Google Stuart InnesTrustindex verifies that the original source of the review is Google. Competitive Pricing and Good communication. Used them for excavating, Piling and shotcreting a site in Hawthorn. Quick and kept site clean and tidy. Would definitely use again.Posted on Google John WayneTrustindex verifies that the original source of the review is Google. From calling the sales guy to getting my job complete. I found this company to have very friendly staff that where good to all my neighbors while getting my job completed on time and ahead of schedule. My wife is very happy with there work ethics and took the time to explain what they where doing even when they didn't know who she was. Special thanks to Seppie & Dan great jobPosted on Google Daniel KingTrustindex verifies that the original source of the review is Google. Timely and efficient company that see to completing there job on time. Staff are very polite and friendly
If basement retention is not planned properly, the excavation can become unsafe and unstable. Poor planning may lead to soil movement, wall collapse, damage to neighbouring structures, water ingress, site delays and higher construction costs.
Basement retention is designed to support the surrounding ground before and during excavation. Without the right engineering, sequencing and site preparation, pressure from soil, nearby buildings, groundwater or site loads can create serious risks. A properly planned basement retention package helps protect workers, neighbouring properties and the overall build, while reducing the chance of costly redesigns, emergency works or compliance issues.
Contact Aldig with your project location, available plans, excavation requirements, and site conditions. Our team will review your needs, confirm the likely scope of retention, and deliver a basement retention package specifically designed for your project needs.
Partner with Aldig’s team to develop a basement retention solution tailored to your project. Whether you require design and construction or construct only services, we work closely with homeowners, builders, developers and consultants to deliver practical retention systems that improve site stability, reduce construction risk and prepare your project for successful basement construction.
From initial planning and retention piling, capping beams, bulk excavation through to shotcrete walls and coordinated package delivery, Aldig provides the expertise and experience to deliver safe, efficient and reliable basement retention solutions for every site.
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