Retaining wall, excavation and drainage work carried out by Retain by Theo in the Illawarra

Our Services

Retaining Walls

Illawarra ground moves, so every wall we build starts with a site assessment. From there our retaining walls move through engineering, certification and council approval before the first sleeper is set.

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Concrete Sleeper Retaining Walls

Charcoal, sandstone, stacked stone or timber grain: concrete sleeper walls suit almost any home. We set galvanised posts into engineered footings so the finish you pick stays true for decades.

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Timber Retaining Walls

Established gardens and older Illawarra homes suit something warmer than concrete. Timber retaining walls give that softer look, and we detail ours with drainage membranes and structural fixings so they last.

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Besser Block Retaining Walls

The highest load capacity system we build is masonry. Besser block walls lock footing, steel and grout into one monolithic element, then finish as face blockwork, bagged, rendered or stone clad.

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Excavation & Earthworks

Levels, falls and access are decided at the dig, not afterwards. Our site preparation and bulk excavation service brings the right machine for your block, plus sediment control and tidy spoil handling.

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Landscaping

We shape ground, set levels and bring in quality soils, pebbles and plant ready beds, then finish with pathways and stepping stones that make the yard usable in every season.

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Deck Builder

We size footings and framing for the actual span and load, then finish in the board and colour that suits your outlook, your budget and the upkeep you want.

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Excavated site prepared by Retain by Theo before a new retaining wall build

Site Ready, Start to Finish

Every project begins with the ground beneath it. At Retain by Theo, our engineered retaining walls suit sloping blocks, tight boundaries and awkward driveways right across the Illawarra. Choose durable concrete sleeper retaining walls, warm timber retaining walls for garden terracing, or structural besser block retaining walls when the load is serious.

We also take on excavation and earthworks and landscaping as standalone jobs. Site cuts, spoil removal and subsurface drainage are handled by the same crew, so you are not chasing three trades for one result.

Want a straight answer on your own site? Call us on 0417 661 224 for a free quote with no obligation.

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Besser block retaining wall built by Retain by Theo alongside an excavated Wollongong site