Foundation Repair &
House Underpinning

From jammed doors to cracked walls, A1 Underpinning specialises in a complete range of repair solutions caused by damaged foundations.

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Excavation &
Construction Of Subfloor Rooms

The A1 Underpinning team specialise in a range of excavation solutions and the insulation of steel beams for residential clients.

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Tight Access &
Difficult Foundation Repairs

A1 Underpinning is available 24 hours a day, 7 days a week to respond to even the most difficult jobs with very tight access.

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Retaining Wall Construction Solutions in Sydney

As well as being Sydney's leading team of foundation repair and underpinning experts, A1 Underpinning also specialises in a complete range of retaining wall construction solutions for every residential and commercial application.

From small retaining walls to create distinctive landscape designs, to major structural retaining wall solutions to protect and strengthen the largest residential and construction projects, you are guaranteed quality workmanship, reliable service and a competitive price.

We've built our name and reputation over the last 20 years by delivering exceptional service combined with the industry expertise required to construct retaining walls that stand the test of time.

When you need the job done right, call A1 Underpinning first. We specialise in designing retaining wall construction solutions that incorporate smart drainage, secure footings and modern approaches to deliver an unparalleled solution.

Call us for a quote on all retaining wall construction solutions today. Contact us or send us an online enquiry.

Retaining Walls for a Range of Needs

From gravity walls to sophisticated cantilevered retaining wall construction solutions, our team is able to tailor a retaining wall to meet all of your needs.

We specialise in retaining wall construction solutions for a range of applications including:

  • Subfloor Rooms and Cellars

  • Cribb Walls

  • Walls for landscape design

  • Pool surrounds

  • Residential reinforcement

  • Commercial construction

  • Civil construction

Call the Retaining Wall Construction Experts Today.

For a residential and commercial construction solution that stands the test of time, you need to start with a strong foundation. As the leading foundation repair and construction company in Sydney, A1 Underpinning is perfectly positioned to deliver exceptional retaining wall construction solutions.

As well as being known throughout the industry for the quality of our foundation repair and house underpinning services, we - Professional commercial & residential construction company also specialise in drainage solutions, jamming door realignment, excavation and the building of sub floor rooms, as well as a range of residential and commercial brickwork and concrete construction solutions.

We proudly serve all residential and commercial clients throughout the greater Sydney metropolitan area. For 24 hour emergency house underpinning, foundation repair and construction services, contact A1 Underpinning as we are available 24 hours a day, 7 days a week.

For a quote on a retaining wall construction solution from the Sydney experts, call A1 Underpinning - Expert house underpinning and foundation repair specialist in Sydney today. Contact us or send us an online enquiry.