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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Commercial Foundation Laying and Construction Services In Sydney

At A1 Underpinning, our services don’t stop with just leading foundation repair and underpinning solutions. In addition, we also specialise in foundation laying, commercial excavation and extensions for a range of commercial applications.

Whether your business needs additional rooms underfloor including cellars, workrooms or storage areas, or you are looking to expand an existing factory or work floor, you’ll find that our solutions are second to none.

Unlike a traditional construction company, we start with designing and creating foundation plans that take into consideration the needs of your business, the lay of the land and the nature of the building to ensure a rock solid result.

We have over 18 years of experience working with Sydney businesses to create unique foundation laying and commercial construction solutions and have built our name based on quality, value and reliable service.

Call Professional commercial construction company today for a quote on all new commercial construction projects. Contact us or send us an online enquiry.



A Foundation for Every Commercial Project

We work with innovative methods and modern techniques to create underground and above-ground room solutions for a wide range of commercial construction applications, including:

  • Cellars

  • Workrooms

  • Storage facilities

  • Cool rooms

  • Factory floors

  • Garages

  • Barns and silos

  • Custom and specialised equipment rooms

We also specialise in retaining wall construction. Learn more here.

Call Us For All of Your Commercial Construction and Foundation Needs

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

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