Under House Excavation Services Gold Coast

Under House Excavation

With over 30 years of experience in creating new space under existing homes, Micro Excavations is the name Queensland’s leading builders trust. From heritage cottages and residential homes to commercial shopping centres, we specialise in the precision earthworks required for major under-house renovations.



Opening up the area beneath your home creates a wealth of opportunities, including:

  • Increased Property Value: Adding a second storey or basement level.
  • Functional Space: Extra car garaging, a home-based business office, or a teenage retreat.
  • Rental Returns: Creating self-contained accommodation for extra income.
  • Storage: Clearing out the clutter with a dedicated, secure storage area.

Three Critical Factors for Under House Excavation

Excavating beneath an existing structure is a complex task that requires careful planning and expertise. Here is what you need to consider:

01   Consult a Licensed Builder & Engineer

Don’t let the excitement of a new space cloud your judgment. Excavating under a home can affect structural integrity.

  • Foundations First: Before the first bucket of dirt is moved, a builder or structural engineer must assess your existing foundations.
  • Structural Support: Temporary or permanent house supports (propping) may be required to ensure the building remains stable during and after the dig.

02   Comprehensive Waterproofing

In our humid Queensland climate, moisture management is essential for any subterranean space.

  • Double Protection: Any walls where soil remains built up against the outside must be waterproofed both inside and out.
  • Drainage Systems: We can assist in excavating for AG-lines (agricultural drainage) and French drains to ensure water is diverted away from your new living space.

03   Access & Efficiency

The golden rule of under-house work is that the more room we have to navigate, the faster we can complete the job.

  • Entry Points: While we specialise in tight access, clearing the largest possible entry point allows us to use more efficient machinery.
  • Spoil Removal: We plan the most efficient route to transport excavated dirt from under the house to the tip trucks, saving you significant time and labour costs.

Start Your Under House Project Today

If you’re ready to unlock the hidden potential beneath your home, trust the experts with three decades of Gold Coast experience.


📞 Call (07) 5593 8601 or use our online enquiry form to book a free onsite consultation.