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House re-levelling is the process of correcting areas of a home that have sunk, shifted or become uneven due to ground movement, weak soil, subsidence or foundation settlement. It may involve lifting and re-supporting affected parts of the building so floors, slabs and foundations are brought back towards level.

Your home may need re-levelling if you notice sloping floors, cracks in walls or brickwork, gaps around skirting boards, jammed doors, sticking windows or uneven concrete slabs. These signs can indicate the foundations or ground beneath the home have moved and should be professionally assessed.

Yes. Uneven floors can be caused by movement beneath the home, especially when they appear with wall cracks, sticking doors, cracked tiles or gaps around frames. In New Zealand, changes in ground conditions, settlement, weak soils or seismic-related movement may all contribute to floors becoming unlevel.

In many cases, yes. Mainmark uses engineered resin injection technologies that can help re-support weak ground, fill voids and raise affected areas through small injection points. This approach is designed to reduce mess, excavation and disruption compared with traditional re-levelling or underpinning methods.

Floor levelling often refers to correcting the surface of a floor, while foundation re-levelling addresses the movement beneath the home that is causing floors to slope, sink or become uneven. If the issue is caused by ground movement or settlement, treating the underlying foundation problem is usually more effective than a surface-only repair.

Resin injection can help re-level sinking floors or foundations where the problem is linked to voids, weak ground or settlement beneath the structure. The expanding resin is injected below the surface to improve ground support and help lift affected areas. A site assessment is required to confirm suitability.

The cost of house re-levelling depends on the size of the affected area, how much the home has moved, ground conditions, access around the property and the repair method required. A site assessment is the best way to understand the cause of movement and receive a tailored recommendation.

Mainmark is a specialist ground engineering company with local New Zealand experience in house re-levelling, resin injection, underpinning and ground improvement. Homeowners choose Mainmark for practical assessments, engineered repair methods, minimal disruption and solutions focused on treating the cause of movement, not just the visible symptoms.