Unlevel Buildings

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Unlevel Buildings

Do you have an unlevel home or structure and need house underpinning?

What does it mean if you have an unlevel building?

Unlevel buildings can be identified if your house is cracking, you have noticed internal or external cracks in walls, windows and doors are not opening or closing easily, you have identified cracked floors slabs or if you have gaps under skirting boards or around cornices/architraves. 

If your home or building is unlevel, this is often a result of subsidence caused by weak ground, and there is a need to repair foundations. This means the ground below the unlevel part of your property is too weak to sustain the building’s load safely. 

What do you do if your house is sinking?

If you have an unlevel house or building, it is more than likely you need (what is traditionally referred to as) house underpinning. 

Raise and Relevel specialises in a modern form of traditional concrete underpinning called polyurethane resin injection ground improvement and can provide the quickest, safest, cleanest and most effective underpinning.

If your house is sinking and/or have cracks in walls, contact Raise and Relevel to have one of our ground surgeons provide you with polyurethane resin injection underpinning cost advice.  

If your house is sinking, it is important to fix it right away to avoid the risk of further damage and potential safety hazards. 

What is the cause if your house is sinking or unlevel?

There are a multitude of possible causes for weak or unstable ground if your house is sinking or if you have cracking of walls. These include;

  • Variation in moisture content making the ground unstable from either;
    • Excessive water, e.g. flooding or;
    • Sustained dry periods, e.g. drought or;
    • Damage to inground services such as a sewer or stormwater leaking 
  • Weak ground from poorly compacted fill 
  • Inadequate footings during the original building process
  • Erosion from natural (e.g. flood) or unnatural events (e.g. burst water pipe)
  • Tree roots which reduce moisture levels and cause the ground to shrink
  • Vibration and/or nearby excavation causing the ground to weaken
  • Overloading of the structural capacity of the house foundations 
  • Deterioration of retaining wall or slopes causing the ground to collapse     

Raise and Relevel has house underpinning solutions for all the above that will minimise underpinning cost.  

How do you fix an unlevel home or building?

Your house underpinning may involve house foundation repair, footing repairs and house releveling.

When underpinning in Sydney, our ground surgeons are often dealing with sandy soils near the coast, and reactive clays found inland. Raise and Relevel uses specialised materials suitable to these ground conditions when to minimise the underpinning cost.

Brisbane underpinning is commonly required due to weak or unstable ground associated with the river silt soil or reactive clays more commonly inland. R+R again utilises specialised resins and injection methods for these soil types when undertaking Brisbane based underpinning to minimise underpinning cost.

In Melbourne, House underpinning is often associated with weak or unstable alluvial silts from the Yarra River and/or reactive clays more inland. Raise and Relevel ground surgeons have undertaken over 3000 re-leveling projects in Melbourne and are experts in minimising polyurethane resin injection underpinning costs in these ground conditions.

choose us?


We give you better value.


Everyone you deal with is a specialist structural releveller.


We provide a fully guaranteed warranty on workmanship and materials.

Questions you should ask

Your home is everything to you and your family, so before going ahead with any subsidence repairs, we’ve put together a list of questions our customers should ask:

What actual experience in resin injection does the person quoting my job have?

We offer advice, not sales, so we don’t employ salespeople. The person who quotes your job does your job, and has been relevelling homes like yours for over 15 years.

How many homes have you raised and relevelled?

Our specialists have raised over 7,000 homes in total.

What guarantee do I get that the solution is permanent?

If the problem returns, we return. We provide a fully guaranteed warranty on materials and workmanship.

How do I know I’m getting the best value?

At R+R, we have no call centres, no sales people and minimal overheads, all of which enables us to provide the best value for our customers.

Why should I choose you?

R+R will deliver you better value, through real experience, with guaranteed results.