About us

Every client is different and at Keystone we believe that the first meeting where we canvas individual needs, budgets and expectations is the most important.

Your home is your biggest asset and we understand that that the most cost-effective way to extend your home is to maximise the floor area through building a second storey addition (aka first floor addition). Keystone will make the building process feel effortless, with a completed second storey that is sure to increase your home’s value. Through a disciplined project management approach


  • Begin construction without delay by taking care of plans and permits so your build complies with local laws.
  • Save money by not needing to move out, saving on relocation fees and temporary accommodation.
  • Offer you consistent product quality and competitive prices through our relationship with suppliers
  • Support an open line of communication so you receive regular status reports on the progress of your build.