Credit: Levander Lab/Rice University. A team of scientists led by Rice University has figured out why the Colorado Plateau -- a 130,000-square-mile region that straddles Colorado, Utah, Arizona and New Mexico -- is rising even while parts of its lower crust appear to be falling.
back to estimates list. A ground level house extension in Australia costs around $1,400-1,500 per square metre. When house prices are high, as they are in many parts of Australia at the moment, adding a room or extending your living area on the ground floor can be a more affordable way to create space than moving.
If you plan to buy most of the raw materials and undertake much of the work yourself, Channel 4 estimates that a single storey (20 metre square) extension will cost Â£15,900 (or Â£795 per square metre) whilst a two storey (40 metre square) extension will cost Â£28,040 or (Â£701 per square metre).ouse extension costs vary significantly from project to project. Depending on size, complexity and location, an extension can cost anything from a few thousand pounds to a six figure sum.