For best results, cultivate the area to a depth of 10 to 15cm. Eliminate potential drainage problems by installing tiles or perforated pipe underground and have soil levels sloping away from any foundations. Lightly rotary hoe or rake in a lawn fertiliser at recommended rates to a depth of 5 to 10 cm. Rake smooth the soil, removing stones, roots and large clods. Roll the area lightly with a lawn roller. This will firm the soil surface and reveal low areas that may need more soil. Keep soil level 10mm below footpaths and driveways. Prior to installing turf, water the prepared area to settle soil and to provide a moist base for the turf.