The Contractors State License Board (CSLB) want California consumers who are considering hiring a painter, landscaper, or any other type of construction contractor to know that it is illegal to require or accept a down payment of more than 10% of the total home improvement contract price or $1,000, whichever is less. Never pay for work prior to it's completion or pay for materials before they are delivered to your property. For more helpful tips on hiring contractors please visit the CSLB website at cslb.calgov.