What if a contracts final bill exceeds an estimate in ca?

In California, if a contractor's final bill exceeds the initial estimate, they must provide a detailed explanation of the additional costs. The contractor is generally required to obtain the homeowner's approval for any changes that lead to increased charges, especially if the increase is significant. Homeowners have the right to dispute charges that were not agreed upon in advance. It's advisable for homeowners to review their contract and discuss any discrepancies with the contractor promptly.