According to California regulations, when a contractor discovers unforeseen conditions that will increase project costs beyond the original contract amount, what is the maximum percentage increase allowed without additional written authorization from the owner for home improvement contracts?
Correct Answer
A) No increase is allowed without written authorization
Under California B&P Code Section 7159, any change in the scope of work or increase in contract price requires written authorization from the homeowner before the work is performed. There is no automatic percentage allowance for cost overruns, protecting consumers from unauthorized charges.
Why This Is the Correct Answer
Under California B&P Code Section 7159, any change in scope or cost increase on a home improvement contract requires written authorization from the homeowner before work begins. There is zero tolerance for unauthorized cost overruns — no automatic percentage allowance exists. This absolute consumer protection rule means the contractor must stop, document the unforeseen condition, write a change order, and obtain the owner's signature before proceeding.
Why the Other Options Are Wrong
Option B: 5% of the original contract price
There is no 5% automatic allowance under California law. B&P Code 7159 does not carve out any percentage threshold for home improvement contracts — all increases, even small ones, require prior written authorization.
Option C: 15% of the original contract price
There is no 15% automatic allowance under California law. This figure has no basis in B&P Code 7159. Some federal or commercial contract frameworks may allow contingency percentages, but California home improvement law does not.
Option D: 10% of the original contract price
There is no 10% automatic allowance under California law. Exam takers sometimes recall that change orders over 10% of a commercial contract trigger additional review, but home improvement contracts under B&P Code 7159 have a zero-tolerance rule — any unauthorized increase is prohibited.
Memory Technique
Think: 'Home improvement = ZERO tolerance.' The number to remember is 0%. Any percentage choice (5%, 10%, 15%) is automatically wrong. Visualize a homeowner holding up a STOP sign until they see a written change order.
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