Legal Question in Construction Law in California

Re: Pool Contract

No, you aren't entitled to a discount unless the contract expressly so provides. That would be unusual in a residential-type contract.

You might be entitled to damages, however. That's a different matter. In order to be awarded damages, you would have to sue for breach of contract, then prove you suffered a particular financial loss. Mere inconvenience might not be enough, and if the delay were pretty minor, you might have a hard time even establishing a breach (unless the contract has a "time is of the essence" clause, which also is unusual in a residential contract).

Your best bet might be to negotiate for a price reduction, based upon a threat to sue if one isn't granted. Some contractors would be willing to acknowledge fault and make small concessions. However, unless you have a very strong case for damages, you may be better off just accepting the time over-run. Your experience is better than that of many.