Don't you have a buyer's agent? Why aren't you asking them what to do? Are you in a "dual agent" situation/? Pity if that's the case. The question is so vague, we agents aren't supposed to give legal advice and you're asking us to interpret a contract we haven't read, give you an answer that you'd rely on based on contract terms we aren't privy to . . . okay then.
Eagan, the correct answer any agent should give you on this forum to your question is - "I don't know. I am not able to offer a legal opinion on your situation. This is something you should discuss with your own agent and/or your attorney."
This is a question for your "buyer agent" and part of their duties to you. Since we do not have the California Purchase /Agreement contract we cannot know what the terms are that you agreed to and signed
. Please refer to your agent. If you do not have an agent.....get a lawyer now!
In CA, contingency removal is not passive. Meaning, they have to be removed in writing and the Contingency Removal (C.A.R Form CR) has to be signed by both buyer(s) and seller(s). If the sellers did not extend the contingency periods in writing and the contingencies haven't been removed in writing, the contingencies are basically still in effect. If you have not removed the contingencies, the seller can send you a Notice To Buyer To Perform (to remove the contingencies in writing) and if you don't by the deadline on the Notice To Buyer To Perform, the seller can cancel contract.
Without reading your contract, all I can do is tell you it means what it says. Unless both parties agree to change an aspect of the contract, the terms of the contract are in force.
If you requested extra time to resolve some issues, what did you offer the seller to want to grant you the time? If you allowed it to expire without a threat of rescission, what would cause a seller to extend?
Now, just because the time expired and your good faith deposit is at risk, you can still pursue your options of completing the sale, requesting some adjustments although you don't have any leverage apparently or walk away and possibly lose the deposit.
Your agent is the person you need to discuss this with. They are supposed to look out for your interests and keep you informed of your deadlines, options and strategies.
I hope things go well for you.