The beneficiary receives policy proceeds upon the insured person's death. The owner designates the beneficiary, but the beneficiary is not a party to the policy. The owner can change the beneficiary unless the policy has an irrevocable beneficiary designation. If a policy has an irrevocable beneficiary, any beneficiary changes, policy assignments, or cash value borrowing would require the agreement of the original beneficiary.
There are also a few different ways your claim will be settled depending on your policy. Actual Cash Value will reimburse you for the replacement cost minus any depreciation. Because the cost can vary so much over time when it comes to property, this kind of policy could mean the limit on your coverage ends up coming in significantly below the cost to repair or even rebuild your home.