Brake hoses possibly damaged inside, see if you can push the calipers back with a pry bar, the should move freely, if they don't open the bleeder screws and push and see if they go back, if they do then it's possible u have bad brake hoses
bad brake hose
you may have a flex hose that is collapsed and not letting your brake fluid back to the master cylinder
New house too
check the return line for the BRAKE master cylinder must be clogged line . if not check the ABS AND BLEED THE LINE
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