At age 16 can you leave your house without parents consent as long as you are back before curfew?

No, parents have full responsibility of you until you are 18 regardless of curfew. If you leave your house without a parents consent they can call the police to come get you. The only way you can leave the house without your parents consent is if you were to get emancipated, which in simple terms is the same thing as if you were to turn eighteen.