Pursuant to CPL 690.50 (1) a police officer in executing a search warrant must give, or make reasonable effort to give, such person notice of his authority and purpose and show him the warrant or a copy thereof upon request. However, pursuant to CPL 690.50(2) a police officer need not give notice to anyone of his authority and purpose, as prescribed in subdivision one, but may promptly enter the same if:(a) Such premises or vehicle are at the time unoccupied or reasonably believed by the officer to be unoccupied; or (b) The search warrant expressly authorizes entry without notice. A "No Knock Search Warrant" expressly authorizes entry without notice.
George P. Conway
120 West Avenue
Saratoga Springs, NY 12866
A no-knock search warrant allows the police to enter without warning - they can simply kick in the door. A regular warrant requires them to annouce their presence. A no-knock warrant is
legally and constitutionally authorized only when there is reasonable cause to believe that the property to be seized is subject to quick or easy destruction or disposal, or when the giving of notice may endanger the life or safety of the executing officer or another person.
The above is meant for information purposes only and not as legal advise.
The answer to your last question us that once the police enter your home with a search warrant, they will detain everyone inside the home, so you would not be able to get your money out of the house. In fact, they either will handcuff you and anyone else in the home while the search is being conducted, or they will handcuff everyone and remove them from the home while the search is being conducted. The most you would be able to do is get dressed if you are wearing pajamas, and that would be done under supervision.