When moved in 2013, I applied for a home equity from 3 banks. My score dropped to 760 from the requests, The other item that lowers your score is a high balance on your Credit cards. I find it helps to send in money after the purchase to keep the outstanding balance low. I do that when every I buy anything over a set amount.
You can block your credit which requires releasing it before any credit check. I have a number of PM clients and futures clients that needed to do that to open an account. Both require a credit check. Those types of checks do not normally change your credit because there is no loan associated with it.When I signed up for cable, the punks ran a credit check without my authorization. I told them I would sue them (someone had recently won a $40K judgement, I referenced it in my emails) and like magic, it was removed.
I absolutely do not want this kind of system to be MORE prevalent. All it does is create nice little robots which are beneficial for the government and not society as a whole.
You can block your credit which requires releasing it before any credit check. I have a number of PM clients and futures clients that needed to do that to open an account. Both require a credit check. Those types of checks do not normally change your credit because there is no loan associated with it.