Lenders who see a lot of credit report checks also view this as a potential risk of fraudulent behaviour, and will move (by not extending credit) to protect themselves against it. (pinskymortgages.ca)
Unless you finalize your loan application with a lender and encourage full credit report check, your shopping for rates won't cause decrease of your credit score. (effectify.com)
This is a bad idea as you may harm your credit score even more with all of these programs suddenly popping up with associated credit report checks. (lizloans.com)