I am 63 years old and no longer contribute to a tax-deferred retirement plan. I am currently not taking a distribution from my retirement accounts. Can I borrow from my SEP accounts or do I have to start taking a taxable distribution to get cash out? I plan on using the money to purchase a new (not first) home with no mortgage.

An SEP (Simplified Employee Pension) plan is a form of IRA, and unlike a 401(k) does NOT have a provision for loans, and any distribution to you is considered taxable income. The good news is that since you are over 59-1/2 you will not have to pay a 10% early withdrawal penalty.