Behind every secured loan sits a balance between the lender's security and the borrower's protection, and the rules here police both sides of it. The chapter begins with how legal and equitable mortgages are created, then turns to the equity of redemption and the doctrines that strike down clogs, oppressive postponements and unfair collateral advantages. From there it works through priority between competing charges, overreaching and actual occupation, before examining home rights and the undue influence rules that fix a lender with constructive notice unless the proper steps are taken. It closes with what happens on default — possession, receivership, the power of sale and foreclosure — and what the borrower must do to redeem and discharge the mortgage.