Shares in some of the UK’s biggest buy-to-let lenders such as Paragon and One Savings Bank have fallen after it emerged that the chancellor may make private landlords commit to a one-year rent freeze. In an effort to protect households from rising living costs as a result of the Iran war, Rachel Reeves is considering whether to ban landlords in England from increasing rents for a limited period of time, the Guardian revealed on Monday night. Shares in buy-to-let lenders fell when the London Stock Exchange opened on Tuesday. Stock in OSB Group, one of the UK’s biggest buy-to-let mortgage providers, was down 3.6% at 510p as investors worried the rent freeze would hurt the FTSE 250 company behind the lenders Kent Reliance and Precise Mortgages. Shares in Paragon Banking Group, another large buy-to-let lender, slumped 2.4% to 733p. The FTSE 250 group is largely focused on lending to professional landlords who own more than three properties.…