OpenRent Referral Code & Recommendation page. Welcome! Enjoy and share OpenRent referral links on this page. Share all your referrals in your own free page. Fan of OpenRent? Make sure you give a thumbs-up recommendation. Follow and influence friends & others. From founding in 2012 to becoming the UK’s biggest letting agent in 2015, OpenRent has always had one mission: to make renting fairer, safer, and cheaper for everyone.