我仔细看过了你的邮件，你的确写了"we are sure sign the next 12 months agreement"，然后你们开始讨论房租，对方中介也同意了，然后你室友改变主意了想要不租，这个的确对你们不利，你只能好好跟对方谈，看看能不能找到人顶替你们，而且承担对方找房客的广告费，否则你这个样子脱身很难。。作者: 御将通佑 时间: 2016-5-11 13:47:39
https://tenancy.govt.nz/starting-a-tenancy/tenancy-agreements/
Every tenancy agreement must be in writing, and the landlord must give the tenant a copy before the tenancy begins. However, the Residential Tenancies Act applies even if a tenancy agreement isn’t in writing. This means a landlord and a tenant can’t avoid their obligations under the law by refusing to put their agreement in writing.