There is no “time for reflection” for housing permits. In some States, a cooling-off period is required for some treaties, which gives signatories a period generally of one to three days during which they can cancel the treaty if they change their minds. Unless such a condition is expressly mentioned in the rental agreement or there is a rare law requiring a cooling period, your lease is mandatory the second you sign your name. The landlord has the right to decide whether he agrees by mutual agreement to terminate the lease or to respect you. This is one of the reasons why most agents tend to insist that tenants come to the office to discuss and sign all contracts and legal documents – although rental agreements are decidedly not subject to reflection periods, it is only wrong on the side of caution. In the Common Law, there is no right to a cooling-off period for anything. Where people have that right, it was given specifically by an act of Parliament. As Kellman says, I am not aware of a cooling-off period after signing a lease. If you sign a lease, you have signed a binding contract. Unless the lessor has not signed a document in which he agrees to terminate the lease, the lease remains in force.
Most leases expressly state that the lease agreement must not be amended orally and that any amendment must be made in writing for it to be valid. Unless the landlord has actually misrepresented whether your mother is signing the lease, or there is a hidden gap in the property, it will be difficult for your mother to break the lease. Your mother probably had the opportunity to inspect the property before the lease was signed, and if there were no problems at the time, it would seem suspicious if there are any problems now, especially since she has not moved into the property. I would suggest negotiating with the landlord a termination of the lease rather than unilaterally declaring the lease cancelled. You may not have a binding agreement if you have discussed entering into a lease but have not taken other steps to enter into a contract. Perhaps you could explain the legal facts described above and then offer a compromise – they can leave once you find a new tenant ready to move in. They just have to pay you for the time they live there. This would avoid empty spaces for you, and the tenant isn`t tied to a house they don`t want – perhaps a win-win situation. These include rental contracts signed personally, by mail or online. .