Even when the landlord has a buy-to-let mortgage, the tenancy agreement becomes void.

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Miss Prentice asked him to stop smoking for fear of breaching their tenancy agreement and started to call the police.

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The council said it could not force her to move as there was no time limit on the tenancy agreement.

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At present, council tenants keep their property for life unless they breach their tenancy agreement, for example, by engaging in anti-social behaviour.

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