This is a not-very hypothetical question from an academic rather than 
practical view.

If a landlord advertises a property, and the tenant accepts the tenancy 
on the basis of that advert (without inspecting first), does the tenant 
have any comeback if the property is not as advertised but they don't 
incur any real costs.

The example in question is a house advertised as detached but which 
turned out to be semi-detached. The tenant is then stuck with a fixed 
term lease for something that they didn't really want.

a@b.invalid wrote:
> This is a not-very hypothetical question from an academic rather than 
> practical view.
> If a landlord advertises a property, and the tenant accepts the tenancy 
> on the basis of that advert (without inspecting first), does the tenant 
> have any comeback if the property is not as advertised but they don't 
> incur any real costs.
> The example in question is a house advertised as detached but which 
> turned out to be semi-detached. The tenant is then stuck with a fixed 
> term lease for something that they didn't really want.

IANAL. I would suggest the contract is void because there is substantial 
error.

Owain