In article , Pecanfan wrote:
As I said, "I've checked with our solicitor and we shouldn't need
the freeholder's (i.e. the owners of the downstairs flat)
consent.". It's a standard terraced flat agreement whereby the
upper flat owns the freehold to the lower flat and the leasehold
to the upper flat; the lower flat owns the freehold to the upper
flat and the leasehold to the lower flat. This agreement is in
place to simplify maintenance between the two flats etc. It's not
designed to wrap simple building work in red tape.

Well yes, but I would argue that this is not 'simple' in the sense
that it does significantly alter your flat and if done wrongly would
impact on the flat below. When you sell you will be asked whether
you have made alterations and asked whether you obtained any
necessary statutory consents and the freeholder's approval.

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