I have just got back from a long weekend away to find that my
neighbour has installed a cooker hood flue (at eye level) and a boiler
flue (at first floor level) through the external wall of his house
that bounds my property.
There is also a 15mm open ended copper pipe and two 110mm dia. holes
also at first floor level.
The hood flue sticks out by about 20mm, the boiler flue by about 300mm
and the 15mm copper pipe by about 50mm, the two 110mm dia. holes are
flush but it looks like they have (grey) soil pipe fittings and are
waiting to have an external stack fitted.
The offending wall is about 1m from the wall of my house and the
boundary fence on that side (from the bottom of the garden to his
house is my responsibility, I don't know if this matters).

OK, i`m not a gas fitter or lawyer, so no doubt a more knowledgeable
answer will follow shortly, but...

If its a fanned flue then there might be an issue with the installer -
most want a horizontal spacing of over a 1m I think - I think mine (a
non-condensing) wants about 1.5m minimum

I thought condensate drains had (*HAD*) to be plumbed in to a soil stack
or similar. If he is putting in provisions for a soil stack, it sounds
like he`s going to have to dig up that passageway to get it into the
sewer at some stage !

I`d say the first step would be to check your deeds urgently to figure
out whether the passageway is a shared access (whether currently used as
one or not), and who the land belongs to. If its a shared access it may
be a joint responsibility rather than your land.

I am also concerned about the odours from the cooker hood flue.

I probably would be too if it was over my boundary - irrespective of any
smells - as it might incur a right of access for maintenance purposes in
future (which he probably has anyway for repointing the brickwork etc)

Does anyone know what the regulations are concerning these issues as I
would like to know where I stand before I confront him.

Perhaps posting to uk.legal or uk.legal.moderated might be in order too

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