I’m considering a single story extension the width of my house at the back, no more than 3m so covered under permitted development. On one side of our garden is the neighbours garage wall (which also party joins our house as we are link-detached). Their garage wall is entirely in their boundary per our deeds so I am not sure if it is a party wall or not, although half of their garage is attached to our house.
My question is when extending can we go right up to their garage wall and effectively lengthen the section of our home which adjoins their garage. Or should we leave a gap between their garage and our extension? If so how large a gap?
Thanks!
Are you a tradesperson and able to answer this question?
You can only build up to your boundary line... if their garage is on the boundary and you want to use their wall as the side of your extension then you must ask their permission and get it in writing ( party wall contract ) if the garage is on their side of the boundary line then you have to build away from it.. still need to inform them of this as when built they can’t get access to their wall for maintenance... hope this helps
Obtain the advice from a building inspector firstly,also check the party wall regulations.
Often it is written into deeds etc that maintenance is needed,so actually building on a boundary can constitute many obtacles.
Any agreement needs to be in writing and ideally legally binding.
Answered23 April 2020
2
Anonymous user
Leave a gap
Only take the gutter line up to the boundary
If you join onto their building and they want to change it in the future you will have problems
You will need a party wall agreement regardless
I would be more concerned about undermining thier foundations when you excavate yours
But in general it is correct to leave at least 100mm between the two buildings for fire protection,letting air flow etc and of course to build it if you’re doing it in masonary you will need a little space to level and point it good luck
Hi. At one time it was the norm to leave a 50mm cavity between adjacent buildings. Recently its been practice to build up to the adjacent wall. This removes damp and ventilation issues.However its always best to seek the opinion of the planner for your area as ultimately they have the deciding vote !
