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Extensions

question about next door's new extension footing butting up against my extension wall.footings

Anonymous user 28/02/2024 - 4.07 PM

Hi, not astraightforward question so please bare with me. Right workmen have just started work on next door's new double extension. The concern i have is we live on a faiirly steep hill and due to next door being uphill of me his house floor, inc backyard, over which the extension will be built, is approx 2 foot higher than my house floor and backyard. So, his foundations will be well above my extension damp course. Can someone kindly tell me what should be done by next door's builder to prevent rising damp in my extension....some sort of polythene membrane between his footings,foundations and my extension wall? I already have rising damp issues on this extension wall due to poor drainage next dooor so am hoping the new extension over his backyard, which is pretty crappy, will cure the damp I already have. That said, as his new extension will be butting up against mine I need to make sure the damp risk is kept as low as possible because once his extension is up then any damp issues will be both difficult and costly to cure. I hope my question is not too difficult to decipher and will appreciate any answers. With thanks Tony.

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4 Answers

Anonymous user

All extensions etc even if within permitted development size have to be built to current regulations , a damp proof membrane should be inserted to prevent any damp issues . If in doubt contact building control at your local council and a building surveyor/inspector will be happy to come and check it out for you Hope the above helps

Answered5 June 2023

Jengis Fahri

Rating: 4.9 out of 5

Potters Bar

If you have lost faith in their ability to complete the works to the standard you expect, then maybe its best to end the relationship amicably and agree on the balance owed for what works has been completed.

Answered22 May 2023

D I Bridge Carpentry

Rating: 5 out of 5

Par

If the building work is within 3 metres is your property they must apply for a party wall agreement

Answered12 June 2023

Result Design and Build

Rating: 5 out of 5

Peterborough

I feel the same as the first commenter but also the cavity between your inside wall and outer wall should stop any damp bridging to your extension. I’d definitely have a nice word with the builders and see what their intentions are before you call in the building inspector. Don’t get off on wrong foot

Answered13 June 2023