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Extension over sewer wayleave

  • 27-02-2022 11:44pm
    Registered Users Posts: 7,817 ✭✭✭

    We're considering getting an extension but there is a sewer running across the middle of the back garden so wondering if we would even get planning? I've attached picture of the sewer line and the wayleave either side. The red X is where we'd like to extend so wouldn't be right on top of the sewer but would be on the wayleave. The black Xs are manhole covers, one on the road and the other in our neighbours garden. Not sure if that makes any difference.

Best Answer

  • Registered Users Posts: 507 ✭✭✭mike_2009

    Ask for a pre planning meeting with your local county council to get a view. They will mandate protection of the sewer during construction at the very least but the foundations might prohibit this construction completely.


  • Registered Users Posts: 7,817 ✭✭✭youcancallmeal

    We're on the fence about whether to even bother trying to extend. I would guess if we did manage to get planning permission based on some specialised foundation it's probably going to be crazy money due to current building costs, engineer requirement and also that we would need to relocate an Air Source Heat Pump fan. Might just investigate building a garden room instead

  • Moderators, Regional North West Moderators Posts: 44,776 Mod ✭✭✭✭muffler

    Extensions have been allowed in the past providing proper protection has been afforded to the sewer and access / maintenance points are provided at either side of the extension.

  • Moderators, Home & Garden Moderators, Science, Health & Environment Moderators Posts: 17,086 Mod ✭✭✭✭DOCARCH

    And....many have been refused too!

    Had experience a couple of years ago where council would simply not budge on the wayleave even though the sewer line was outside my clients site!

  • Registered Users Posts: 4,377 ✭✭✭Treppen

    What if you just go ahead and do it, i.e. don't ask the council?

  • Registered Users Posts: 7,817 ✭✭✭youcancallmeal

    When we bought the house our solicitor sent us an email with sewer plans and the following "please note that should access be necessary for the local authority when the estate is taken in charge, you are obliged to give such access to carry out any necessary maintenance and up keep of the pipes".

    So I guess we would be in legal hot water if the council ever came asking questions. Also we'd have to tell any extension builder about it and I'd imagine they'd probably not want to get involved if there isn't an okay from the council and an engineer

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  • Subscribers Posts: 39,469 ✭✭✭✭sydthebeat

    you run the risk of the extension being demolished leaving you absolutely no come back, at a loss of the money, and possibly having to incur the costs of demolition and extraction off site.