DEAP report to demonstrate Part L compliance Extension

cormac123 · 31-10-2022 09:22AM #1

I’m building a side extension in Co Donegal. Planning was approved last year and I submitted an opt out commencement notice last week. They came back asking for ‘ DEAP report to demonstrate Part L compliance ‘

Im assuming this is just a BER for the extension to ensure it meets Part L? Looking back on planning application I don’t see this report having been submitted. Wasn’t sure if extensions ended to meet part L, the existing house is 80+ years old.

Thanks in advance

Biker1 · 31-10-2022 12:44PM

Part L compliance reports are only for new builds and not for extension onto existing houses. What I usually do in these cases is draft a letter to the council explaining this and that the building fabric will be built to meet at least the backstop u-values in Part L.

Failing this get a BER assessor to do an assessment on the entire house including proposed extension and send the dwelling report from DEAP to the council along with the above letter.

cormac123 · 31-10-2022 01:35PM

Thanks for this advice, really appreciate it

Gumbo · 31-10-2022 02:58PM

OP, do you fall under the new Part L regs whereby you are carrying out works above the 25% rule?

Therefore the whole house needs evaluation and cost beneficial upgrading.

DEAP report to demonstrate Part L compliance Extension

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