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As a highly reputable plumbing & drainage service with years of experience in residential and commercial plumbing throughout Sydney, Downstream Group can assist with all your new build plumbing needs. Downstream Group can add, alter or provide new plumbing & drainage for renovations and new build homes right across Sydney and surrounding suburbs; from Granny Flats to amazing Custom Built Homes to large acreage projects. Over the years Downstream have been apart of some really amazing projects working alongside some of the best builders and trades New South Wales has to offer. Our efficient workmanship and attention to detail is what makes Downstream your go-to destination for new build plumbing services in Sydney.