Dalzell Landscape Co Ltd (Japanese Knotweed NI)
Based in Holywood, County Down · Covers Throughout Northern Ireland Accreditation stated by provider: PCA certificated surveyorOwn website
03 · Existing buildings & works · Condition
Japanese knotweed survey in Northern Ireland
7 providers offering japanese knotweed survey in or across Northern Ireland, including national firms. The rules in Northern Ireland differ from England’s, so see the notes below.
The rules in Northern Ireland
The same legal position and treatment approach applies in Northern Ireland.
7 invasive plant specialists for Northern Ireland
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Based in or covering Northern Ireland (3)
Knotweed Management Company
Based in Coleraine, County Londonderry · Covers Northern Ireland and Republic of Ireland Accreditation stated by provider: PCA qualified surveyorOwn website
MCL Consulting
Based in Belfast · Covers Northern Ireland Accreditation stated by provider: ISO 9001, ISO 14001Own website
National providers (check they cover your area) (4)
Complete Weed Control
Based in Newton Aycliffe, County Durham · Covers Over 50 UK and Ireland offices Accreditation stated by provider: BASIS, NPTC, ISO 9001, ISO 14001Own websiteUK-wide
Invasive Vegetation Management & Treatment Ltd (IVM)
Based in Water Orton, Birmingham · Covers Midlands and nationwide; offices in Sedgley, Cambridge and Witney Accreditation stated by provider: PCA registered contractor, CSJK surveyors, CHAS, Constructionline, TrustMarkOwn websiteUK-wide
Phlorum
Based in Brighton, East Sussex · Covers National team; air quality work focused on southern England Accreditation stated by provider: PCA accredited, ISO 9001, ISO 14001, ISO 45001, Expert Witness Institute member, Trustmark registered, River Restoration Centre memberOwn websiteUK-wide
TP Knotweed Solutions
Based in Banbury, Oxfordshire · Covers Whole of the UK Accreditation stated by provider: PCA Approved, CSJK-certified surveyors, NPTC-certified contractorsOwn websiteUK-wide
Japanese knotweed survey in other regions
London (4) South East (6) East of England (3) South West (4) West Midlands (6) Wales (8)
Getting signed off in Northern Ireland
In Northern Ireland, your district council handles building control. New homes need a full plans application, and the council issues a completion certificate at the end. The technical rules are set out in Technical Booklets rather than Approved Documents.