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Dangerous building or structure: report it

  • Planning, conservation and building control

Report Mon to Fri, 9am to 5pm

To report a dangerous building or structure, please telephone 020 8359 4500 Monday to Friday 9am to 5pm.

Report out-of-hours

Outside of those times you should call our contact centre on 020 8359 2000 or the Police on 999, if there’s a serious and immediate threat.

Have the following information with you

  • What the danger is
  • Exact location of the danger
  • How long has the danger been there
  • If it poses an immediate danger to public safety
  • If you know who the owner is, with their contact details
  • Your contact details in case we need further information


  • Building Control
  • Barnet House, 1255 High Road, Whetstone, London N20 0EJ
  • Tel: 020 8359 4500
  • Email: building.control@barnet.gov.uk

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