The seller said 'No' within the Property Information Form reasonably believing the property had never been affected by Japanese Knotweed. The previous owner is now liable for damages and costs. 

Should he have stated 'Not Known' and forced the purchaser to make further enquiries or obtain professional reports, then he would not have been in the position he is in now. 

At what point will a property owner become responsible to know every inch of the land?

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