If Japanese knotweed is present at the property, the valuer must confirm what category/stage the knotweed is at and the following rules must be applied; 

• Category A and B –  The property may be considered as acceptable for mortgage purposes, subject to an inspection by a suitably qualified remediation specialist and commitment shown to the start of any recommended works under an insurance backed Japanese knotweed Management Plan.
• Category C and D –  Acceptable to lend.

If the valuer identifies a heavy stand of Japanese knotweed on neighbouring land (e.g. very close to the boundary) that may present a threat, the subject property should be declined.