What to ask, what lenders look for and how to keep a sale moving.
A valuation or survey that mentions knotweed need not finish a sale. It does mean the paperwork should be sorted well before exchange.
Ask the seller for the management plan, treatment records and any guarantee, and confirm the guarantee can pass to you.
A survey sets out how big the stand is. A treatment programme can then be arranged so the lender has the evidence it needs.