In Crosby, knotweed questions usually come up around a house sale: a surveyor flags a suspicious plant, or a seller has to tick a box on the TA6 form. The answer is a proper survey and a written management plan, which gives buyers, sellers and lenders something concrete to work from. We carry out surveys across L23, including Waterloo and Blundellsands, and set out treatment options in writing.
The sale has hit a knotweed snag. Now what?
When a mortgage valuation mentions Japanese knotweed, everything can stall while people work out how serious it is. RICS guidance published in 2022 has steered surveyors away from the old “7-metre rule” and towards a category-based assessment. That looks at how far the plant is from the property and boundaries, and whether it is causing any damage. A stand at the bottom of a long garden is a very different prospect from one pushing through a patio beside the back door.
What lenders want varies. Many are content once a professional knotweed management plan is in place; some ask for that plan to come with an insurance-backed guarantee. We cannot promise what any lender or buyer will decide, so always check the exact requirement with the broker or lender. Our knotweed and mortgages page explains the process in more detail.
What a Crosby survey covers
- ConfirmationIs it knotweed, or a lookalike such as bindweed, Himalayan honeysuckle or bamboo?
- ExtentWe map the visible stand and estimate how far the rhizome may reach.
- DistancesMeasurements to the house, outbuildings, boundaries and neighbouring gardens.
- Damage checkSigns of the plant exploiting cracks in paths, walls, drains or hard landscaping.
- Written planRecommended approach, timings and a written quote you can share with the other side.
You can find a fuller description on our knotweed survey page.
Older gardens, mature boundaries
Much of Crosby is made up of settled suburban streets with long, mature gardens, hedges and old walls. Those boundaries can hide a slow-growing stand for years, especially where a neighbour’s garden or a shared entry has been left to its own devices. Knotweed that has been cut back repeatedly can also look stunted and less obvious, which is one reason a survey is better than a quick glance during a viewing.
Gardens closer to the coast have sandier soil, but knotweed is not fussy about ground. If it arrives in imported topsoil or on garden waste, it will establish in most conditions found around Crosby.
Sellers: be honest early
If you know there is knotweed, it is far better to get it surveyed and on a plan before you list the property. A buyer who discovers it late tends to lose confidence, whereas one who sees a treatment record and a plan already under way has something to take to their lender. Never try to hide it by cutting it down before viewings: the canes come back, and the TA6 question asks what you know, not what is visible on the day.
Buyers: questions worth asking
- Has the seller had a professional survey, and can you see the report?
- Is there a treatment programme in place, and how many seasons has it run?
- Are there treatment records for each visit?
- Does your lender need anything more, such as a guarantee, and does the current plan meet that?
If any of those answers are vague, ask your solicitor to raise it. We are happy to survey for buyers as well as sellers, and to explain our findings in plain English. We also cover the coast further north in Southport and inland towards Maghull.
For a general overview of Japanese knotweed treatment across Merseyside, or to see how our professional knotweed removal works from start to finish, visit the homepage.
Crosby property and knotweed?
Call 07777 659786 and tell us whether you are buying, selling or remortgaging. Send photos if you have them and we will arrange a survey.
Frequently asked questions
My Crosby buyer’s surveyor says there may be knotweed. Who should arrange the survey?
Either side can, but sellers often commission one so they control the timing and have a report ready to share. Buyers sometimes prefer their own. What matters most is that the survey is carried out by a specialist and leads to a written plan the lender can look at.
Does the 7-metre rule still apply in Crosby?
The old 7-metre rule has largely been replaced. RICS guidance published in 2022 uses categories based on distance to buildings and boundaries and on whether the plant is causing damage. Individual lenders set their own policies, so ask your broker what they need.
Can I sell my Crosby house while knotweed treatment is still going on?
Many sales go through with a treatment programme part-way through, provided a professional plan is in place and the records are available. Whether a particular buyer and lender accept it is their decision, so share the plan early and let your solicitor handle the questions.
What if the knotweed is in my neighbour’s garden in Waterloo, not mine?
It still matters, because surveyors and buyers look at plants near the boundary. We can survey your side and record distances. It is worth talking to your neighbour; if that does not work, a solicitor can advise on the options.
Can knotweed grow in sandy coastal soil near Crosby beach?
Yes. Japanese knotweed tolerates a wide range of soils. It spreads through rhizome and fragments rather than seed in the UK, so wherever contaminated soil or cuttings end up, it can establish.