Japanese Knotweed Survey

What is Japanese knotweed?

Japanese knotweed is one of a number of invasive plants that can cause problems to your property in the UK:


It’s a large clump-forming plant, which grows up to 3m tall, with light green shield-shaped leaves with a flattened base, approximately 10-15cm long.

The stem is hollow, bamboo-like, light green speckled with pink-red.

There are only female plants in Britain, so no viable seeds are produced.

The flowers are tiny and clustered together in creamy-white sprays, present from August to October.

It produces thick and extensive roots called rhizomes, orangey-yellow inside, and spreads by fragments of rhizome. A piece the size of your thumbnail is sufficient. Fragments of rhizome get picked up in soil and on equipment.

Over the winter the plant dies back leaving tall brown canes but as a perennial plant its top growth is renewed each year from the rhizomes which can spread relentlessly.

We are the leading specialists in Japanese Knotweed Removal and invasive weed control, providing a professional service at the right price with assured results across London, Surrey, Sussex, Kent,Isle of Wight Hampshire and the surrounding areas. Our team are fully qualified and insured and aim for 100% customer satisfaction.

We undertake surveys on residential properties and sites of all sizes and provide you with a written report identifying any areas of Knotweed found and the programme of treatment we recommend. We are a member of Checkatrade and the PCA (Property Care Association) and our mortgage compliant surveys and reports mean you can proceed with buying or selling your home with one less thing to worry about. The Japanese Knotweed Group also offer a 5 or 10 Year Insurance Backed Guarantee so you have extra peace mind against re-growth once the treatment is complete.

While this invasive, non-native plant can be difficult to control, it should be recognised that timely and persistent treatment programmes can minimise its impact. There are a variety of ways to deal with this invasive fast growing plant from Herbicide Treatments to excavation disposal and burial methods depending upon our clients requirements.

To find out more about our service and our recommendations for treatment of your property or site please call or send us an email and we will contact you to discuss your requirements.This extremely invasive species of plant can damage property including drains, walls, paths, driveways, outbuildings etc, and as such is a concern for lenders.It is not an offence to have Japanese Knotweed on your land. However, it is a criminal offence to plant it, or otherwise cause it to grow in the wild. In fact all reasonable steps should be taken and due diligence exercised to avoid spreading the plant.The property information form that a seller completes when marketing their home has a section on Japanese Knotweed. The seller must disclose whether the property is affected by the plant, and if it is, they must also say whether a management plan is in place to deal with it, and provide a copy of any such plan.Furthermore, a valuer carrying out a mortgage valuation for a lender must note on their report if Japanese Knotweed is present.Some lenders may automatically refuse to lend where there is a presence of Japanese Knotweed, while others will lend but will wish to know there is a treatment plan or management plan in place, and will usually require an insurance-backed guarantee. Most lenders will look at each case individually and will consider their valuer's comments.Do remember that in view of the invasive nature and rapid spread of Japanese Knotweed, it can be an issue for lenders even when it is only present in a neighbouring garden and not actually in the garden of the property to be mortgaged.


japanese knotweed Survey And Report £175 +VAT

At a time when you’re already spending a lot of money, a japanese knotweed survey can seem like a big expense. However, it’s far better to be aware of any issues before you buy a house so that you can make an informed decision about how much you’re willing to pay for it and, if necessary, budget for any treatment work that will need doing. You may also be able to use the information in the survey to negotiate with the vendor. For example, if your survey finds that you will need to undertake knotweed treatment costing £3,000 you could ask for a £3,000 reduction in price, or alternatively ask the seller to make the necessary treatment before you exchange contracts. If you’re looking for a company that provides meticulous and high quality Japanese Knotweed surveying backed by excellent customer service, you’ve come to the right place. The Japanese knotweed group we measure our success by the contribution we make to your home or business. We can save you time and money. Our excellent client relationship and many years of experience have led us to continuously review our procedures in order to aid your visualisation of your site. Since 1996 we have been treating knotweed carring out survey reports services for a wide range of clients. From jobs for private households right through to major contracts with councils and developers, we’re proud of the fact that we’re big enough to take on and manage substantial projects with ease, yet small enough to make sure you get real personal service..


FREE full knotweed survey when you proceed with one of our treatment plans Full mortgage-compliant knotweed report NEXT working day of site visit


Knotweed service package that satisfies banks and mortgage companies We appreciate that a fast turnaround time is essential for property owners and purchasers, therefore we will get your comprehensive knotweed report sent out to you along with your quotation next working day of our site visit.



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