At SE Knotweed, on-site relocation moves knotweed-contaminated soil into a lined burial cell or bund elsewhere on the same plot, sealed at a depth the rhizome cannot escape. It suits larger sites where the soil can stay and off-site disposal fees are avoided.
On-site relocation costs from around £3,000 to £8,000, driven by the soil volume and the cell construction, and we confirm the figure at survey.
At SE Knotweed, on-site relocation, also called cell burial or bunding, moves the knotweed-contaminated soil to another part of the same plot and seals it in a lined cell rather than paying to send it to a licensed tip.
It keeps the soil on site, which cuts the disposal cost that makes full excavation expensive, and it suits larger gardens and development plots with room to bury. Book a survey to see whether your plot has space.
We excavate the stand, then form a cell lined on the base and sides with a certified root-barrier membrane, place the contaminated soil inside, and either cap it under at least 2 metres of clean soil or fully encapsulate it in the membrane at a shallower depth.
The cell is positioned away from services, drains and boundaries, and its location and depth are recorded on a site plan kept with the property.
On-site relocation suits sites with enough room to bury the soil away from foundations, drains and the boundary, and where the client wants to avoid the gate fees of off-site disposal. It is common on development plots and larger gardens.
On a small garden with no spare ground, excavation and disposal or a herbicide programme usually fits better, which we confirm at survey.
On-site relocation costs from around £3,000 to £8,000 for a domestic or small development site, driven by the volume of soil, the cell construction and machinery access. It sits below full excavation because there is no off-site disposal gate fee.
We measure the stand and assess the burial position at survey and give a fixed figure, so please treat the range as indicative.
Yes. The cell location, depth and membrane are recorded on a plan, and the work is backed by an insurance-backed guarantee that a lender accepts.
The record matters because the cell must not be disturbed by later digging, so it is handed over with the waste and management paperwork and travels with the property.
Tell us the address and what a surveyor flagged. We confirm the plant, record the RICS category and set out the figures.