A specification is not a quote brief. The brief says what to do, where and by when. The specification describes what the finished work looks like, so it can be priced accurately and checked when it is done.
Get this right and you avoid the handover argument about what "clear" meant. Get it wrong and you find out when the machines have gone and regrowth is showing through.
Break the site into zones and describe each one
Scrub, bramble, bracken, self-seeded birch and mature hedgerow are different jobs, with different methods and costs. A single line saying "clear all vegetation" leaves contractors to make different assumptions about method and finish.
Split the site into zones and state the species, the finish and the constraints in each. A table works best because every row can be priced and checked.
| Zone | Vegetation | Finish required | Constraints |
|---|---|---|---|
| Compound edge | Bramble, nettle, self-seeded birch to 3 m | Cut to ground level, stumps treated or ground out | Keep 2 m clear of the fence line |
| Bund along the boundary | Mixed scrub with occasional mature trees | Scrub cut to 150 mm; trees retained | Root protection areas marked; no machinery inside |
| Ditch corridor | Willow scrub, tall herb | Cut in sections outside the nesting season | Watercourse buffer; check for nesting birds first |
Treat the rows above as a format example, not a template. Each ties an area to a stated finish, so nothing is left to interpretation at handover.
Cut height is the number that settles the price
Write the finished height in millimetres above ground level, and state how it will be checked. That line decides what machine is used and how long the job takes.
- Woody scrub: cut stems to a stated height, for example 100 to 150 mm where the appointed specialist considers this suitable, so stumps can be seen and treated later
- Bramble and briar: cut to ground level, with the cut faces at or near the surface
- Saplings and young trees: cut at a stated height, and state whether the stump is ground out or left
These are commercial choices, not legal standards. What matters is that the number is in the document and used to check the work. On a large site, agree a sample area first.
A specification that says "cut low" gets priced at whatever the machine is set to.
Specify what stays, not just what gets cut
Total clearance is rarely the right answer, and often not a permitted one. Detail the retained features:
- Retained trees, hedgerows and individual shrubs, each with a marked no-works area around it
- Buffers along watercourses, ditches and drains, where cutting can silt a channel or disturb protected species
- Deadwood, veteran trees and habitat piles, unless safety work justifies their removal
- Ground nesting and refuge areas identified by an ecologist as sensitive
Where a tree is protected by a Tree Preservation Order or stands in a conservation area, settle the consent or notice position before the specification is issued. This is a separate check from a felling licence, and neither replaces the other.
Marking retained trees on the ground matters as much as on the plan. A ribbon or stake line is what the machine operator sees.
Invasive plants change everything: method, price and disposal
Japanese knotweed, Himalayan balsam, giant hogweed and rhododendron ponticum are common on commercial sites. They cannot be an afterthought added to the specification. It is an offence to plant them in the wild, or cause them to grow in the wild, and the species-specific restrictions and waste route need to be checked.
There is no general requirement to remove knotweed simply because it is present, but allowing spread can create legal liabilities. Obtain specialist advice on the site and disposal route. Soil or plant material contaminated with knotweed may be classified as controlled waste, which changes the disposal route and the cost. Rhizome fragments as small as 1 cm can start a new plant, so a general clearance crew working without a specific method is a poor choice. Knotweed treatment normally belongs with a specialist under an agreed plan, with the specification describing the outcome and monitoring rather than the chemical.
Machinery hygiene must be in the specification. Tracked plant leaving infested ground should be cleaned before it works on clean ground, and soil, arisings and water must not move from an infested zone to a clean one. Rhizome fragments travel on tracks and buckets, so hygiene is not optional.
Consents and checks before the first cut
The small-volume exception generally permits up to five cubic metres felled per calendar quarter, with no more than two cubic metres sold. Outside an applicable exception, obtain a felling licence in England unless an exception applies. There are diameter-based exceptions measured at 1.3 metres above ground, alongside specific location exceptions for gardens, orchards, churchyards and certain public open spaces. The full-planning-permission exception is limited to felling immediately required to carry out the authorised development; confirm its application before work.
Removing a countryside hedgerow covered by the regulations requires permission from the local planning authority, and a hedgerow at least 30 years old that meets an importance criterion is protected. The authority has 42 days to respond to a written notice, and a permission to remove runs for two years. Removing a protected hedgerow without permission can trigger a replacement notice.
Wild birds and their eggs have legal protection. Nests are protected while in use or being built, with additional protections for some species. Follow GOV.UK wild bird guidance and obtain competent ecological advice on the checks, timing and restrictions for the site. No universal calendar window makes clearance safe. Bats and their breeding sites and resting places also have legal protection; obtain specialist advice where the work could affect them.
Checks must be timed appropriately to the work. An earlier survey does not prove that birds have not since started nesting.
Regrowth is the part most specifications forget
Cutting vigorous scrub once rarely finishes it. Bramble, bracken, willow and rhododendron regrow from the base, and cut stems can produce a denser stand than the original. A site that must stay clear needs a follow-up regime, not a single visit.
- The number of re-cut visits, and the interval between them
- Whether treatment of cut stumps is included, and who carries it out
- Who monitors regrowth and at what point the site is signed off
- What happens if the work sits under a planning condition or an ecological commitment
Herbicide application is a separate decision from cutting. If chemical treatment is specified, it belongs with a qualified operator working to the product approval, and the specification should describe the outcome expected rather than the method.
Disposal: chips, brash, soil and burning
Decide where the material goes before work starts, because the answer changes the price and the machinery on site.
Chipping and spreading on site is often cheapest, but only where the chips are wanted and will not smother retained habitat. Where material leaving site is waste, confirm the applicable carrier registration, authorised destination and transfer records. A qualifying season ticket may cover repeated non-hazardous transfers. The Environment Agency's public register shows whether a carrier is registered.
Burning plant material on site is possible under a D7 waste exemption, which covers plant and untreated wood burned at the place it was produced. It comes with limits, including up to 10 tonnes in any 24-hour period, and conditions on pollution and smoke. It does not cover treated timber, and near housing, roads or a business park the practical objections usually settle the argument against it.
Checking the work and signing it off
Walk the zones against the specification, in the order they appear in the document. Measure cut heights where specified, and check the retained areas were respected with no machinery tracked through them.
Photographs help when taken from a fixed point in each zone, dated and kept with the handover sheet. Ask for the waste documents with the final invoice. List snagging against the specification line, agree a date, and check the follow-up visit the same way.
Specification lines you can copy into your brief
- Zone reference and what is in it: species, height, density
- Finish required, with cut heights in millimetres and the measurement method
- Retained features, buffers and no-go areas, with the reason for each
- Invasive plant handling, including hygiene and disposal requirements
- Consent status: felling licence, TPO or conservation area, hedgerow permission, wildlife checks
- Arisings: chipped, removed, burned or stacked, and where
- Re-cut visits, treatment and the monitoring period
- Evidence required at handover: photos, transfer notes, sign-off sheet
If you are specifying vegetation or scrub clearance across North Yorkshire, County Durham or the North East, we can work from your specification or help you shape one before it goes to tender. Our vegetation and site clearance service covers scrub and bramble clearance, tree work, stump grinding, and arisings removal, with RAMS issued before we start. Describe the site, each zone and any plan you hold in the contact form, with the finish you need and any survey or report you hold. If documents need to be sent, describe them in the form and we will arrange to see them. Call 07423 269635 if the work is urgent or access is restricted.