Drainage Retrofit Disruption Decision Checklist

Ask for the proposed route to be marked on a plan of the garden rather than described, and keep that plan yourself.

A route described in a conversation is remembered differently by everybody present, including afterwards.

Walk the marked line on the ground and write down everything it passes through, in order, from one end to the other.

Walking it produces a list nobody generates from a drawing, because the drawing shows the destination rather than the lawn it crosses.

Ask how wide a strip is actually worked, rather than how wide the finished element is, and mark that width on your plan.

The disturbed strip is consistently wider than owners picture, and it is the number that governs everything in this checklist.

Ask whether more than one route is possible and what each would cost the garden, keeping the answers as a comparison rather than a preference.

Alternatives frequently exist and are not offered, because the garden consequences are not the designer's brief.

Ask what about the existing levels limits where the work can go, and record the answer in the designer's own words.

On a finished site the available fall is usually what closes options, and it is worth understanding before arguing for a route.

Where drainage can run on a particular site is a determination for a qualified drainage designer working from the levels and the existing network.

Ask what is already believed to be buried along the route, and what would be done if something unexpected is met.

Meeting something unrecorded is ordinary on a finished site, and the plan for that moment is better agreed than improvised.

List every distinct surface the route crosses on its own line, including paths, terraces, standing for vehicles, steps and edges.

Surfaces that sit next to each other get treated as one thing, and they rarely behave the same way when opened.

Ask whether each surface can be lifted and put back, or whether opening it means replacing that area, and who decides.

This is the single question that changes what the work costs the garden, and it has different answers on the same plot.

Whether a particular surface can be opened and reinstated depends on how it was built, and is established by a qualified professional or the original installer.

Ask whether matching material is obtainable for each surface, and whether any spare from the original work still exists anywhere on the property.

Spares kept from the original job are frequently the only way an opened surface disappears again, and they are usually thrown out.

Note where a repair would be most visible, such as across a terrace in view of the house, and say so before the route is fixed.

Visibility of the reinstatement is an owner judgement that nobody else on the project is in a position to make.

Ask what happens to edges, kerbs and restraints along the route, and whether any of them have to come out to open the surface.

Edges are frequently what hold a surface together, and they are disturbed by work that was only supposed to cross the middle.

Photograph every surface along the route before work starts, from positions you can stand in again, and note where each was taken.

Comparison after the work is only possible against a fixed viewpoint, and nobody sets these up once the machines have arrived.

Walk the route and put each plant into one of three groups: can be moved, can be replaced, or cannot be replaced in your lifetime.

The third group is small on most plots and is the one that should drive the route rather than be discovered by it.

Ask a qualified professional whether anything you want to keep could be moved, and whether the time of year the work happens affects that.

Whether a plant survives being moved is not a matter of willingness, and it is worth asking before the diary is set.

Whether any plant can be lifted and re-established, and when, is a matter for a qualified horticultural professional for that plant and site.

Note any tree whose roots the route might reach, and raise it before the route is fixed rather than when the trench arrives.

Work near a tree is a specialist question with its own professional, and it closes routes rather than complicating them.

Whether a route may pass near a particular tree at all is answered by a qualified arboricultural professional, and any protection is confirmed with the local authority.

Note where the route runs along a hedge or boundary planting, and whether the working strip reaches into a neighbour's ground.

Boundary planting belongs to a conversation with a neighbour rather than with a contractor, and it needs the longer lead time.

Note the planting that is not on the route but would be crossed by machines, materials or people getting to it.

Most planting lost to a drainage job is lost beside the trench rather than in it.

Photograph the planting along and beside the route before anything starts, including the areas you expect to be unaffected.

The unaffected areas are the ones nobody photographs and the ones most often argued about afterwards.

Ask for the sequence of the work in plain stages rather than a duration, and note which stages leave the space unusable.

Stages are something a contractor can describe honestly; a total duration on a finished site frequently cannot be.

Mark on your plan which parts of the garden are out of use during which stage, including the routes to and from them.

Access being blocked is usually a bigger loss than the worked area itself, and it is never on the drawing.

Write down what the household actually does in that space and what stops while the work runs, including anything with a fixed date.

Naming the loss concretely is what makes a timing decision possible rather than a source of vague resentment.

Ask whether the time of year the work happens affects the ground, the reinstatement or how long the space stays unusable afterwards.

Ground conditions during the work and during the reinstatement are different questions and both affect the interval.

Ask what happens if the weather stops the work part way, and what state the garden would be left in during a pause.

A paused excavation is a different proposition from a finished one, and it is worth agreeing before it happens.

An open excavation is a hazard. How it is left, guarded or made safe during any pause is a matter for the contractor and qualified professionals.

Ask how long the ground is expected to keep moving or settling after the work, and what would be done if it does.

The space stops being a building site well before it stops changing, and owners rarely ask about the gap.

Ask whether the work can be split so part of the garden stays usable, and what splitting it would add to the disruption overall.

Phasing is frequently possible and rarely offered, because keeping a garden usable is not what the programme is built around.

Ask roughly how much material comes out of the ground and where it stands while the work is going on.

Excavated material occupies far more room than the hole it came from, and it has to stand somewhere in your garden.

Ask whether spoil leaves the site or stays, who arranges that, and where it would go if it stays.

Material intended to be levelled out somewhere on the plot changes the garden a second time, in a way nobody described.

Where excavated material may be taken, and what may be spread or retained on site, is confirmed with the local authority since requirements vary by location.

Walk the route a machine would take from the road to the work, note every gate, step, corner and soft area, and photograph it.

The access route is the part of the garden that always gets damaged and is almost never on anybody's drawing.

Ask what protection is put down on the access route and the standing areas, and who provides and removes it.

Protection is either agreed in advance or improvised, and the improvised version is what leaves ruts.

Agree where deliveries and materials stand, and mark those areas on your plan along with what is currently growing there.

Standing areas are chosen on the first morning by whoever arrives, unless somebody chose them earlier.

Decide what you will tell neighbours in advance about access, machines, noise and working hours, and who in the household does the telling.

A short conversation before the work is easier than a longer one during it, particularly where a shared access is involved.

Agree how the garden is left secure each evening and at weekends, particularly where children, pets or a shared access are involved.

An open garden part way through a project is a different place from a finished one, and the arrangement is assumed rather than agreed.

An open excavation is a hazard. How it is guarded, covered or made safe outside working hours is a matter for the contractor and qualified professionals.

Ask, for each surface and each planted area, which party puts it back, and write a name against every line of that list.

Drainage contractors and landscapers each reasonably assume the other is doing this, and the assumption survives right up to completion.

Check which reinstatement items appear in which quotation, read the two alongside each other, and identify anything that appears in none of them.

The gap between two quotations is where reinstatement disappears, and it is visible only when they are read together.

Write down what you would accept as finished for each area, in plain words, and share it before work rather than after.

Finished means something different to a groundworker and to somebody who looks at the garden every day.

Note that the reinstated area is expected to match the surrounding levels and lines, and ask what would be done if it settles.

A reinstated strip that reads as a line across a lawn or a terrace is the commonest complaint after this kind of work.

Ask who waters, cares for and replaces anything that is replanted, for how long that arrangement runs, and what happens when it ends.

Replanting is usually included and aftercare almost never is, which is why replacement planting so often fails quietly.

Record the decision you reached, what you accepted losing, and what you were told would be put back, dated and shared with both parties.

The record is what lets a disagreement afterwards be about facts rather than about what everybody remembers agreeing.