Inherited Retaining Structure Questions Checklist

Go back through the conveyancing pack and property information forms and note anything that mentions a wall, a bank, a terrace or works to the garden.

Sellers are asked about alterations and disputes, and a retaining structure built during their ownership sometimes surfaces in those answers rather than anywhere else.

Look through any search results, approval correspondence or completion paperwork you received and note whether outdoor works appear anywhere in them.

An approval file is one of the few documents that can settle in minutes what a long period of looking at a face will not.

Check whether any guarantee, warranty or product paperwork came with the property, and write down what each one actually covers outdoors.

Outdoor cover is often narrower than owners assume, and reading it before you need it avoids a misplaced expectation later.

If the property was part of a development, find the handover pack and note whether any drawing shows ground levels, drainage or the boundary treatment.

Level changes formed during a development are more likely to have been drawn than ones added later by an owner.

Look for any photographs taken during a previous sale or renovation, and note whether any of them happen to show the structure before it was finished.

A picture taken while something was open can tell a professional more about the construction than the completed face ever will.

Write down explicitly which documents you looked for and did not find, rather than leaving the search unrecorded in your notes.

Knowing that a category of record was searched for and is genuinely absent is itself useful to whoever advises you.

Ask your conveyancer whether the previous owner can be approached, and prepare a short written list of questions rather than a general enquiry.

A specific question about who built something and roughly when is far more likely to be answered than an open request for information.

Speak to whoever owns the ground on the other side of the level change, and note what they remember about when it was built or altered.

A retained edge usually has two owners looking at it from different heights, and only one of them may have been present when it went in.

Ask neighbours who have been in the street a long time whether they remember machinery, deliveries or works in the garden, and write down what they say.

Recollections are imprecise but they establish a rough period, which narrows what an engineer has to consider.

Where a management company, estate or landlord exists, ask in writing whether they hold any record of the structure and who maintains it.

Responsibility for a retained edge in a managed development is sometimes documented even when the construction is not.

Try to establish whether the structure was built by a contractor, by a previous owner themselves, or as part of the original development.

How something came to be built often says more about what records could exist than any observation of the finished face does.

Write each conversation down with the date and who said it, and keep the notes with the property paperwork rather than in your memory.

Second-hand recollections lose their value quickly when nobody can say who provided them or when.

Walk the full length of the structure and note where it is actually holding ground back and where it simply stands free with ground level on both sides.

Many garden walls retain over part of their length only, and the distinction matters a great deal to whoever eventually looks at it.

Photograph the coping or capping along its length and note whether the line runs straight or whether it dips, steps or opens anywhere.

A termination line is one of the few features an owner can record accurately, and a change along it is a useful observation.

Note whether any outlets, weeps or pipe ends appear anywhere on the face or beside the structure, and mark their positions on a sketch.

Every mechanism relies on drainage and each arranges it differently, so what is present, and what is absent, is worth recording either way.

Whether drainage associated with a retaining structure is present or working is a matter for a qualified engineer; the absence of visible outlets establishes nothing.

Record what the face appears to be made of, and write alongside it that the material does not establish what is behind it.

Identical units front more than one kind of structure, so the note guards your own record against being read as an identification.

Note whether the face has taken up any distortion between its units or has recorded it as cracking, and photograph any example you find.

How a structure has responded to movement says something about how it is jointed, which is a narrower observation than saying it has failed.

Record what currently stands on, near or against the top of the structure, including fences, sheds, planters, parked vehicles and stored material.

What is already there is part of what any later advice has to account for, and it is easily forgotten once it has been in place for years.

Walk the ground behind the face and note whether any strip of it behaves differently from the rest of the garden, whether wetter, softer or lower.

The extent of what is doing the retaining is invisible, but the surface some distance back sometimes reports on it.

Note any settlement of a surface behind the structure, or any void opening behind facing units, and photograph it rather than making it good.

Filling something in before anybody has seen it removes the evidence that would have made the observation useful.

Record what the ground in front of the structure is doing, including whether it has been lowered at any point to gain headroom or a level.

For some structures what sits in front is part of what is holding them, so any history of lowering there is worth writing down.

Lowering ground in front of or at the base of a retaining structure can alter what is holding it, and belongs with a qualified engineer.

Write down any history you know of trenching, planting pits, post holes or a soakaway behind or beside the structure, however long ago.

Work nobody described as excavation at the time is exactly the history a professional will want to hear about first.

Note where water runs, stands or disappears near the structure during heavy rain, and record which outlets you actually saw discharging.

Watching in wet weather is the only way to establish whether an outlet is doing anything, and it takes one visit at the right moment.

Record any tree, hedge or established shrub growing on, above or immediately behind the structure, and note roughly how long it has been there.

Planting near a retained edge raises questions for both the structure and the tree, and both belong with qualified people.

Ask a qualified arboricultural professional about any established tree, and confirm locally whether it carries protection before anything is planned.

Write what you can see in plain descriptive words, such as where, what shape and how far, and leave the question of cause entirely open.

A description can be checked by somebody else; a conclusion about cause cannot, and it tends to steer the person you eventually ask.

Put a date on every photograph and note, and record what the weather had been doing in the days before you looked.

Without a date and a weather note, a record cannot show whether anything is changing, which is most of its eventual value.

Choose a few fixed positions to photograph from and mark them on a sketch, so later pictures can be compared with these ones.

Photographs taken from wandering positions are difficult to compare, and comparison is what turns a picture into evidence.

Write the word unknown wherever you cannot establish something, rather than filling the gap with the most plausible explanation.

An honest gap is information; a plausible guess written into a record is very difficult for anyone to unpick later.

Keep the whole record with the property paperwork, so that it survives a change of ownership rather than leaving with you.

The next owner starts from nothing unless somebody deliberately arranges otherwise, which is how these structures become unknown in the first place.

Assemble the documents, the sketch, the dated photographs and the conversation notes into one pack before you approach anybody.

A gathered record lets professional time go on judgement rather than on establishing what was already findable.

Write down what you are actually thinking of doing near the structure, even if it is nothing yet, so the advice can be aimed at something.

Advice about an existing structure is much more useful when it knows whether a fence, a terrace or simply reassurance is behind the question.

Ask what further information would settle the construction of the structure, and what investigation would be proportionate to what you intend.

Investigation is a spectrum, and the sensible amount depends entirely on what is being proposed near the structure.

Ask whether the zone that must not be disturbed can be described and marked on a drawing that stays with the property.

That single drawing is what makes every later decision about a post, a trench or a base something an owner can act on responsibly.

Ask what obligations may apply where the structure sits on or near a boundary, and confirm locally what notice or consent is involved.

A retained edge frequently affects ground belonging to somebody else, and those obligations are settled before work rather than after.

Ask what you should do in the meantime, and write down anything you are told to avoid doing near the structure until advice is complete.

An interim instruction is easy to forget and easy to breach accidentally, which is why it belongs in writing straight away.

Write down where you looked, who you asked and what came back, so that the conclusion of unknown is supported rather than assumed.

A documented search is what tells the next person not to repeat it, and it makes the finding credible to a professional.

Note in the record that nothing should be assumed about foundations, drainage or reinforcement, and treat appearance as settling none of it.

A wall of unknown construction is not the same as a wall of ordinary construction, and writing that down protects later decisions.

Write a standing note that nothing is to be dug behind, in front of or at the base of the structure without advice first.

The jobs that reach those positions are rarely described as excavation, which is precisely why a standing note is worth having.

Whether any particular excavation is acceptable near a retaining structure is a determination for a qualified engineer on your site.

Note where any outlets are and keep them clear and visible, recording anything that appears to have stopped discharging.

An outlet that has silted looks much like one that is clear, so the observation is worth making while water is actually running.

Begin a repeating dated observation record from fixed viewpoints, so that the structure has a history from this point forward even though it has none before it.

Slow change is only visible against an earlier picture, and the earliest record you can have is the one you start today.

Decide now that any proposal to change levels near the structure starts with a professional conversation rather than with a quotation from a trade.

Once a price has been given and accepted, the sequence tends to run forward, and the question about the structure never gets asked.