Checklists · Construction planning
Demolition and Strip-Out Scope Definition Checklist
To help an owner define the edge of the building that survives, rather than the edge of the project, and to record what was established, disconnected, supported and discovered before anything was taken away.
7 sections · 42 planning prompts · educational owner-side preparation
https://www.builddesignhub.com/checklists/construction-project-planning/demolition-and-strip-out-scope-definition · Build Design Hub — educational planning resource. Requirements vary by project and location.
Scope
What this checklist covers
The preparation ground these prompts walk through.
- Drawing the retention line and getting it onto a document everyone works from
- What has to be established about the building before anything is disturbed
- Services, disconnection and who confirms a supply is no longer live
- Neighbours, shared structures and what they are told before work starts
- What is kept or salvaged, and what record is made of what was found
Audience
Who this checklist is for
- Owners of a property where part of the building is to be taken down
- Households planning a strip-out before a renovation begins
- Self-builders clearing a plot with existing structures on it
- Owners preparing for a conversation with a designer about what to retain
Timing
When to use it
- Projects where part of an existing building is to be removed and part retained
- Clearing a site where structures, hardstanding or buried remains may exist
- Preparing the retention line before a designer is asked to work around it
- Getting clear on what has to happen before anything is taken away
- Deciding what will be kept, reused or recorded before it is gone
Limits
When it is not sufficient
This is general planning preparation. These situations need a qualified professional, and often the relevant authority.
- Deciding what can safely be removed, which depends on how the building carries load and belongs entirely to a qualified engineer
- Any judgement about hazardous materials, which must be established by a suitably qualified specialist before anything is disturbed
- Determining what permissions apply, which only your local authority is in a position to confirm
- Replacing the temporary support design, surveys and method statements that the people carrying out the work rely on
The checklist
Work through the sections
Tick the boxes on paper or on screen — nothing is stored, so print the page if you want to keep your marks.
1.Drawing the line between what goes and what stays
The retention line is an owner decision with consequences for everyone else. It is worth drawing it deliberately rather than letting it emerge.
Mark on a plan what you intend to keep and what you intend to remove, and treat that drawing as the document the conversation is held against.
A line on a plan produces a much sharper conversation than a description, and disagreements surface immediately rather than later.
Write down why each retained part is being kept, whether for structure, appearance, permissions, cost or attachment, since the reason affects how firm the decision is.
Some reasons survive a difficult discovery and some do not, and knowing which is which is useful before one arrives.
Ask your designer and engineer what the retention line depends on, and which parts of it are a preference rather than a constraint.
Owners often defend a line that was never load-bearing on the project, and free up options by asking.
Whether anything can be removed depends on how the building carries load. That is a matter for a qualified engineer, not for a plan you have drawn.
Note any finish, feature or fitting you intend to keep in place rather than remove, since protecting something is a different instruction from leaving it.
Things left in place with no protection arrangement are the classic casualty of a strip-out, and nobody is at fault afterwards.
Decide who is entitled to change the retention line once work is under way, and record that before anyone is on site.
Lines get moved on site by whoever is standing there, and agreeing this in advance is the only thing that prevents it.
Photograph everything on both sides of the line before anything is touched, including the parts you currently consider uninteresting or not worth recording.
The uninteresting parts are the ones somebody asks about later, and once they are gone the question cannot be answered.
2.What has to be established before anything is disturbed
Several things about an existing building have to be known before it is opened up, and arranging them is an owner responsibility even when someone else carries them out.
Ask which surveys and investigations should be carried out before anything is removed, who arranges each one, and how long each takes.
Owners often discover a required survey when it is already holding the programme up, and the list is easy to ask for in advance.
Ask what has to be established about hazardous materials before anything is disturbed, and confirm who is responsible for arranging that work.
This has to be settled by a suitably qualified specialist before work starts, and the arrangement usually sits with the owner.
Nothing about hazardous materials can be judged by looking. It must be established by a suitably qualified specialist before anything is disturbed.
Ask who establishes what is holding the building up, and what temporary support has to be designed before any removal begins.
Temporary support is a designed arrangement rather than a site decision, and the owner is the party who commissions it.
Confirm with your local authority what permissions or notifications apply to removing any part of the building, and record who told you and when.
Requirements vary by location and by building, and a dated note of a conversation is traceable in a way that general understanding is not.
Only your local authority can say what applies to your property. Nothing on this page determines what any project requires.
Ask whether anything on the site carries a designation or protection, including trees, walls and the building itself, and treat anything you hear as something to check.
Designations attach to things that look ordinary, which is precisely why they are discovered after they have been removed.
Ask whether wildlife or nesting could affect the timing of any removal, and who establishes that before work is planned.
This can move a programme substantially and is easier to raise early than to discover at the point of starting.
3.Services before anything comes out
Live supplies inside a building being taken apart are the most consequential unknown on a strip-out, and the arrangements sit partly with the owner.
List every supply reaching the building, including ones you no longer use, and note which of them you have never seen a meter or a stopcock for.
Unused supplies are still supplies, and an owner is often the only person who remembers one exists.
Ask who arranges the disconnection of each supply, how long each takes to arrange, and what evidence you will receive that it has happened.
Disconnections are arranged with third parties on their own timescales, and the requests have to be made well ahead.
Ask which supplies have to remain available during the work and how they will be kept clear of the area being removed.
A site usually needs power and water, and the arrangement for that is separate from the disconnections.
Ask which services cross the retention line and what happens to the part that stays, since a cut supply may serve something being kept.
Services rarely follow the same line an owner drew, and the crossings are found by whoever is removing something.
Ask whether anything buried or shared with a neighbour runs through the area, and who would confirm that before ground is disturbed.
Shared arrangements are usually informal and undocumented, and they surface at the worst possible moment.
Nothing about the position or status of a buried service can be settled from what is visible. Ask the relevant undertaking before ground is disturbed.
Record what you were told about each supply, by whom and on what date, and keep the evidence of disconnection with that record.
This is the record somebody asks for when a question arises months later, and it exists only if it was kept at the time.
5.What you keep, salvage or reuse
Anything that is to survive has to be identified before it is in a skip. This is one of the few parts of a strip-out that is entirely an owner decision.
List everything you want to keep, whether for reuse, sale, sentiment or repair elsewhere, and mark each one physically as well as on paper.
A list in an email is not visible to the person holding the tool, which is how things are lost.
Decide where kept items will be stored, who moves them, and whether they need protecting from weather while the work goes on.
Items saved and then stacked in the open are lost just as completely as items thrown away.
Ask your designer early whether anything you want to reuse can realistically be incorporated, rather than saving it and finding out later.
Reuse has to be designed in rather than fitted afterwards, and the conversation belongs at this stage.
Record any feature you are not keeping but may want to reproduce, with photographs and notes taken close up and from a distance.
Owners frequently regret a removal and have nothing to work from, and the record costs nothing at the time.
Ask what happens to material that is removed, where it goes, and whether anything is separated for reuse or recycling.
Owners often care about this and rarely ask, and the answer varies considerably between the people doing the work.
Keep a small sample of anything distinctive that is being removed, such as a tile, a brick or a piece of trim, labelled with where it came from.
Matching something later is far easier with a physical piece than with a photograph, and it takes a moment to set aside.
6.When something unexpected is found
Removal reveals things. The useful preparation is agreeing in advance how a discovery reaches you and who decides what happens next.
Ask who tells you when something unexpected is found, how quickly, and whether work in that area stops in the meantime.
The arrangement for this is almost never stated, and its absence is what turns a discovery into a dispute.
Ask what would happen if unexpected material such as buried waste, tanks or contaminated ground is uncovered, and who decides what happens next on the day.
Decisions taken on the day without the owner are the ones that are hardest to unwind afterwards.
Anything unexpected uncovered during removal should be left undisturbed until a suitably qualified professional has looked at it.
Ask what happens if the building turns out to be holding together differently from what was assumed, and who is called.
This is the most common kind of discovery, and having the route agreed beforehand makes the pause much shorter.
Agree that every discovery is photographed and recorded before anything is altered, and that a copy comes to you.
The record of what was found is what makes the later decision defensible, and it is only made if it was agreed.
Decide in advance how your household will make a quick decision if one is needed, and who can speak for you.
Discoveries arrive at inconvenient moments, and a decision route agreed in calm conditions holds up far better.
Record any discovery that changes the retention line, and reissue the marked plan rather than amending it in conversation.
A plan everyone is still working from is worth reissuing, because a verbal amendment reaches roughly half the people involved.
7.The record of what was there
Once a building is partly removed, the only remaining evidence of what it was is the record made at the time.
Photograph the building room by room and elevation by elevation before work starts, rather than only the parts that interest you.
A systematic set is usable later; a collection of interesting shots is not, however good the individual images are.
Ask for the building to be photographed once opened up and before anything is covered again, and agree that copies come to you.
This is the only opportunity anyone will ever have to see the building's construction, and it lasts a few days.
Note where services, openings and structures actually turned out to be, since these commonly differ from any drawing you were given.
An as-found record is worth more than an as-drawn one, and it exists only if somebody made it.
Keep every survey, report and piece of correspondence about the existing building together in one place, including the ones that found nothing at all.
A report that found nothing is evidence too, and separating it from the rest makes a complete record look incomplete.
Date and label everything as you go, since a folder of undated images is very close to no record at all.
This is tedious at the time and the difference between a usable archive and an unusable one.
Plan for this record to stay with the property rather than with you, and say so to whoever assembles the handover documents.
Records that travel with a household instead of a building are lost at the first sale.
Preparation
Documents and information to gather
Having these to hand usually makes the first conversation shorter and more useful.
- A plan marked with what is to be retained and what is to be removed, dated and reissued when it changes
- Any survey, report or investigation relating to the existing building, including ones that found nothing
- Evidence of disconnection for every supply, with the date and the party that carried it out
- Title documents showing boundaries, shared structures and any rights affecting the property
- A systematic set of photographs of the building before work starts, room by room and elevation by elevation
- Correspondence with the local authority about permissions, notifications and any designation affecting the site
- Any record made of the condition of neighbouring property before work begins
Records
Decisions to record before work begins
Write these down in your own words, with the date, so everyone is working from the same version.
- What is to be retained, what is to be removed, and the reason each retained part is being kept
- Who is entitled to change the retention line once work is under way
- Which items are to be kept, salvaged or reused, where they will be stored and who moves them
- Which supplies are to be disconnected and which have to remain available during the work
- How a discovery reaches you, how quickly, and who can make a decision on your behalf
- What happens to removed material, and whether anything is separated for reuse
Professional review
Questions to discuss with qualified professionals
Bring these to the relevant qualified professional, supplier or authority. Requirements vary by project and location.
- Which surveys and investigations should be carried out before anything is removed, and who arranges each?
- What has to be established about hazardous materials before anything is disturbed?
- Who establishes what is holding the building up, and what temporary support has to be designed?
- Which parts of my retention line are actually constrained, and which are simply a preference?
- Which services cross the line, and what happens to the part of the building that stays?
- Who is responsible for notifying neighbouring owners about work near a shared boundary?
- What record is made of the condition of neighbouring property before work starts?
- Who tells me if something unexpected is found, and does work in that area stop meanwhile?
- What record will exist of how the building was actually built, once it is opened up?
Blind spots
Commonly overlooked items
- Supplies nobody uses any more, which are still supplies and still have to be dealt with
- Something attached to a neighbour's building that is only discovered while it is being removed
- Items the household wanted to keep, listed in an email nobody holding a tool has read
- That services rarely follow the line an owner drew, so a cut supply may serve something retained
- Photographing the building while it is open, which is the only chance anyone will ever have
- Wildlife or nesting, which can move a programme substantially and is raised far too late
- A record of what was found, which is the only evidence a later decision can be defended by
What this checklist does not do
- Whether any part of a building can be removed depends on how it carries load. That is a matter for a qualified engineer and never for a plan an owner has drawn.
- Hazardous materials cannot be judged by looking. What is present must be established by a suitably qualified specialist before anything is disturbed.
- Only your local authority can say what permissions or notifications apply to removing part of a building on your property.
- Temporary support, method and sequence belong to the people responsible for the works and their designers. Nothing here should be read as guidance on any of them.
More preparation
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Explanatory planning guidance behind the decisions on this page.
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