Checklists · Renovation planning
Part-Finished Project Takeover Preparation Checklist
To prepare an owner taking over a part-built project, whether by purchase, by a contractor leaving or by a stalled build, to establish what exists, what is hidden and what anyone will stand behind.
8 sections · 48 planning prompts · educational owner-side preparation
https://www.builddesignhub.com/checklists/renovation-project-planning/part-finished-project-takeover-preparation · Build Design Hub — educational planning resource. Requirements vary by project and location.
Scope
What this checklist covers
The preparation ground these prompts walk through.
- Establishing what was actually built, as distinct from what was drawn
- What is already concealed and cannot now be seen
- The paperwork that exists, and whether any of it survives the change of hands
- The people who were involved and whether they will speak to you
- What may have to be opened up again before anyone takes responsibility
Audience
Who this checklist is for
- Owners buying a property where work was started and not finished
- Households whose contractor has left a project part-complete
- Self-builders resuming a project that stalled some time ago
- Owners who have inherited a partly built property
Timing
When to use it
- Deciding whether to take on a part-finished project at all
- Assembling what is knowable about work you did not commission
- Preparing for a first conversation with a professional about continuing
- Understanding why a new professional may not take on somebody else's work
- Working out what would have to be established before anyone will proceed
Limits
When it is not sufficient
This is general planning preparation. These situations need a qualified professional, and often the relevant authority.
- Any judgement about whether existing work is sound, adequate or acceptable, which belongs entirely to qualified professionals
- Deciding whether to continue or restart on technical grounds, which needs professional assessment of the specific building
- Interpreting contracts, warranties or approvals, which is a legal matter for a suitably qualified adviser
- Standing in for the survey, investigation and design work a new team will need to carry out
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.Establishing what was actually built
Drawings show intention and buildings show outcome. The first task is to find out how far apart the two are on this particular project.
Ask for every drawing that exists, including superseded versions, and note which ones the work appears to have been built from.
Superseded drawings are often the ones actually used, and the difference is only visible if you have both.
Ask whoever was involved what was changed on site and why, recording each answer as an account rather than as established fact.
Changes made on site are the bulk of the difference between drawing and building, and memory is the only record of many.
Walk the building with the drawings and note every place where what you see does not match what is shown.
This is work an owner can do and it produces a list that makes every later professional conversation shorter.
Noting a difference is not assessing it. What any difference means is for a qualified professional to establish.
Ask how far each part of the work got and whether anything was completed, part-completed or started and abandoned.
Part-completed work is the hardest category to deal with and the one most often described as finished.
Photograph the whole building as you find it, room by room and elevation by elevation, before anything is moved, cleared, tidied or worked on.
The as-found condition is a reference point that disappears the moment anyone starts tidying up.
Ask when work stopped and what the building has been exposed to since, including weather, since that changes what has to be checked.
A building left part-built through a winter is a different proposition from one that stopped last month.
2.What is already concealed
The hardest question on a part-built project is what nobody can now see, and it is best faced directly at the start.
List everything that has already been covered, buried or built over, working room by room rather than from a drawing.
This list defines the whole problem, and it is far more useful than any general statement about progress.
Ask what record exists of each concealed item, including photographs, notes and any check that was carried out before covering.
A record may exist and simply not have been handed on, and asking is the cheapest way to find out.
Ask what is in the ground, including foundations, drainage and services, and what record was made before it was backfilled.
Buried work is the most consequential and the least likely to have been recorded by anybody.
Ask what would be involved in seeing any concealed element again, and which would require opening up rather than inspection.
The answer sets much of the cost and disruption of taking a project on, in a way nothing else does.
Ask who would have checked each element before it was covered, and whether there is evidence that anybody did.
Evidence and assurance are different things, and the distinction is the one that matters here.
An assurance that something was checked is not evidence that it was. What can be relied on is for a qualified professional to judge.
Mark on a plan what is concealed and what is unknown, and keep that plan as the working document for every conversation.
A marked plan makes the extent of the unknown visible, which a written list rarely does.
3.The paperwork that exists
What paperwork survives, and in what form, determines much of what a new team can rely on rather than establish from scratch.
Ask for everything that exists in one request rather than item by item, including things you would not think to name.
A general request produces documents a specific one never asks for, and this is the moment to make it.
Ask what applications, approvals or notifications were made, and confirm the position with your local authority rather than relying on a description.
The status of an approval is held by the authority and not by the seller, and it is the single most important item.
Only your local authority can confirm the status of anything relating to permissions on a property, whatever paperwork you are shown.
Ask what structural or engineering information exists, which party produced it, and whether it covers what was actually built rather than what was drawn.
Information covering a design that was then changed is a document rather than a reassurance.
Ask what reports exist about the ground, the existing building or anything else relating to the site, and ask for them complete with their appendices.
Appendices carry the data, and a report circulating without them is close to useless to anyone assessing it.
Write down what you would expect to exist and does not, since the gaps are as informative as the documents.
A new professional will ask exactly this question, and having answered it already saves considerable time.
Obtain copies of everything rather than being shown documents at a meeting, and check that each thing you receive is complete rather than extracted.
Documents seen and not copied are unavailable at the point they are needed, which is usually months later.
4.Whether anything survives the change of hands
Registrations, warranties and approvals do not automatically follow a property or a project to a new owner, and the answers have to be obtained individually.
Ask whether the project was registered with any warranty provider, what stage it reached, and whether that registration can continue.
A registration that cannot continue is a significant fact, and it is discovered only by asking the provider directly.
Ask what product or installation warranties exist, in whose name, and whether any of them transfers to a new owner.
These are frequently in the name of a contractor who has left, which is a different thing from existing.
Whether any warranty or agreement transfers is a legal matter for a suitably qualified adviser, not for a general assumption.
Ask your local authority whether any approval or permission relating to the property has a limit on it, and record what you are told.
Approvals have their own arrangements, and a stalled project is exactly the situation where they matter.
Ask whether any professional appointment is still live, whether it can be continued, and who would have to agree to that.
Continuing an existing appointment is sometimes far easier than starting again, and sometimes impossible.
Ask whether any obligation attaches to the property from the earlier work, including to neighbours, and take that to an adviser.
Obligations arising from the earlier work can follow the property rather than the person who created them.
Get each of these answers in writing from the party who actually holds the position, rather than from whoever is selling.
A description of a position is not the position, and on this kind of project the difference is routinely material.
5.The people who were involved
The people who did the work hold information that exists nowhere else, and their willingness to share it declines with time.
List everyone known to have been involved and what each of them did, including trades whose names appear only on paperwork.
A name on an invoice is frequently the only surviving record that a particular piece of work happened.
Ask whether each of the people involved is contactable and willing to speak to you, and record the answer either way without pressing anyone.
Some will and some will not, and knowing which is which shapes what you can realistically establish.
Ask what you are told about why the work stopped, from more than one source, and record each account separately.
The reason matters because it frequently explains which parts of the work deserve the closest look.
Ask whether anything is unresolved between the previous owner and anybody who worked on the project, and take that to an adviser.
Unresolved matters can affect a new owner in ways that are not obvious, and they belong to a legal conversation.
Any dispute, claim or unresolved matter relating to earlier work is a legal question for a suitably qualified adviser.
Write down each conversation the same day with the name and date, since accounts blur quickly once several people have spoken.
Notes written later merge accounts together, which is exactly what makes them unusable to a professional.
Ask each person you speak to who else would know about a particular part of the work, and follow that up rather than stopping where you started.
One name usually leads to a better one, and the most useful account is often two conversations away.
6.What may have to be opened up again
A new professional cannot take responsibility for what they cannot see, and the extent of that is the central question of a takeover.
Ask a professional what they would need to see before they would take any responsibility for what is already there.
This question produces the most honest and most useful answer available at this stage of a takeover.
Ask which elements cannot now be verified at all, whatever is opened up, and record that list explicitly rather than leaving it as an impression.
Some things are permanently unverifiable, and knowing which changes the decision rather than the programme.
Ask roughly how much opening up would be involved, and whether it is exploratory or whether the answer is already known to be extensive.
This is the difference between a manageable investigation and effectively rebuilding part of what exists.
Ask what the consequence would be of not opening up, in terms of what nobody could then stand behind.
Framing it as what nobody will stand behind is more useful than framing it as what might be wrong.
Ask what has to be established before design work can resume, and what can be established later without holding anything up.
Sequence is the practical consequence an owner feels most, and it is easily misjudged on a takeover.
Keep these answers together in one place as the basis for the decision about continuing, rather than scattered across several separate conversations.
The decision depends on the combined picture, and no single conversation produces it.
7.Who will take it on, and on what terms
Professionals and contractors treat other people's unfinished work cautiously, and understanding why makes the conversation far more productive.
Ask each professional directly what they would take responsibility for and what they would not, and record the answer in their words.
Owners assume an appointment covers the whole building, and asking directly is the simplest way to find the boundary.
Ask what conditions each of them would attach before proceeding, including investigation, opening up, or redoing some part of the work already done.
These conditions are the real terms of a takeover, and they vary considerably between people.
Ask whether they have taken on part-finished work before and what they found difficult about it, without expecting reassurance.
The difficulties they name tell you more about your project than any general statement of capability.
Treat caution about somebody else's work as a reasonable professional position rather than as a lack of interest in your project.
Owners sometimes choose the least cautious respondent, which is very rarely the right decision here.
Ask where the boundary between existing work and new work sits, and how that boundary is recorded so everyone works from it.
An undefined boundary becomes a dispute at exactly the point when it is most expensive to resolve.
Ask what information each would need from you before starting, and gather it rather than waiting to be chased.
Delays at the start of a takeover are very often waiting on the owner, and the requests are predictable.
8.Deciding whether to continue or start again
This is an owner decision informed by professional advice, and it is better made deliberately than arrived at by accumulation.
Write down what you actually want from the finished building, separately from what the previous project was trying to achieve.
Owners inherit somebody else's brief without noticing, and it quietly shapes every decision afterwards.
Ask what continuing with the existing work commits you to, in terms of layout, structure and decisions already taken.
Continuing is not neutral. It carries decisions that were made for somebody else's reasons.
Ask what removing part of the existing work would involve, and treat that as a question for the engineer rather than an estimate.
This option is frequently dismissed without being asked about, which is how it goes unconsidered.
What can be removed, and what depends on it, is a matter for a qualified engineer and never for an owner's judgement.
Decide how much genuine unknown the household is willing to live with, and state that before the decision is taken rather than in the middle of it.
This is the real variable in a takeover decision and it is a household matter rather than a technical one.
Record the reasoning behind whichever decision you take, so that it can be revisited deliberately later rather than quietly second-guessed by everybody.
Takeover decisions get questioned repeatedly, and a written rationale makes those conversations much shorter.
Decide how the record will be kept from this point on, so the next owner does not face the position you are in now.
The problem you are solving was created by an absent record, which is the strongest possible argument for keeping one.
Preparation
Documents and information to gather
Having these to hand usually makes the first conversation shorter and more useful.
- Every drawing that exists, including superseded versions, with a note of which the work appears to follow
- All correspondence with the local authority about applications, approvals and notifications for the property
- Any structural, engineering or specialist report, complete with its appendices
- Warranty registrations, product warranties and installation records, with the name each is held in
- Invoices, orders and delivery records, which often name trades no other document records
- A systematic set of photographs of the building as found, before anything is cleared or worked on
- A plan marked with what is concealed and what is unknown
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 you understand was actually built, and where it differs from what was drawn
- Which elements are concealed and which of those could still be seen if opened up
- What paperwork exists, what is missing, and what was confirmed directly with the authority
- Which registrations, warranties or appointments survive the change of hands, confirmed in writing
- How much genuine unknown the household is willing to live with
- The reasoning behind the decision to continue or to start again
Professional review
Questions to discuss with qualified professionals
Bring these to the relevant qualified professional, supplier or authority. Requirements vary by project and location.
- What would you need to see before you would take any responsibility for what is already here?
- Which elements cannot now be verified at all, whatever we open up?
- How much opening up would be involved, and is it exploratory or already known to be extensive?
- What would the consequence be of not opening up, in terms of what nobody could stand behind?
- Where would the boundary between existing work and new work sit, and how is it recorded?
- What conditions would you attach before agreeing to proceed?
- Does the engineering information that exists actually cover what was built?
- What does continuing with the existing work commit us to that we might not choose ourselves?
- What would removing part of the existing work involve?
Blind spots
Commonly overlooked items
- Superseded drawings, which are frequently the ones the work was actually built from
- What the part-built structure has been exposed to since work stopped, particularly over a winter
- That an assurance something was checked before covering is not evidence that it was
- Warranties held in the name of a contractor who has left, which is different from warranties existing
- Names appearing only on invoices, which are sometimes the sole record that a piece of work happened
- Inheriting the previous owner's brief without noticing it was never your own
- That the problem being solved was created by an absent record, which argues for keeping one now
What this checklist does not do
- Nothing here judges whether existing work is sound or acceptable. That belongs entirely to qualified professionals assessing the specific building.
- Only your local authority can confirm the status of anything relating to permissions on a property, whatever paperwork you are shown.
- Whether any warranty, registration, appointment or obligation survives a change of hands is a legal matter for a suitably qualified adviser.
- What can be removed from a part-built structure, and what depends on it, is a matter for a qualified engineer and never for an owner's judgement.
More preparation
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