If you've never had building or excavation work happen near your property before, "dilapidation report" might be a new term. It's a fairly simple idea once you understand it, and it's one of those things that's far more useful arranged in advance than after the fact.
What it actually is
A dilapidation report is a detailed, photographed record of a property's existing condition, taken before nearby construction, excavation, or demolition work begins. It covers things like structural condition, external surfaces, fences and retaining walls, and internal ceilings and walls — essentially a dated snapshot of "here's what this property looked like before the work next door started."
Why the timing matters
The entire value of a dilapidation report depends on it being done before the work starts. If cracks or damage show up once excavation or piling begins nearby, the question that always comes up is: was that already there, or did the works cause it? Without a "before" record, that question usually has no clear answer — and disputes over who's responsible for the damage can drag on. With one, there's a dated, photographed reference to settle the question quickly.
Who actually needs one
There are two sides to this, and both benefit.
Homeowners near upcoming works — if a neighbour is about to start excavation, piling or demolition, a dilapidation report protects you. If anything changes about your property once the work starts, you've got independent evidence of what it looked like beforehand.
Builders and developers — if you're the one about to start work near existing homes, getting dilapidation reports done on neighbouring properties protects you too. An independent, dated record that everyone can rely on heads off disputes before they start, rather than leaving you to argue after the fact.
What happens if you skip it
Nothing happens immediately — plenty of construction projects go ahead without one nearby. The risk only shows up if something does go wrong. At that point, without a dilapidation report, you're relying on memory, guesswork, and goodwill to sort out what was already there versus what changed. That's a difficult position for everyone involved, and it's entirely avoidable with a bit of forward planning.
Getting one sorted
If you know work is coming — whether it's your own project or something happening next door — the right time to act is now, before anything starts. It's a straightforward booking, and it's the kind of thing that costs very little upfront compared to the cost of an unresolved dispute later.