What the checker actually tells you
The Can It Wait? checker takes a job you're looking at, whether that's a cracked pane, a lifting paving slab or a lawn that's gone thin and patchy, and gives you a plain answer: deal with it now, deal with it within a few weeks, or leave it until a specific point later in the year. Most people who reach it are stuck between two worries: spending money and effort on something that would have sorted itself out, or leaving a small fault to become an expensive one. The urgency checker is built to settle that question quickly, using the kind of reasoning a knowledgeable neighbour would apply if you described the problem over the fence.
How it reaches an answer
You describe what you're looking at and roughly where in the UK you are, and the checker works from patterns that generally hold: how quickly that type of fault tends to get worse, whether the current season makes it more or less urgent, and whether waiting makes the eventual fix harder or more costly. A hairline crack in fence paint behaves very differently from a hairline crack in render, and the tool is weighing that kind of distinction rather than treating every crack the same.
It isn't looking at your actual wall, shed or lawn, so it can give a wrong answer. Two sheds with the same symptom can have different causes depending on age, construction and how sheltered the site is, and the checker has no way to see that. Treat its answer as a sensible starting steer, and use your own judgement, or a professional's, where the stakes are higher than a bit of wasted time.
What "can wait" and "cannot wait" actually mean
These two categories cover different situations, and it helps to know which one you're in before you act.
- Can wait, no harm done: the job will look exactly the same whether you do it this week or next month. Deadheading spent blooms falls here for most of the season; delaying it costs you nothing beyond a slightly untidier border.
- Can wait, but there's a window: the job is fine to leave for now, but there's a point after which it gets harder or more expensive, often tied to the calendar rather than the fault itself. Scarifying a lawn (removing the dead thatch that builds up at soil level) works far better in early autumn or spring than in the depths of winter, so "can wait" here comes with a rough deadline.
- Cannot wait: the fault is actively getting worse, and the cost or risk of waiting rises the longer it's left. Cracked pointing that's letting water into a wall is a common example: the mortar itself is cheap to repair, but the damp it lets in is not.
Jobs that usually fall into "can wait"
- Minor cosmetic damage to fences, sheds or garden furniture that isn't exposed to standing water
- Lawn issues that are seasonal, such as moss appearing after a wet spell
- Deadheading, light pruning and other jobs that affect appearance more than plant health
Where the checker cannot help
The tool works from general patterns, and general patterns don't account for your specific building or garden. A Victorian solid-wall house and a 1990s cavity-wall house respond differently to the same damp symptom, and a garden on heavy clay in the Midlands drains quite differently to one on sandy soil in East Anglia. Where the checker's answer depends on details like these, it will tell you so, and you should weigh local knowledge, or a look from someone qualified, alongside whatever it suggests.
It also won't tell you a risky job is safe to do yourself. Anything involving gas, mains electrics, structural work, roofwork at height, or a suspected fault in the damp-proof course (the horizontal barrier in a wall that stops damp rising from the ground) needs a qualified professional regardless of what the urgency answer says. The checker's job is to tell you how much time you have.
Using the result well
Once you have an answer, the most useful next step is usually to check what else is due around the same time, since jobs rarely arrive one at a time. The monthly guide lists what's typically worth doing in the garden and home right now, and it's a quick way to see whether the job you've just checked fits into a wider list you should be working through anyway.
If the answer involves spending money, whether on materials, a repair or a replacement, it's worth running the decision through the pre-spend checklist before committing. An urgency answer tells you when; the checklist helps with whether the spend is the right one at all.
When to skip the checker altogether
Some situations don't need an urgency judgement because the answer is already clear. A gas smell, a live wire, a wall that's visibly moving, or a roof that's shedding tiles in a way that could hurt someone below all call for a professional straight away. Where you're unsure whether a job belongs to you or to a tradesperson, the home maintenance and shed and outbuildings guides set out which jobs are generally suited to a capable adult with basic tools and which ones aren't, and that distinction matters more than how urgent the fault happens to be.