Construction delays almost always creep up on you, rather than suddenly materialising all at once. It’s usually a slow build up of small mistakes, poor coordination and sluggish decision making that does it. By the time things start to slip, costs are piling up, subbies are getting frustrated, and clients are breathing down your neck about the completion date.
Top contractors treat scheduling as a live, breathing part of the project management process, rather than just a static document that gets thrown together at the start of the job. Lots of firms are also investing in better communication and accountability tools – think Quotor type platforms – to keep their teams on the same page and avoid those unnecessary delays.
These are nine of the most common scheduling mistakes that cause delays – and how the top performers avoid them.
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1. Putting Your Head In The Sand And Creating An Unrealistic Program
Many project schedules are based on ideal conditions rather than what’s actually going on at site level. You know, things like the weather, how long it takes to get materials, access issues, inspections, labour availability, and design changes. These are all too often underestimated.
An unrealistic schedule is a recipe for disaster – it creates pressure from day one and encourages people to just react to things as they come up, rather than thinking things through.
How top contractors avoid it:
They create programmes that use realistic production rates, known constraints, contingency buffers and lessons learned from previous projects to inform them.
2. Failing to Focus On The Key Tasks
Not every delay is going to scupper your whole project. There are some activities that are critical to getting the job done on time, but all too often teams are treating every little task with equal importance.
Without a clear view of what’s really critical, you end up wasting your management team’s time on non-essential stuff while the real issues grow and grow.
How top contractors avoid it:
They take a close look at the critical path activities every single week, and make sure those are the ones they’re focusing on.
3. Poor Co-ordination Of Sub-Contractors
Even the best individual trades can cause delays if they’re not properly co-ordinated. One trade that’s running behind can throw the whole rest of the job into chaos.
You’ve got multiple trades competing for access, labour, workspace – the list goes on.
How top contractors avoid it:
They run regular look-ahead planning meetings, agree interfaces and stages early, and make each trade responsible for delivering their bit on time.
4. Not Treating Long-Lead Items With The Urgency They Deserve
Schedules come a cropper when long-lead time items – things like steel, electrical gear, glazing etc – haven’t been properly accounted for.
These types of items can create massive programme risk if they don’t turn up on time.
How top contractors avoid it:
They link up their procurement schedules directly to the main programme, and track things like fabrication, shipping and getting the goods on site.
5. Not Getting The Design Feedback You Need From Site
Projects grind to a halt when site teams are waiting for feedback from designers or consultants.
Short delays in this area can create all sorts of problems down the line.
How top contractors avoid it:
They keep clear records of the RFI’s (requests for information) they send out, and make sure design teams and clients are aware of when decisions need to be made.
6. Not Keeping An Eye On Productivity
A schedule may look healthy on paper, but if actual output is not keeping pace then you’re in for a world of trouble.
Things like low productivity rates, absenteeism, congestion on site or rework can all eat away at progress long before it’s become a major issue.
How top contractors avoid it:
They track installed quantities, crew output and weekly progress – not just scheduled dates.
7. Not Keeping A Close Eye On Changes
Variations to the original scope are always going to cause problems – it’s just a matter of how much they’re going to knock the schedule off track.
But all too often changes aren’t properly assessed for their impact, and the schedule gets left behind.
How top contractors avoid it:
They assess the time and cost impact of any changes before they’re approved, and make sure the programme gets updated straight away.
8. Not Updating The Schedule Regularly Enough
A schedule that’s only updated once a month is pretty much out of date the minute it’s been written.
Fast-moving projects need current information if you’re going to make the right decisions.
How top contractors avoid it:
They update their schedules every week, and use short look-ahead plans to keep everyone on the same page.
9. Putting Scheduling In The Hands Of One Person
When only one person is responsible for the programme, you’re asking for trouble. Effective schedules need buy-in from the whole team – project managers, supervisors, engineers, procurement teams and subbies.
How top contractors avoid it:
They make scheduling an integral part of the operational culture – so everyone knows what’s coming up and what the constraints are.
Final Thought
Construction delays are often predictable before it’s too late. Firms that do well don’t rely on wishful thinking – they rely on proper planning, fast co-ordination and constant schedule control.
The best programmes aren’t the most detailed ones. They’re the ones that are accurate, actively managed and understood by the people delivering the work.
