Some owners control time with a handful of contractual milestones, others with a fully linked programme. They fail in different ways and suit different projects.
There are two practical ways to control time on a build. You can write a small number of dated milestones into the contract and attach consequences to them, or you can require a fully linked programme and manage the project through its logic. Large projects use both. Owners abroad on a single building usually have to choose where to put their limited attention.
Contractual milestones at a glance
A short list of dated events written into the contract: enclosure complete, services energised, practical completion. Each one carries a consequence, usually a payment release or a deduction. The contractor decides how to sequence work internally, and you measure only the arrival of each milestone.
Linked activity logic at a glance
A programme where every activity has a duration, predecessors and successors, so the model calculates the completion date and the critical path. Progress is measured activity by activity, the programme is updated monthly, and delay is assessed by how events move the network.
What it takes to administer
Contractual milestones: Little technical capacity. You check whether a defined physical state has been reached on a date.
Linked activity logic: A supervising engineer or project manager who can read and challenge a programme every month.
How early it warns you
Contractual milestones: Late. A missed milestone tells you about a problem that has already happened.
Linked activity logic: Early. A slipping activity with no float shows up in the update before the milestone is due.
How disputes are resolved
Contractual milestones: By reference to a date and a physical state, which is simple but blunt about causes.
Linked activity logic: By analysing the network, which can apportion cause between the parties but needs evidence.
How it handles change
Contractual milestones: Poorly. Every variation raises an argument about whether the milestone date still applies.
Linked activity logic: Well, because a change can be inserted into the network and its effect on completion calculated.
What the contractor can hide
Contractual milestones: Internal sequence problems, until the milestone is missed and recovery is expensive.
Linked activity logic: Less, provided you check the logic. Padding hides inside long activities if you do not.
Cost of the control itself
Contractual milestones: Almost nothing beyond drafting the clauses carefully.
Linked activity logic: A real monthly cost in consultant time, which is only worth paying if you act on the output.
Effect on the contractor relationship
Contractual milestones: Clean while things go well, adversarial the moment a date is missed.
Linked activity logic: More collaborative, because problems are discussed while they are still small.
When contractual milestones wins
- A single building with a straightforward sequence and one main contractor.
- An owner with no technical adviser who needs a small number of unambiguous tests.
- Projects where a funder or a tenant needs specific dates rather than internal detail.
- Contracts where you want consequences that are simple to apply without expert analysis.
When linked activity logic wins
- Projects with several contractors or trade packages running in parallel.
- Builds with long lead imported items where sequence matters more than effort.
- Owners who expect changes and want each one priced in time as well as money.
- Situations where you may need to prove cause and effect in a dispute.
How to decide
Use milestones as the contractual backbone on any project, because you need consequences attached to dates. Add linked activity logic when the project has parallel packages, imported long lead items or a real chance of variations, and when you are prepared to pay someone to read the programme monthly. Buying programme control and then not reading the output is the worst of both approaches.
The evidence that milestones are working is a signed statement of the physical state reached on the date, with photographs and test records. The evidence that programme logic is working is a monthly update showing actual dates, current critical path and any movement in forecast completion, with the reason for the movement named. If your monthly pack contains neither, you are not controlling time, you are being told about it.
Domira designs, builds and manages projects across Saudi Arabia for owners who are based abroad: land appraisal, feasibility, design, construction, handover and asset management under one accountable contract. Send us the plot or the brief and Domira will put the numbers in front of you before you commit.
Frequently Asked Questions
Should a construction contract include interim milestones or only a completion date?
Interim milestones are usually worth including because a single completion date gives you no leverage until the end, when recovery options are gone. Two or three well chosen milestones tied to payment give early signals. Keep them few and physically unambiguous, since a milestone that is open to interpretation creates more argument than it prevents.
Can an owner deduct money for a missed interim milestone?
Only if the contract says so and says how. Consequences for interim milestones are usually structured as withheld payment or as a trigger for a recovery programme rather than as damages, because damages normally attach to final completion. How far any deduction is enforceable in Saudi Arabia is a question for a licensed adviser on your specific wording, not something to assume from another market.
Who should prepare the construction programme, the owner or the contractor?
The contractor should prepare it, because they carry the means and method. The owner sets the requirements: level of detail, software, activity duration limits, inclusion of procurement and of owner obligations, and update frequency. Writing those requirements into the contract is the owner main lever, since an owner drawn programme transfers responsibility for the sequence in a way most owners do not intend.
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