Decide early which runs are permanent and which have to move. That single decision does most of the work. Permanent boundary runs go in once, on the final alignment, and are never touched again. Relocatable internal runs go on bolted base plates or driven posts so they can be lifted and re-set as stages complete. Staged handover sections are installed to final specification ahead of practical completion for each stage, so the handover is not waiting on a fence. And access is separated deliberately: construction traffic, sales or display access, and any operating tenancy each want their own gated entry rather than sharing one and arguing about it.
Sometimes the honest answer is hire, not install. Where the whole perimeter is short-term and will not be reused, hired temporary fencing is usually the cheaper answer, and it is worth saying so rather than selling a permanent fence for a six-month job. The rough dividing line is whether the perimeter is needed for under roughly six to twelve months and whether the line becomes a final boundary. Beyond that, installing is generally better value — and where a run becomes the permanent boundary, installing it once to final specification beats building it twice.
Fencing sits on the critical path twice, and the second time is worse. Once at establishment, when nothing can start until the site is secured, and again just before each handover, when every other trade is also finishing. Quoting itemised by stage is what lets fencing be programmed rather than reacted to — it maps onto your programme and your progress claims instead of arriving as a single lump that has to be apportioned afterwards.
