Ask any project manager where the last-minute chaos comes from, and lighting shows up far more
often than its budget share suggests. It is a modest line item — until the fixtures arrive late,
or the wrong colour, or the site isn’t ready for them, and suddenly a small item is holding up
handover while everyone watches. Lighting rarely causes delays because it is hard. It causes
delays because it is planned last.
The Five Ways Lighting Derails a Schedule
1. Long lead times, ordered late. Specialised fixtures — high masts, sports
floodlights, large quantities — can take weeks to manufacture and deliver. Ordered as an
afterthought, they become the critical path.
2. Late specification changes. A CCT or fixture change after ordering means
re-procurement and re-work — expensive and slow.
3. Site not ready. Poles need foundations cured; fittings need ceilings
closed and power available. Deliver before the site is ready and material sits at risk; deliver
after and the trade queue jams.
4. Coordination gaps. Lighting touches electrical, civil, ceiling and
facade trades. When nobody owns the interfaces, fixtures arrive with nowhere to go.
5. Missing documentation. On public or certified projects, absent BIS/LM-79
/LM-80 papers can stall inspection and sign-off even after everything is installed.
A Lighting Timeline That Works
| Stage | Lighting Action |
|---|---|
| Design | Lock specs: lux, CCT, CRI, fixtures, controls, certifications |
| Pre-procurement | Confirm lead times; get a lighting design/simulation |
| Procurement | Order long-lead items early; freeze the spec |
| Pre-installation | Confirm site readiness, power, foundations, access |
| Installation | Sequence with other trades; stage deliveries |
| Commissioning | Test, aim, set controls; collect all documentation |
| Handover | As-builts, warranties, O&M manuals, spares |
Order Long-Lead Items First, Not Last
The single highest-leverage habit: identify long-lead lighting (high masts, sports floods,
custom or bulk fixtures) at design stage and order it early against a frozen spec. It moves the
item off your critical path entirely.
Choose a Supplier Who Reduces Your Risk
A supplier who provides a lighting design, commits to realistic lead times, delivers in
sequenced batches, and hands over complete documentation removes several of your delay risks at
once. One partner who understands project delivery beats three cheaper vendors you have to
chase.
Pre-Handover Checklist
- All fixtures installed, aimed and tested
- Controls / CCMS configured and
demonstrated - Lux and uniformity verified against the design
- BIS, LM-79, LM-80 and warranty documents collected
- As-built drawings and O&M manuals handed over
- Recommended spares supplied
Frequently Asked Questions
Why does lighting delay construction projects?
Usually long lead times ordered late, last-minute spec changes, site not being ready, poor
trade coordination, or missing certification documents.
When should lighting be ordered on a project?
Long-lead items should be identified at design stage and ordered early against a frozen
specification, not left to the end.
What lighting documents are needed at handover?
BIS and CRS certificates, LM-79 and LM-80 reports, warranties, as-built drawings, O&M
manuals and spares.
How can a supplier reduce project risk?
By providing a lighting design, honest lead times, sequenced deliveries and complete
documentation for smooth inspection and sign-off.
Reway supports project teams with lighting designs, reliable lead times, sequenced delivery
and complete documentation across our full
range. Plan your project lighting with us →
