Before any substantive work begins on a UK construction site, six things must be in place: a site-specific Construction Phase Plan (CPP) available on site, welfare facilities fully operational, a documented site-specific induction delivered to every worker, underground and overhead services located and made safe, the perimeter secured with controlled access, and a traffic management plan confirmed. Under CDM Regulations 2015, failing to have a site-specific CPP on site breaches Regulation 15 before a single tool is lifted.
The absolute must-dos before substantive work starts:
Pro Tip: The site induction must name the actual muster point location, the named first aider, and the named fire marshal. Generic placeholders are non-compliant; HSE auditors will mark an induction non-compliant if it tells workers to “ask the site manager” for emergency details.
Pre-start preparation is where most site-setup failures originate. Rushing mobilisation without signed-off drawings, confirmed appointments, or delivered welfare units creates compliance gaps that are expensive to close once workers are on site.
Pro Tip: Carry out a short pre-start site walk with the client or architect before mobilisation day. Record confirmations on the CPP cover sheet. It takes thirty minutes and prevents a week of rework.
| Pre-start sign-off | Responsible person | Evidence required |
|---|---|---|
| Planning permission confirmed | Project Manager | Copy on site file |
| Section 61 consent (if applicable) | Principal Contractor | Signed consent letter |
| Insurance evidence in place | Principal Contractor | Certificate on site |
| Utility drawings obtained | Site Manager | Drawings logged in CPP |
| CAT/Genny survey complete | Competent surveyor | Signed survey record |
| Welfare units ordered and delivery confirmed | Site Manager | Delivery confirmation |
| Duty-holder appointments confirmed | Principal Contractor | Site details sheet signed |

A well-structured pre-start site preparation process reduces the risk of day-one delays significantly. For projects involving demolition or strip-out as enabling works, the site clearance readiness guide covers the additional pre-start checks that apply.
Day one on site is not the time to improvise. Every item below must be verified as operational before the workforce starts substantive work. HSE guidance is clear: welfare facilities must be fully operational before workers carry out substantive work, not promised for later in the week.
Pro Tip: Modern electric welfare units and remote generator management reduce fuel-handling risk and lower emissions on longer projects. Specifying these at procurement stage avoids retrofitting mid-project.
| Day-one setup item | Status check | Responsible person |
|---|---|---|
| Perimeter fencing and entry point | Erected and locked | Site Manager |
| Site signage and rules board | Displayed at entry | Site Manager |
| Welfare: toilets and handwash | Operational and clean | Welfare supervisor |
| Drinking water supply | Available and labelled | Site Manager |
| Rest area | Heated and furnished | Welfare supervisor |
| PPE store | Stocked and accessible | Site Manager |
| Site-layout diagram | Printed and posted | Site Manager |
A site induction must cover at minimum twelve site-specific items: site boundaries, identified hazards, control measures, exact muster point location, named first aider, named fire marshal, accident reporting procedure, and permit-to-work triggers. Every item must contain actual site information, not a placeholder.
Permit-to-work regimes apply to hot works, confined space entry, excavation near services, and work at height. The permit must name the permit holder and the authorising person; no work in those categories starts without a signed permit.
RAMS must be site-specific, approved by a competent person, and held on site before the relevant work package begins. A simple RAMS register prevents work starting without approval.
The CPP must be site-specific, live, and physically available on site at all times. Regulation 12 of CDM 2015 requires the Principal Contractor to plan, manage, and monitor the construction phase using the CPP. Auditors expect version control, issue dates, and records of briefings when changes are made. A CPP that does not reflect current site conditions is treated as non-existent.
Pro Tip: Deliver the day-one induction with a paper site map and a digital copy. Record every signature. Avoid any statement that asks workers to “ask the site manager” for emergency details — name the person and the location explicitly.
Vehicle and pedestrian conflicts are among the most frequent causes of serious injury on construction sites. A traffic management plan must be in place before plant arrives, not drafted on the morning of the first delivery.
For sites with public highway interactions, the roadworks safety checklist covers the additional controls required when works affect the carriageway or footway.
Pro Tip: Require all large deliveries to pre-book through a single site logistics coordinator. Uncoordinated deliveries on day one cause congestion, banksman conflicts, and programme delays that compound through the week.
Waste management and pollution prevention are planning conditions on most UK projects and legal duties under environmental legislation regardless. Failing to segregate waste or protect drainage from silt run-off can trigger enforcement action and delay programme.
| Waste stream | Container type | Responsible person | Consignment note retention |
|---|---|---|---|
| General waste | Skip (mixed) | Site Manager | 2 years |
| Timber | Dedicated skip | Site Manager | 2 years |
| Metal | Caged skip or merchant collection | Site Manager | 2 years |
| Hazardous waste | Licensed container | Principal Contractor | 3 years |
Underground and overhead services represent the highest-consequence hazard in groundworks. No ground penetration should occur without a completed CAT and Genny survey and a signed permit-to-dig. For projects involving deep excavation, the excavation safety checklist provides the detailed controls that apply below 1.2 metres.
Pro Tip: Record all utility scan results and isolation details in the CPP and update as-found service locations on the site-layout drawing. A discrepancy between the drawing and reality on site is an audit finding.
Projects meeting the notification threshold (more than 500 person-days or 30 working days with more than 20 workers simultaneously) must be notified to HSE by the Principal Contractor before the construction phase begins. The F10 notification must be displayed on site.
| Document | Where stored | Owner | Retention period |
|---|---|---|---|
| Construction Phase Plan | Site cabin and digital system | Principal Contractor | Project life plus 3 years |
| Induction records | Site file | Site Manager | Project life plus 3 years |
| RAMS register | Site cabin | Site Manager | Project life plus 3 years |
| Permits log | Site cabin | Site Manager | Project life |
| F10 notification | Displayed on site | Principal Contractor | Project life |
| Waste consignment notes | Site file | Principal Contractor | 3 years |
The CPP is a living document that must reflect the site as it actually is. An out-of-date CPP is a compliance liability, not a minor administrative oversight.
Pro Tip: Keep a short corrective-action log linked to the CPP version history. Record the issue, the action taken, who closed it, and the date. Auditors can verify closed actions in minutes; it is often the quickest audit win on site.
| Audit point | Who audits | Frequency | What to verify |
|---|---|---|---|
| Day-one sign-off | Site Manager | Once, before work starts | All pre-start items complete |
| Weekly check | Supervisor | Weekly | Welfare, permits, signage, inductions |
| Milestone audit | Principal Contractor | At each phase change | CPP current, temporary works signed off |
| Post-incident review | Principal Contractor | After any incident | CPP updated, briefing recorded |
Print this table, laminate a copy for the site office, and keep a second copy in the welfare cabin. Use it as a day-one sign-off record and retain it in the site file as evidence for client handover or HSE inspection.
| Item | Category | Signed off | Date |
|---|---|---|---|
| CPP prepared, site-specific, on site | Pre-start | ||
| Duty-holder appointments confirmed and displayed | Pre-start | ||
| Planning conditions and Section 61 confirmed | Pre-start | ||
| Insurance evidence on site | Pre-start | ||
| Utility drawings obtained and logged | Pre-start | ||
| CAT/Genny survey complete | Pre-start | ||
| Perimeter fencing and controlled entry erected | Day one | ||
| Site signage and rules board displayed | Day one | ||
| Welfare operational (toilets, handwash, water, rest area) | Day one | ||
| Site-layout diagram posted | Day one | ||
| Site-specific induction delivered and signed | Safety | ||
| RAMS register in place | Safety | ||
| Permit-to-work regime established | Safety | ||
| Traffic management plan confirmed | Logistics | ||
| Waste streams defined and skips positioned | Environment | ||
| Pollution-prevention measures installed | Environment | ||
| Permit-to-dig issued after survey confirmation | Utilities | ||
| F10 notification submitted (if threshold met) | Documentation |
Store a PDF version in the project digital system alongside the CPP. At client handover, the signed checklist demonstrates that the site was opened compliantly and that controls were in place from day one.
A compliant UK construction site setup requires the CPP on site, welfare operational, and a site-specific induction delivered before any substantive work begins.
| Point | Details |
|---|---|
| CPP is a legal requirement | The site-specific CPP must be on site and available before substantive work starts, per Regulation 15. |
| Welfare before work | Toilets, handwash, drinking water, and a rest area must be operational on day one, not promised for later. |
| Induction must be site-specific | Name the actual muster point, first aider, and fire marshal; generic placeholders are non-compliant. |
| Audit at every milestone | Update the CPP and record briefings at phase changes; version control is what auditors check first. |
| Gcscontractors for site setup | Gcscontractors delivers CDM-compliant site setup, enabling works, and groundworks across Cambridge and East Anglia. |
The checklist is only as good as the person walking the site with it. What separates a compliant opening from a reactive one is the sequence in which items are checked and the discipline with which evidence is collected.
The sequence Gcscontractors uses on pre-start walks is deliberate: perimeter first, welfare second, services third, then inductions and permits. Starting at the perimeter confirms the site boundary is secure before anyone else arrives. Moving to welfare confirms it is operational, not just delivered. Checking service markers and isolation records before any plant is positioned prevents the most serious early-programme risk. Only then does the induction make sense, because the site is actually ready to describe accurately.
Evidence collection matters as much as the walk itself. Photograph the muster point sign, the welfare hook-up, and the service markers with their GPS coordinates or grid references, then attach those images to the CPP update. An auditor who sees dated photographs alongside version-controlled CPP entries has everything they need. A site that relies on memory and verbal confirmation does not.
The pre-start walk should include the client or architect representative wherever possible. Their sign-off on the CPP cover sheet at that stage removes ambiguity about site constraints and client-specific requirements before the workforce arrives.
Gcscontractors delivers the full pre-start package for building contractors and developers across Cambridge and East Anglia: site setup and enabling works, groundworks, drainage, strip-out, and temporary works, all prepared to CDM and HSE standards with audit-ready CPPs and RAMS from day one.

For projects requiring groundworks and civil engineering as part of site preparation, the Cambridge groundworks service covers foundations, drainage, and roadworks under a single contract. Every project begins with a structured pre-start site walk, a site-specific CPP, and a welfare and security package confirmed before the workforce mobilises.
Contact Gcscontractors to arrange a pre-start site survey or to request a printable site setup checklist PDF tailored to your project.
The sources below are the primary references for CDM compliance, welfare requirements, and site induction standards in the UK.
Regulation 15 reminder: the CPP must be site-specific, available on site, and kept live throughout the construction phase. Welfare facilities must be operational before substantive work begins. Both requirements are audited by HSE inspectors and client compliance teams; neither is discretionary.