# Cdm 2015 Check > Check a UK construction project against CDM 2015 duty-holder requirements and determine F10 notifiability. Use when the user asks about "CDM 2015", "CDM check", "F10", "notifiable project", "duty holders", or is scoping a new project and needs the CDM picture. Outputs duty-holder roles, F10 y/n with reasoning, pre-construction info checklist, construction phase plan checklist. - Skill: `jody09-dotcom/cdm-2015-check` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add jody09-dotcom/cdm-2015-check` - Raw SKILL.md: https://api.skillmd.com/api/skills/jody09-dotcom/cdm-2015-check/raw - Safety review: pending - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Coding & Dev Tools - Author: Jody09-dotcom (https://skillmd.com/u/jody09-dotcom) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/jody09-dotcom/cdm-2015-check --- # CDM 2015 Check This skill produces a one-page CDM 2015 brief for a UK construction project. It checks F10 notifiability, lists the duty-holders that apply, and produces Pre-Construction Information (PCI) and Construction Phase Plan (CPP) checklists. Advisory only. HSE is the authoritative source. For formal compliance, engage a qualified CDM coordinator or chartered construction professional. ## When to Use - New project scoping, before tender or contract signing - Tender stage, checking what the client must provide - Due-diligence review on a project you are about to take on - Client education, explaining CDM duties to a commercial or domestic client - Checking F10 notifiability for a project you are mid-way through planning ## Workflow **Phase 1, ask project facts.** - Project description and scope - Duration in working days (elapsed) - Peak workforce on site at any one time - Client type: commercial, public sector, domestic (i.e. private householder for their own dwelling) - Is there more than one contractor on site (including subbies)? Yes/No - Location and environmental factors (live building, public nearby, rail/road adjacency) **Phase 2, apply F10 notifiability test.** Under CDM 2015 Regulation 6, a project is notifiable to HSE via Form F10 if either: - It is expected to last longer than 30 working days AND have more than 20 workers working simultaneously at any point, OR - It is expected to exceed 500 person-days. If either threshold is met, F10 notification is required. The client is the duty-holder for submitting the F10, but in practice the Principal Designer or Principal Contractor often prepares it. Reference `references/cdm-2015-duty-holders.md` for the exact HSE wording and guidance. **Phase 3, list duty-holders.** Apply the CDM 2015 roles: - **Client** (always). Domestic clients: their duties pass to the contractor (single-contractor) or Principal Contractor (multi-contractor). Commercial clients: full duties apply. - **Principal Designer**. Required when more than one contractor is on site. Appointed in writing by the client. - **Principal Contractor**. Required when more than one contractor is on site. Appointed in writing by the client. - **Designers**. Anyone preparing or modifying a design, including temporary works designers and specifier-subcontractors. - **Contractors**. Anyone managing or carrying out construction work. - **Workers**. Operatives on site. For domestic clients, note the pass-through: duties do not disappear, they move to PD/PC or sole contractor. **Phase 4, produce PCI and CPP checklists.** Pre-Construction Information (PCI): what the client provides to designers and contractors before work starts. Construction Phase Plan (CPP): what the Principal Contractor (or sole contractor) produces before work starts on site. **Phase 5, present result.** Use the output template below. Single-page brief. Short sentences. ## Output Template ```markdown # CDM 2015 Project Brief **Project:** {name} **Client type:** {Commercial / Public sector / Domestic} **Duration (working days):** {n} **Peak workforce:** {n} **More than one contractor:** {Yes / No} **Prepared:** {YYYY-MM-DD} ## F10 Notifiable? {Yes / No} Reason: {Threshold calculation, e.g. "Duration 45 working days with peak 24 workers on site, exceeds the 30-day AND 20-workers test. F10 required."} ## Duty-Holders | Role | Who | Key duties (summary) | |------|-----|----------------------| | Client | {name} | Provide PCI. Appoint PD and PC in writing. Ensure adequate time and resource. | | Principal Designer | {name / "not required, single contractor"} | Plan, manage, coordinate H&S in pre-construction phase. Prepare PCI. | | Principal Contractor | {name / "not required, single contractor"} | Plan, manage, coordinate H&S in construction phase. Produce CPP. | | Designers | {list} | Design to eliminate/reduce risk. Provide information on residual risks. | | Contractors | {list} | Plan, manage, monitor their own work. Produce RAMS. | | Workers | n/a | Take care of own safety. Report risks. Cooperate. | ## Pre-Construction Information (PCI) Checklist - [ ] Project description, scope, and programme - [ ] Client's considerations and management requirements - [ ] Existing site information (drawings, surveys, services) - [ ] Asbestos survey (Refurbishment/Demolition where disturbing fabric) - [ ] Ground conditions and contamination reports - [ ] Structural information for the existing building (where relevant) - [ ] Site hazards (overhead lines, buried services, adjacent occupants, restricted access) - [ ] Welfare requirements - [ ] Programme and key dates - [ ] Procurement route and contractor list (where known) - [ ] Design risk register from the design team - [ ] Information for the CPP ## Construction Phase Plan (CPP) Checklist - [ ] Description of the project and programme - [ ] Management arrangements and responsibilities - [ ] Key dates and phasing - [ ] Arrangements for managing the significant risks identified in PCI - [ ] Site rules and induction process - [ ] Traffic management plan - [ ] Welfare provision (toilets, drying room, rest facility, drinking water) - [ ] First aid and emergency arrangements - [ ] Fire safety plan - [ ] RAMS for high-risk works (work at height, excavations, lifting, hot works, etc.) - [ ] Arrangements for monitoring and review - [ ] Asbestos management plan (where applicable) ## Notes and Escalations {Free-text notes. Items the client needs to address. Any gaps that need competent-person input.} ``` ## References - `references/cdm-2015-duty-holders.md`, full duty-holder table, F10 thresholds, HSE L153 pointer ## Disclaimer Advisory only. HSE is the authoritative source for CDM 2015 compliance. This brief is a starting point for discussion with a qualified CDM coordinator, chartered construction professional, or competent person. It does not replace formal appointments in writing, formal PCI, or a formal CPP. The skill does not file F10 with HSE. The client (or their appointed PD/PC acting on their behalf) is responsible for F10 submission at https://notifications.hse.gov.uk/fod/.