PSCS and PSDP in Ireland — Mandatory Roles Under SHWW 2013, Who Takes Them, and When
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PSCS (Project Supervisor Construction Stage) and PSDP (Project Supervisor Design Process) are mandatory under the Safety, Health and Welfare at Work (Construction) Regulations 2013 (SI 291/2013). PSDP appointed before design begins. PSCS appointed before construction starts. Both must be competent and have the resources to coordinate safety during their respective phases. On a self-build, you can take the PSCS role yourself (on direct-labour builds) or the main contractor takes it. PSDP is usually the architect. The HSA (Health and Safety Authority) can visit any site and issue improvement notices or closure orders for non-compliance. Most Irish self-builds use the architect as PSDP and the main contractor as PSCS — the standard, low-risk setup.
TL;DR
PSCS and PSDP are mandatory under the Safety, Health and Welfare at Work (Construction) Regulations 2013 (SI 291/2013).
PSDP appointed before design begins. PSCS appointed before construction starts. Both must be competent and have the resources.
On a self-build, you can take the PSCS role yourself (on direct-labour builds) or the main contractor takes it. PSDP is usually the architect.
When this matters most
You're at the pre-construction phase and need to appoint the PSCS and PSDP.
When this doesn't apply
Both are appointed and the Commencement Notice is lodged.
Frequently asked questions
What is a PSCS?
Project Supervisor Construction Stage. Required by the SHWW (Construction) Regulations 2013. Responsible for safety and welfare on site during the build. Must be appointed before construction starts.
What is a PSDP?
Project Supervisor Design Process. Required by the SHWW (Construction) Regulations 2013. Responsible for coordinating safety during design. Must be appointed before design begins. Usually the architect.
Can I be my own PSCS?
Yes, on a self-build. You take on the duty. Most main contractors will require you to appoint a professional PSCS if you are direct-labour building.
Sources
Health and Safety Authority, PSCS / PSDP duties. https://www.hsa.ie/
Frequently asked questions
What is a PSCS?
Project Supervisor Construction Stage. Required by the SHWW (Construction) Regulations 2013. Responsible for safety and welfare on site during the build. Must be appointed before construction starts.
What is a PSDP?
Project Supervisor Design Process. Required by the SHWW (Construction) Regulations 2013. Responsible for coordinating safety during design. Must be appointed before design begins. Usually the architect.
Can I be my own PSCS?
Yes, on a self-build. You take on the duty. Most main contractors will require you to appoint a professional PSCS if you are direct-labour building.