Contract guide · RIAI

RIAI contract administration and key notice requirements.

How RIAI contracts work, where they are used, and what contractors and employers each need to watch for, including the new claim rules in the 2025 form.

RIAI obligations

The RIAI 2025 form brings strict claim deadlines.

The 2025 form from the Royal Institute of the Architects of Ireland introduces strict notice requirements for Contractor claims. Earlier editions are often amended with time bars of their own.

Notice of claim

Notify within 20 working days.

Under clause 6.11, the Contractor gives the Architect notice of a claim as soon as practicable, and no later than 20 working days after becoming aware, or when they should have become aware, of the event.

Full details

Detail it within 25 more.

Full details of the claim follow within a further 25 working days. Where the event is ongoing, interim details are due every fortnight.

Time bars

Late notice can cost the claim.

Miss the notice requirements and the Employer is released from liability for the claim. On amended 2017 forms, bespoke time bars are common, so every clock matters.

Where RIAI is used

The standard for private building in Ireland.

RIAI forms are widely used for privately funded building work in Ireland, with the Architect administering the contract. Public sector work usually uses the PWC instead.

Commercial offices
Residential and apartments
Retail and hospitality
Fit-out and refurbishment
Private education and healthcare
Contractor side

Contractor

Benefits
  • ✓
    A form Irish clients, architects and quantity surveyors already know well.
  • ✓
    Extensions of time for listed delay events, with money where the Employer's side causes the delay.
  • ✓
    Regular interim certificates from the Architect.
  • ✓
    Unamended, the form is seen as fairly balanced between the parties.
Watch out for
  • !
    Under the 2025 form, notice is due within 20 working days and full details within a further 25.
  • !
    Ongoing events need interim details every fortnight.
  • !
    Some delay events, such as exceptional weather, give time but not money.
  • !
    Amended 2017 forms often add strict conditions precedent.
Client side

Employer and Architect

Benefits
  • ✓
    Late claims under the 2025 form release the Employer from liability.
  • ✓
    Fortnightly updates on ongoing events show exposure as it builds.
  • ✓
    The Architect administers the contract and certifies payment.
  • ✓
    A familiar form keeps tendering and negotiation simpler.
Watch out for
  • !
    Architect's instructions and late information can give the Contractor time and money.
  • !
    Delays caused by the Employer, or others it engages, can do the same.
  • !
    Any agreed change to claim timeframes must be in writing and tracked.
  • !
    Heavy amendments can be contested and add negotiation time.

RIAI questions

What is an RIAI contract?

RIAI contracts are standard building contracts published by the Royal Institute of the Architects of Ireland. They are used mainly on privately funded building work, with the Architect administering the contract.

What is the difference between the Yellow and Blue forms?

The Yellow form is used where the contract includes a bill of quantities. The Blue form is used where it does not.

What changed in the RIAI 2025 contract?

Among other changes, clause 6.11 introduces strict claim notice rules. Notice is due within 20 working days of becoming aware of the event, full details within a further 25 working days, and interim details every fortnight for ongoing events. Late claims release the Employer from liability.

Who administers an RIAI contract?

The Architect administers the contract on the Employer's behalf, issuing instructions, interim certificates and decisions on extensions of time.

What are the RIAI 2025 claim notice periods?

Notice of a claim is due as soon as practicable and no later than 20 working days after the Contractor becomes aware, or should have become aware, of the event. Full details follow within a further 25 working days, with interim details every fortnight if the event is ongoing.

What happens if notice is late under the RIAI 2025 form?

The Employer is released from liability for the claim. The parties can agree in writing to adjust the timeframes for a particular claim.

Contract terms vary by edition and are frequently amended. Always check the contract and any project-specific amendments that apply. This guide is general information, not legal advice.

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