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Declared

CRO company 161581

Tetra Tech Ireland LIMITED

Tetra Tech Ireland LIMITED is company 161581 on the CRO register, with its registered office in Dublin. It is named as a supplier on 59 published public contract awards, from 29 public bodies, most often Health Service Executive (HSE). Awards where it is the only named supplier total €620.9M. The latest is dated 5 October 2026.

Company number
161581
Status
Normal
Type
LTD - Private Company Limited by Shares
Registered
1990-07-11
Registered office
WEST PIER BUSINESS CAMPUS, OLD DUNLEARY ROAD, DUN LAOGHAIRE CO. DUBLIN, DUN LAOGHAIRE,DUBLIN
Latest accounts made up to
2025-09-30
Last annual return
2026-06-30
Next annual return date
2027-06-30
Current name since
2026-03-30
Current type since
2016-01-30
59
Awards
28 awards with a single named supplier
€620,851,620
Sole-supplier value
€2,732,133,518 in total across all named suppliers; each supplier's share is not published
31
Shared awards
0
Declared by politicians

Directors, secretaries and shareholders are not in CRO's open data. CRO sells officer information through CORE; it is not shown here rather than guessed.

Timeline

Dated events from every connected source. Declarations are dated to the end of their registration period.

Download CSV 9 rows, with the filters applied

2020

  1. Contract awardsAward: Shannon Town & Environs Flood Relief Scheme, Clare County Council Integrated Engineering and Environmental Consultancy ServicesClare County Council → Tetra Tech Ireland Limited · €14,885,046
    OGP
  2. Contract awardsAward: Technical Engineering ServicesTransport Infrastructure Ireland (TII) → AECOM Ireland Ltd | Arup | AtkinsRéalis | Barry Transportation | Clifton Scannell Emerson Associates | Fehily Timoney and Company | Jacobs Engineering Ireland Ltd | Kilgallen and Partners | Mott MacDonald Ireland | O'Connor Sutton Cronin | Roughan and O'Donovan | RP Tradeco Ltd t/a Roadplan Consulting | Sweco Ireland Limited | Tetra Tech Ireland Limited | TOBIN Consulting Engineers | WSP Ireland · €80,000,000
    OGP
  3. Contract awardsAward: Historic Closed Landfill Site at Connawarries, Carrick-on-Suir, Co. Tipperary: Detailed Design of Remediation Works & Application for Certificate of AuthorisationTipperary County Council → Tetra Tech Ireland Limited · Not stated
    OGP
  4. Contract awardsAward: ITT for Engineering Consultancy Services for Retaining Walls and Site Works at Townparks/Tullymongan Lower, Cavan (1)Cavan County Council → Tetra Tech Ireland Limited · €349,000
    OGP
  5. Contract awardsAward: Technical Consultancy Services Framework for implementing Eirspan bridge management on Motorway and National Road bridgesTransport Infrastructure Ireland (TII) → Arup | AtkinsRéalis | Doran Consulting | Malachy Walsh and Partners | O'Connor Sutton Cronin | Roughan and O'Donovan | Tetra Tech Ireland Limited | WSP UK Ltd · €10,000,000
    OGP
  6. Contract awardsAward: Petroleum Production Environmental ConsultancyDepartment of Climate Energy and the Environment → Tetra Tech Ireland Limited · Not stated
    OGP
  7. Contract awardsAward: Architectural or Civil / Structural Engineering Led Urban Design Team Consultancy Services for the South Dublin Street and Backlands Regeneration Scheme.Monaghan County Council → Tetra Tech Ireland Limited · €697,180
    OGP
  8. Contract awardsAward: Framework 2019 for Civil/Structural Engineering Services.Health Service Executive (HSE) → AECOM Ireland Limited | Arup | AtkinsRéalis | Crocon Engineers ltd | Cronin and Sutton Consulting | CST Group | Cundall (Ireland) Ltd. | Curtins Consulting Limited | D. Fallon Consulting Engineers | David Kelly Partnership Chartered Engineers Limited | Doherty Finegan Kelly Ltd | Doran Consulting | Downes Associates Limited | Dundalk Civil and Structural Engineering LTD t/a DCE IRL | Egis Engineering Ireland Limited (formerly known as JB Barry and Partners Limited) | GARLAND | Hanley Pepper Ltd | Hassett Leyden and Associates | Hayes Higgins Partnership | Hendrick Ryan + Associates | JODA Engineering Consultants | John Britton Consulting Engineers | Kavanagh Mansfieldand Partners | Malone O'Regan | McMahon Associates | Mott MacDonald Ireland | MPA Consulting Engineers | MRG Consulting Engineers | Nicholas O'Dwyer Ltd. | O'Connor Sutton Cronin | ORS | P.Coleman and Associates | Patrick J. Newell Consulting Engineers | PUNCH Consulting Engineers | Roughan and O'Donovan | Ryan Associates Consulting Engineers | Stantec | Taylor and Boyd LLP | Tetra Tech Consulting Ireland Limited | Tetra Tech Ireland Limited | The McKenna Pearce Practice | TJ O'Connor and Associates | TOBIN Consulting Engineers · €100,000,000
    OGP
  9. Contract awardsAward: Framework 2019 for Quantity Surveying ServicesHealth Service Executive (HSE) → AECOM Ireland Limited | Albert Strain and Associates | Andrew P Nugent and Associates | AtkinsRéalis | Austin Reddy and Company | BKMQS Ltd | Brendan Merry and Partners | Buildcost | Cahalane Lynch Associates | Carron + Walsh Construction Consultants Ltd | Chancery Group | CHPR Limited trading as John J. Casey and Co. | CuddyQS | Cumming Group Ireland | Currie and Brown (Ireland) Ltd | David McGrath and Associates | Deasy Walley Partnership | Desmond MacGreevy and Partners | DMC Global Partners | Ed Cotter Partnership | Harris Coyle Breen | Joseph C Hogan and Sons (Clare Street) Ltd | Kane Crowe Kavanagh | KSN Construction Consultants | Lambert Surveyors | Lawlor Burns and Associates | Leonard and Williams | Linesight | Long O'Donnell Technical Services | Mc Loughlin + Associates | McCullagh Lupton Quinn | McGahon Surveyors Ltd. | MGM Partnership | Michael Barrett Partnership | Mitchell McDermott Construction Consultants | MJ Turley + Associates | MolloyQS | MORMQS Ltd T/A MacMinn O'Reilly Mahon | Noel J. Farrell and Associates | Nolan Construction Consultants | O'Reilly Hyland Tierney and Associates (DON'T USE) | Peter F. Costello and Partners | Rogerson Reddan and Associates Ltd. | SAMMON PM+QS | Tetra Tech Ireland Limited | Tim Murphy Chartered Surveyors | Tom McNamara and Partners | Tony O'Regan Associates | Turner and Townsend Ltd | WH Stephens · €100,000,000
    OGP