Our ethos is simple

We produce
design that
works.

To achieve this, we must strike a balance between aesthetics and practicality. Quite often the simplest solution is the best one.

With over 20 years in practice, we have amassed significant experience in all sectors of the built environment.

We specialise in master-planning, healthcare, hospitality, housing and commercial work, with experience across a range of scales and varying degrees of complexity.

Meet the team

Powered by our people

Tracey Sludds

Director

Tracey is a registered RIAI architectural technologist with over 20 years’ experience. She is a certified European Passive House Designer and is a qualified Project Supervisor Design Process (PSDP). Tracey also has lectured at the Dublin Institute of Design. Tracey is passionate about energy-efficient design that is both practical and progressive. She believes that a building’s design can only be classed as a good design if it is a success for the people who use it. ”I believe the end-user has got to be the first person considered when setting out to design a building or a space. What use is a beautiful space if it is not a good space to use?”

Cathal O’Leary

Director

Cathal studied architecture in UCD. He is a registered RIAI architect with over 20 years’ experience. He is a certified European Passive House Designer and is a qualified Project Supervisor Design Process (PSDP).

Cathal studied architectural design because he was interested in the more creative side of the building process. Cathal believes that the real challenge facing an architect is designing a building that is both beautiful and functional. Cathal tends to be an intuitive designer, relying heavily on his instincts to create innovative and unique buildings and spaces.

Robert Cullen

Technical Director

Robert joined OLS Architects in 2024 having gained 15 years’ experience to date working on a range of complex projects including Luxury Homes, Residential Developments and Hotels. He is also a certified European Passive House Designer and is a qualified Project Supervisor Design Process (PSDP). Roberts particular expertise is delivering innovative and practical design solutions that achieve maximum income or capital return on existing assets or new developments. He combines a sound knowledge of Planning and Regulatory issues with a thorough understanding of commercial, stakeholder and end-user requirements.

Anthony Burke

BIM Manager

Anthony is a registered RIAI architectural technologist and BIM Manager.

He also has a Degree in BIM – Digital Construction from TU Dublin. With 15 years’ experience in the industry, Anthony has the experience to deliver complex projects through BIM.


Anthony has experience as a design coordinator across multidisciplinary design teams. He also has experience in project delivery and site inspection, BIM modelling/review, and detailing.

Capabilities, And Experience

Our Expertise​

Our practice consists of a strong team with great knowledge, capabilities, and experience across different areas of architecture and design. We work together along with other specialists/ service providers to ensure projects run smoothly and have the best outcome for our clients.

Our services include the following:

  • Architecture
  • Feasibility
  • Master-planning & Urban Design
  • Sustainable Design (passive, LEED, etc)
  • Planning Applications
  • Fire Certificates
  • Disability Access Certificates
  • Tendering
  • BCAR
  • Construction
  • BIM
  • Health & Safety / PSDP
  • Conservation