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We are:


Architects, Designers, Planners, Project Managers

#Get In Touch

#Our Story and Our Team

We are:


Architects, Designers, Planners, Project Managers

#Get In Touch

#Our Story and Our Team

Design Solutions

Ceardean have helped and been with my business every step of the way. Without them we wouldn't be where we are today. If you want attention to detail, out of the box designs and friendly service they are the crowd to go with. Couldn't recommend them more.


Caolan Cullen

Owner - Arctic Stone - Award Winning Ice Cream

We approached Derek at Ceardean as we often passed his office with his sign outside and liked his style from the website. We initially contracted for a few design ideas and quickly realised he understood well what we wanted and went with him for the whole project. Ceardean were fantastic from start to end. When our planning was declined initially they helped us through the appeal process with an Bord pleanala and after delivering very clear documents the planning was approved. Throughout the project the project management was great at keeping the project on track and on budget. We would definitely recommend


Domestic Extension & Refurb Client

Worked with Ceardean on the design of One Society. No project is without challenges but have to say we worked closely with Ceardean to ensure our vision was reached. They have a solid team behind them.

cafe dublin 1


One Society Coffee Shop

We chose Ceardean to design and look after the renovations on our new home. It was the best decision we made. Derek came up with a fabulous design which was exactly what we were looking for. He and his team helped us through the whole process from design, planning permission, tenders and project managed the build for us. The result was the perfect home for us. I would highly recommend Ceardean after our experience.


Domestic Extension Client

Myself and my partner Paddy have nothing but great things to say about Ceardean Architects. Derek was professional, thorough, so responsive and his attention to detail was second to none. He has provided us with much-needed help and assistance and I cannot recommend their services enough. 10 out of 10 🙂


House Extension/refurb

Who We Are & What We Do

We Are Architects & Designers.

We Just Love To Design, Plan, Build And See-through Our Special Projects To The End. But For You, This Is The Beginning.

We Collaborate Closely With Clients & Each Other, And Draw Upon Our Bizarrely Diverse Mix Of Expertise. We (Nearly) Have It All Here; RIAI Registered Architects, The Designer, The Planner (Yawn), The Tech Guy, The 3D Ace, The Energy Guy, And So On. Actually We Have Over 100 Years Experience Between Us, And Still Learning Every Minute.

Individually Most Of Us Have Been Through A Personal Construction Project Ourselves. This Is Unusual For A Dublin Practice. So We Know Exactly What It Feels Like To Be On That Side Of The Fence. We Have Felt The Pain.

Our Speciality Is Most Definitely CREATIVE Design, And Bringing Individuals And Business's Unique Identity Into The Built Environment. Just Look At Some Of What We Have Done! We Are So Proud Of It, But Have So Much More To Do In This World.

So Thanks For Visting Our Site, And Enjoy Browsing Our Projects. Then, Go Build Something Wonderful!

Ceardean Team



Check Out Our



ceardean youtube channel

the team

Derek Trenaman Architect - RIAI      

Michael Malone Architect / Conservation / Planning - RIAI

Cathy Trenaman Architectural Designer / PSDP

Sarah Trenaman Office Manager/Marketing

Willnara Guimarães Architectural Technologist

Aurora Bosch Font  Architectural Designer     

Nick Hegarty  Architectural Designer

Josi Morette Interior Designer & 3D Modeller

João Batista Chaves Architectural Designer & Revit Specialist

Katja Kavcic  Architectural Designer

Fred Meagher Marketing/Arch Technologist 

Tara Brewer Architectural Technologist 

Amanda Silveira Architectural Designer & 3D Modeller 

Louisa Egan Interior Designer & 3D Modeller 

Pedro Vargas Pieck Architectural Designer 

Ceardean Home Design Guide

Download and browse our free Home Design Guide and learn how an architect can assist you in realising absolute value when designing your home for life! Call us with any questions at all, an architect here would be delighted to help and offer advice on your particular situation.


"If you think good design is expensive, you should look at the cost of bad design.” - Ralf Speth


phone:     +353 (1) 5324183

email:       [email protected]


Dublin Office

D8 Studios, 9 Dolphins Barn, D08WD35

Wexford Office

Ballysheen, Our Lady's Island, Y35T2K4

Sligo Office

Cul Din, Cloonascoffigh, Dromore West, F26E065

Tipperary Office

Killoscully, Co. Tipperary


Next, Sarah in our office will call you back within 30 minutes or so during normal working hours, or email you outside hours! Just needs a few more details to put you in touch with the right architect (Derek, Michael or Nick)

Project Spotlight

Completed 2021 - Eskragh, Co. Sligo

An abandoned country Bungalow reimagined for the modern family.

Certified Passive House Designer
Ceardean architect registered RIAI
Project Designer Design Stage

Passive House Designers

Certified designers of Passive House standard buildings; ultra-low energy, lower ecological footprint, optimum comfort & reduced cost.

Registered Architects & Conservation Grade 3

RIAI Registered 2023 & RIAI Qualified Conservation Grade 3. The Royal Institute of the Architects of Ireland (RIAI) is the Regulatory and Support body for Architects in Ireland

Project Supervisors Design Process (PSDP)

PSDP practitioners to act on behalf of clients ensuring coordination of design work with regard to health and safety.