BRENNAN | FURLONG Architects, founded in 2015 by Gareth Brennan and Séamus Furlong, is an award-winning RIAI-registered practice based in Clontarf, Dublin. The practice is accredited in Conservation (Grade III), can act as Project Supervisors for the Design Process (PSDP) and holds full Professional Indemnity Insurance.

The work of the practice – a mix of residential and commercial projects - centres on the principle that the well-considered & carefully developed design of buildings and spaces we use every day helps to enrich and enliven our experience and interaction with the built environment.

Each project is viewed as a unique opportunity to collaborate with our clients and the design and construction team as a whole to develop the brief and maximise the potential of each site, incrementally improving our built environment, and our daily lives as individuals, families & communities.

The work of the practice has been published in a number of newspapers and magazines in Ireland such as The Irish Times, The Sunday Times, The Irish Independent, The Sunday Independent, Image Interiors, House + Design, The Gloss Magazine, House & Home Magazine, Plan Magazine & Irish Country Life Magazine with our Yew Lodge project featuring in “Home of the Year” on RTE Television in 2022.

Selected projects by the practice have featured in the annual Irish Architecture Foundation Open House Dublin event, held each October, with the practice giving tours to the public of completed projects as part of Open House every year since 2016.

The work of the practice has also received recognition through various architectural and design awards and short-listings. In 2017 the practice won a silver medal at “Bloom” for “Space to Collaborate” designed in conjunction with Tricia Harris. In 2018 our Double Pivot project was awarded a Special Mention at the AAI Awards. In 2022 our Stiles Road project won the award for best House Extension / Refurbishment at the Building and Architect of the Year Awards. Various other projects have been shortlisted for the Irish Design Institute Awards, the Irish Concrete Society Awards, the Building and Architect of the Year Awards and have been selected for exhibition by the RIAI as part of their annual architectural awards.

Séamus Furlong Partner

Séamus is an RIAI-registered architect and qualified Architectural Technologist with a Master's in Spatial Planning. His experience spans private residential projects to large-scale, mixed-use developments with significant social and economic impact. He co-founded Brennan Furlong in 2014, bringing expertise in placemaking and sustainable design.

Gareth Brennan Partner

Gareth graduated from UCD School of Architecture with a B.Arch in 2001 and has been an RIAI member since 2008. After working in Dublin and New York, he founded his own practice in 2009. In 2014, he partnered with Séamus Furlong to establish Brennan Furlong Architects.

Beata Galej Senior Project Architect

Beata earned her Master's in Architecture from Wrocław University of Science and Technology in 2005 and completed her RIAI/UCD Part III in 2013. She has worked with Dublin practices since graduating and joined Brennan Furlong in 2014. Passionate about sustainability, she completed NZEB training at DIT in 2016.

Jozefina Godec Senior Project Architect

Jozefina holds a Master’s in Architecture and Urban Planning from Zagreb, Croatia, with over 15 years of experience in Croatia and Ireland. An RIAI member, she specializes in public, commercial, and residential projects, focusing on tailored, design-led solutions that enhance the built environment.

Paul Teeling Architectural Technologist

Paul graduated from the University of Wolverhampton with a B.Sc. (Hons) in Architectural Design Technology in 2007 and completed a Postgraduate Certificate in BIM Technologies (TUD) in 2017. He worked with several Dublin practices before joining Brennan Furlong in 2015. He is an Associate Member of CIAT.

Brendan Daly Senior Project Architect

Brendan graduated with a Bachelor of Architecture (Hons) from the Dublin School of Architecture, DIT (TUD) in 2015 and became an RIAI member in 2019. He has worked in practices in Melbourne and Dublin, before joining Brennan Furlong in 2021.

Grainne Keogh Senior Project Architect

Grainne graduated with First Class Honors from Queen’s University Belfast and earned a Master’s in Architecture from UCD in 2013. A registered RIAI member since 2019, she has over a decade of experience in conservation, commercial, and public projects, specializing in bespoke residential architecture with a craft-driven and artistic approach.

Ilze Antonova Senior Project Architect

Ilze graduated with a Bachelor of Architecture (Hons) from the Dublin School of Architecture, DIT (TUD) in 2015 and completed her Professional Practice Diploma in 2021. She became an RIAI-registered architect in 2023. With experience in Dublin-based practices, she has been part of Brennan Furlong since 2017.

Linda D’Arcy Part 2 Graduate Architect

Linda joined Brennan Furlong as an intern in 2019 before completing her Bachelor of Architecture (Hons) at TU Dublin. A passionate traveler and painter, she backpacked through South America after graduating. She returned as a Graduate Architect in 2024 and is preparing for her Architectural Professional Practice studies.

Eadaoin Duffy Part 2 Graduate Architect

Eadaoin earned her Master’s in Architecture from UCD in 2023 and has worked in practices in Dublin, Wicklow, and Granada respectively. Passionate about sustainable design and materiality, she joined Brennan Furlong in August 2024 to further develop her expertise in innovative, environmentally conscious architecture.

Geetanjali Damarla Part 2 Architect

Geetanjali earned her B.Arch in 2016 in India and spent two years working on residential and institutional projects. She completed a Master’s in Urban Design and Planning at UCD in 2019 and has since worked in Ireland, specializing in residential, masterplanning, and urban design. She is preparing for her Part III.