BRENNAN | FURLONG Architects & Urban Planners, founded by Gareth Brennan and Séamus Furlong in 2015, is an award-winning RIAI registered practice based in Dublin. The work of the practice, a 10-strong design-led studio, is a mix of both residential and commercial projects, and centres on the principle that the well-considered & carefully developed design of buildings and spaces we use every day helps to enrich and enliven the experience and interaction with our 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.
BRENNAN | FURLONG is accredited in conservation (Grade III), can act as Project Supervisors for the Design Process (PSDP) and holds full professional indemnity insurance.  

Our studio is based in Dublin 3, from where we work on residential and commercial projects in Dublin and beyond. We would welcome the opportunity to discuss the services we can offer you, simply drop us a line or call into our main studio at 129 North Strand Road.

Throughout their careers Gareth and Séamus have developed extensive experience on a diverse range of projects including large scale residential, commercial and mixed-use developments such as:

  • Distillery Lofts - Conversion of 1850’s industrial complex to apartment & commercial use, Dublin 3.

  • The Steelworks - Mixed-Use Development of 200+ apartments and 30,000+ sq ft of commercial space, Dublin 1.

  • Dunnes Stores – Refurbishment & fit-out of numerous retail premises, nationwide.

  • Westfield Retail - Development of over 99,000sq mts of retail space with 3,680 parking spaces, Sydney, Australia.

  • Repair and restoration of early 20th century high-rise apartment buildings, New York City.

  • Age Friendly Cities & Counties Programme - commissioned by Meath, Fingal & Monaghan County Councils.

  • Student Accommodation Complexes - Dublin 1, 3, 9.

  • Master-planning of €100m expansion of existing food production site, Mallow, Co. Cork.





Studio Manager

Sarah is the BRENNAN | FURLONG Studio Manager and is the first point of contact for new and existing clients and business associates.

Sarah deals with the day to day studio operations, administration, accounting, marketing and H.R. 

She supports the partners with the general running of the practice while also supporting the design team with production, issuing of information packages and formal documentation.


Senior Project Architect

Beata is an RIAI registered architect with excellent design skills. She complements these with extensive technical knowledge placing her as one of the main project architects within the practice.

Beata has garnered experience across a wide range of projects and on all stages of building procurement.

She also holds RIAI accreditation as a Project Supervisor (Design) Phase. 



Senior Project Architect

Grainne is a Part III accredited Architect with a focus on design and conservation. Through her extensive work on protected structures, she has garnered an excellent knowledge of craftsmanship and materiality.

She has worked on a number of large and small scale residential, exhibition and commercial projects, through all stages of the creative process.

It is her aim to always bring quality and value to all of the designs she is involved in, whilst providing spaces with a warm and welcoming atmosphere. She is continually striving to refine her skills in design, technology and craft to distil her understanding of the profession.


Architectural Technologist

Paul is an architectural technologist with an Honours Degree in the field of Architectural Design Technology.

He has gathered extensive post graduate experience working on a broad range of project categories, including commercial, mixed use, educational, agricultural, and residential.

His career to date has covered all aspects of the design and construction processes from initial client briefing through to on-site supervision and completion.


Architectural Technologist

Tanya is an Architectural Technologist with a passion and flair to continuously develop her skillset within the industry.

Since her graduation from WIT in 2009 with a BSc(hons) in Architectural Technology, Tanya has worked on a broad range of small to large scale projects including Retail, Commercial, Educational, Residential and Pharmaceutical.

Tanya has a range of experience within BIM and many other drafting tool programs and strives to further her knowledge and skills within the sector by focusing on quality design led projects and remaining updated with industry development.


Graduate Architect

Since graduating with a master’s degree in Architecture from University College Dublin, Rónán has primarily worked within the residential sector on bespoke refurbishments and additions as well as larger-scale developments and masterplans.

Rónán enjoys the contrast between ‘macro’ and ‘micro’ scale thinking, paying attention and care to the craft of detail design elements while also learning from each project’s relationship to its broader physical and social context.

Rónán is passionate about integrating environmentally-conscious design solutions into his work to the benefit of building occupants as well as the eco-systems around them.

Rónán is currently completing his Part III - Professional Diploma in Architectural Practice.


Graduate Architect

Ilze is a Graduate Architect with extensive academic and practical experience in architectural design.
Since graduating from Dublin Institute of Technology with BArch (Hons) in Architecture she has worked on design projects with a focus on the residential sector. She constantly seeks new ways to enrich her professional knowledge in the field of architecture and design by taking part in International workshops and conferences.

Ilze is fascinated by how objects, materials and buildings merge together to form a rich layering within contemporary cities and how this impacts architecture. Her passion lies in the process of design, through 3D modelling, exploration of materials & testing spatial complexity.

Ilze is currently completing her Part III - Professional Diploma in Architectural Practice.


Graduate Architect

Niamh is a recent architecture graduate having completed her undergraduate studies in the UK at Portsmouth University, working in between at a multidisciplinary design practice in Edinburgh on large scale residential projects and completing masters at Plymouth University. 

She is passionate about socially responsive and ecologically sensitive design and collaborating with the end user to create a well considered space.  

Her enthusiasm for spending time outdoors on land and in the sea inspires her to design spaces which are in harmony with our natural environment and enhance our well-being.

Linda D’Arcy

Architectural Intern

Linda is a Part 1 Graduate Architect currently working as an Architectural Intern with Brennan | Furlong. She is studying in TUDublin and is excitedly taking a year out to gain professional experience and to better understand the workings of an architectural practice.

Her passion to achieve an understanding of the built world and how it impacts the user in terms of climate, well-crafted design details and environmental aspects, is a valuable addition to our practice, while bringing a pair of fresh young eyes to the office.

Throughout this year Linda is eager to develop her professional knowledge to assist her in completing the final years of her studies.