About

"We've had Seán and Stephen Ltd as our architects for 18 months so far. Lauren and I are complete novices to design & construction, and Seán and Stephen have expertly and supportively guided us through each stage, enabling us to really enjoy every part of creating our new home. I would happily recommend this professional practice to family and friends

They were great at helping to bring some of our own design preferences to life using plans, 3D models, and interactive virtual room design tools.  But they also have challenged our thinking too, leading us to add in a number of amazing and creative features that we would never otherwise have considered.

As a direct result of the quality of S&S’s planning pack our application (which proposed various potentially contentious items such as a basement, lightwell, and dormer) was approved without a single significant amendment.

Since the contractor began the works Seán and Stephen have project managed every aspect of the construction programme, providing us with detailed weekly updates and explaining everything to us in layman’s terms.  They consistently fight our corner with the contractor on a number of technical and cost-related issues which gives us real confidence that the project is in safe hands.  So far we have enjoyed a stress-free project thanks to their project management skills."

- Lauren and Ben, House with a Slide


Seán and Stephen is an architecture practice based in East London. 

We work on a wide range of projects, from domestic extensions and residential developments through to affordable co-working spaces, permanent public artworks, temporary museum installations, and high street regeneration projects. 

We have a proven track record of helping our clients achieve their goals. We are driven by finding solutions for both design and management challenges in projects: small sites, tight budgets and timelines, planning policy context and statutory consents.

The Current Team : Stephen Mackie, Seán McAlister, Toby O'Connor

Past Members : Maija Viksne, Gary Nash, Lotta Paulus

Directors Stephen Mackie and Seán McAlister studied together in Dundee. They gained varied experience at different companies in London before establishing the practice together in 2013. They are both ARB registered architects and Seán & Stephen Ltd. is an RIBA Chartered Practice 

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