Architecture for Belfast and Northern Ireland homes

New homes, extensions and remodelling shaped around light, space, comfort and everyday life.
Featured project: Long House / The Gallery — BBC NI House of the Year 2025


About Me

I’m Marcin Piotrowicz, a Belfast-based architect working with homeowners across Northern Ireland. My work combines thoughtful design with technical care, helping clients create homes that are comfortable, practical and built to last. Professional qualifications and experience are important, but every project begins with understanding the people who will live there.

Read more about my qualifications and professional registrations

How I Help

Every homeowner starts from a different place. You may be planning a new home, extending your existing one, improving how it works or simply trying to understand your options. Together we’ll identify what’s needed and the level of architectural support that’s right for your project.

Explore architectural services.

My Process

Every project is different, but good decisions come from a clear process. From the first conversation through design, approvals and technical development, each stage builds on the last, helping turn ideas into a well-resolved project.
→ My process

Here’s what homeowners in Northern Ireland say about working with me:

His attention to detail, enthusiasm, patience and creative energy made the whole process of designing and building our beautiful house a joy.

Very reliable and punctual… great vision for structure and design… highly recommend him.

Homeowner in East Belfast, Review on Houzz

My new accommodation is very comfortable and has lived up to my expectations,
especially the performance of its insulation.

Homeowner in Holywood area, Private text message