Marcin Piotrowicz Architect

Warmer, quieter, healthier homes in Northern Ireland

I help homeowners upgrade and transform older houses – with independent design and coordination, tailored to your budget – using retrofit toolkit.

About Me

I’m Marcin Piotrowicz — an architect based in Belfast, specialising in retrofit design for homeowners. My focus is on helping people upgrade older houses into warmer, healthier, and more energy-efficient homes. I’m also a certified Passive House designer, bringing rigorous standards and practical experience to every project. More about me→

How I Help

Retrofit involves upgrading existing buildings so they don’t perform like tents with radiators bolted on. There is sure more nuance to … what retrofit is.

My Process

Every project is different, and the process adapts as needed. But here is how it typically unfolds:

1. Discovery – Free 30 minute Zoom session to assess fit
2. Home Visit – Proper look on your house and initial feasibility discussion
3. Strategic Assessment – Your house analysis and comprehensive report
4. Your Options – Retrofit strategies tailored to your budget and timeline
5. Design & Delivery – From concept through to completion and monitoring

   See full process→

check, if we can work together
on upgrading your own home