Our Story

It all started with a flood…

It all started with a flood. In 2021, record-breaking rainfall overwhelmed St James’s Park — and our restoration of the Grade II-listed Westminster Fire Station.

The damage exposed just how unprepared even landmark buildings were for a changing climate.

Westminster Fire Station "Station House"

Shaped by Experience

Westminster Fire Station Front Exterior

Rebuilding taught us that London’s housing stock faces a hidden challenge: inefficiency and vulnerability. More than 446,000 homes in London and the Southeast — many among the city’s most valuable — still hold EPC ratings of C or below. With new standards approaching, homeowners will soon need to act.

Night view of Westminster Fire Station courtyard exterior with lit plants and a brick wall, showing an open door leading inside. Designed by Alchemi and Studio L London.

Simplifying the Complex

The greatest barrier isn’t always cost, but complexity. Retrofit can feel like a maze of consultants, reports, and technical language. We knew there had to be a better way — one that made the process clear, coordinated, and homeowner-focused.

Cityscape with historic and modern buildings, including the Palace of Westminster with the Union Jack flag, and The Shard skyscraper in London under a clear blue sky.

A Future-Focused Approach

That’s why we created Alchemi Renovations. Our services combine energy assessments, retrofit planning, and renovation delivery with a design-led perspective. Every project is tailored, every detail considered, ensuring efficiency, resilience, and beauty go hand in hand.

Sign on wall reading 'PENTHOUSE' in gold letters at Westminster Fire Station from Alchemi Group designed by Studio L London
Exterior view of the rear elevation of Westminster Fire Station, brick building with white-framed windows, black pipes, and warm wall-mounted brass lights, alongside a lush green vertical garden or plant wall on the right side from Alchemi Group.

Building for Tomorrow

Our mission is to help London homeowners make smart, future-ready improvements with confidence.

By uniting sustainability, compliance, and design integrity, we ensure homes are not only more efficient, but more resilient, valuable, and enduring for generations to come.