This year, TSP helped ClientEarth create their most sustainable workplace yet: in full alignment with their mission and raison d’être.
What role did accreditations play in this green success?
ClientEarth’s relocation to a 10,000 sq ft warehouse office in Islington was awarded with BREEAM Excellent and a SKA Gold rating. SKA rating is an environmental assessment method, benchmark, and standard for non-domestic fit-outs, led by RICS. With an estimated 11% of UK construction expenditure on fit-outs – it’s an area worthy of rigorous assessment.
The SKA assessment is comprised of 104 Good Practice Measures (GPM) covering CO2 emissions, waste, water, pollution, materials, transport and wellbeing. Each GPM is ranked from 1 to 104, relative to the other measures: 1 representing the greenest of the green. The process is divided into 3 stages:
- Design and planning
- Delivery and construction
- Occupancy stage assessment – reviewing fit-out performance a year after completion
At the end, you are crowned Bronze, Silver, or Gold depending on your feat.
The assessor typically charges between £2,000-£3,000 per certification, depending on project complexity. The free online SKA rating tool is also available for anyone to informally evaluate a project.
So, how did ClientEarth achieve the enviable SKA Gold?
The fit-out featured extensive furniture reuse, combined with recycling, reclaiming, and reworking existing materials. It included low-VOC paints, motion-activated LED lighting, and FCS-certified recycled plywood paneling throughout. Not to mention, an open plan woodland area with a natural planted canopy.
The benefits of this accreditation are manifold. On top of improving energy and waste management, it has enabled ClientEarth to measure their sustainability impact accurately and prioritise it in a quantifiable way. It also reduced the project cost and future operating costs.
ClientEarth’s new workplace showcases the very best nature has to offer, exuding natural beauty. Employees work very hard to protect our planet and they are now able to do so in an environment that motivates and inspires them daily. Achieving SKA Gold has undeniably enhanced occupier engagement and wellbeing.

Featured Stories & Insights

Greener Offices for Charities
Sustainability has moved from being a “nice to have” to an essential requirement for charities,...
Read More
Community in The Office: Why does it matter?
The Spaces to Places: Voice of the Customer 2025 report makes one thing clear: people...
Read More
Rethinking Flex: Zac Goodman on the Voice of the Customer 2025
On 17th September, our CEO Zac Goodman joined a panel of UK office experts from...
Read More
The Power of Customisation in Multi-let Offices
The way we work has shifted. Today’s tenants want spaces that reflect their brand, support...
Read More
How Landlords Are Keeping Offices Full in 2025
Multi-let offices are changing fast. Shorter leases, hybrid working, and rising expectations mean landlords need...
Read More
TSP Re-certified as a B Corp
LONDON, 7th July 2025 – TSP, a multi‑award‑winning investment and real‑estate asset manager headquartered in...
Read MoreView all