BREEAM, SKA, or WELL? A Jargon-Free Guide to Building Certifications.

Planning an office fit-out in London comes with endless decisions, but few cause as much initial confusion as navigating environmental accreditations.

BREEAM, SKA, WELL—the sheer volume of workplace accreditations can feel overwhelming.

Yet, third-party sustainability and wellness credentials are no longer just “nice-to-haves” for corporate PR. They directly impact your ESG compliance, recruitment power, lease negotiations, and long-term operating costs.

The secret? You don’t need all of them. You just need to know which certification actually aligns with your project scope, budget, and corporate ethos. Here is a plain-English guide to the “Big Three” standards shaping London’s finest workspaces.

1. SKA Rating: The Practical Specialist

• Managed by: Royal Institution of Chartered Surveyors (RICS)
• The Focus: Environmental sustainability strictly within interior fit-out and refurbishment projects.

Unlike standards that judge an entire building’s brickwork and heating plants, SKA measures only what is inside your project scope. If you aren’t altering the external facade, SKA won’t penalise you for it. It evaluates over 100 “Good Practice Measures” across energy, waste, water, materials, and indoor air quality.

The Verdict: Ideal for tenants taking on a Cat B fit-out in a leased London building where you have limited control over the base structure. It is flexible, highly cost-effective, and awarded in Bronze, Silver, or Gold tiers.

2. BREEAM Refurbishment & Fit-Out: The Heavyweight Benchmark

• Managed by: Building Research Establishment (BRE)
• The Focus: Whole-building lifecycle sustainability and broad environmental performance.

BREEAM is the granddaddy of green building certifications in the UK. Its Refurbishment and Fit-Out (RFO) standard evaluates everything from construction waste management and responsible timber sourcing to acoustic performance and energy efficiency. Projects earn credits translated into ratings from Pass to Outstanding.

The Verdict: A natural choice for landlords delivering Cat A spaces, large corporate head offices, or occupiers in premium London developments where investors and global stakeholders demand a universally recognised standard.

A quick word of advice: BREEAM is more rigid than SKA and often requires early input from specialist consultants (like ecologists or acousticians), making it better suited for larger budget projects.

3. WELL Building Standard: The People-First Design Code

• Managed by: International WELL Building Institute (IWBI)
• The Focus: Human health, wellbeing, and cognitive performance.

While BREEAM and SKA ask “How does this office impact the planet?”, WELL asks “How does this office impact the human being sitting inside it?”

WELL v2 assesses 10 core concepts: Air, Water, Nourishment, Light, Movement, Thermal Comfort, Sound, Materials, Mind, and Community. It evaluates tangible daily details—air filtration quality, access to natural daylight, ergonomic setups, and even office catering policies.

The Verdict: Essential for organisations driven by HR and talent strategy. If your primary goal for an office fit-out is boosting employee retention, lowering absenteeism, and creating an irresistible workplace culture, WELL (awarded in Silver, Gold, or Platinum) is the gold standard.

• Go with SKA if: You want a straightforward, sensible environmental accreditation that directly reflects what your design and build team delivers.

• Go with BREEAM if: Your lease, board, or institutional investors demand a globally recognised environmental seal of approval.

• Go with WELL if: Your top priority is employee experience, culture, and winning the ongoing competition for talent.

Can’t decide? Many leading London workplaces now opt for a hybrid approach—combining SKA or BREEAM for environmental integrity with WELL for occupant health.