When you book a hotel, you check the stars before you check the price. When you book a flexible office, you mostly rely on glossy photos, a guided tour and a gut feeling. That gap is starting to close.
This week, London operator Office Space in Town announced that all five of its Zone 1 locations have received Gold certification from FlexGrade. FlexGrade describes itself as the first independent benchmarking body to bring a hotel-star rating system to the flexible office sector. Office Space in Town is the first London provider to achieve Gold across its entire portfolio. The announcement itself is a press release. The bigger story is what it says about where the flex market is heading.
What a flex office rating actually measures
FlexGrade awards Bronze, Silver or Gold based on an independent assessment across eight categories:
- building profile
- design
- compliance
- amenities and services
- sustainability
- health and safety
- security
- guest experience
The key word is independent. Until now, almost every quality claim in the flex market has been self-reported. “Premium”, “boutique” and “Grade A” appear on nearly every operator’s website, and none of these labels is verified by anyone.
FlexGrade is not the only player. The WELL Coworking Rating, administered by The Instant Group, focuses specifically on health and wellbeing, and WeWork announced this summer that it is pursuing that rating across its global portfolio. Two layers of certification are emerging: one for overall quality and experience, and one for wellbeing.
FlexGrade is also gaining traction beyond individual operators:
- UK operator Landmark submitted its entire national portfolio for assessment.
- CBRE partnered with FlexGrade to launch it in India in February 2026.
- Preferred Office Network has added FlexGrade to its broker offering.
Why ratings matter now
The timing is not a coincidence. Flex has moved from a stopgap for startups to a structural part of corporate real estate strategy. Large occupiers bring procurement teams, and procurement teams want comparable data. A Gold-rated space in London and a Gold-rated space in Bengaluru should mean roughly the same thing. That is exactly what a global corporate portfolio manager needs.
Demand is also strong. According to CBRE, flexible take-up in London has reached its highest level since before the pandemic. In a busy market, occupiers need a faster way to separate excellent operators from merely adequate ones. Brokers need it too: a shortlist of certified spaces is quicker to build and easier to defend to a client.
For operators, the commercial upside is clear. Office Space in Town reports an average client stay of 44 months, more than double the London flex market average of 19 months cited by CBRE. A rating does not create that loyalty. It does signal the things that drive it: consistency, service and well-maintained buildings.
Ratings are also becoming a capital-markets tool. Office Space in Town, which recently completed a £129 million refinancing, is now looking for an investment partner to roll out its “certified operator model” to more locations. A third-party quality stamp makes that pitch more convincing to investors.
The catch: who rates the raters?
Ratings are not a cure-all, and a healthy dose of scepticism is warranted.
Selection bias: Certification is something operators opt into. The operators most likely to apply are the ones confident of scoring well, which makes the published results look rosier than the market really is.
Label inflation: If most participants end up with Gold, the label loses its power to differentiate. The hotel industry knows this problem well.
Cost: Assessments take time and money. Large portfolios can absorb that easily. A single-site independent operator, often the most characterful space in town, may not be able to.
A snapshot, not a stay: An inspection captures a moment. A member’s experience happens every day: the Wi-Fi on a busy Monday, the speed of the community manager, the coffee machine that has been broken for a week. Reviews and references remain essential.
Too many labels: With FlexGrade, WELL and sustainability certifications all competing for attention, occupiers risk facing a new kind of confusion. A lack of information gets replaced by a surplus of badges.
What this means for the Netherlands and Belgium
So far, independent flex ratings are mainly a UK and international story. In the Benelux, occupiers still largely rely on location, price, photos and word of mouth. That is likely to change as international corporates bring their procurement standards with them.
For operators, the smart move is to behave as if you are already being rated:
- Document your compliance and safety procedures.
- Get your sustainability credentials in order. Dutch offices must already meet at least energy label C.
- Measure member satisfaction systematically.
- Be honest about what “premium” means in your space.
When ratings arrive, you will be ready. If they never do, you will simply be a better operator.
For occupiers and companies looking for a flexible office, the eight FlexGrade categories make an excellent checklist, with or without a badge. Ask about security procedures, sustainability data and how service issues are handled before you sign, not after.
Conclusion
The flex office market is growing up. Just as hotels, restaurants and buildings learned to live with independent ratings, flexible workspace is entering an era where quality must be proven, not just promised. For the best operators, that is good news. For everyone else, it is a wake-up call.
