What it actually takes to get, and keep, a building certified WELL Platinum
Temasek Shophouse has just achieved WELL Platinum Certification from the International WELL Building Institute (IWBI). It’s a milestone worth pausing on. A conservation shophouse, restored from another era entirely, now holds one of the highest indoor environment certifications in the world. We were proud to work alongside the project team on the indoor air quality piece of that certification, and we wanted to share what the process actually looked like, because we think it says something useful to anyone chasing a similar goal.
For a building built long before anyone was thinking about occupant wellbeing, hitting that bar wasn’t a formality. It took years of fine tuning on top of a full heritage restoration, and a team that decided early on to aim for Platinum rather than settle for less.
The part that doesn’t make the headline
Most coverage of a certification win stops at the announcement. What’s harder to see, and what actually determines whether a building earns Platinum instead of Gold, is the everyday discipline behind it. Air quality is one of the most heavily scrutinized concepts in the WELL standard, and it isn’t scored on a single good day. It’s scored on evidence, a continuous, verifiable record of what’s actually in the air, month after month, that has to hold up under independent testing.
That’s the piece we were brought in to handle. Not a one time audit, but ongoing measurement of temperature, humidity, CO2, particulates, VOCs, and more, so the project team could know in real time whether the building was actually performing the way it needed to, long before an assessor ever showed up.
Why this matters beyond one building
Every building owner and consultant working toward a certification, whether it’s WELL, LEED, Green Mark, or an internal ESG target, eventually runs into the same problem this project faced. Certification is a moment, but performance isn’t. A building can pass its assessment and still drift out of compliance six months later if no one is watching the data in between. The gap between certified and still performing is where most of the real risk sits, and it stays invisible until something forces it into view, a complaint, an audit, a renewal that doesn’t go as smoothly as the first one did.
That’s the problem we exist to close. Not by handing over a sensor and stepping away, but by staying in the building’s story the way we did here, through the design conversations, the testing rounds, and the recertification cycles that come after. Our goal was never just to help one heritage building pass an assessment. It’s to give every client we work with the same thing, a clear, continuous, defensible picture of their indoor environment, so that certification, ESG reporting, and asset performance stop being separate scrambles and become one ongoing, manageable practice.
That only works as a partnership. We worked alongside the project’s sustainability consultants and the building’s own team through a genuinely rigorous certification process, not as a vendor delivering hardware, but as a collaborator with a stake in the same outcome the client was working toward. That’s deliberate. A client’s certification goals and our own goals aren’t separate things running in parallel. They’re the same goal, worked on from two sides of the table.
The building is the argument
There’s something quietly remarkable about the whole arc of this project. A conservation shophouse, built long before indoor air quality or occupant wellbeing were part of anyone’s vocabulary, carefully restored and then held to one of the highest indoor environment standards in the world. And it passed. Not a compromise version of the standard, not a heritage exemption. The full WELL Platinum bar, met by a building built in another era entirely.
For anyone weighing whether a similar certification, or a stronger ESG story, is within reach for their own building or portfolio, this is a useful data point. It suggests the constraint was never really the age of the building or the size of the budget. It was whether someone was measuring the right things, consistently enough, with a partner willing to stay through the whole process rather than just the sale.
Congratulations to everyone who worked on this certification. If your own building, or your client’s, is somewhere on that same road, we’d welcome the conversation.
About uHoo uHoo is an environmental intelligence company that partners with building owners, consultants, and certification teams on indoor air quality monitoring for healthy building certification, asset performance, and ESG compliance. Our sensors are used in homes, offices, schools, and public buildings across 80+ countries, but the sensors are only half of it. The other half is staying in the room with our clients, from the first design conversation through every recertification, because their goals are the ones we’re working toward too.
