A few years ago, a custom sofa arrived at an install. It had a COM fabric, months of lead time, and was one of those pieces that kind of anchors the whole room. As the installer was unwrapping it, the box cutter went about a half inch too deep. Right through the fabric.

I remember standing there thinking about how absurd it is that after months of decisions, emails, samples, approvals, production schedules, and waiting, the thing that ultimately determined whether the client got the sofa they were promised was a rushed decision and a box cutter.

I recently read Unreasonable Hospitality by Will Guidara, and I haven’t been able to stop thinking about something he calls the One-Inch Rule. It’s the idea that restaurant staff should pay just as much attention to the final act of placing a plate in front of a guest as they do to everything that came before it. That last inch is the culmination of hours of work by dozens of people, and if it’s handled carelessly, it can shape how the entire experience is remembered. It’s really just a reminder to stay present and see things all the way through to the end.

I think interior design has its own version of this. In fact, I think we probably have a lot of them. The funny thing is, if everything goes right, nobody notices. It’s only when something goes wrong that you realize the final inch may have mattered more than all the inches that came before it.

Freight is probably the clearest example. We spend so much time obsessing over sourcing, craftsmanship, lead times, and fabrication details. But almost nobody talks about the literal last few feet a piece travels before it lands in a client’s home. A leg snapping when its being loaded, a tight stairwell damaging a fresh paint job, or a delivery team that doesn’t understand what they’re carrying can undo months of work in a matter of seconds. The final inch of a freight delivery isn’t a detail, its the riskiest part of the entire process.

Care instructions are a way protect us after we’ve left. At some point, we have to hand over the project and say goodbye. But the actual lifespan of that room depends on people who may have no idea what zellige is, what Fabric Code “S” means, or why one cleaner is safe for a sofa but disastrous for a rug. We can’t control what happens after installation, but we can mitigate it. A well-written care guide is our last chance to protect all the decisions that came before. Because the final inch of a design project isn’t always install day. Sometimes it’s whether someone caring for the home six months later can preserve what you created.

Punch lists might be the most emotionally charged version of the final inch. By that point, clients have invested a tremendous amount of time and money into the process, and they expect a perfectly finished project. And honestly, that expectation is reasonable. If you buy a new car, you’re not going to drive it off the lot with a scratch that needs to be buffed out.

Construction, of course, doesn’t work that way. Contractors are busy, their subs are on new jobs, and somehow the designer ends up standing in the middle. The project may be 99% complete, but that last 1% often becomes the part everyone remembers and these are the moments that can color a client’s impression of the entire project.

The lesson for me isn’t that we can control every final inch because we can’t. But as business owners, we can identify the parts of our process where the stakes are highest and be as prepared as possible. When we know we’re entering one of those high-risk moments, we can set expectations, communicate clearly, and remind clients that some parts of the process are inherently unpredictable.

Usually protecting the final inch isn’t about preventing problems. It’s about preparing people for them and having plans in place to make things right for our clients. And when everything goes according to plan, maybe the best outcome is that nobody notices the last steps at all.