Design-build coordination is the process by which an interior designer manages the relationship between design intent and construction execution: reviewing contractor submittals, conducting site visits, and resolving field conflicts before they become expensive mistakes. Without active designer involvement during construction, even well-specified projects routinely deviate from design intent in ways that are costly to correct after the fact.
The deviation is rarely dramatic. It is a tile setter starting a layout from the wrong wall so the field lands in a two inch sliver at the shower niche. It is an electrician centering a sconce on the stud rather than on the mirror. It is a cabinet shop substituting a hinge because the specified one carries a twelve week lead time. Each decision is reasonable in isolation, and each one gets made without the drawing in front of the person making it.
Coordination is mostly presence and paper. Submittals get checked against the written specification rather than approved on sight. Site visits are timed to the moments when a decision is still reversible: before tile layout, before rough-in, before drywall closes a wall. Field questions get answered in writing, so the answer survives a crew change and does not have to be relitigated three weeks later.
Timing is the whole discipline. A conflict caught at framing costs an hour of conversation. The same conflict caught after tile costs a demolition crew, a reorder against a lead time nobody has slack for, and a schedule that slips into the next trade. Most of what this role saves a client is not taste. It is rework.
We are not the general contractor, and that distinction is worth stating plainly. The builder owns means, methods, schedule, and safety. Our role is to protect the design through the build, and to make sure the fast answer is also the right answer, because on an active job site the question is going to get answered by somebody either way.
If you already have a builder and want design oversight rather than a full scope, that is an ordinary shape for a design consulting engagement. Our homeowner guide to what an interior designer actually does lays out where this work sits in a project.