Definition
Millwork is any wood product made in a mill or shop for a building’s interior, such as trim, moldings, doors, paneling, built-ins, and custom cabinetry.
Millwork, Explained
The term comes from wood that was milled, cut and shaped by machine, rather than framed on site. Today it covers both standard pieces (baseboard, casing, crown molding) and custom work built to fit a specific space (built-in bookcases, wainscoting, reception desks, window seats).
Stock millwork is bought off the shelf in standard profiles. Custom millwork is drawn, built in a shop, finished, and then installed by finish carpenters on site.
In commercial spaces, millwork often means reception desks, wall paneling, and break room cabinetry. In homes, it’s trim, built-ins, and paneling that give rooms character.
Why It Matters for Your Project
Millwork is one of the most visible parts of a finished space. Custom pieces also have long lead times, so they need to be designed and ordered early in the schedule.
What to Watch For
- Order custom millwork early; shop drawings and fabrication take weeks.
- Approve shop drawings carefully: they’re what gets built.
- Match new trim to existing profiles in older homes where possible.
- Decide between paint-grade and stain-grade; it changes material and cost.