Millwork and casework
No survey breaks millwork and casework out on its own, so there's no margin figure to publish and this page doesn't invent one. What it has is 6 mechanisms that cost millwork and casework contractors money, and the step that fixes each.
CFMA reports at NAICS level, and millwork and casework rolls into 238350 Finish Carpentry along with several other trades. It isn't in the 48-trade master reference either. Every figure on this site traces to one of those two sources, so publishing a margin for millwork and casework would mean making it up. The nearest published context is the interiors and finishes group, which runs 18% to 22% gross margin and 5% to 8% net profit at $1M–$5M.
6 problems specific to millwork and casework
You spent five weeks on drafting, submittals, and veneer samples, none of it reached a pay application, and the architect decided when that window closed. Your panel goods, hinges, and slides were priced at bid and bought a quarter or two later, and since 14 October 2025 a duty layer sits on top of that delay. The casework is finished, wrapped, labeled, and standing on your floor, and the standard payment clause says none of it counts until it reaches the site. Base cabinets go in first, tops follow, doors and hardware wait on paint, and touch-up closes it out.
Each one below points at the item, the unit, the clock, or the party that makes it a millwork and casework problem, and it says which step fixes it.
| Mechanism | Why it's specific to this trade | Step |
|---|---|---|
| Your Shop Drawings Are Payroll With No Pay App | A trade that mobilizes the week it wins starts producing installed, billable work immediately. A millwork shop has to design the product before the product exists, because it doesn't exist until your drafter draws it and an architect signs it. That makes engineering a production department with its own payroll sitting entirely on the wrong side of the first pay application. | Job cost structure |
| You Bid Plywood in March and Buy It in September | A sub that mobilizes the week it's awarded buys close to bid pricing, because only days separate the two. Millwork can't buy until drawings are approved, which makes this trade's exposure window structurally longer than almost anyone else's on the job. The tariff line points straight at HTSUS 9403 cabinets, vanities, and their parts, which is the product coming off your floor. | Estimating system |
| Built, Boxed, and Not Billable Until It Leaves the Shop | Most subs produce and bill in the same building, so their payment clause and their work sit in the same place. Millwork produces in one building and bills against another, and A201 was written around the second one. That mismatch is why a shop can be stacked wall to wall with finished, profitable product and still be tight on Friday. | Job cost structure |
| One Install Line, Five Trips to the Same Building | Most trades come in, install, and leave the building for good. Millwork installs last, into a jobsite that's still active, and its product is the visible finished surface every remaining trade walks past with a ladder. That makes every scratch, ding, and misaligned door a millwork punch item whether or not your crew ever touched it. | Project management |
| Doors Line Up at Closeout and Move by February | Wood is the only material on the job that changes dimension after the owner accepts it. A painted wall doesn't move when the humidity drops, while a run of full-overlay doors on a 3/32 reveal does, and it's visible from across the room. The callback comes back to your shop because your product is the only thing in the building anyone can watch move. | Overhead calculation |
| Three Spec Lines That Cost You Before You Bid | Other trades pick up their specification cost off the drawings, where an estimator is already looking. Millwork picks it up in Division 06 text: a certification program, a grade designation, and a three-letter note beside a hardware schedule. None of those has a quantity to take off, so they go missing in the shops that are best at counting sheets. | Estimating system |
Other interiors and finishes trades
What owners ask
What gross margin should a millwork and casework contractor run?
Millwork and casework isn't broken out in any published benchmark, so there's no honest figure to give you. CFMA reports at NAICS level and this trade rolls into 238350 Finish Carpentry, which mixes it with several others. The interiors and finishes trades that are published run 18% to 22% gross margin at $1M–$5M, and that band is the closest context available.
Why does this page have no benchmark table?
Because publishing a number nobody surveyed would be inventing it. Every figure on this site traces to CFMA or to the 48-trade master reference, and millwork and casework is in neither. The mechanisms below are what this trade loses money on, and those don't depend on a survey.
What costs a millwork and casework contractor the most money?
Your Shop Drawings Are Payroll With No Pay App. You spent five weeks on drafting, submittals, and veneer samples, none of it reached a pay application, and the architect decided when that window closed. That's one of 6 on this page, and 2 of the 6 resolve to step 01, job cost structure.
Which steps does millwork and casework keep landing on?
step 01 job cost structure on 2 of them, step 04 estimating system on 2 of them, step 06 project management on 1 of them, step 03 overhead calculation on 1 of them. That distribution is the install order for this trade, because the step carrying the most mechanisms is the one holding the most money.
What should a millwork and casework contractor use instead?
Work the mechanisms on this page first, since they're specific and actionable. For a rough sense of the economics, read the interiors and finishes group, which is the nearest published context. Your own job costing beats any industry average once step 01 is installed.
Everything on this page is something you can install yourself, andCONTROL is the order to do it in. If you would rather buy the finished result, SPM The Construction CFO does this work for millwork and casework contractors as a service. It is a separate firm, Sulphur Prairie Management, LLC, run by the same author.
Wrote CONTROL, the 8 step system these figures sit inside. More about the author.