Trim Carpentry Cost: Baseboard, Casing and Crown

How to measure linear feet of trim

This is the most useful thing you can do before you call anyone. Contractors quote trim by the linear foot, so walking in with a measured number lets you compare bids directly instead of guessing at whose assumptions differ.

Work room by room, and keep a separate running total for each type of moulding, because baseboard, casing and crown are priced and installed differently. Measure along the run, at the wall, and ignore ceiling height entirely.

For baseboard, take the perimeter of the room: add up the length of every wall at floor level. For a 14 by 16 foot room that is 2 x (14 + 16), or 60 linear feet. Then subtract the width of every doorway and cased opening, because baseboard stops at the casing. A standard 3 foot doorway removes about 3 feet, so two doorways bring that room down to 54 linear feet of baseboard. Do not subtract windows: baseboard runs underneath them.

For crown moulding, take the same perimeter but subtract nothing. Crown runs unbroken around the ceiling line, straight over the top of every door and window. That 14 by 16 room is 60 linear feet of crown.

For door casing, measure the two legs and the head of each opening. A standard 6 foot 8 inch door in a 3 foot opening needs roughly 7 feet per leg plus about 3.5 feet across the head, so about 17.5 linear feet per side. Interior doors are almost always cased on both sides, so one doorway between two rooms is about 35 linear feet. This is the number that surprises people most, and it is why door count drives a trim quote harder than room size does.

For window casing, measure around the opening the same way, then add the stool and apron if the window gets them. A 3 by 5 foot window is about 16 linear feet per cased side. For wainscoting and picture-frame moulding, measure the perimeter of each panel frame and add them up, plus the cap rail and any chair rail, because these are installed as sticks of moulding rather than by wall area.

Add 10 to 15 percent to your measured total before buying material. Every miter, scarf joint and mistake eats stock, and moulding comes in fixed lengths such as 8, 12 and 16 feet. A 17 foot wall needs two sticks and a scarf joint regardless of how carefully you cut.

What you are paying for per linear foot

The estimator splits every trim job into three lines. Materials are the moulding itself and run from $2.20 per linear foot for primed poplar and MDF, to $4.50 for select oak or walnut profiles, to $11.00 for premium hardwood, built-up crown assemblies and custom millwork.

Consumables are $0.30 per linear foot. That is finish nails, construction adhesive, wood filler, caulk, sandpaper and masking tape, and it is real money on a large job rather than a rounding error.

Labor is 0.06 hours per linear foot at $75 per hour, which works out to $4.50 of labor per linear foot. Notice that labor alone costs more than basic moulding. On a 200 linear foot job that is 12 hours and $900, and it is the same 12 hours whether you install painted MDF or walnut. A 10 percent contingency then sits on top of all three lines.

The practical takeaway: upgrading your material tier buys you nicer trim, not a longer job. Going from basic to premium moulding on 200 linear feet adds about $1,760 in material, while the labor line does not move at all in the base model. Adding more linear feet, on the other hand, adds both.

At the rates in this tool, labor and consumables together come to $4.80 per linear foot before any material. That is your floor. A quote materially below it is either using cheaper labor than this baseline assumes or is not counting something.

What drives trim carpentry cost up or down

Profile complexity is the biggest lever after linear footage. A single-piece colonial baseboard goes on in one pass. A built-up crown assembly of three separate mouldings is effectively three runs of trim in the same location, each with its own miters, so it costs roughly what three simple runs cost even though the wall length has not changed.

Corner count matters more than wall length. Miters and coped inside corners are the slow part; a long straight run is the fast part. A room with a bay window, an alcove and a chimney breast can take close to twice the hours of a plain rectangle with the same perimeter.

House condition sets the difficulty. Older homes rarely have square corners, flat walls or level floors, and a good trim carpenter absorbs that with shims, scribes and back-bevels. That work is invisible when it is done right.

Finish is a separate decision with real cost consequences. Paint-grade trim can be filled, caulked and painted on site, which hides small gaps. Stain-grade hardwood cannot: every joint shows, so the carpentry has to be tighter and the hours go up even though the linear footage is identical.

• Number of doors and windows, since each cased opening is 15 to 35 linear feet on its own
• Ceiling height, which adds staging time for crown and lengthens casing legs on tall doors
• Built-up multi-piece profiles versus single-piece stock
• Paint-grade versus stain-grade finish expectations
• Whether old trim has to be pried off, and whether the wall behind it survives
• Wainscoting layout, which requires setting out panel spacing before a single cut
• Built-ins and shelving, which are cabinetry hours rather than running-trim hours

Baseboard, casing, crown and wainscoting compared

Baseboard is the cheapest trim per linear foot to install. It is at a comfortable working height, the runs are long, and inside corners get coped rather than mitered, which is fast for someone practiced.

Door and window casing is more work per linear foot than the number suggests. The runs are short, every piece needs two accurate cuts, and the reveal has to stay consistent all the way around the opening or the eye catches it immediately.

Crown moulding is the hardest of the running trims. It sits at an angle to both the wall and the ceiling, so its miters are compound cuts, and neither surface is likely to be straight. It is also overhead work from a ladder. If you are pricing one upgrade to make a room look finished, crown gives the most visible change per linear foot and carries the most risk of a bad result.

Wainscoting and picture-frame moulding are layout jobs before they are cutting jobs. The panels have to be spaced so they look deliberate around outlets, switches, doors and corners, and getting that wrong is obvious from across the room. Built-in shelving sits outside running-trim pricing entirely, since it is closer to cabinetmaking.

DIY versus hiring a trim carpenter

Trim is one of the more approachable trades to attempt, because a mistake costs a stick of moulding rather than a flooded floor or a failed inspection. It is also one of the least forgiving visually, since it sits at eye level in finished rooms and gaps at the miters are exactly what people notice.

Baseboard in a simple painted room is a reasonable first project. The corners are coped or cut at 45 degrees, caulk and filler forgive small errors, and the work is at a comfortable height. Budget for a miter saw and a nailer, whether you buy or rent, and expect your first room to take several times the 0.06 hours per linear foot this estimator assumes for a professional.

Crown moulding and stain-grade hardwood are where most people should stop. Compound miters on out-of-square corners take practice to get right, and stain-grade work cannot be caulked into looking correct. At $11.00 per linear foot, every ruined cut is expensive practice.

The arithmetic on the 200 linear foot default is straightforward: labor and consumables come to about $960, so a full DIY job saves roughly that, minus whatever the tools cost you. If you hire out only the crown and do your own baseboard, you keep the cheap hours and buy the difficult ones.

Trim carpentry itself does not typically require a permit or a licensed trade. But if the project also moves a wall, alters framing, or relocates outlets and switches behind new wainscoting, those parts fall under building codes and usually require permits and licensed trades. Requirements vary by jurisdiction, so confirm with your local building department before you start rather than after.

Before nailing into a wall for wainscoting, a chair rail or a built-in, know what is behind it. Electrical cable, plumbing supply lines and gas piping all run through stud bays. Use a stud finder with live-wire detection and keep fasteners short enough to catch framing without reaching services.

Using these numbers when you get quotes

Everything on this page is a planning baseline built from the estimator dataset, not a quote. Labor rates and moulding prices vary by region, so get two or three written bids before you commit.

When you compare them, make sure each bid states the same linear footage, the same profiles, and the same finish expectation. A bid that is cheaper because it assumes single-piece crown against a competitor pricing a three-piece built-up assembly is not actually cheaper.

Confirm who paints or stains, and when. Priming and finishing moulding before it goes on the wall produces a better result and is sometimes quoted separately. Also confirm whether removal and disposal of the existing trim is included, since prying off old baseboard often takes drywall paper with it and the patching has to land in one scope of work or the other.