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Finish Carpentry in Frederick & Central MD
Door casing and window trim
Casing is repetition. Twelve openings in a house means twelve chances for the reveal to wander, and the eye catches the one that did.
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Quick answer
How much does door casing cost per opening in Maryland?
Door casing runs $90 to $250 per opening installed, with material grade and profile size driving most of the range. Window casing with a sill and apron is $120 to $320 and a picture-frame surround $90 to $240. Jamb extensions, where the wall is deeper than the jamb, add $45 to $140 per opening — common enough that we check depths before quoting rather than after.
The work
What casing and trim actually involves.
Door and window casing is the trim people do not consciously notice and unconsciously judge. The thing that makes it read as well done is consistency: the reveal — the strip of jamb left showing inside the casing — has to be the same on every opening in the house. Three sixteenths of an inch on eleven doors and a quarter on the twelfth is the kind of detail nobody can name and everybody registers.
The practical obstacles are usually the wall rather than the trim. Walls finish at different depths, especially where drywall has been patched or an older plaster wall meets newer work, and a jamb that sits proud or shy of the finished wall surface makes the casing impossible to fit flat. The fix is jamb extensions — timber added to bring the jamb out flush — and it is routine work that an inexperienced installer discovers halfway through and either fudges or charges extra for. We check depths at the estimate.
Windows add their own decision, which is whether to case them at all. A drywall return — where the drywall wraps into the window opening with no trim — is a clean modern look and it is a drywall job rather than a carpentry one. Cased windows with a sill and apron are traditional and are what most Frederick County houses want. Picture-framed casing, with four equal sides and no sill, sits between the two. All three are correct; which one is right depends on the house, and we will say what we think rather than fitting whatever is quickest.
Reveal set consistent across every opening
Jamb extensions where the wall is deeper than the jamb
Plinth blocks and head casing where the style calls for it
What casing and trim costs in Maryland
Maryland trim work, installed, priced per opening because that is how the work divides. Material grade moves these ranges more than anything else.
- Door casing, per opening
- $90 – $250
- Window casing with sill and apron
- $120 – $320
- Picture-frame window casing
- $90 – $240
- Jamb extensions, per opening
- $45 – $140
- Plinth blocks and built-up head casing
- +$60 – $180 per opening
- Removing existing casing
- $20 – $55 per opening
Ranges, not quotes. Real numbers come from a walkthrough — access, condition, height and finish level move a price more than square footage does. Estimates are free and in writing.
Get your numberFull casing and trim cost guide for MarylandPrefer to just talk?
Call and describe the job. You’ll get a straight answer on whether it’s something we do and roughly what it runs.
(301) 524-1729
Self-performed
Door casing and window trim
What’s included
Everything the casing and trim scope actually covers.
Written into the estimate, not assumed. If something on your job is not on this list, it gets priced and named before anyone starts.
Reveal set and held across the house
01One reveal dimension chosen and held on every opening, marked rather than eyeballed. This is the single detail that makes casing read as professional, and it is the one that most often drifts when openings are fitted on different days by different hands.
Jamb depths checked and extended
02Every jamb measured against the finished wall depth before any casing is cut, and extensions fitted where the wall is deeper — common where plaster meets drywall or a wall has been furred out. Found at the estimate rather than discovered mid-job.
Window treatment decided deliberately
03Cased with a sill and apron, picture-framed on four sides, or left as a drywall return — chosen against the house and the room rather than defaulted. Each is a different look and a different price, and the choice is yours to make with our opinion in hand.
Plinth blocks and head casing where appropriate
04Where the style supports it, plinth blocks at the base and a built-up head casing above, which resolves the awkward junction between a tall baseboard and a thinner casing far better than a mitre does. Not fitted everywhere — it suits some houses and looks fussy in others.
Openings made good first
05Drywall at the opening patched and squared, old casing removed without tearing the wall face, and the substrate made sound before new trim goes on. In a pre-1978 house we treat existing painted casing as lead-bearing and work to that standard.
Filled, caulked and ready for paint
06Nail holes filled, mitres dressed, the outer edge caulked to the wall, and the house cleaned down. Casing is repetitive enough that it is worth painting as one operation afterwards rather than opening by opening.
On the job
Finish Carpentry work across Frederick & Central MD.
What the trade looks like at each stage. Photos of our own recent jobs come out at the walkthrough, on the actual house.
Straight answers
Casing and trim questions
Not covered here? Call and ask — you’ll get a real answer, not a “depends on the job”.
The reveal is the narrow strip of door or window jamb left visible inside the casing, usually about three sixteenths of an inch. It matters because consistency is what the eye reads as quality — the same reveal on every opening in a house looks deliberate, and one opening set differently looks wrong without anybody being able to say why. We mark it rather than judging it by eye.
Both are legitimate. A drywall return — where the drywall wraps into the opening with no trim — reads clean and modern and is a drywall job rather than a carpentry one. Cased windows with a sill and apron are traditional and suit most houses around Frederick. Picture-frame casing sits between them. We will tell you what we think fits the house and the rest of the trim.
Usually closely, sometimes exactly. Older profiles are often no longer stocked, but many can be reproduced by combining current mouldings or by having a knife ground, and the difference at a distance is frequently invisible. Where it cannot be matched well, casing a whole floor consistently in a sympathetic profile looks better than one near-miss opening among originals.
Same crew, same visit
The rest of the finish carpentry work.
Most finish carpentry jobs are two or three of these at once, which is why they are priced and scheduled together rather than as separate call-outs.
From the field
Read up before you book.
Longer answers than a quote page has room for — how the work fails, what putting it right actually involves, and when waiting is the honest call.
Sources worth your time
Check us, and check the work
None of these are ours. They are the offices and standards bodies that set the rules we work to, so you can verify what we say rather than take it.
National Association of Home Builders
Where the residential-construction standards and material research behind these decisions are published.
OpenEPA Renovation, Repair and Painting rule
Any house built before 1978 has lead rules attached to disturbing paint. This is the rule itself.
OpenMaryland Home Improvement Commission
Check any Maryland contractor's licence before you sign. Ours is on file with the Commission.
Open
Talk to the people doing the work
Get a straight number for the whole job.
Tell us what needs doing. We’ll walk it with you, sequence every trade it touches, put the price in writing, and leave you to decide.
Get a quote
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Tick as many as you like. Most jobs are two or three of them at once, and I sort out the detail when I come and look. Nobody gets turned away for choosing the wrong box.
