
Interior Trim
Baseboards, door and window casings and trim details, installed with tight miters and consistent reveals.
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Finish Carpentry · Quincy, Massachusetts
Professional finish carpentry, deck finishing, doors, windows, trim and custom built-ins based in Quincy and serving Massachusetts and New England.
Masterline Carpentry INC
Framing gets covered up. Trim, doors, windows, built-ins and deck railings are what you see and touch every day. Masterline is an owner-operated finish carpentry company in Quincy, MA, focused on that final layer: tight joints, straight lines and a clean job site at the end of every day.
Work areas protected and cleaned at the end of every day.
You know what’s happening, when we’ll be there and what comes next.
Start dates we can keep, and a heads-up if anything changes.
A detailed written scope and price, sent by email before any work begins.
Services
Residential finish work for homeowners, and dependable finish carpentry for the builders and remodelers who hire us.

Baseboards, door and window casings and trim details, installed with tight miters and consistent reveals.
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Doors hung plumb and square, adjusted to close cleanly, and finished with matching casing.
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Window installation and the interior trim that finishes it: stools, aprons, casings and extension jambs.
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Bookcases, wall units, mudroom benches and shelving, built to fit the room they’re in.
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Composite decking, railings, stairs, fascia and trim: the finish layer that makes a deck look complete.
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Small carpentry repairs and punch list items, handled with the same care as a full project.
Learn moreAlso available: LVP and hardwood flooring installation
Portfolio
Before & After
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How a project runs
Send a few details through the form, or call.
We go over the project with you, on site when it calls for it.
You receive a written estimate by email, with the full scope spelled out.
A confirmed start date, protected work areas and daily clean-up.
We walk the finished work with you before we call it done.
For contractors
Masterline works with general contractors, builders, remodelers and other trades, and we value long-term working relationships.
Free estimate
Send a few details about the job. We’ll follow up to talk through the scope, schedule and price.