Licensed & insured general contractors · Broward · Miami-Dade · Palm Beach
Custom Carpentry & Finish Work project by 12X Construction

Interior Renovations

Custom Carpentry & Finish Work

Built-ins, trim, and millwork made on site to fit your house exactly.

Finish carpentry is what makes a renovation look expensive. Built-in shelving, entertainment walls, wainscoting, coffered ceilings, closets, and stair details, scribed to walls that are never perfectly square, with joints that stay tight.

Typical timeline

3 days–4 weeks

Typical investment

Built-ins commonly $2,500–$18,000; trim packages quoted per linear foot

Get a custom carpentry & finish work estimate

Free on-site visit, written scope, no obligation.

More details (optional): timeline, budget, notes
Your details stay private No obligation, no pressure Prefer to talk? (954) 621-6218
Licensed & insured
20+ years in the trades
Fixed written scope & price
Permits pulled & closed
Built on word of mouth
In-house crews, no subs roulette
Line-itemed estimates
Workmanship warranty in writing
Licensed & insured
20+ years in the trades
Fixed written scope & price
Permits pulled & closed
Built on word of mouth
In-house crews, no subs roulette
Line-itemed estimates
Workmanship warranty in writing

How we approach it

Detail work that defines the character of your home

Standard, off-the-shelf trim and shelving often look out of place in a home where no wall is truly square. Custom carpentry is about creating elements that fit your specific space perfectly, hiding imperfections and adding architectural interest where there was none before.

We specialize in built-ins and finish work that look like they were part of the original house design. Whether it is a coffered ceiling, a custom mudroom bench, or an entertainment wall, we focus on the joinery and the finish to ensure a furniture-grade result.

Our carpenters work with a mix of traditional techniques and modern materials. We know how to scribe a baseboard to a wavy floor and how to build a bookcase that will never sag. We handle everything from the initial design and measurements to the final coat of paint or stain.

Custom Carpentry & Finish Work project in South Florida
Representative project photo

When to call

Signs it's time

  • Empty alcoves or niches that feel like wasted space in your home
  • Plain, boxy rooms that lack architectural character or focal points
  • Mismatched or cheap-looking baseboards and door casings
  • A need for organized storage that stock furniture cannot provide
  • Old fireplace surrounds that no longer match your interior style
  • Staircases that feel dated with worn railings and basic balusters
Custom Carpentry & Finish Work work in progress

What the work involves

The breakdown

01

Design and templating

Taking precise measurements and creating a layout that maximizes your space and matches your style.

02

Material selection and prep

Sourcing high-quality hardwoods, MDF, or plywood and prepping them for installation.

03

Structural framing and install

Building the internal carcass of built-ins and securing them to the wall studs for safety.

04

Trim and detail work

Adding crown molding, baseboards, and decorative panels to create a finished look.

05

Professional finishing

Filling nail holes, caulking joints, and applying a high-quality paint or stain finish.

Step by step

How a custom carpentry & finish work job runs

  1. 11 day

    Consultation and measure

    We discuss your needs and take exact field measurements of the space.

  2. 21-2 weeks

    Design and shop prep

    Components are cut and partially assembled in our shop to minimize time in your home.

  3. 32-5 days

    On-site installation

    The main structure is installed, leveled, and secured to your walls.

  4. 41-3 days

    Detailing and trim

    Decorative elements and doors are added and perfectly adjusted.

  5. 51-2 days

    Filling and sanding

    Every joint is perfected and prepped for the final finish.

  6. 62-3 days

    Final paint or stain

    The project is finished to match your home's existing aesthetic.

Choices

Options we'll walk you through

Custom entertainment walls

Built-in units designed to house TVs, components, and book collections

Best for: Living rooms and home theaters

Coffered and tray ceilings

Adding depth and architectural interest to flat ceilings with wood beams

Best for: Dining rooms and master bedrooms

Wainscoting and wall paneling

Protective and decorative wood panels for the lower or full half of a wall

Best for: Entryways, hallways, and formal rooms

Custom closet systems

High-efficiency storage solutions built to fit your specific wardrobe

Best for: Master closets and pantries

Example project

Custom library and fireplace surround

Parkland, FL3 weeks

The challenge
A homeowner had a large, two-story living room that felt cold and empty, with a basic builder-grade fireplace.
What we did
We designed and built a 15-foot-tall library wall with a rolling ladder and integrated a new stone fireplace surround with a custom walnut mantel.
The result
The room is now the centerpiece of the home, providing both incredible storage and a warm, inviting atmosphere that perfectly fits the scale of the space.

Illustrative example based on typical jobs of this type.

Standards we hold

  • All built-ins are scribed to the walls and floor for a gap-free fit
  • We use hidden fasteners and pocket-hole joinery for a clean look
  • Cabinet doors are installed with soft-close, adjustable hinges
  • Heavy units are anchored directly to structural studs, never just drywall
  • We use paint-grade MDF for a smooth finish and hardwoods for stained work
Close-up of finished white built-in shelving and crisp window trim in a South Florida home

The detail

The details that give it away

Built-in shelving and trim returns

Tight mitres, clean caulk lines, painted finish with no visible fasteners. This is where custom work shows.

Representative example

What's included

Our custom carpentry & finish work scope

  • Built-in cabinetry, bookcases, benches, and entertainment walls
  • Crown molding, baseboards, casings, wainscoting, and picture-frame paneling
  • Coffered, tray, and beam ceiling details
  • Custom closet systems, pantries, and garage storage
  • Stair treads, risers, railings, and newel details
  • Shop-quality on-site finishing, filling, caulking, and paint prep

Questions we get about custom carpentry & finish work

How it works

What happens after you call

01

Free on-site visit

We come out, measure, photograph, and listen. You get straight answers about what's possible and what it really takes, usually within 24–48 hours of your call.

02

Line-itemed proposal

A written scope with materials, allowances, timeline, and payment schedule. You see exactly what you're buying before you commit to anything.

03

Selections & permits

We help you pick finishes that hit your budget, then handle drawings, permits, HOA packets, and inspections so nothing stalls the job.

04

Build with daily updates

Dedicated crew, protected work area, photo updates, and a single project manager you can reach directly at any point.

05

Walkthrough & warranty

We walk the job with you, fix every punch-list item, close the permit, and hand over your written warranty and care instructions.

Our commitments

Put in writing on every project

Fixed written scope & price

Every estimate is line-itemed before a single tool comes out of the truck. No mid-project surprises, no vague allowances.

One accountable project manager

You get one direct number, one person who knows your job, and daily progress updates, not a call center.

Licensed, insured, permitted

Licensed general contracting, full liability and workers' comp coverage, and permits pulled and closed out properly.

Workmanship warranty

Written warranty on our labor plus full manufacturer warranties on the materials we install.

Clean, respectful crews

Floor protection, dust containment, daily cleanup, and crews that treat an occupied home like an occupied home.

On-schedule or we tell you first

A real timeline with milestones. If anything shifts, you hear it from us before you notice it yourself.

Client feedback

Referred, again and again

“They gutted and rebuilt two bathrooms and our kitchen while we lived in the house. Every day the site was clean, every question got answered the same day, and the final number matched the estimate.”
Daniel R. · Fort Lauderdale, FL · Kitchen + 2 bathroom remodel
“We had water damage behind a wall that two other contractors misdiagnosed. 12X found it in an hour, handled the drying, rebuilt the drywall, and dealt with the insurance paperwork.”
Melissa T. · Hollywood, FL · Water-damage restoration
“Pavers, a pergola, an outdoor kitchen, and turf, done in five weeks and permitted properly. Our backyard is the reason we stopped talking about moving.”
Andre & Sofia P. · Coral Springs, FL · Full backyard renovation
“We turn over rental units on tight deadlines. They have never once missed a make-ready date, and their punch lists are cleaner than anyone we've used.”
Property manager · Miami, FL · Property turnover program

Free, no-pressure estimate

Ready to price your custom carpentry & finish work project?

Free on-site visit, written line-itemed estimate, no pressure. Most visits are scheduled within 24–48 hours.

Licensed & insured 5-star word-of-mouth Written fixed price