If you love the look of custom built-ins but not the custom price tag, an IKEA Pax hack might be one of the smartest DIY projects you can do in your home.

With a few design upgrades — like trim, arches, fluted panels, and statement paint — you can turn basic IKEA wardrobes into designer-looking built-ins that feel completely custom.

I’ve used this exact approach in my own playroom makeover, where I transformed simple Pax units with fluted drawer fronts and an arched built-in surround — and the result looks like custom millwork.

If you’re planning a storage wall, closet upgrade, or playroom built-in, these ideas will help you elevate IKEA Pax into something that looks truly high-end.

Why IKEA Pax Is the Perfect Base for Built-Ins

The reason Pax hacks go viral over and over again is simple: the system is incredibly versatile.

IKEA Pax units come in multiple heights, widths, and interior configurations, which makes them ideal for creating custom-looking storage walls.

Instead of building cabinets from scratch, you’re essentially using Pax as the structural base and adding design elements on top.

That means you get:

• Built-in storage

• A custom millwork look

• And a much lower budget than fully custom cabinetry

It’s one of the most impactful DIY upgrades you can make.

1. Extend the IKEA Pax to the Ceiling for a Built-In Look

One of the easiest ways to make Pax wardrobes look custom is by eliminating the gap at the top.

When wardrobes stop short of the ceiling, they immediately read as furniture rather than built-ins.

To create a seamless look, you can:

• Build a simple wood frame above the units

• Add drywall or MDF panels

• Finish with crown molding

Once painted, the wardrobes look like they were designed as part of the home.

This single change instantly makes the entire installation feel higher-end.

2. Create an Arched Built-In Opening

If you want something even more architectural, consider adding an arched surround.

This is the design detail I added in my playroom, and it completely elevated the space. You can find the detailed blog post here.

Instead of a standard rectangular opening, framing the Pax units inside an arch creates the look of custom millwork or niche cabinetry.

To create an arch, you can:

• Frame the opening with 2x4s

• Cut the arch shape using plywood or MDF

• Attach flexible trim or bendable MDF to create the curve

Once painted, it creates a soft, architectural detail that looks far more expensive than it actually is.

Arches have been one of the most viral design trends on Pinterest, especially in built-in storage projects.

3. Upgrade Drawer Fronts With Wood or Fluted Trim

Basic Pax drawer fronts are functional but fairly simple.

One of the easiest ways to customize them is by covering the fronts with decorative wood trim or fluted panels.

This is the exact approach I used in my playroom makeover, where I added fluted trim to the drawer fronts for texture and dimension.

Other options include:

• Vertical wood slats

• Flat wood overlay panels

• Cane webbing inserts

• Reeded or ribbed trim

These upgrades give drawers a custom furniture feel while adding warmth and visual interest.

Fluted and ribbed textures in particular have been trending heavily in interior design and perform extremely well on Pinterest.

4. Add Decorative Trim to the Cabinet Frames

Trim work is one of the biggest secrets to making IKEA furniture look custom.

You can add trim around the wardrobe edges or between units to mimic the look of built-in cabinetry.

Some simple upgrades include:

• Shaker-style trim on flat panels

• Thin vertical molding between cabinets

• Baseboards across the bottom

• Crown molding at the top

These details make the installation feel like it was built specifically for the room. For my cabinets, I chose a thin picture rail molding in this fun silhouette. It was really simple to cut with miter shears and install using liquid nails.

5. Use “Look for Less” Designer Hardware

Hardware can completely change the feel of IKEA cabinets.

Swapping out basic pulls for designer-inspired hardware instantly upgrades the entire piece.

Some popular options include:

• Long brass bar pulls

• Vintage-style knobs

• Oversized statement handles

• Leather cabinet pulls

Even budget-friendly hardware can mimic high-end brands and elevate the look dramatically.

It’s a small change that has a big impact. For my playroom drawers, I chose knobs for the top drawers and long pull bars for the bottom.

6. Paint the Cabinets a Standout Color

Another way to make Pax wardrobes feel custom is by painting them.

Instead of standard white, try a bold or unexpected color to create a focal point. Painting the cabinets — and the surrounding trim — the same color creates a cohesive built-in effect. For my cabinets, I chose to paint the inside a darker green (SW Forest Wood) and the outside a lighter shade of green (SW Evergreen Fog) which I think really helped to elevate the look and give them extra dimension.

Color drenching is especially popular right now and gives the installation a designer feel.

7. Create Open Shelving Sections

Mixing closed storage with open shelving makes Pax installations look more intentional.

You can remove some doors or drawers to create styled shelving areas.

These are perfect for displaying:

• Books

• Baskets

• Kids toys

• Framed art

• Decorative objects

The contrast between closed storage and styled shelves makes the entire wall feel more curated.

8. Add Lighting for a High-End Finish

Lighting is one of the most overlooked ways to elevate IKEA built-ins.

Consider adding:

• LED strip lighting inside shelves

• Small puck lights

• Picture lights above the cabinets

Lighting makes the installation feel more custom and highlights decorative styling. I hung wall sconces above the cabinets and added remote-controlled puck lights inside to create a warm, custom feel.

Final Thoughts

If you’re dreaming of custom built-ins but working with a real-life budget, IKEA Pax wardrobes are an incredible starting point.

By adding architectural details like arches, trim, fluted drawer fronts, and ceiling extensions, you can create storage that looks completely custom.

The best part is that every project can be tailored to your space — whether it’s a playroom, closet, home office, or living room.

And once you start customizing IKEA furniture, it’s hard not to want to hack everything.

Supplies

• Ikea Pax Units
• Ikea Drawers (Komplement)
• Fluted Trim
• PVC Trim
• Liquid Nails
• Ryobi Brad Nail Gun
• Ryobi Jig Saw
• Ryobi Miter Saw
• MDF Board
• Caulk
• Caulk Gun (for liquid nails too!)
• Wood Filler

Decor

• Nugget Couch (in willow)
• Sconces
• Rug
• Bins
• Light Fixture (Similar- mine from Anthro is out of stock)
• Knobs (playroom)
• Pulls (playroom)
• Pulls (mudroom)