Upgrading your interior trim is the absolute best way to make a basic room look expensive and custom. Whether you want to add character to a new build or highlight historic details, these molding and trim setups are easy to replicate in your own space.

1. Color-Drenched Baseboards

A moody, enveloping look comes together instantly when you paint your baseboards and crown molding the exact same dark color as your walls. This technique erases the harsh visual break lines that standard white trim usually creates. It makes low ceilings feel surprisingly tall because your eye just keeps moving upward without interruption. I love doing this in bedrooms or small dens to create a cozy, jewel-box effect. You can use a satin finish on the trim and a matte finish on the walls to add just a tiny bit of subtle contrast.

2. Craftsman Window Casings

Standard builder-grade window casings are often too narrow to make any real visual impact. Swapping them out for chunky, flat-stock window trim instantly gives a room a modern craftsman vibe. You just frame the window with wide, straight boards and top it with a slightly deeper header piece.

It completely changes the room's architecture without touching a single wall.

3. Classic Chair Rail

I always tell my clients not to overlook the power of a simple chair rail. Placing it about a third of the way up the wall grounds the space and gives you a perfect natural break for two-tone paint. It also protects your drywall from dining chairs or hallway traffic.

4. Picture Frame Molding

A truly classic and elevated aesthetic starts with traditional picture frame molding.

Adding these simple rectangular boxes above and below a chair rail brings instant Parisian apartment vibes to a plain dining room. You can map out the boxes with painter's tape first to get the proportions exactly right before making a single cut. Painting the entire wall and molding the same color keeps it feeling fresh and modern.

5. Continuous Picture Ledge

Install a thick picture ledge trim about three-quarters of the way up your bedroom wall instead of a standard headboard. You can run it across the entire length of the room to create a continuous architectural feature. Paint the wall below it a deep, grounding shade and leave the top bright white to draw the eye up. It gives you a built-in spot to lean art, mirrors, and small trailing plants without putting dozens of holes in your drywall.

Why it works: The continuous horizontal line widens the room while doubling as functional display space.

6. Tall Board and Batten

My absolute favorite hallway trick is adding tall board and batten.

Taking the vertical battens up to five or six feet high makes standard eight-foot ceilings look massive. Capping it with a deep top rail gives you the perfect finishing touch. It adds so much texture to long, boring corridors that usually get ignored.

7. Stained Wood Baseboards

The contrast between natural wood tones and crisp painted walls is exactly what makes stained wood baseboards feel so warm and inviting. Instead of defaulting to white, leaving the wood grain exposed brings an earthy, grounded element to your living space. It pairs incredibly well with creamy white walls and vintage rugs.

Plus, stained wood hides scuff marks from shoes and vacuums way better than bright white paint ever will.

8. Accent Door Casings

I recently fell in love with wrapping door casings in a bold accent color.

Leaving the walls neutral but painting the door frame and the door itself a rich olive or navy creates a beautiful focal point. It highlights the architectural transition between rooms in a really unexpected way. You can easily pull this off in a weekend with just a quart of good trim paint.

9. Curved Cove Molding

Most modern homes completely lack transition details between the ceiling and the walls. Adding a simple cove molding softens that harsh 90-degree angle and brings a gentle, sweeping curve to the room. It feels much softer and more contemporary than traditional, heavily detailed crown molding. You get a clean, finished edge that subtly elevates the whole space.

10. Framed Wallpaper Murals

Using trim to frame out a specific zone is what makes an accent wall mural look like custom art instead of just wallpaper. You simply apply your wallpaper to the center of the wall and build a molding frame right over the edges. It completely elevates the application and makes the paper look like an expensive tapestry.

It is also a brilliant way to save money since you only need a single roll of expensive wallpaper.

• Miter box and hand saw
• Decorative trim molding
• Brad nailer

11. Beadboard Ceiling Trim

I am a huge advocate for installing beadboard ceiling trim in bathrooms and covered porches. The vertical lines draw the eye across the ceiling, adding incredible coastal charm and hiding any nasty drywall imperfections. You just run the panels perpendicular to your ceiling joists and finish the edges with a simple trim piece.

Painting it a soft haint blue adds that classic Southern porch feel.

• Beadboard panels
• Construction adhesive
• Finishing nails

12. Floor-to-Ceiling Grid Paneling

A highly architectural, library-inspired look happens when you install floor-to-ceiling grid paneling. It turns a basic blank wall into a deeply textured masterpiece.

You just map out large, equal squares using flat MDF strips across the entire wall surface. Painting it all one dark, saturated color makes the shadows pop.

It is the ultimate weekend upgrade for a boring home office.