Elevate Your Home’s Interior Design with Custom Window Trims

When it comes to crafting a beautiful, cohesive home, it’s the details that make all the difference. One of the most overlooked yet impactful design elements is window trim. At Sustainable Design Build (SDB), we believe your windows should do more than let in light—they should frame your space with style, intention, and craftsmanship.

That’s why we offer a curated selection of custom window trim options that allow you to personalize the look and feel of your home. Whether you’re building a custom home, adding a new wing, or enhancing your living space with a remodel, our expert team ensures that every detail—down to the trim—is aligned with your vision.

What Is Window Trim, and Why Does It Matter?

Window trim serves both aesthetic and functional purposes. Beyond hiding construction gaps between the wall and window frame, it helps define your home’s interior style. From minimalist to luxurious, trim can subtly enhance or boldly define the overall look of a room.

At SDB, we walk you through the available options early in your design journey so that your finished home feels polished, intentional, and completely your own.

Your Trim Options: A Guide to SDB’s Most Popular Styles

Here’s a quick breakdown of the custom trim packages you can choose from when working with our design and project management teams:

1. 3-Side Drywall Wrap with Sill and Apron

Best For: A clean, modern aesthetic with just a touch of warmth
This option wraps the top and sides of the window in drywall, paired with a wood sill and apron for subtle detail below the window. It’s a great hybrid style—minimal but still visually grounded.

Features:

• Drywall returns on top and sides

• Painted or stained wood sill

• Decorative apron below the sill

• Sleek and cost-effective with a soft traditional nod

2. Drywall Wrap with Full Casing

Best For: Classic and transitional homes
This trim includes full wood casing on all sides, providing a picture-frame-like finish. It’s a timeless option that adds definition and formality to any room.

Features:

• Full wood casing (top, sides, bottom)

• Coordinating sill and apron

• Can be painted or stained

• Ideal for homeowners seeking architectural balance

3. Professional Full Casement

Best For: High-end custom homes and statement spaces
Our most detailed trim package, the full casement option includes architecturally designed millwork with head casing, stool, apron, and side profiles. Crafted with precision, this option brings true luxury and craftsmanship to your interiors.

Features:

• Precision-milled casings with profile options

• Full perimeter trim with seamless detailing

• Ideal for high-visibility areas like living rooms or entryways

• Highest finish quality for a designer-grade result

Make It Your Own: Optional Enhancements

• Architraves: Add an elegant crown-like finish above the window with this decorative molding. Especially fitting for traditional or formal interiors.

• Rosettes: Decorative corner blocks that evoke a vintage or craftsman feel, perfect for Options 2 or 3.

• Clerestory Windows: By default, SDB finishes these high-mounted windows with simple drywall wraps for a clean, modern look—but we’re happy to coordinate custom trim with the rest of your design vision if desired.

What Sets Sustainable Design Build Apart

At SDB, we’re not just builders—we’re your design partners. We know how overwhelming the construction process can be, especially when it comes to the fine details. That’s why we’ve developed our Client Care Documents, like this one on window trims, to guide you through every decision with clarity and confidence.

Our in-house project managers and interior designers work hand-in-hand with you to ensure that even the smallest components—like window casings—contribute to the beautiful, cohesive home you envision.

Let’s Design Together

Choosing your window trim style might seem like a small task, but it plays a big role in defining your home’s personality. Whether you’re dreaming of modern minimalism or traditional charm, Sustainable Design Build offers the flexibility, expertise, and care to bring your ideas to life.

If you’re ready to start a home addition, build an ADU, or create your dream custom home, our team is here to help guide you through every finish, flourish, and fine-tuned choice.

Contact us today to learn more or schedule your design consultation—and let’s build something extraordinary together.