The primary objective of this project was to create a two-story rear addition with a hip roof that enhances the home's relationship with the backyard while maintaining compatibility with the existing architecture.

On the main floor, the rear-facing room and the new addition were combined to create a spacious primary suite. To minimize demolition and reduce construction costs, the existing bathroom was retained, and the new primary bathroom was located adjacent to it, allowing the existing plumbing infrastructure to be largely preserved. Within the limited footprint, an oriel window projecting toward the side yard was introduced to accommodate a freestanding bathtub while maximizing usable floor area.

The primary bedroom was positioned at the rear of the house to take advantage of backyard views and natural light. A second oriel extending toward the backyard increases the room volume while bringing additional daylight into the space. Between the bedroom and bathroom, separate his-and-hers walk-in closets were designed to provide ample storage. To enhance privacy, access to the primary suite is provided through a small vestibule connected to the existing hallway.

The main floor living spaces were also reconfigured to create a larger and more functional kitchen. The existing kitchen and dining areas were combined into a single open-plan layout featuring a galley kitchen. This arrangement improves circulation around the central staircase and strengthens the connection between the common living spaces. An existing window was preserved by incorporating a built-in bench beneath it, creating a small coffee nook overlooking the backyard.

On the second floor, the existing circulation suffered from limited head clearance due to the sloped roof. To improve accessibility, the existing linen closet was removed and replaced with a more comfortable circulation path. Around the central staircase, a spacious play area was created while carefully considering ceiling slopes and headroom requirements.

The existing bathroom occupied a disproportionately large portion of the upper floor. It was redesigned and slightly reconfigured to allow three bedrooms on the second floor while remaining close to its original location to minimize plumbing modifications. Since the bathroom serves all three bedrooms, it was designed as a highly functional shared family bathroom.

One new bedroom with an attached closet was accommodated within the existing footprint, overlooking the side yard, while the third bedroom was located within the new second-story addition. To achieve a comfortable ceiling height for the primary suite below, the finished floor elevation of the addition's second floor was raised by two steps.

On the exterior, the addition was designed to complement the existing house while remaining cost-effective. A brick wainscot visually connects the new construction with the original home, while horizontal siding matching the existing second-floor cladding creates a cohesive architectural expression.