The Extraordinary Round Hill Estate

Set behind a private gate and situated on nearly an acre of land in one of Tiburon’s most coveted enclaves, 233 Round Hill Road was conceived as a private resort, where unparalleled design, exceptional craftsmanship, and a refined sense of scale are intentionally composed—each line, finish, and proportion reflecting an unwavering commitment to quality and detail.

This architecturally significant estate unfolds with a commanding presence, showcasing sweeping views spanning from Sausalito to the Golden Gate Bridge. 

The park-like grounds offer a rare sense of scale and versatility, encompassing a striking main residence, a beautifully appointed guest house, a separate studio/office, and a 4-car garage. Designed for both everyday living and entertaining, the outdoor spaces include an expansive level lawn, a turf lawn, manicured landscaping, raised garden beds, a spa, a koi pond, and multiple terraces and patios. Meandering pathways connect each setting, creating a cohesive outdoor environment that feels both designed in concert with its surroundings and undeniably luxurious.

A comprehensive renovation completed in 2023 transformed the main residence, which was meticulously rebuilt with all-new plumbing, electrical, and lighting, along with new roofing across all structures. Solid wood doors and high-quality finishes throughout, reflecting a clear commitment to craftsmanship and enduring design.

The reimagined interiors feature vaulted ceilings on the main living level and expansive views from nearly every room. Wide-plank European oak floors by Trunk Floors, imported from Ireland, run throughout, complemented by all-new bathrooms, refined millwork, custom staircase railings, and thoughtfully updated floor plans. The grounds were also extensively redesigned, introducing a built-in spa, multiple patios for entertaining, raised garden beds, and a rear turf lawn—enhancing the property’s indoor-outdoor living experience.

Collaboratively envisioned by PLR Builders and Chambers + Chambers Architects, the renovation reflects a disciplined and refined approach—defined by understated elegance, layered materials, and a strong sense of proportion. The result is a residence that feels both current and timeless, where architecture, landscape, and natural light are considered at every turn.

Inside, nearly 6000 square feet of living space unfold with meticulous intention.

The family room is defined by soaring vaulted ceilings and an oversized picture window that fills the space with natural light. A fireplace adorned with a custom Pietra Fina marble mantel serves as a striking focal point, while French doors on both sides of the room open to the main-level terrace, with one overlooking the water and the other adjoining an outdoor entertaining area with a built-in BBQ, creating a natural extension of the living space.

Open and beautifully updated, the state-of-the-art chef’s kitchen features marble countertops, statement lighting by Apparatus, crisp white cabinetry, and a peninsula with counter seating. High-end stainless steel appliances include a Wolf gas range and oven, Sub-Zero refrigerator, and Bosch dishwasher. 

Framed by expansive grid-pane windows, the casual dining area is immersed in natural light and captivating views of the bay and the surrounding hills. A sculptural Apparatus chandelier defines the space, creating an inviting setting for everyday dining.

Positioned to take in sweeping water views, the dining room is complemented by a striking Apparatus lighting fixture and detailed ceiling millwork. A built-in bar with a marble countertop and custom walnut cabinetry introduces a rich material contrast, thoughtfully integrated into the space.

A dramatic interplay of vaulted ceilings and angular rooflines gives the living room its distinctive presence. Dormer windows overlook the grounds, while oversized windows draw in the surrounding views. A fireplace finished in custom Pietra Fina marble adds warmth and quiet sophistication.

Just off the living room, a distinctive atrium unfolds as an architectural centerpiece, where retractable doors open to create a seamless connection to the outdoors. A soaring pitched ceiling with skylit detailing and a dramatic arched window fills the space with natural light and garden views. Limestone flooring grounds the room, while designer lighting and a built-in bar with marble countertops and a wine refrigerator enhance its function, creating an inviting setting for both everyday living and entertaining.

The serene upper-level primary suite captures sweeping Bay views and features oversized windows that fill the space with natural light and frame the surrounding landscape, a fireplace clad in Calacatta Viola marble, and a walk-in closet with a custom wardrobe system.

The spa-inspired primary bathroom features bespoke custom cabinetry with integrated medicine cabinets, Waterworks fixtures, and statement lighting by Urban Electric. Calacatta Borghini marble from Pietra Fina is used throughout, complemented by radiant heated floors, dual sinks, and a heated towel warmer.

Wrapped in custom walnut millwork and lined with built-in bookcases, the office opens to a private view deck with picturesque outlooks—including a partial view of the Golden Gate Bridge towers—creating an inspiring and serene workspace.

A staircase descends to the lower level of the residence, featuring three en suite bedrooms with all-new windows, a laundry room, and a fitness room.

The beautifully appointed guest house offers a private retreat, thoughtfully designed with expansive glass doors and windows that create a seamless indoor-outdoor connection. The light-filled lounge features hardwood floors and a fireplace, while the full kitchen is equipped with a dishwasher and refrigerator. A walk-in closet/dressing area, a spa-like bathroom with a floor-to-ceiling glass-enclosed shower, and a dedicated sauna complete the space.

Privately set above the detached garage, the studio offers a bright and versatile environment, ideal for a home office, creative space, or additional lounge. Hardwood floors and a pitched ceiling enhance the sense of scale, while expansive windows and glass doors open to two brick terraces, creating an effortless indoor-outdoor flow. A wet bar with a sink, a walk-in closet, and a powder room add convenience and functionality.

233 Round Hill Road is truly one of a kind, delivering a rare sense of seclusion and retreat-like privacy while remaining just minutes from the charm of downtown Tiburon’s incredible dining and boutique shops, ferry access to San Francisco,  waterfront pathways, and miles of open space trails.

*Co-Listed with Beth Ellis, DRE#01933464, Compass