In Los Altos, luxury is often defined not by excess, but by restraint, architectural clarity, and an uncompromising attention to detail. The most exceptional homes feel curated rather than decorated — refined environments where art, architecture, craftsmanship, and lifestyle exist in complete harmony. At Tower Design, we create sophisticated modern residences for clients seeking interiors that feel deeply personal, visually compelling, and architecturally significant. Our work is rooted in contemporary design, collectible materials, and the belief that a home should feel both emotionally resonant and effortlessly livable. We specialize in exclusive, art-driven interiors that balance sculptural minimalism with warmth, texture, and depth — residences designed with intention and layered with custom details, bespoke furnishings, and carefully integrated art collections.
The most compelling modern homes are not trend-driven. They are layered, intentional, and impossible to replicate.
Our interiors are defined by architectural balance, sculptural forms, rich natural materials, custom detailing, and thoughtfully curated furnishings that create atmosphere without excess. Every space is designed to feel calm yet visually unforgettable — sophisticated while remaining deeply livable.
Tower Design works with clients seeking:
Rather than relying on trends, we create homes that feel timeless, culturally informed, and deeply connected to the people who live within them.
Luxury residential design at this level requires far more than aesthetic direction alone. It requires vision, organization, discretion, and meticulous execution across every phase of the project.
Tower Design offers a comprehensive full-service interior design experience that oversees every layer of the residence from concept development through final installation and styling. Our role is to simplify complex projects while ensuring every detail remains aligned with the larger architectural vision.
Our services include:
We collaborate closely with architects, builders, artisans, galleries, and fabricators to create homes that feel seamlessly integrated and exceptionally resolved.
The result is an environment that feels elevated, effortless, and entirely bespoke in every detail.
No two clients — and no two residences — should ever feel the same.
Our process begins by understanding how our clients want to experience the home emotionally, visually, and functionally: How they entertain. How they collect art. How they spend time privately. How they want the space to feel on a daily basis. Some clients are creating legacy family homes designed to evolve beautifully over decades. Others are relocating from urban environments in search of greater privacy, architectural space, and a more intentional way of living. Many seek residences that support wellness, creativity, entertaining, and quiet retreat all within a single cohesive environment. Every detail is approached with care, from large-scale spatial planning and architectural flow to the subtle textures, finishes, lighting, and furnishings that shape how a home is experienced over time. Rather than creating interiors that feel overdesigned or performative, we focus on homes that feel collected, deeply personal, and quietly extraordinary.
I highly recommend Tower Design Interiors. Their ability to source just the right furniture, art, decor, architectural element, etc. is always with a sophisticated understanding of color, architecture, design and art that surpasses anyone else we have worked with. We are thrilled with our current project. Excellent skillful service. Great communication, highly professional, organized. We recommend Tower Design Interiors.
awesome ness would killKathleen is a skillful master at what she does with supreme knowledge of the industry. She possesses many sources and connections for artisans, furniture, decor and subs. Her remodeling skills and taste are impeccable! She and her team are well organized, communicative and it is always a pleasure to work with. Her amazing design sense is truly invaluable. Highly recommend Tower Design to anyone renovating, decorating or building.
Jacqueline BurbankKathleen McMullen has been my designer for three of my homes and is the only interior designer I will ever consult again. She’s the best!!!! Her level of knowledge, resources, skill and overall abilities were beyond what I expected. Couples with her ability to work within a specific budget she is what you want. A savant with art and decor. If you are looking for a luxury Interior Designer in Scottsdale, Kathleen is that and so much more.
John SpaldingWhat a pleasure it has been working with Kathleen and her Tower Design team! Kathleen has helped us to both design and furnish our newly remodeled Scottsdale home. The journey lasted a year and a half, and we are so grateful for her grace and wealth of information and counsel. From the very start, Kathleen helped us to envision and make the home that we wanted a reality. Tower Design Interiors is a breeze to work with because they are extremely organized, patient, and flexible. Kathleen’s sense of color, space and design is unmatched. Her grasp of art and design is absolutely superior to anyone I have ever worked with. Our beautiful home is so comfortable, and stunning all at once. We would highly recommend Kathleen and her team for their expertise in all phases of design, construction and interior design.
Elyshia HollidayTower Design Interiors have been nothing short of amazing. Kathleen designed our second home and it was such a blessing to have her as both our designer and our spokesperson. She has been a valued asset: professional, attentive, a great communicator and innovative in her approach and style. We are more than ecstatic as the outcome is stunningly beautiful. She made a complex project seem easy, and we loved working with her. I highly recommend Tower Design Interiors and look forward to future projects with them.
Sharon Moreno
Let’s connect with our interior designer team!
Let’s connect with our interior designer team!
Let’s connect with our interior designer team!
We specialize in luxury residential interiors including custom homes, large-scale renovations, full-home furnishing projects, and thoughtfully curated interior transformations.
Yes. We manage every stage of the design process including concept development, design documentation, procurement, installation, and final styling.
Absolutely. We work closely with architects, builders, and consultants throughout the construction process to ensure the design vision is executed cohesively and at the highest level.
Yes. We design and source bespoke furnishings, cabinetry, millwork, and architectural details tailored specifically to each residence and client lifestyle.
Project timelines vary depending on the scope of construction, level of customization, and scale of the residence. Most projects range from several months to well over a year.
Our process begins with an in-depth discovery phase focused on understanding your routines, preferences, lifestyle, and long-term goals for the home. We use those insights to create interiors that feel authentic, highly tailored, and enduring over time.
A remarkable home should feel effortless, artistic, and entirely authentic to the people who live within it. Tower Design combines architectural understanding, refined creative direction, and meticulous project execution to create modern luxury residences with depth, sophistication, and lasting impact. Our work is rooted in timeless design principles, exceptional craftsmanship, collectible materials, and a highly personalized client experience from concept through completion. For clients seeking an elevated, art-driven modern home in Los Altos and throughout the San Francisco Bay Area, we invite you to begin the conversation.
