At Tower Design Interiors, we understand that a well-designed space does more than just look good—it enhances your everyday life. Whether you’re renovating an estate, refreshing a single room, or starting from the ground up, our team of experienced interior designers brings clarity, creativity, and cohesion to every project.
Nestled in the elegance of San Mateo County, Hillsborough is known for its architectural distinction, scenic charm, and refined living. That’s why we take a bespoke approach to interior design—no templates, no shortcuts, just thoughtful solutions that align with your lifestyle, vision, and architectural context. At Tower Design Interiors, we believe your home should be a reflection of the life you live—and aspire to live.
As a residential interior designer in Hillsborough, our goal isn’t just to decorate, but to design living spaces that are deeply personal, beautifully styled, and built to last. From new builds and remodels to furniture sourcing and styling, we bring your ideas into focus—making the process intuitive and inspired.
Our approach is simple yet transformative: we listen first, design second, and always center your lifestyle, needs, and preferences throughout the process. Whether you’re redesigning a single room or embarking on a whole-home renovation, we help bring clarity, vision, and cohesion to every square foot.
Hillsborough homes are celebrated for their architecture—whether it’s a classic Tudor estate, Mediterranean villa, or modern new build. Our deep understanding of local styles, property values, and lifestyle preferences makes us the ideal partner for residential interior design.
We work with homeowners who are:
No matter the scale or style, we design spaces that feel timeless, inviting, and uniquely yours.
Your home is more than a backdrop—it’s a central part of your life story. At Tower Design Interiors, we provide interior design services in Hillsborough that go far beyond surface-level aesthetics. Our designs are thoughtful, intentional, and always deeply personalized.
Whether you’re drawn to modern minimalism, transitional warmth, or California casual elegance, we tailor every project to suit your individual taste. Tower Design is a full-service interior design firm offering:
From concept to completion, we manage every detail—color palettes, materials, space planning, lighting, furnishings, and styling.
Whether you’re updating a historic home or modernizing a traditional layout, we integrate new design seamlessly into your home’s character.
We curate textures, finishes, and pieces that elevate the space while aligning with your taste, lifestyle, and budget.
We bring spaces to life with curated art, accessories, and finishes. From selecting meaningful pieces to perfect placement, every detail reflects your style.
Tower Design Interiors is a client-focused, full-service interior design firm with expertise in luxury residential and commercial interior renovation and decoration.
Design is not just about creating something beautiful. It’s about designing a feeling. A space that welcomes, calms, inspires, and supports you every day. That’s the difference we bring as your residential interior designers in Hillsborough:
We don’t start with trends—we start with you. Every design choice is shaped around your routine, preferences, and how you want to experience your home.
We combine timeless principles with contemporary elegance. Clean lines, layered textures, intentional lighting, and curated materials come together to create a space that feels cohesive, elevated, and lasting.
From millwork to material finishes, we obsess over every detail. Our meticulous design process ensures quality and clarity from beginning to end.
We work alongside contractors, builders, and artisans to bring the vision to life—managing timelines, communicating updates, and solving problems so you don’t have to.
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!
Yes. Whether you’re building your dream home from the ground up or updating an existing space, we offer complete residential interior design services that cover everything from layout planning to furniture and finish selection.
Every project starts with a detailed consultation where we understand your goals, preferences, and lifestyle. From there, we develop a tailored design plan that aligns with your vision and your home’s architectural character.
Timelines vary depending on the scope of work, but most full-home projects range from a few months to over a year. We provide a clear project timeline from the start, with regular updates throughout the process.
Yes. We’re committed to thoughtful design, and that includes sourcing sustainable materials, recommending energy-efficient solutions, and helping you make eco-conscious choices that align with your values.
We don’t limit ourselves to one aesthetic. From modern minimalism to transitional elegance, our goal is to reflect your style. Every design is tailored to the client’s personality, home architecture, and lifestyle needs.
If you’re dreaming up a minimalist haven or a heritage-inspired home, Tower Design is here to help. Our luxury interior design services are rooted in creativity, craftsmanship, and connection. From initial inspiration to final install, we’ll guide you every step of the way.
