let's assemble something great together!
Assemble + Co started with a simple idea—architecture should do more than just fill space. It should create places that feel good to be in, places that bring people together, and places where life happens.
For Brett and Whitney Davidson, design has always been about more than just buildings. It’s about the way a space makes you feel, the memories made there, and the connection between past, present, and future. Whether it’s restoring a historic structure or designing something brand new, they approach every project with thoughtfulness, creativity, and a respect for what came before.
New Braunfels isn’t just where they work—it’s home. It’s where their family has grown, where they’ve spent years exploring the balance between tradition and fresh ideas, and where they’re invested in shaping what’s next.
This is Assemble + Co—where great design isn’t just about what you build. It’s about what you create, and what you leave behind.
Some projects prior to 2024 in Collaboration with Total Art Design & Architecture (TADA)
Brett Davidson, RA, LEEP AP
Architect, Builder, Founder
How does a native Texan of the Rio Grande Valley and honorary Missourian, with a passion for diverse architectural expressions, find himself shaping award-winning spaces in New Braunfels, Texas? The same individual who, as a child, was captivated by his grandpa’s masonry work in rural Missouri, unaware that this fascination would evolve into a celebrated career. A career that, rather than following a predetermined path, unfolded through a commitment to comprehensive design and construction, guided by a belief that: Architecture is the thoughtful making of space and place.
This philosophy has led him to explore a multitude of project typologies, from custom residences to dynamic mixed-use developments. His journey through full-concept design/build projects has honed his ability to see a project from conception through construction, ensuring that each space is both functional and inspiring. His work has not only garnered national and regional awards but has also been featured in international architectural publications, reflecting a dedication to excellence and innovation.
For the past 15 years, he and his family have called New Braunfels home, relishing the simple joys of swimming in the local rivers during the warm Texas summers.
Lucas Mackey, AIA
Architect, Builder, Explorer
Growing up in the Chicago suburbs to designing landmark spaces in Texas, Lucas Mackey’s journey has always been hands-on. His passion for blending design with execution was shaped early—building from the ground up, both literally and creatively.
With a background in architecture and managing job sites at a design/build firm, Lucas brings a maker’s mindset to every project. He believes that exceptional architecture happens where vision meets precision—from foundation to final detail.
Lucas’s portfolio spans from custom furniture and lighting to multi-acre master plans, showcasing his ability to transform complex challenges into thoughtful solutions. His approach is grounded in creativity, constructability, and care.
A graduate of Judson University and a masters degree at UTSA, Lucas has called San Antonio home since 2015. Here, he continues to craft spaces that inspire—rooted in experience, shaped by passion, and connected to the community.
Diego Mujica
Architectural Designer, Creator, Visionary
From his roots in La Paz, Mexico, to designing impactful spaces in Texas, Diego Mujica’s journey is defined by creativity and precision. Growing up in the Rio Grande Valley and earning his Master’s degree in Architecture from UTSA—along with a certificate in High Performance and Sustainability—he brings a thoughtful, forward-looking approach to every project.
Diego’s experience spans from unique architectural designs to historic renovations and large-scale master plans, reflecting his ability to blend vision with execution. Now, he’s excited to expand his focus into project management, where he can drive complex projects from concept to completion with care and clarity.
Beyond architecture, Diego’s creativity extends to urban and architectural photography, woodworking, and graphic design—passions that inspire his design perspective and fuel his artistic expression.
With a foundation built on experience and a future driven by curiosity, Diego is ready to shape spaces that leave a lasting impact.
Sam Montoya
Project Designer, Explorer, Storyteller
Sam Montoya brings a global perspective to every design, shaped by her passion for exploring cultures and their architectural expressions. A 2020 graduate of the University of Texas at San Antonio with a Bachelor’s degree in Architecture, she infuses her projects with creativity, care, and cultural insight.
Her work blends aesthetics with functionality, producing spaces that are both beautiful and purposeful. With a sharp eye for detail and a deep appreciation for design’s impact, she delivers thoughtful solutions across a wide range of projects.
Sam’s curiosity and creativity extend beyond architecture—she sees every experience as an opportunity to inspire, shape, and innovate. Her designs aren’t just spaces—they’re stories.
Whitney Davidson
Co-Founder, Leader, Mom
Whitney Davidson wears many hats—co-founder of Assemble + Co, mother, teacher, occasional coach to her seven daughters, and, jokingly, the ‘Board of Directors.’ She leads her family and ventures with heart, humor, and vision.
A graduate of the University of Texas at San Antonio with a Bachelor’s degree in Architecture, Whitney blends her creative background with her passion for people and community. Originally from Phoenix, Arizona, she found more than a new home when she moved to Texas in 2004—she discovered her love for the Hill Country and Brett.
In addition to her work with Assemble + Co, Whitney raises goats on their property, embracing the joys and rhythms of country life. Her story is one of creativity, family, and a deep connection to the place she proudly calls home.
