Mosarch Studio is a San Diego–based design studio with over 25 years of experience dedicated to creating custom homes and residential developments that respond to both their environment and the people who live in them.
Each home is thoughtfully and uniquely designed to reflect individual needs, lifestyle, and personality—resulting in spaces that feel authentic and tailored. We believe every project should be as distinctive as those who inhabit it, which is why we take the time to listen, understand each vision, and translate it into refined, sophisticated design solutions.
With a strong understanding of local zoning and permitting processes, we guide projects from early concept through approval, helping unlock the full potential of each property. Our work blends modern design with practical solutions, delivering spaces that are intentional, functional, and enduring. In addition to new homes, our studio also undertakes select remodels and accessory dwelling units (ADUs) as part of a comprehensive residential design approach.
Ramon Moscoso: Principal/ Designer: founded Mosarch Studio in 2001 after several years of experience working with respected architectural firms in the San Diego area. Having grown up between Mexico and San Diego, he brings a diverse cultural perspective to his work. Ramon earned a Bachelor of Architecture from Woodbury University in Burbank, California.
Over the years, he has been recognized for his passion for residential design, combining creative vision with a strong focus on aesthetics, functionality, and the thoughtful use of space. His work emphasizes maximizing each project’s potential while delivering refined and well-balanced design solutions. Ramon also served as a Project Manager at Design Line Interiors, where he developed strong expertise in space planning and interior coordination. This experience allows him to work seamlessly across both small and large-scale projects, creating homes that are both beautiful and highly functional.
Zareth Velazquez: Project Manager and Designer at Mosarch Studio, known for her strong design mindset and ability to translate ideas into cohesive, well-executed projects. Zareth is an Architect from Mexico with professional experience in both Mexico and the United States, bringing a diverse design perspective informed by different cultural and design contexts. Her work is driven by a deep understanding of space, proportion, and detail, allowing her to maintain design integrity throughout all phases of a project. She is instrumental in bridging concept and execution, ensuring each project is both refined and buildable.
Dahlia Torres: Interior Designer at Mosarch Studio with over two decades of experience, and co-founder of the interior design firm DT. She is known for her ability to work across diverse architectural styles with clarity and sophistication.As part of the Mosarch Studio team, she enhances and reinforces a cohesive design direction, elevating each project to a higher level of refinement. Her work is defined by a strong sense of composition, materiality, and detail, allowing interiors to seamlessly integrate with the overall design vision. Her role within the studio enhances and reinforces a cohesive design approach, elevating each project to a higher level of refinement.
Alan: Consultant Project Designer with a strong design-oriented approach and a solid technical foundation. Trained as an Architect in Mexico, he has worked in both Mexico and the United States, bringing a cross-cultural perspective that enriches the studio’s design process. His role bridges design and execution, supporting the development of cohesive architectural solutions while maintaining precision in documentation and coordination. He is instrumental in ensuring that each project is both refined in design and thoroughly resolved in its execution.