Custom Residential Design
Develop a complete residential vision for single-family homes and buildings through four units, coordinating architecture, interiors, sustainability, permitting, and construction guidance.
Custom architectural design creates a home shaped around your lifestyle, site, aesthetic, and long-term goals. Ortiz Mexia Projects, Inc. combines architecture, interiors, cabinetry, built-ins, sustainability, and advanced AI/VR tools into one coordinated vision. From early concepts through permitting and construction guidance, the studio helps clients make thoughtful decisions and pursue timeless, elegant residential environments rather than trend-driven solutions.

Integrated residential design services support thoughtful decisions from initial concepts through permitting, construction guidance, interiors, and completion.
Develop a complete residential vision for single-family homes and buildings through four units, coordinating architecture, interiors, sustainability, permitting, and construction guidance.
Create new-home designs with timeless aesthetics, environmental responsibility, detailed material sensibility, and coordination among clients, consultants, agencies, and contractors.
Reimagine existing residences through design, permit procurement, construction oversight, and completion support while respecting the property’s character and the client’s goals.
Plan residential additions and alterations with coordinated design, permitting assistance, sustainable systems, AI/VR tools, and guidance throughout construction and project completion.
Preserve architectural integrity in designated preservation contexts while integrating modern sustainable systems, thoughtful materials, and contemporary residential functionality.
Use immersive VR presentations and three-dimensional models to help clients experience proposed spaces, study design options, and participate more confidently in decisions.
Custom architectural design offers more than a distinctive appearance. It brings the home’s spaces, furnishings, cabinetry, built-ins, technologies, and environmental goals into a coherent whole. Ortiz Mexia Projects, Inc. provides hands-on guidance across design, permitting, contractor bidding, and construction, using AI and VR tools to clarify ideas while maintaining a timeless, elegant design sensibility.

A coordinated design practice for clients seeking thoughtful, enduring residential environments.
Architecture, interiors, furniture, cabinetry, and built-ins can be coordinated through one design practice.
Design decisions prioritize elegance, durability, and aesthetic longevity over fleeting trends.
AI and VR tools help clients understand proposed spaces and participate meaningfully in design decisions.
The studio supports clients, consultants, agencies, and contractors across design, permitting, and construction phases.
Learn about the architect guiding the studio’s residential design work.

Assoc. AIA, Principal
Santiago Ortiz is the founder and principal of Ortiz Mexia Projects, Inc., an architecture and design practice serving Los Angeles and Colorado's Roaring Fork Valley. Born and raised in Colombia, Santiago moved to Providence, Rhode Island, to pursue his passion for design, graduating from the Rhode Island School of Design in 1999 with degrees in Architecture and Fine Arts. After relocating to Los Angeles, he honed his craft at small architecture firms specializing in high-end custom residences and boutique commercial spaces before founding his own practice in 2006. Santiago is an Associate Member of The American Institute of Architects and brings a timeless, elegant sensibility to every project, from custom furniture and built-ins to full-scale residential construction. His work has been featured in Interior Design Magazine and the Los Angeles Times, reflecting his commitment to thoughtful, well-crafted design.
Custom architectural design allows a home to respond to the client’s lifestyle, site, aesthetic preferences, and long-term goals. It can coordinate architecture with interiors, cabinetry, built-ins, technology, and environmental priorities from the beginning. Rather than adapting a standard plan, clients participate in shaping a coherent residence with details and spaces developed specifically for how they intend to live.
Speak with the studio about your goals, property, and preferred level of guidance.
By appointment, the studio supports residential design projects across established California and Colorado service areas.
Los Angeles, CA
Primary Service Area
Roaring Fork Valley
Additional Service Area
By Appointment
Availability
Share your location and project goals to discuss potential design support.
Professional association membership reflecting architectural engagement.
Residential work featured in the Venice Vista Spring Home Tour.
Work featured in Interior Design Magazine and Los Angeles Times.
Share your property, goals, and desired services so the studio can discuss a thoughtful path forward.
For immediate assistance, feel free to give us a direct call at +1 (310) 600-0241.
For immediate assistance, feel free to give us a direct call at +1 (310) 600-0241.