Custom Residential Design
Full-service design for single-family homes and residential buildings up to four units, including architectural coordination, permitting guidance, and construction-phase support.
Choosing a local modern residential architect means gaining a design partner who understands the character, permitting expectations, and practical demands of your area. Ortiz Mexia Projects, Inc. creates timeless, elegant homes through coordinated architecture, interiors, cabinetry, and construction guidance. From new residences to remodels and additions, the studio brings thoughtful collaboration, sustainable thinking, and advanced visualization to each project.

Integrated architectural and design services for custom homes, renovations, interiors, cabinetry, permitting, and project guidance.
Full-service design for single-family homes and residential buildings up to four units, including architectural coordination, permitting guidance, and construction-phase support.
Design-led remodeling for homes seeking improved function, timeless character, sustainable systems, and coordinated support from initial concepts through project completion.
Thoughtful additions and alterations that respond to an existing home while coordinating design, permitting, consultants, contractors, and the completed residential environment.
Custom interior design for remodels, new construction, additions, and alterations, integrating spatial planning, health-conscious practices, furniture, and lasting visual coherence.
Integrated cabinetry and built-in elements designed for practical use, environmental responsibility, occupant wellness, and an enduring relationship with the surrounding architecture.
Immersive VR presentations help clients experience proposed spaces at full scale or study three-dimensional models, making design decisions more informed and tangible.
A local architect can connect design decisions with the realities of permitting, construction, consultants, and everyday living. Ortiz Mexia Projects, Inc. coordinates architecture, interiors, furniture, cabinetry, and built-ins within one thoughtful vision. The practice serves Los Angeles and Colorado’s Roaring Fork Valley, bringing a hands-on approach to custom homes, renovations, additions, and carefully considered modern residential environments.

A principal-led practice brings architectural vision and detailed coordination together for residential projects.
Santiago Ortiz remains closely involved, bringing architectural and fine arts training to each residential design.
Architecture, interiors, furniture, cabinetry, and built-ins can be coordinated through one design practice.
Experience across Los Angeles and the Roaring Fork Valley supports responsive design and project coordination in each region.
AI and VR tools help communicate design intent, study options, and support more informed collaboration.
A focused architectural practice led by founder and principal Santiago Ortiz.

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.
A local residential architect can bring familiarity with the character of the area, municipal coordination, project consultants, and regional construction realities. Ortiz Mexia Projects, Inc. combines that local perspective with an integrated design practice covering architecture, interiors, cabinetry, built-ins, permitting support, and construction guidance. The result is a more coordinated design experience from early ideas through project completion.
Speak with the studio about your property, goals, and design priorities.
The studio serves selected residential clients across Southern California and Colorado’s Roaring Fork Valley.
Los Angeles, CA
Primary Region
Roaring Fork Valley
Mountain Region
By Appointment
Availability
Contact the studio to discuss your location and residential design needs.
Professional affiliation held by principal Santiago Ortiz.
Ortiz-Wheeler Residence featured in the Venice Vista Spring Home Tour.
Work featured in Interior Design Magazine and the Los Angeles Times.
Share your residential goals and connect with the studio about design, permitting, and project guidance.
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.