Residential Design
Full-service custom residential design for single-family homes and buildings up to four units, including architecture, permitting, consultant coordination, and construction guidance.
Explore luxury renovation builders and design-led residential practices to consider for distinctive homes across the US. This guide highlights firms offering thoughtful architecture, interiors, custom cabinetry, permitting, and construction guidance. Ortiz Mexia Projects, Inc. brings a timeless, elegant approach to residences in Los Angeles and Colorado’s Roaring Fork Valley, with integrated design support from concept through completion.

Integrated residential design, renovation, interiors, cabinetry, permitting, and project guidance for distinctive custom homes.
Full-service custom residential design for single-family homes and buildings up to four units, including architecture, permitting, consultant coordination, and construction guidance.
Design-led residential remodeling for homes requiring coordinated design, permit procurement, construction oversight, and support through project completion.
Custom interiors for remodels, new construction, additions, and alterations, shaped by timeless elegance, environmental responsibility, and occupant wellness.
Integrated cabinetry and built-ins designed for practical use, lasting visual appeal, sustainable systems, and cohesive residential interiors.
Thoughtful remodeling for residences in Historical Preservation Overlay Zones, balancing architectural integrity with modern sustainable systems and technologies.
Guidance through municipal permitting for residential projects, with coordination among clients, consultants, contractors, and agencies through Certificate of Occupancy.
Luxury renovation requires more than attractive finishes. Ortiz Mexia Projects, Inc. coordinates architecture, interiors, cabinetry, permitting, consultants, and contractors into one considered process. The studio’s Los Angeles perspective and Roaring Fork Valley experience support elegant, environmentally responsible homes that respond thoughtfully to their setting, whether a modern remodel, historical preservation project, addition, or complete residential transformation.

A design-led practice bringing architecture, interiors, and implementation guidance together.
Architecture, interiors, furniture, cabinetry, and built-ins coordinated through one design practice.
Elegant solutions prioritize aesthetic longevity over fleeting trends in Los Angeles and Colorado homes.
Clients receive coordinated support across design, permitting, bidding, construction, and project completion.
AI and VR tools help clients study spaces and engage with design decisions more clearly.
A thoughtful principal-led practice for distinctive residential environments.

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.
Look for a practice that can coordinate design, permitting, consultants, contractors, interiors, and construction guidance rather than treating each element separately. Review the firm’s residential portfolio, communication approach, design philosophy, and experience with the project type and jurisdiction. A strong fit should also demonstrate thoughtful material decisions, clear collaboration, and a process aligned with your goals.
Speak with the studio about your home, design goals, and project location.
By-appointment residential design and renovation services across Los Angeles and Colorado’s Roaring Fork Valley.
Los Angeles, CA
Primary Service Area
Roaring Fork Valley
Colorado Region
By Appointment
Availability
Contact the studio to discuss location, scope, and design requirements.
Professional affiliation with the American Institute of Architects.
Residential work featured in Interior Design Magazine and the Los Angeles Times.
Residence featured in the Venice Vista Spring Home Tour.
Share your renovation goals and project location to explore the right design path.
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.