Custom Residential Design
Develop a tailored design for single-family homes through four-unit residential buildings, with support spanning architecture, interiors, sustainability, permitting, and construction.
Designing a home is a significant journey, and the right architect can turn your ideas into a thoughtful, enduring residence. Ortiz Mexia Projects, Inc. guides clients through custom residential design, permitting, interiors, and construction coordination across Los Angeles and Colorado’s Roaring Fork Valley, creating elegant environments shaped around lifestyle, site, sustainability, and long-term livability.

Integrated architectural and design services support custom homes, renovations, interiors, permitting, and construction from concept through completion.
Develop a tailored design for single-family homes through four-unit residential buildings, with support spanning architecture, interiors, sustainability, permitting, and construction.
Create a complete design vision for a new residence, combining timeless aesthetics, advanced visualization, sustainable systems, consultant coordination, and guidance through project completion.
Reimagine an existing home through coordinated design, permit procurement, construction oversight, and project guidance focused on elegant, durable, and environmentally responsible results.
Expand or reconfigure a residence with carefully coordinated architectural services for design, permitting, consultant collaboration, construction, and completion.
Respect a home’s architectural character while incorporating modern sustainable systems and technologies, particularly for residences within Historical Preservation Overlay Zones.
Coordinate interiors, furniture, cabinetry, and built-ins into a unified residential environment guided by health-conscious, sustainable, and timeless design principles.
Ortiz Mexia Projects, Inc. brings architecture, interiors, furniture, cabinetry, and built-ins together under one design-led practice. Clients receive hands-on guidance from early concepts through permitting, contractor bidding, construction, and Certificate of Occupancy. For projects in Los Angeles or Colorado’s Roaring Fork Valley, the studio balances site-responsive planning, environmental responsibility, advanced AI and VR tools, and detailed craftsmanship to create homes with enduring character.

A coordinated design practice helps homeowners move from an initial idea toward a resolved, enduring home.
Architecture, interiors, furniture, cabinetry, and built-ins are coordinated through one thoughtful design practice.
Design decisions prioritize elegant proportions, material sensibility, durability, and longevity over fleeting trends.
Clients receive support across design, permitting, bidding, construction coordination, and Certificate of Occupancy.
The studio works across Los Angeles and the Roaring Fork Valley, responding to distinct sites and municipal processes.
Led by founder and principal Santiago Ortiz, the studio brings architecture and fine arts together.

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.
Architectural fees vary according to the project’s scope, complexity, size, location, and the level of services required. A project may involve design, interiors, permitting, contractor bidding, construction guidance, and coordination through Certificate of Occupancy. Ortiz Mexia Projects, Inc. discusses the intended program and services with each homeowner before outlining the appropriate engagement and fee structure.
Share your goals with the studio and explore the right path for your project.
Ortiz Mexia Projects, Inc. works with residential clients across Los Angeles and Colorado’s Roaring Fork Valley.
Los Angeles, CA
Primary Region
Roaring Fork Valley
Colorado Region
By Appointment
Availability
Contact the studio to discuss your property, location, and residential design goals.
Professional association membership held by principal Santiago Ortiz
Residential work featured in the Venice Vista Spring Home Tour
Projects featured in respected architecture and design publications
Tell us about your property, ideas, and goals so we 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.