Custom Interior Design
Create thoughtful residential interiors for remodels, additions, alterations, and new construction, balancing timeless elegance, environmental responsibility, occupant health, and long-term use.
Understand the factors that shape an architect-led interior design budget, from project scope and permitting to custom cabinetry, furniture, technology, and construction guidance. Ortiz Mexia Projects, Inc. creates timeless, sustainable interiors for residences across Los Angeles and Colorado’s Roaring Fork Valley, with transparent discussions tailored to each project’s complexity, location, and desired level of involvement.

Explore integrated architectural and interior design support for custom homes, remodels, furnishings, cabinetry, and project completion.
Create thoughtful residential interiors for remodels, additions, alterations, and new construction, balancing timeless elegance, environmental responsibility, occupant health, and long-term use.
Develop individual furniture pieces and integrated furnishings that connect naturally with the surrounding architecture, using a design-led approach focused on durability, sustainability, and aesthetic longevity.
Design practical, refined cabinetry and built-ins for residential renovations and new construction, coordinating storage, spatial flow, materials, and the broader interior concept.
Preserve the architectural integrity of historically significant residences while introducing modern sustainable systems, updated functionality, and carefully considered interior improvements.
Use immersive virtual presentations and three-dimensional models to help clients experience proposed spaces at full scale or examine design ideas from different perspectives.
Coordinate design, permitting, consultants, contractors, bidding, construction, and project completion so the interior vision remains aligned across every phase.
The cost of architect-led interior design depends on the project’s scope, level of customization, permitting needs, construction guidance, and selected furniture or built-ins. Ortiz Mexia Projects, Inc. brings these elements together for residences in Los Angeles and Colorado’s Roaring Fork Valley, helping clients understand how design decisions influence the overall investment while pursuing timeless, sustainable results.

An integrated design practice helps connect the details that shape a successful interior.
Coordinate architecture, interiors, furniture, cabinetry, and built-ins through one cohesive design perspective.
Develop elegant spaces designed for aesthetic longevity rather than short-lived trends in Los Angeles and Colorado.
Receive support across design, permitting, bidding, construction coordination, and project completion.
Use AI, BIM, and VR tools to study design ideas and understand proposed spaces more clearly.
Led by Santiago Ortiz, an architect and fine arts graduate.

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.
The cost varies according to the project scope, level of design involvement, permitting requirements, construction guidance, and whether custom furniture, cabinetry, or built-ins are included. A new home, historical remodel, and focused interior project each require different services. Ortiz Mexia Projects, Inc. discusses the project goals and anticipated scope by appointment before defining the appropriate design engagement.
Talk with the studio about your property, goals, and design scope.
By-appointment design services are available across Los Angeles and Colorado’s Roaring Fork Valley.
Los Angeles, CA
Primary Service Area
Roaring Fork Valley
Colorado Region
By Appointment
Availability
Connect with the studio to discuss your location and project.
Professional affiliation with The American Institute of Architects
Work featured in a respected design publication
Residence featured in the Venice Vista Spring Home Tour
Share your property, goals, and desired scope to begin a thoughtful conversation with the studio.
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.