Custom Residential Design
Develop a complete design for single-family homes and residential buildings through four units, with architectural planning, permitting support, and construction guidance.
Create a home with timeless character, thoughtful interiors, and coordinated architectural details through Ortiz Mexia Projects, Inc. From initial concepts and permitting to contractor coordination and construction completion, the studio guides custom residential projects with hands-on expertise. Serving homeowners in Los Angeles and Colorado’s Roaring Fork Valley, each design balances personal needs, environmental responsibility, and enduring craftsmanship.

Integrated residential design, permitting, interiors, and construction guidance for thoughtfully planned custom homes.
Develop a complete design for single-family homes and residential buildings through four units, with architectural planning, permitting support, and construction guidance.
Coordinate new-home design from early concepts through completion, integrating sustainable strategies, advanced visualization, consultants, and general contractor collaboration.
Reimagine existing residences through design, permit procurement, construction oversight, and project completion while preserving timeless character and improving daily function.
Plan thoughtful additions and alterations for homes and residential buildings, coordinating design, municipal approvals, consultants, contractors, and construction phases.
Create cohesive interiors with custom furniture, cabinetry, and built-ins that connect architecture, practical use, sustainable thinking, and long-term aesthetic value.
Assist homeowners, consultants, and contractors with building permit procurement and municipal coordination for residential projects in supported service areas.
Ortiz Mexia Projects, Inc. brings architecture, interiors, furniture, cabinetry, and built-ins together under one coordinated design practice. Clients receive guidance from early planning through permitting, contractor bidding, construction, and Certificate of Occupancy. With projects across Los Angeles and Colorado’s Roaring Fork Valley, the studio combines timeless elegance, environmental responsibility, advanced AI and VR tools, and careful attention to each home’s setting and occupants.

A design-led practice for homeowners seeking coordinated expertise and enduring residential character.
Architecture, interiors, furniture, cabinetry, and built-ins are developed through one coordinated design practice.
Design decisions prioritize elegant, durable environments rather than short-lived trends or disconnected finishes.
Clients receive support through design, permitting, contractor bidding, construction, and project completion.
The studio understands residential work across Los Angeles and Colorado’s Roaring Fork Valley communities.
A principal-led studio with deep architectural and fine arts foundations.

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 service can include architectural design, building permit procurement, interior design, contractor bidding guidance, construction administration, custom cabinetry, built-ins, and support through Certificate of Occupancy. Ortiz Mexia Projects, Inc. coordinates with clients, consultants, municipal agencies, and general contractors so the home’s architectural and interior elements are developed as one considered project.
Connect with the studio to explore your goals, property, and project scope.
Residential design services are available by appointment across Los Angeles and Colorado’s Roaring Fork Valley.
Los Angeles, CA
Primary Area
Roaring Fork Valley
Colorado Region
By Appointment
Availability
Contact the studio to discuss your location and residential design needs.
Professional membership reflecting affiliation with the American Institute of Architects.
Ortiz-Wheeler Residence featured in the Venice Vista Spring Home Tour.
Work featured in Interior Design Magazine and the Los Angeles Times.
Share your property, goals, and preferred service area so the studio can discuss a considered 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.