Custom Home Design
Design services for single-family homes and residential buildings up to four units, with support from concept and permitting through construction completion.
Compare residential architecture services in Los Angeles with a clearer view of fees, project scope, and professional support. Ortiz Mexia Projects, Inc. guides homeowners through custom design, permitting, interiors, renovations, additions, and construction administration. With experience in Los Angeles homes and local preservation considerations, the studio brings timeless design, thoughtful coordination, and sustainable strategies to projects from concept through completion.

Explore integrated Los Angeles residential design services spanning architecture, interiors, permitting, renovation, and construction guidance.
Design services for single-family homes and residential buildings up to four units, with support from concept and permitting through construction completion.
Full-service residential remodeling for single-family homes, including design, permit procurement, construction oversight, and guidance through project completion.
Thoughtful additions and alterations that coordinate architectural design, permitting, consultants, contractors, sustainable systems, and the existing home.
Preservation-focused remodeling for residences in Historical Preservation Overlay Zones, balancing architectural integrity with modern sustainable systems and technologies.
Custom residential interiors for remodels, new construction, additions, and alterations, integrating timeless spaces with furniture, cabinetry, and built-ins.
Guidance through building permit procurement for residential projects, with coordination among homeowners, consultants, contractors, and municipal agencies.
Residential architect fees in Los Angeles vary according to project scope, complexity, services selected, and the level of coordination required. Ortiz Mexia Projects, Inc. can connect design, interiors, cabinetry, permitting, and construction guidance into one considered practice. That integrated approach helps homeowners evaluate services clearly while addressing the design character, sustainability goals, and municipal requirements of their property.

A design-led practice for homeowners seeking coordinated residential architecture and interiors in Los Angeles.
Architecture, interiors, furniture, cabinetry, and built-ins can be developed as one coordinated residential vision.
The studio creates elegant, enduring spaces suited to Los Angeles homes rather than short-lived design trends.
Clients receive support across design, permitting, contractor bidding, construction, and Certificate of Occupancy.
Experience with Los Angeles residences includes municipal coordination and work in Historical Preservation Overlay Zones.
Founder and principal Santiago Ortiz leads each project with architectural and fine arts experience.

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 based on the project’s size, complexity, location, and the services included. A custom home requiring design, permitting, consultant coordination, bidding guidance, and construction administration involves a different scope from a focused interior or renovation consultation. Ortiz Mexia Projects, Inc. reviews the project requirements with each client so the proposed services can be understood before work begins.
Talk with the studio about your Los Angeles project scope and design goals.
By appointment, the studio serves Los Angeles and nearby communities with integrated residential architecture and design support.
Los Angeles, CA
Primary Area
Santa Monica
Additional Coverage
Beverly Hills
Additional Coverage
Discuss your property, project scope, and preferred level of architectural support.
Professional membership held by principal Santiago Ortiz
Residence featured in the Venice Vista Spring Home Tour
Work featured in Interior Design Magazine and Los Angeles Times
Share your property, goals, and desired services so the studio can discuss a considered next step.
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.