How to Choose the Right Custom Building Design Firm

Choosing a custom building design firm shapes every part of your project, from the first concept through permitting and construction. Learn how to compare design philosophy, technical capabilities, communication style, project guidance, and experience with homes, remodels, additions, and interiors. This guide helps homeowners identify a thoughtful partner for a cohesive, lasting residential environment in Los Angeles or Colorado’s Roaring Fork Valley.

Architect reviewing custom home plans with homeowners

Our Custom Design Services

Explore integrated residential design, permitting, and project guidance capabilities for thoughtfully planned custom building projects.

Residential Design

Full-service custom residential design for single-family homes through 4-unit buildings, including architectural planning, interiors, sustainability, and coordination through construction completion.

Permit Procurement

Guidance through building permit procurement, with coordination among clients, consultants, contractors, and municipal agencies from design through Certificate of Occupancy.

Project Guidance

Ongoing construction administration and project guidance help connect design intent with implementation, supporting decisions, coordination, and detailed project orchestration.

Thoughtful Project Guidance

Choose A Partner For The Whole Journey

The right design firm should offer more than attractive drawings. Look for a practice that can understand your goals, coordinate architectural and interior elements, navigate permitting, communicate with consultants and contractors, and remain engaged through construction. Ortiz Mexia Projects, Inc. brings these capabilities together for residential projects in Los Angeles and Colorado’s Roaring Fork Valley, with a timeless approach shaped by local project experience.

Architect presenting a custom home design to clients
An Integrated Approach

Why Choose Ortiz Mexia Projects, Inc.?

Evaluate a design partner whose services connect vision, detail, permitting, and implementation.

Integrated Expertise

Architecture, interiors, furniture, cabinetry, and built-ins can be developed as one cohesive residential vision.

Timeless Design

The practice favors elegant, enduring solutions over trend-driven choices for homes in Los Angeles and Colorado.

Hands-On Guidance

Clients receive coordinated support with consultants, municipal agencies, and contractors throughout the project.

Immersive Technology

AI and VR tools help clients study proposed spaces and improve design communication before construction.

Meet The Design Leadership

Learn about the principal guiding Ortiz Mexia Projects, Inc.’s residential work.

Portrait of Santiago Ortiz, Principal and Founder of Ortiz Mexia Projects, Inc.

Santiago Ortiz

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.

Frequently Asked Questions

What should I look for in a custom building design firm?

Look for a firm whose design approach fits your goals and whose experience matches your project type. Review relevant residential work, ask how the firm handles permitting and consultant coordination, and clarify who remains involved during construction. It is also important to understand how the team communicates design decisions, uses visualization tools, and integrates architectural, interior, and built-in elements.

How do I know if a design firm is right for my project?

Can a custom design firm help with building permits?

Should I choose a firm that handles design and construction guidance?

What types of residential projects can Ortiz Mexia Projects, Inc. design?

How can VR help with custom building design?

Does the firm serve both Los Angeles and Colorado?

What should I ask before hiring a design firm?

Ready To Discuss Your Project?

Talk with the design studio about your goals, property, and project direction.

Areas Served By The Studio

Ortiz Mexia Projects, Inc. works by appointment across Los Angeles and Colorado’s Roaring Fork Valley.

Los Angeles, CA

Primary Market

Roaring Fork Valley

Colorado Region

By Appointment

Availability

Is Your Project In The Service Area?

Confirm availability and discuss whether the studio fits your project.

Published & Connected

Awards and Recognition

AIA associate membership recognition

AIA Associate Membership

Professional affiliation held by principal Santiago Ortiz.

Interior Design Magazine feature recognition

Interior Design Magazine

Firm work has received architecture and design publication coverage.

Los Angeles Times feature recognition

Los Angeles Times Feature

Residential design work has been recognized through local media coverage.

Start A Conversation About Your Project

Share your goals and property details so the studio can discuss the right design path.

Contact Us Today

For immediate assistance, feel free to give us a direct call at +1 (310) 600-0241.