Finding the Right Architect for Home Addition

Planning a home addition requires more than attractive ideas—it calls for an architect who can understand your goals, coordinate consultants, navigate permits, and guide the project toward completion. This resource explains what to look for, which questions to ask, and how an integrated residential design practice can help homeowners in Los Angeles and Colorado’s Roaring Fork Valley make informed decisions.

Architect reviewing home addition plans with homeowners

Our Home Addition Services

Explore integrated design, permitting, visualization, and project guidance for thoughtful residential additions and alterations.

Addition Design

Develop a tailored addition or alteration for a single-family home or residential building, balancing existing character, new function, sustainability, and timeless design.

Permit Procurement

Receive guidance through building permit procurement, with coordination among clients, consultants, contractors, and relevant municipal agencies throughout the process.

Interior Integration

Coordinate interior design, custom cabinetry, furniture, and built-ins so the addition feels connected to the home rather than treated as an isolated extension.

VR Design Review

Use immersive VR presentations and three-dimensional models to study proposed spaces, understand design decisions, and participate more confidently in the process.

Construction Guidance

Continue with project guidance and construction administration from design and permitting through implementation and completion, supporting clear coordination across the team.

Historic Remodels

Approach additions and remodels in Historical Preservation Overlay Zones with sensitivity to existing architectural integrity and opportunities for modern sustainable systems.

Integrated Residential Design

Choose Design Guidance That Connects Every Detail

The right architect helps turn an addition from an early concept into a coordinated residential project. Ortiz Mexia Projects, Inc. combines architectural design, interiors, permitting support, visualization, and construction guidance for homes in Los Angeles and the Roaring Fork Valley. This integrated approach is especially useful when an addition must respect an existing home, local municipal requirements, and the character of its surroundings.

Architect presenting a home addition concept
The Ortiz Mexia Difference

Why Choose Ortiz Mexia Projects, Inc.?

Work with a design-led practice that connects architectural thinking with practical project coordination.

Integrated Expertise

Coordinate architecture, interiors, furniture, cabinetry, and built-ins through one connected design practice.

Timeless Design

Create elegant residential additions suited to lasting use rather than short-lived trends.

Permit Guidance

Navigate project permitting with support for clients, consultants, contractors, and municipal agencies.

Local Understanding

Serve Los Angeles and the Roaring Fork Valley with awareness of distinct residential contexts.

Meet The Design Team

Get to know the principal behind this architecture and design practice.

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

Do I need an architect for a small addition?

A small addition may still benefit from an architect when the project changes the home’s layout, affects structural or exterior conditions, requires permits, or must respond to a historic overlay zone. An architect can help clarify feasibility, develop coordinated drawings, support permitting, and connect design decisions with construction. The appropriate level of service depends on the project’s scope and municipal requirements.

How much does it cost for an architect to draw up plans for an extension?

What should I look for when choosing an architect for an addition?

What services can an architect provide for a home addition?

Can an architect help with building permits for an addition?

How involved should an architect be during construction?

Can an architect design the interiors of a home addition too?

Does Ortiz Mexia Projects, Inc. serve my area?

Ready To Discuss Your Addition?

Talk with the design team about your home, goals, and project direction.

Areas We Serve

By appointment, the studio supports residential projects across Los Angeles and Colorado’s Roaring Fork Valley.

Los Angeles, CA

Primary Region

Roaring Fork Valley

Colorado Region

By Appointment

Availability

Is Your Property In Our Service Area?

Confirm availability and discuss your addition with the studio.

Recognized Practice

Awards and Recognition

AIA Associate Member recognition

AIA Associate Membership

Professional association membership held by principal Santiago Ortiz.

Published architecture and design work

Published Design Work

Projects featured in Interior Design Magazine and the Los Angeles Times.

AIA Los Angeles home tour recognition

AIA Los Angeles Home Tour

Ortiz-Wheeler Residence featured in the Venice Vista Spring Home Tour.

Start A Conversation About Your Addition

Share your property, goals, and questions so the studio can discuss the right next step.

Contact Us Today

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