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Verified Reviews for Architectural Service pros in O Fallon, IL

*The Angi rating for Architectural Service companies in O Fallon, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Architectural Service needs.

*The HomeAdvisor rating for Architectural Service companies in O Fallon, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Architectural Service needs.

Last update on November 17, 2025

Find Architects in O Fallon

Avatar for Evolution Drafting
Evolution Drafting
3.1(
73
)

Serving O Fallon, IL and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Excellent Experience – Highly Recommend company. I had a great experience working with this drafting company. The team was professional, responsive, and easy to work with. A special shoutout to Collin Kelsch and Rosa Chatwin for their outstanding cooperation and attention to detail throughout the project."
Zeal Floor Plan
Charcoal
Palm Floor Plan
Charcoal Floor 2
Charcoal Floor 1

+23

Response time1 day
Response rate100%
70 neighbors recently requested a quote
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Yung Architect
New to Angi

Serving O Fallon, IL and surrounding areas

In business since 1984

Ed Yung Architect achieves your vision by focusing on elements most important to you. Elements such as creative input on design, energy efficiency, and space planning. We have been the leading design firm in the area for over 20 years. We are committed to your complete satisfaction in design. Listening first to your needs, then creating a design that will meet your needs and stay within budget is key factors to your satisfaction.

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Architects questions, answered by experts

In most cases, you should hire a draftsperson for simpler projects like minor home renovations, and you should hire an architect for new construction, structural changes to your home, and large home add-ons. If you’re working on a larger project that demands an architect or structural engineer, your professional will often have a draftsperson on staff and include their services in your estimate.

Costs vary depending on project complexity and scope. Architects generally charge a percentage of the total budget or an hourly rate for their services.

Drawing your own floor plans is acceptable for many kinds of projects, including interior design and room layout. You can use floor plan software to create the plans but keep in mind that the floor plan will only be as accurate as the measurements you take and enter into the software.

The architect you choose to work with should have experience with the type of design you’re interested in, a portfolio of similar projects they’ve completed, and a process and work style that aligns with your expectations. A seasoned architect will be able to provide you with all that information so you can ensure they’re a good fit.

The process typically takes 2-6 weeks, depending on the project size and level of customization.

The O Fallon, IL homeowners’ guide to architectural services

From average costs to expert advice, get all the answers you need to get your job done.

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