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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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Avatar for Alliance Contracting Solutions
Alliance Contracting Solutions
4.4(
38
)

Serving O Fallon, IL and surrounding areas

In business since 1989

Free estimates

Emergency services offered

"With a slight delay due to COVID, the work was very well done. Plaster repairs were completed, all furniture was moved away from the walls, the floors were covered. The colors were exactly as I requested, including the crown molding. The work was completed in the time quoted and for the estimated cost."
Recommended by83%of homeowners
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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

Designing a building takes 2-6 months, depending on project size, required permits, and revisions.

Yes, architects specialize in both new construction and renovation projects, ensuring that additions blend seamlessly with existing structures while meeting safety standards.

An architect plans and designs new construction and alteration projects. They often provide sketches for homes, office buildings, shopping malls, and other structures.

Typically, architects do not build homes in a hands-on sense of doing the actual framing, roofing, or other building. Architects usually do not have the training and experience to build the homes they design. An architect would need to know how to do the specific trades required to build a house, which is possible but not a common practice. A general contractor or homebuilder typically oversees the actual details of building the house that the architect designs.

The design phase varies by project size and complexity; initial ideas can take weeks, while extensive plans may extend to months for complete detailing.

The O Fallon, IL homeowners’ guide to architectural services

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