Top-rated architects.

Get matched with top architects in O Fallon, IL

Enter your zip and get matched with up to 5 pros

Need a pro for your architectural service project in O Fallon, IL?

Select your specific project to find the pro for you.

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
Request Quote
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
Request Quote
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.

Request Quote
Architects questions, answered by experts

When conducting space planning, building codes and regulations need to be considered. As long as you are taking them into account and discussing them with the architect, you should be able to do your space planning appropriately.

If your project is complex, it may make sense to hire an architect to draw plans. An architect might also be a good person to hire if you want to ensure your plans adhere to building codes and regulations.

Hiring a contractor with knowledge about historic renovations and reviewing their previous work is important. You can find a historic home renovation contractor by calling your local historic preservation office, historical society, or any local historic museums nearby. The staff may have suggestions for specialized contractors who have worked for them. You can also ask them about historic home restorations that you have seen and liked in your area to get recommendations for pros.

The country's most famous Neoclassical architecture appears in major government buildings and college campuses. The White House is unmistakably the most famous example, though the Capitol Building and Thomas Jefferson's Monticello are also iconic uses of the design.

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

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.

See all articles

What do you need done? We’ll find top pros.
  • 🌱 "Mow a small front yard"
  • 🛠 "Fix a leaking pipe under the sink"
  • 🏠 "Repair shingles on an asphalt roof"