We Design Community®

Founded on the core values: Quality. Innovation. Creativity. Integrity. Client Service.

We Are K/O Architects!


We Are K/O Fairground Planners!

Keffer/Overton (aka K/O architects and K/O Fairground Planners) is a full-service architecture and design firm specializing in architecture, interiors, planning, and construction coordination.


As an Architecture firm in Des Moines, Iowa and as Fairground Facility Architects we focus on historic preservation, renovation, restoration, repurpose, public, commercial, retail, cultural/museums, fairground, and entertainment project types. As commercial architects in Des Moines we work on offices, cool houses, and things as exciting as Concert Facilities, Conference Centers and Expo Halls. We are also livestock facility architects and Equestrian Designers working on arenas, multi-purpose buildings, horse barns, cattle barns, and stalling barns. We are a nationally recognized design-leader specializing in master planning, expos, entertainment, arenas, multi-purpose, stalling, equestrian, livestock and amusement related design with many projects throughout North America.


Whether you are considering an office remodel, a new building, a residence, or even new fairgrounds, give K/O a call. Even though we’re an architecture firm in Des Moines let us buy you a cup of coffee and have a conversation about your next project!

Hands Down, We Create the Best Places!

What Do We Do?

Do you have a project lead, a design idea, a master planning question, or just want to bend the ear of “your architect”?

Give us a call or let’s set-up a Video Conference, we’ll hear you out, and we’ll send you a gift card to your
local coffee shop so you can enjoy a cup of your favorite joe while we chat.

What Do We Want to Talk About?

Pros and Cons of Dirt Flooring in Arena Architecture

There’s nothing better than attending a great concert. You can hang out with your friends and sing along to your favorite songs. However, there’s one element lurking below you that you might not be thinking of – the flooring. Depending on the venue you might…


Thanks again to all 2018 IAFE attendees for stopping by the K/O Fairground Planners & Designers booth! It is always great to meet new people and re-connect with old friends. It is fun to have a conversation about your master plan and architecture projects. Congratulations to the following winners of our daily give-away:

First Impressions – IAFE San Antonio

Wow!  What a great trip to San Antonio for K/O Fairground Planners at the 2018 IAFE Conference!  It was an excellent few days of visiting with current, former and future fairground visionaries and discussing their fairground’s future plans.  Master planning seems to be on the…

What Can We Do For You?

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Master Planning, Programming, Condition Surveys, Site Utilization and Land Use Studies, Equipment Planning

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Architecture, Conceptual Design, Specialty Detailing and Specifications, Bidding, Negotiated Pricing, Design/Build

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Cost Estimating, Scheduling, Construction Contract Administration, Construction Site Observation, Construction Management

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Interior Design

Space Planning, Interior Finishes, Interior Signage, Decorative Graphics, Wayfinding

Additional Studies

Adaptive Reuse Studies, Maintenance Reports, Energy Surveys, ADA Compliance, Code Compliance, Long-Range Planning

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Facility Improvement Program

Preservation/Restoration, Accommodate Changing Programs, Meet Current Codes, Enhance Building Appearance, Reroofing, Window Replacement

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Programming, Design, Construction Documents, Specifications, Construction Administration

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Site Improvements

Site and Landscape Design, Entrance Features, Wayfinding Strategies

Our Office

A Culture Of Creativity

Our overall approach is to build a communication bridge between the client team and our design team.  This allows the client and consultant to gain an in-depth appreciation of all the issues and resources available, which instills an atmosphere of cooperation and connection.  Our team has a thorough approach, and a cooperative work ethic that sustains the full effort required for all tasks over the life of a project.  

How Did We Begin?


Key Personnel:


Chip Overton, AIA, LEED AP, President
Charles T. Overton, AIA, LEED AP, CEO
Sarah Camp Overton, AIA, LEED AP


Year Established: 1876


12th oldest Architectural Firm in the U.S.


Commercial, Cultural, Fairground, and Entertainment Planning & Design

K/O has the distinction of being the oldest active architectural firm in Central Iowa. We trace our lineage back to 1876 when Bell & Hackney opened the doors of their architectural practice. In 1993, the name was changed to Keffer/Overton Associates, Inc.


K/O is a nationally recognized design leader specializing in fairground, livestock/equestrian, and entertainment facility design.

Des Moines Architecture & Master Planning