What are the opening hours?

Monday 8am - 5pm Tuesday 8am - 5pm Wednesday 8am - 5pm Thursday 8am - 5pm Friday 8am - 5pm

Guernsey US

Name: Guernsey US
Address: 5555 N Grand Boulevard, Oklahoma City, OK, 73112, US
Telephone: (405) 416-8100
Price range: $

Guernsey is a multidisciplinary design and consulting firm advancing sustainable practices, enhancing the built environment, and 100% employee-owned.

We are a multi-discipline firm, employing engineers, architects, planners, consultants, environmental scientists, interior designers, analysts, accountants and managers. Our clients include federal, state and local government; military entities; utilities; Native American Tribes; universities; Fortune 500 companies; oil & gas companies; unicorns and more. Okay, so maybe not unicorns, but the rest

is true, and because we offer this all under one roof, we’re able to collaborate efficiently. Thus, giving you access to expert advice in a variety of disciplines and business sectors. More than 85 years of history is a hard thing to sum up, so let’s see what we can do to relate ours to yours …check us out at www.guernsey.us

09/04/2026

A little business. A lot of connection. And plenty of fun along the way.

Our Annual Meeting brings Guernsey employee-owners together to talk about where we’ve been, where we’re headed, and the part each of us plays in getting there.
But just as important, catching up, sharing laughs, and spending time with the people who make Guernsey, Guernsey.

Because when you’re employee-owned, the business is personal and the people are a pretty big deal.

09/02/2026

Some projects ask you to create something new. Others ask you to honor what came before.

In 2017, our team designed the first phase at Cimarron Electric Cooperative. Nearly a decade later, we had the opportunity to return and complete the next chapter.

At first, that may sound straightforward. In reality, it meant understanding every decision made years earlier, from the design intent and materials to how people experienced the space, and ensuring the new work felt like it had always belonged.

It's about making the transition disappear. 💛🔌

08/27/2026

A wall that knows when to disappear.

This NanaWall is one of the features we’re especially excited to use.

One person can easily open the glass panels, bringing the outdoors in. We'll be left with this fantastic view of downtown Oklahoma City.

08/24/2026

The road to your next adventure starts here. ✈️

We’re giving Will Rogers International Airport’s passenger bridges a refresh! Our team has been working behind the scenes to improve these important connections between the terminal and the aircraft. What you will notice is a modernized look as well as new air-conditioning units to cool you down while you wait to board.

It may be just a short walk to the plane, but there’s a lot of design and engineering that goes into getting you there.

08/21/2026

We sent some of Guernsey’s engineers to Texas to beat the heat… but apparently, the heat had other plans.☀️

Our team is on-site, conducting full-time observations and supporting a hyperscale data center through every stage of the process.

08/18/2026

The Guernsey HQ is kinda chic. ✨

08/14/2026

One summer. Countless lessons. Lasting connections.

Over the past few months, our summer interns brought fresh ideas, curiosity, enthusiasm, and a willingness to learn that made an impact on our team. We're grateful for the time we shared and excited to see where their journeys take them next.

Wishing all of our summer interns a successful school year ahead; we'll be cheering you on every step of the way. 🎓 ✨

08/13/2026

Congratulations to Abdiraham Haibe for being a scholarship recipient of the National Council of Structural Engineers Associations (NCSEA) Young Member Awards.

The scholarship focuses on leadership and the recipient's contributions to an organization's success. Abdiraham has served for two years as the chair of the Oklahoma Structural Engineers Association Young Members (OSEA YM). Under his chairmanship, Abdiraham has successfully increased recruitment and member retention since 2020.

The scholarship allows him to continue his professional development experience. We are so proud of you, Abdiraham!

08/12/2026

There is more to interior design selection than meets the eye.

Every color, material, and element is selected with intentionality to ensure that whatever space is being designed best serves its purpose and accurately represents the mood and feel that the client desires.

Our interior designers worked with the ADPi chapter at Ole Miss to create flexible spaces that promote sisterhood and togetherness while also making the most practical areas look and feel glamorous.

We cannot wait for the ladies of Alpha Delta Pi to enjoy their home for years to come!

| Alpha Delta Pi at Ole Miss

08/11/2026

Guernsey was thrilled to celebrate with the City of Lawton as the McMahon Memorial Auditorium reopened its doors!

Our design team worked diligently to modernize a landmark that holds a special place in the hearts of those who call Lawton home. Phase One of the project focused on improving the building’s safety, accessibility, and functionality, including upgraded mechanical systems, a new fire suppression system, ADA access to the mezzanine, balcony, and stage, and expanded women’s restrooms.

We’re proud to partner with municipalities like the City of Lawton to preserve the places that matter while creating spaces that are ready for the future. Here’s to the next chapter of McMahon Memorial Auditorium!

| Lawton Oklahoma, City Government

Address

5555 N Grand Boulevard
Oklahoma City, OK
73112

Opening Hours

Monday	8am - 5pm
Tuesday	8am - 5pm
Wednesday	8am - 5pm
Thursday	8am - 5pm
Friday	8am - 5pm

Telephone

(405) 416-8100

Website

http://www.guernsey.us/

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