About Us

WELCOME TO Brotherton Cadillac

Local: 425-336-1089

brad Brotherton Cadillac in Renton WA

Letter from the President

Dear Friends and Family,

Thank you for visiting Brotherton Buick GMC Cadillac. I would like to take this time to share with you a little about our history and why we are a true family business.

The Brotherton Family has been serving Washington residents since the early 1900’s (1916 est) starting with Rio trucks in Walla Walla, Washington. The patriarch of our family was our great grandfather, Frank Brotherton, whose motto was “if you treat your customers like family, you are unbeatable”. Upon his passing in 1932, his son, Marion “Tex” Brotherton, took over the helm. The family carried such nameplates as Star, Marmon, Cole 8, Dort and even had Mack Trucks! In the 1940’s, Tex acquired the Chrysler Plymouth franchise and was one of the most successful New Chrysler dealers (per capita) in the nation. William “Biff” Brotherton, joined his father in 1968, but Biff’s passion was for another brand: Cadillac. In 1970, Biff opened Sunshine Chevrolet and Cadillac, running side by side with his father until he eventually bought out Tex in 1980.

Biff was not completely satisfied there though: he felt he could do so much more in a bigger market. Therefore, in 1984 he sold everything and moved to Seattle, acquiring Frederick Cadillac in Downtown Seattle. Biff won several national awards including Master Dealer as well as serving on many Seattle initiatives. Biff also carried several other franchises, including Lexus, Land Rover, Sterling and even DeLorean to name just a few.

In 1994 I joined him at Frederick Cadillac. I then moved to his Lexus store for three years, spent a short time at Land Rover, and then eventually found my home with Cadillac.

In 2001, with heavy negotiating, I convinced the family that Renton should be our new home and that Brotherton should be on our storefront once again. We all agreed and the move to Renton soon followed.

In 2005, I made an offer on the local GMC Pontiac dealership in Renton and merged the two with Cadillac. At the same time, I bought out Biff and formed a new corporation, Brotherton Cadillac Pontiac GMC. In 2006, we were awarded the Buick Franchise and in 2009, thru GM’s restructuring, we became what we are now, Brotherton Buick GMC Cadillac.

We know that the previous generations worked hard to not only run a great business, but to help build a legacy that would carry on to the next generations. We have big shoes to fill, but are sticking to the plan of taking care of our customers and employees..

I would like to thank you for your time and let you know that we understand there are a lot of places you can choose to do business. We thank you for giving us the opportunity to earn your business.

I hope to see you soon,

Brad Brotherton

We know your time is valuable. We are sure you will find our site a fast and convenient way to research and find a vehicle that's right for you. If we can be of any assistance while visiting us online, send us an email and we will promptly reply.


Welcome to Brotherton Cadillac! Here at our Cadillac dealership, we want you to have the quality experience that you deserve. We proudly offer a large selection of new Cadillac models and provide you with a team of experts eager to help you get on the road in your dream ride.

We invite you to learn more about us and what we can do here at our dealership for drivers near Renton, WA. Continue reading below to learn more.

About Us Service Brotherton Cadillac

Explore Our New Cadillac Inventory

Your journey to a new ride begins with our inventory. You can explore all of the different options you have to find your fit and be ready to get on the road.

You can search through our inventory of new Cadillac vehicles, which includes models like the Cadillac CT4, Cadillac CT5, Cadillac Escalade, Cadillac ESCALADE IQ, Cadillac LYRIQ, Cadillac OPTIQ, Cadillac XT5, and more. Each new Cadillac can deliver the performance that you need to be impactful on the road and drive with confidence.

Our new Cadillac vehicles also provide you with plenty of interior features. You can ride in comfort with the interior seating dimensions and comfortable seating. There are also innovative technology and safety features that help you stay connected, protected, and informed wherever you go.

You can learn more about our new Cadillac vehicles by reading our online reviews or browsing our detailed listings. Schedule a test drive for a closer look at the new Cadillac vehicles that we have and get behind the wheel.

About Our Fincance Brotherton Cadillac

Work with Our Finance Experts

Our finance center provides you with the opportunity to make the new Cadillac that you want today. Our experts guide you throughout the process to get you on the road in the new vehicle for you.

We start this process by learning more about you and your needs. Our experts gather your options and present everything to you in detail. We can also answer any questions you have along the way.

Our online resources are also here to help. You can get pre-approved for an auto loan by filling out the online finance application. The online payment calculator can help you prepare for your monthly payments. You can get an estimated value on your trade-in by using the Value My Trade tool.

About Our Service Brotherton Cadillac

Our Quality Cadillac Service Center

When your Cadillac vehicle is in need of maintenance or repairs, bring it to our team. Our service center provides state-of-the-art technology and equipment to properly diagnose your vehicle and complete any maintenance and repairs.

We can handle routine oil changes, inspections, tire rotations, fluid replacements, and filter replacements. We can also address repairs needed to your vehicle’s brakes, engine, transmission, tires, and even auto body work. Our parts department can also supply the genuine parts and accessories for your Cadillac.

Schedule your next service appointment online or by calling us today.

Where Can I Find a Cadillac Dealership?


Here at Brotherton Cadillac, our team is dedicated to making this experience unique for you and helping you get the ride that suits you best. Our new selection is ready and waiting, and our team is eager to help you.

Contact us today with any questions you have, or schedule your test drive to get behind the wheel of the new Cadillac vehicle that you want.


Contact Us