King County Window & Glass is a specialist in vinyl and fiberglass Home window replacements.

Are you interested in reducing street noise in your home? Would you like a greener, more efficient window? Do you have a room in a basement that would be a great bedroom, but it needs a window to qualify? We can help.

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Our Service Offerings

Vinyl Windows

Vinyl windows offer affordable excellence and modern energy efficiency.

Fiberglass Windows

Fiberglass windows are the best of the best and offer stunning modern profiles, superb energy savings and the largest windows sizes available.

Specialty Windows

Egress Windows

Adding an egress window to your home can increase the value of your home substantially. An egress window can also open the possibility of adding a master suite in the basement of an older home. King County Window & Glass manages all the details of adding egress to your home. We can coordinate dirt removal, foundation cutting, window installation and clean up, so you get professional results with no hassle.

Noise Reduction Solution

Nothing beats living in the heart of Seattle. Nightlife, restaurants and cafes, and access to amazing workplaces and the waterfront, make Seattle a thriving, amazing place to live. It also makes it noisy. When you want to calm the noise outside your home, you want to talk with a specialist that can explain the good, better and best options, manage the ordering, and then install it right.

What Our Customers Have to Say

So thankful for King County Window & Glass! Daniel was so helpful and was able to get a quote written up and sent over to my email quickly once I gave him some rough measurements. Most places I contacted only do replacements of the ENTIRE window so I was pleased to find out that KC Window & Glass would fix the affected panes for a VERY reasonable price. Jeff was able to cut the glass onsite since they were single pane. He fixed two shed windows within a couple hours. Thank you Daniel, Carla, and Jeff for your awesome customer service!

- Mikaela V.

"We recently replaced the glass in 30 windows in our home. Jeff and Sergy did an amazing job! Not only did they wear their masks and take their shoes off, they made sure our dog didn't get out as they moved in and out of the house. They were professional, efficient and tidy. The process was great from quote to completion. Carol, in the office was a pleasure to work with. Can't say enough good things about King County Window & Glass!"

- Tracy U.

"It’s been more than a week since our windows were upgraded and it’s been great!The perceived noise level is considerably lower, both traffic (which we now almost do not hear at all) and sounds like ambulance/police. Please also pass our thanks to guys who did the work – they did a great job, fast and clean!"