Commercial Window Cleaning

Expert Window Cleaning for Office & Retail

gray building with small bushes

Very satisfied with the work DeMark's did for us: they cleaned the windows, the sills, and screens and did a really great job. The young men who came to work were thorough and hardworking. They were also very pleasant and professional. Everything looks great & we will hire DeMark's to do our windows every year.

sitting area with windows and black chair

Take the Dirt Off of Your Windows

Your business is a representation of your community. Having clean windows is what brings pride to your business and shows the community that you are there to represent your community. We realize that clean windows not only help your company represent your community but also show that you care about your business and if your building is clean and safe.

Property managers, building managers, restaurant managers, and janitorial companies all appreciate DeMark’s dedication to superior cleaning of commercial facilities. We will provide you with superior commercial window cleaning service to keep your business the pride of the neighborhood. Call us today to schedule an appointment.


What Our Clients Say About Us


With over 200+ 5 Star Google reviews.

Quality. Value. Peace of Mind.

Routine Maintenance for Better Views

Our routine maintenance services provide peace of mind by offering scheduled cleaning time that align with your calendar. With DeMark’s, you can confidently plan your day, knowing that your windows will be tended to at the scheduled date, leaving you free to focus on what matters most to you and your business. 

We offer a range of flexible cleaning schedules to cater to your business needs. Choose from our options of weekly, bi-weekly, monthly or quarterly cleanings. Whether you prefer the frequent weekly cleanings or the convenience of quarterly appointments, we have a plan that suits your lifestyle and ensures your windows stay in top condition. 

Experience the transformative effects of regularly cleaned windows with DeMark’s Window and Pressure Cleaning Services, a company built on routine window cleaning services. Contact us today to schedule your routine maintenance and enjoy the benefits of impeccably clean windows. 

gray building commercial property

Satisfaction Guaranteed

We guarantee satisfaction with our hard work and professionalism.

Hassle-free customer service

Our customer service representatives are here for you.

Professional and Friendly Staff

We strive to be professional and friendly with the best service.

What Makes DeMark's Different?

You will receive experience and knowledge when you choose to have your exterior areas cleaned. We take pride in providing knowledge about our process with our work.

Professionalism and friendliness are what drives us to be the best. We work hard to show our customers we care about their home and their time.

We use advanced technology cleaning equipment and products for the best results when cleaning your exterior areas. 

Your home will be cleaned with the best cleaning products in the market and will shine with beauty after our professional cleaning process.

brick building with Demarks professional cleaning windows
beige and brick building with windows and tall grass

Are Your Windows Dirty?

Did You Leave your Windows Dirty?

Ugliness and a lack of professional care are seen when the windows on your commercial building are left dirty. Customers and employees begin to see the lack of care taken to protect their health when working in your building or doing business on your property. Many employees may also begin looking at other opportunities to move on to other companies because of the uncleanliness of your business.

DeMark’s Window and Pressure Cleaning will remove the reputation of uncleanliness with professional commercial window cleaning. Your professional image will be maintained and our dedication to keeping your storefront or facility clean will make your employees happy to be a part of the company. Contact us today to make an appointment.


Professional. Affordable. Reliable.

Make Your Neighbor Jealous Because Your Home Looks So Good

Keep Your Building Safe

Year-Round Brilliance

We pride ourselves on offering year-round window cleaning solutions that defy the constraints of weather. No matter the temperatures or the elements, our highly skilled technicians are equipped with the latest tools and expertise to ensure your windows shine brilliantly in every season. 

Our team can get there for you and your business for any inspection clean, grand opening or other special events, no matter the Wisconsin temperatures!
Commercial Pressure Washing

Our Service Areas

Get Ready For Amazing Results

Waukesha County

Washington County

Ozaukee County

Milwaukee County


What's Next?



One quick call to our world-class customer service team will answer your questions and help you solve your problems.



With scheduling made easy, you’ll be able to pick a time that works for you. Your time is valuable. We get it!



Sit back and relax knowing that experts will be doing the work and you won't have to lift a finger.