4.8 
300 *The Angi rating for Window Cleaning companies in Niwot, CO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Window Cleaning needs.
*The HomeAdvisor rating for Window Cleaning companies in Niwot, CO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Window Cleaning needs.
Last update on May 20, 2026
Serving Niwot, CO and surrounding areas
Approved
In business since 2002
Free estimates
Emergency services offered
"Christopher and Garrett were a delight to work with in having our windows cleaned. Garrett was meticulous in his work ( a big job) and he did not waste any time and got the job done efficiently."
Serving Niwot, CO and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Free estimates
Small jobs welcome
"Exterior windows were cleaned ... excellent job."
+68
Serving Niwot, CO and surrounding areas
Approved
In business since 1999
Free estimates
Small jobs welcome
"They were prompt, professional and did a great job. My windows sparkle"
Serving Niwot, CO and surrounding areas
Approved
In business since 2019
Free estimates
Emergency services offered
"Cleaned inside and outside of windows as well as storm doors. Did an excellent job and even came back a second day to finish the work. Windows look great and communication from the team was great!"
+28
Serving Niwot, CO and surrounding areas
Approved
In business since 2023
Free estimates
Credit card accepted
"Affordable pricing and extremely good work. Our windows sparkle as if they were brand new, maybe even better. I will definitely hire Hazen and JHJ Window Cleaning again."
+6
Serving Niwot, CO and surrounding areas
Approved
In business since 2010
Free estimates
Customers say: True professional
"Tyler did a fantastic job on all of our windows! They look so much better than they ever have before! We would recommend him to anyone who would like crystal clear windows!"
+13
Serving Niwot, CO and surrounding areas
Approved
In business since 2023
Free estimates
Emergency services offered
"Remember the days when you could trust a contractor to do an amazing job, You didn't need an estimate because you knew they would never rip you off. Their work and attitude were always exceptional. Well, the days of old are back with Spyglass. He is on time, first class, fabulous work and trustworthy. He does our window cleanering, gutters and special projects we need as elderly clients."
Serving Niwot, CO and surrounding areas
Approved
In business since 2024
Free estimates
Credit card accepted
"This was extremely excellent service. They cleaned very dirty windows and screens beautifully."
+1
Serving Niwot, CO and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Free estimates
Small jobs welcome
"We had Seth come clean our windows at home. He was on time, professional and affordable. Windows were super clean when the job was complete, and he ensured we were happy before he left. Will use again."
+38
Serving Niwot, CO and surrounding areas
Approved
In business since 2024
Free estimates
Emergency services offered
"Darian and Travis were quick to deliver great service when I needed an overdue cleaning. Would highly recommend them"
+5
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