When you're looking for a building facade cleaning service, you want to make sure that you get the right one. Here are some tips to help you find the right company.

1. Talk to your neighbors and friends who have used a building facade cleaning service before. If they have had a good experience with a particular company, then they will be able to tell you what they liked about them and why they chose them over other companies.

2. Look at the reviews left by other customers on their website or social media pages. You can also look at customer testimonials left on Google or Yelp, but those are usually more positive than negative so it may not be as helpful as reviews left by previous customers, who have actually had an experience with the company themselves.

3. Check out how many years of experience the company has in providing building facade cleaning services – this is important because older companies may not have been around long enough or have enough experience to provide quality service every time without making mistakes along the way (like cutting corners on things like quality control).