No, you cannot choose which one the most important place to get best protection. Basically, both residential and commercial need same protection, so you do not have reason skipping installing Calgary Commercial Alarm Systems. I know you run small business only, so is your business not valuable for you? If you lose this income source, so how is about your loved ones and their education need? I do not ask you to install this system due to commercial needs for me, but you can consider installing if for best protection.
Installing this system does not mean you want to get accident such as fire or rapine, but it is as prevention. When you protect your office (income source), you also protect your family members and employees. However, employees are the most important element because it will be quite hard to run your business without their help time by time.