I booked the project with OSA just one week before I moved in my new condo. There are plenty of jobs needed to be done, like install all appliances, replace old vanity, replace all old valves, replace new toilet, install new lights, put floor tile and wall tile in my bathroom, and so on. Thankfully, OSA finished all projects before the day I moved in with high work quality, I really appreciate it. Also, they are very trustful, I gave my home key to them so they can come any time to do the work. I would definitely recommend OSA to all my friends who needs to do electricity, plumb job for their house or condo.