I guess you have all the individuals contacts for the renovation? 1) Usually Hacker and Tilers you can use as one contractor. You also need to ask them to get for you the HDB permit. The duration will take about 2 to 3 weeks depending on how much the worker they provide. You can tell them about your timelime so that they can supply more manpower. 2) After tiling is up, you can get the plumber and electrician to install water pipe and wiring respectively. It should take a few days. However wiring may need to come again to install the lights and others. 3) Can get the aircon man to come and istall the aircon. 4) After all the tiling is done, you need to call the carpenter to come to your site to do the measurement. It will take a week or so to do it at thier factory. Installation will take about one day after wiring and piping is up. 5) Window Grill you also need to call them to measure after the tile is up. One week production. One day of istallation. Lastly will be paint and chemical wash. Here are abit of knowledge that i know off. All the best.
