Just got my bto recently, like everyone, i was having a hard time to decide whether should i hire a contractor/id. Approach different contractors & ids, I finally settle down with this responsible chinese contractor. He meet me for more than 8 times to explain to me the different materials & works that will be done as I am rather fussy He had work in the industry for more than 30 years, done hdb, condo, commercial & landed and is very patience to source for the stuff that i wanted. He does not have a hdb license but the materials he used is all according to hdb laws & if hacking is involved, his partners (hdb licensed) will be the one doing the hacking to ensure all will be fine. He had send me some pics of his previous work done which i will share below. For a 4-room flat, a 33k+ quote is reasonable to me as I had choose some good materials for my housing. Would definitely recommend this contractor as he will provide some cabinets drawing and give good advice which i think is better than some ids.
Can pm me for his contact!