Kim Tiam Building Contractor Pte Ltd is a builder at 212 Hougang St 21 in Hougang, Singapore, holding a 4.0 Google rating and an entry in the Building and Construction Authority's contractor directory. Choosing a builder in Singapore starts with paperwork as much as price: check the firm's BCA registration, and for HDB flats — the bulk of Hougang's housing — remember that hacking walls needs approval and noisy work is limited to weekday hours. Expect a proper site visit before any quote: a good builder measures, asks about waterproofing and wiring, and gives an itemised figure rather than a lump sum. Regulars suggest asking who supervises the site day to day, since smaller firms often rely on one experienced foreman. Kim Tiam's Hougang Street 21 address puts it in the middle of an estate where such work never runs short.