"insignificant remaining services" is also a trap. Only what would prevent you from moving in is essential, for example a missing window. A defective window, on the other hand, is only insignificant, since you can still live inside. A partially functioning electrical system is also insignificant, since you can still live inside. etc. So you always have to pay and then chase after the defect correction.
Experience: Company still receives money: Craftsman shows up at the construction site the next morning and fixes the defect. Company already has all the money: after long begging and threats with a lawyer, you get an appointment at the earliest in 4 weeks.