Aduh! I just realised I haven't got a sertifikat IMB, I've only got the blue metal plate on the outside of the house. I'll have to chase this up with the developer.
paulseawind wroteAlso, store scanned images on your computer.
Yes, I do this. It makes it easy to print off a couple of copies whenever they're needed. I also keep a copy of everything in the cloud, which is just included with my regular backup routine.
paulseawind wroteAnd keep the originals in a very safe place. Not the same as the building they pertain to.
Mine are in Australia.
Not sure I really agree with this. I don't think it's worth the hassle, they can always be re-issued. It might be difficult or costly though. Indonesians sometimes act as though original certificates are irreplaceable (eg. Land, car or motorcycle) but that's not really true. No system can work like that.