I sold my place and needed the smoke detector and RCD upgraded to get the certificate for settlement as per WA legislation. The tradesman was booked for 0900 and arrived at 0859. Job was done without any hassle and all rubbish was swept and put in my bin. I was given an invoice and then moved house, forgot all about it and got a polite reminder about 3 weeks later. Paid by BSB transfer, again hassle free.
All round good service.

Approximate cost: $550