My wife and I rent a house in WA. We renewed the lease last year and the commencement date of the new lease was 4/10/14 and six-monthly inspections were agreed to by all parties. The real estate agents claim that as our last inspection was in August 2014 our next inspection should be on the 10th February 2015. Firstly, that is only five months but my argument is; if we signed a new lease that commences on 4/10/14 should the inspection not be on 4/4/15? After all, that is six months after the commencement date of the current lease. Surely the previous lease becomes null and void after signing the new one, does it not?