I have a PPOR in Leeming WA with a block size of 820m2. The house next door is up for sale and I am wondering if it is worthwhile looking at for a development. The block next door is 680m2. Both are zoned R20. Would it be possible to split the block next door into 2 of minimum lot size (350m2) by shifting my fence a little to get the extra 20m2 required to get it up to 700m2? I assume I would need to amalgamate the 2 blocks into one, then subdivide to achieve this?