According to REIWA, Dalkeith and Peppermint Grove have ~8% growth rates for past 10 years, why do you think it'd be different going forward? They've always been the highest entry point.
I wouldn't put too much stock in Reiwa data, not exactly the most independant or objective of organisations where Perth real estate is concerned. Regardless Dalkieth and Peppy Grove is really an exclusive market within a market .
I wonder whether Floreat might be the suburb to get a haircut in terms or zoning laws, a lot of very large blocks with seriously old knockdowns only on them. Even the houses situated on the main arterial routes through that suburb are set well back from the road and surely the local councils would be itching to see them broken up and be paying the extra rates that go with a bit of higher density.
Nedlands is a nice suburb on the southern side of Stirling Highway although the Northern end closer to the railway line isn't as popular and this is where most of the cheaper properties within the area are located. It's a well located suburb which offers a lovely lifestyle close to the city without the terrible congestion which afflicts the likes of Cottesloe and Mosman Park.
Jolimont, Shenton Park both very nice but difficult to get into. Plenty of execs with families willing to rent or buy here because of the High School and proximity to the city as well as all the sporting facilities close by.
Claremont, Cottesloe, Mosman Park, overpriced and overrated in my opinion.
Subiaco, too many apartments( a glut ) has turned this into legoland, terrible traffic congestion, commercial properties struggling to find tenants, most of the older houses have already been chopped in terms of land area.
Apart from proximity to the city, not sure what the attraction will be especially when they lose the football stadium as well.
At best is always fully valued and is a massively overrated place.