Government commits to setting up an independent fiscal institution to provide non-partisan costings of political parties’ policies 

thats the problem, national still wont admit there is an issue so hence wont come up with any solutions apart from buying motels.
and yes labour do need to be pushed on building and immigration (which they have back tracked on big time)

National attempted RMA reform - the primary thing they could do to make housing cheaper without getting heavy handed (and un-democratic) over forcing local govt to perform better to help reduce costs. They were stymied by Labour and NZF and Greens and so were unable to get any reform through.

Meanwhile Auckland Council has been Labour controlled (Len Brown and Phil Goff) for the last 8 years, overseeing the rise of the whole housing crisis there, they have control over the district plan etc and have closest responsibility for the evolving clusterfuck that is Auckland's overpriced housing with their high regulatory burdens imposed and restricted land supplies adding 100k's to cost of building new houses (thereby setting price floor).

The 'rock-star' economy of National's last two terms saw house build rate rise continuously from 1000/month in 2011 to 3000/month in 2017, a 15% compounding rise per year, that if continued would have outpaced the (broken) kiwibuild promise of extra 800/month within 2 years. 3000/month is enough to keep pace with immigration at average 2.4 occupancy.

With their admission of inability to deliver anywhere near their promised build rates it appears that the Coaliton is not going to improve the situation at all, and compared to national's trajectory on house build rates it rather appears that the situation is going to be worse.

What the Greater Auckland opinion piece failed to mention is how we will fund the completion of the motorway network.

By raising the age of entitlement for National Superannuation up to 67 by 2032, we will save $58 billion over twenty years. This amount will be siphoned off into an Auckland Transport fund and used to pay for the contrsuction.

Greater Auckland suggested our motorway plan would cost $29 billion, which is HALF of the provision we are making.

We will also cancel Labour's fuel tax plans and reverse all fuel taxes increased under the previous National government.Electronic Road Pricing will be introduced, using pre-paid cards placed on vehicle dashboards which will be debited as people pass through gantrieson major arterial routes or highways. The amount will vary depending on congestion; creating incentives for people and businesses to adapt to using their vehicles during quieter times. The charges currently in place will be displayed on the gantries and a transport app which gives people as much information as possible to help them plan their journeys.

As you can see, the motorway building plan isn't just expenditure neutral; there will be billions of dollars in change left over. ERP and a much lower fuel tax can then be used to fund maintenance as each section is completed.

What's more, as a strong believer in private property rights, we will endeavour to ensure as few residential properties as possible are impacted as our Northcote crossing proposal will prove when we release it near the end of the month.

An enormous amount of planning and detail has gone into this proposal and, unlike Labour's budget figures, the math adds up.

I've been door-knocking in the Northcote electorate daily and I am yet to meet a single voter on Onewa Rd who opposes our Northcote crossing plan.