The main action advocated by the author here is to increase efficiency (in insulation, appliances, food production, transportation) as a means to curb CO2 emissions and slow climate change - all very important. Lately I've been reading Saul Griffith's book "Electrify" which proposes a different tack - "simply" electrify all energy usage and let people maintain their current lifestyles exactly. Interestingly, doing so…
And that's essentially the same for the point: build new houses. It's surely positive and needed in the long run, but to do so you need many resources, wood itself is renewable at a certain level of demand, not renewable above that level. Long story short: not counting some mass-genocidal ideas, at a level even the original nazi probably never though of IMVHO the quicker changes possible is start to re-localize anything that can be re-localized, starting from a massive agricultural plan with very strong incentives to try to maximize local, even inefficient, food production to cut transportation as much as possible.
For many area of the planet that's still not possible tough, too many people in such areas respect of the nature local production capacity... Local and inefficient agriculture might run at a slow peace, for instance instead of powerful diesel tractors fields can be handled by less powerful on-rails electrical agrivoltaic tools, something unsustainable without government incentives, but ultimately probably doable with. That's can reduce general pollution to more manageable levels and still provide enough food in most cases. Pushing rails with similar criteria (only goods trains, running when there is enough energy, slow, inefficient, but enough for non-perishable goods).
Quicker than that I know only mass genocide and unpleasant things like that.