In addition to the good policies you mentioned, construction should be encouraged in areas with high rents. The article talks about homeowner NIMBY politics as if it's an inalienable and insurmountable fact of life, but it's definitely possible to upzone areas and/or whole cities. (Shoutout to Minneapolis 2040 removing single-family zoning.) This is more politically tenable in certain areas using inclusionary zoning, basically allowing more units in a building as long as X% of them are reserved for low-income renters, charging no more than 30% of those renters' incomes.