Those sorts of issues can be very different depending on the specific market. In some places, the biggest issue for affordable housing is just getting more stock built within the right price bracket.
Eg, a city might have plenty of large detached houses, and expensive high-rise residential buildings but not enough of the more affordable type of buildings like "low rise" developments of 60-100sqm flats.
For analogy, imagine a world with plenty of iphones, but not enough cheap androids. A €200 phone is a decent phone, affordable and €200 is a viable price for the OEM. Subsidies aren't required. For phones, these market conditions guarantee that the supply will be sufficient. In real estate, they don't.
Markets like this will tend to show really price/sqm at the lower end, relative to the higher. Eg a fancy, 250sqm house costs just 2x of an old 65sqm flat even though land and building costs are the same per sqm.
Eg, a city might have plenty of large detached houses, and expensive high-rise residential buildings but not enough of the more affordable type of buildings like "low rise" developments of 60-100sqm flats.
For analogy, imagine a world with plenty of iphones, but not enough cheap androids. A €200 phone is a decent phone, affordable and €200 is a viable price for the OEM. Subsidies aren't required. For phones, these market conditions guarantee that the supply will be sufficient. In real estate, they don't.
Markets like this will tend to show really price/sqm at the lower end, relative to the higher. Eg a fancy, 250sqm house costs just 2x of an old 65sqm flat even though land and building costs are the same per sqm.