Not everything that the federal government promises is in their hands.
Even if the government's will is as clear as it is for the real estate market: 400,000 new apartments are to be built every year.
Building Minister Klara Geywitz (SPD) continues to promise this despite cost increases in construction.
But more people than just the Berlin government district have to play along.
To boost housing construction in popular neighborhoods, cities must designate zoning, advocate for densification, and allow for top-ups.
That's a good thing, because centralism should hardly determine which house is built where.
What has to fit into the cityscape?
Locally, however, people often have other interests.
Then houses should not be too high to fit into the cityscape.
Allotment gardens and other green spaces are to be retained as recreational areas.
The monument protection slows down some expansion.
This conflict of objectives can also be found in the expansion of renewable energies.
In principle, few have anything against green electricity, but when it comes to a change in the community, things often look different.
Then photovoltaic systems should fit into the cityscape and hardly be noticed.
Economists have now shown that stricter building codes for solar roofs in communities also result in less solar power.
The regional implementation must be considered and courted much more than before: Because in the end the government goals for the expansion of green electricity and for the construction of housing are largely decided locally.