Guides: housing, building, energy

Guides on the built capital — step by step, with official sources; short versions, the German text is leading. They are not legal, funding or energy advice.

• Lowering heating costs in a rented flat
• Replacing a heating system
• Plug-in solar on the balcony
• Solar on an apartment building (owners' association)
• Living together in Berlin — options and advice
• Understanding planning in your neighbourhood