ᐅ Estimating Mandatory Renovation Requirements

Hello, my wife and I are looking for a house. Depending on the age and type of building, there may be legal obligations for renovations. It is very important to clarify exactly what must be done within two years after purchase before buying.

Is the only option to have an energy consultant inspect the house and possibly consult a chimney sweep? Or can I, for example, assume that there is no legal renovation obligation for a semi-detached house built in 2000?

What kind of renovation obligation? It’s yours, and as long as it’s yours and it doesn’t collapse or drop any bricks onto the sidewalk, the authorities are satisfied. If there is an oil stove inside and you want it like that, then that’s how it is. If there is no hot water inside and it doesn’t bother you, then that’s how it is. Karsten

Hello, thanks for the response. Of course, heating systems need to be replaced after 30 years, whether gas or oil. But another mandatory renovation could be the insulation of the roof or the top floor ceiling. Whether this needs to be done depends on the thermal transmittance (U-value) of the current insulation. Obviously, if there is no insulation at all, it definitely has to be done within two years, but if insulation is already in place, I can’t easily judge whether that meets the legal requirements or not.

Or am I misunderstanding something?

Where did you get that from? For a heating system, for example, there are specific values depending on the year of construction that the chimney sweep measures. If those are okay, then there’s no issue. If a replacement is necessary, then it must be replaced. Very old coal stoves, etc., are not even covered. Whoever still has them and wants to keep them, for example in Zwickau, should be allowed to do so. It’s a marginal issue anyway. And insulation? I don’t know of any insulation requirements for existing buildings. For new builds, yes, but for older buildings, I am not aware of any. Karsten

Google search “statutory renovation obligations,” the first result provides an overview.

For old heating systems that are 30 years or older and operate on constant temperature, they need to be replaced as far as I know. I also think that something has to be done with the facade if X% is renovated. However, it seems this mainly applies to the heating system, since who really pays attention to that?

Other than that, some measures like insulating the top floor ceiling are very simple, inexpensive, and effective.

For a house built in 2000, there should generally be no issues.