difficult plot - noise protection regulation?

The price per square meter in the village is generally 35€. However, the next plot of land is then 2km further away at the other end of the village. Since I am a cyclist, that is too far from the workplace. Closer to the workplace, the price rises explosively. In the neighboring village, it continues at 50€/m². But there are only 2-3 plots there that no one likes. A reasonable one is priced at 75-100€/m².

The energy supply still needs to be connected, meaning water and electricity.

As I said, if the noise protection (+45000€) is really mandatory, then that’s it for the plot of land.

I have already been to the plot many times and due to the elevated position of the street, a lot of noise is already "absorbed".


I will try to find similar properties and listen to the street there.
At the same time, I will get in touch again with Town & Country to see exactly where it says that.

First of all, thanks for the good advice

Honestly, just tick it off.
The plot is therefore not developed. The phone line will also be inactive then. Is there a sewer connection available?

BUT: during our last consultation with Town & Country, we were informed that there are new noise protection regulations due to EU directives. He classified the property in a noise category 5 and said that a normal house cannot be built there.

My actual question:
Does anyone have experience with the noise protection regulation?

Hello,

what exactly is a "normal house"? We are currently building in noise category 5 as well, since behind our property there is a railway line where occasionally a regional train runs. The building permit therefore contains decibel limits that vary depending on the type of room (sleeping, living, working). In addition, bedrooms must be ventilated independently of windows. So, from Town & Country’s point of view, we are probably also not building a "normal house."

We decided on a ventilation system before we even knew about this requirement, we use 24 cm masonry instead of 17.5 cm but for the reason that 17.5 cm felt too thin to us, anyway we would have installed triple-glazed windows including safety glass; regarding the glazing thickness we are still considering whether 82 mm or 90 mm. However, none of this costs extra because of the noise category; we would have done the same at another building site. We are getting a lifting system because the basement lies lower than the sewer, but that is nothing unusual.

If you only do all these things because of the street and would otherwise skip them, you might as well look for properties that are twice as expensive.

Regards

Yes, we no longer want the property because we would have done all this only because of the road.

According to §15 of the Saxony-Anhalt State Building Code, buildings must have noise protection appropriate to their use. DIN 4109 then specifically regulates the minimum requirements to be met for the respective use. For a single-family house, there are no direct requirements for sound insulation between the rooms, as they usually belong to one unit of use. However, requirements for airborne sound insulation of external components are imposed for protection against harmful effects from outside. For this purpose, the relevant external noise level must be determined for the respective property. Either there are noise maps for the area from which the existing noise levels can be read (which unfortunately is not the case here), or the average daily traffic volumes (DTV), which are determined by regular traffic counts (every 5 years), must be used with a nomogram to determine the average noise level.

For the property, based on the traffic load (an average of 9,577 vehicles pass through the village daily), a relevant external noise level of 71 dB(A) results, which corresponds to noise level category V. This means that the resulting total building sound insulation value of the external components must have a value of 45 dB(A). This high value can only be achieved with great effort, which of course also causes corresponding costs.

DIN 4109 regulates the necessary minimum noise protection, which is intended to prevent people from being exposed to unreasonable noise levels and thus potentially suffering health damage. Therefore, these requirements must also be complied with and have the force of law; they are not “optional provisions.”

The preliminary assessment of the necessary noise protection for the said property is attached so that you can understand how the value is derived.

Since I myself could hardly find anything on the topic of soundproofing here and it is generally very difficult to get information, I would like to add something to my explanations in #15.

On the one hand, complying with the energy saving ordinance and on the other hand, meeting the municipality's requirements for soundproofing is quite a balancing act.

With thermal insulation composite systems, you have to be careful not to worsen the sound insulation value of the entire "exterior wall" construction. We had a lengthy calculation made for this.

Triple glazing doesn’t help much with soundproofing at first, but combined with laminated safety glass it improves a bit. Still, we have to upgrade the glazing in the middle and inner layers as well to achieve proper values. In addition, special insulation mats are needed for the roller shutter boxes.

Then there are the sloping roofs or the roof surface. We have found possible solutions here but have not yet decided. Insulation and soundproofing separately or combined, on/under/between the rafters, there are various options.

For the already desired equipment (triple glazing, laminated safety glass, controlled residential ventilation), we will have to invest about 15,000 EUR more to meet the requirements. Starting from standard double glazing and without residential ventilation, you’d quickly get to 30,000 EUR and more, which probably makes another property in a "quiet location" more expensive.