Air Pollution Control

Air pollution control refers to the totality of legal and technical measures designed to protect people, animals, plants, and property from harmful environmental impacts. In the context of real estate, this primarily refers to noise, air pollutants, vibrations, light, and electromagnetic fields. The Federal Immission Control Act (BImSchG) forms the most important legal basis and regulates both the operation of emission-generating facilities and the protection rights of those affected.

Immission control in building and planning law

In building law, immission control plays a central role in urban land-use planning and building permits. Zoning plans require noise protection measures when residential development is planned near industrial areas, railroad tracks, highways, or airports. The TA Lärm (Technical Guidelines for Noise Protection) sets limit values for various building zones (e.g., general residential area: 55 dB(A) during the day, 40 dB(A) at night). Anyone purchasing a property near a noise source should check in advance whether the legal limits are being met.

In addition to noise, air pollutants (particulate matter, nitrogen oxides, odors from agriculture or industry), vibrations caused by rail traffic or construction sites, and light pollution from industrial facilities or streetlights are also relevant forms of pollution. During the planning phase, these are assessed through expert reports that must be prepared prior to the building permit being issued.

Relevance When Buying Real Estate

Pollution levels directly affect property value and quality of life. Noise from roads, railways, or industry can reduce a property’s market value by 5-20%. Buyers should pay attention to the following points during viewings: proximity to major transportation routes (A3, A9, A73 in the Nuremberg metropolitan area), rail lines, industrial zones, or agricultural operations. Noise maps of cities and municipalities (publicly accessible) provide guidance. For commercially used properties, the facility’s approval status under immission control laws must be checked.

We recommend that prospective buyers conduct viewings at different times of day-especially on weekdays between 7 a.m. and 10 p.m. What seems quiet during a Sunday morning viewing may be significantly impacted on weekdays by rush-hour traffic, passing trains, or industrial noise. It is difficult to claim reductions in value due to noise during purchase negotiations after the fact.

Soundproofing in the Building and Passive Protection

In addition to active noise control (noise barriers, minimum noise distances), there is passive soundproofing within the building: soundproof windows, insulation of the building envelope, and a room layout that minimizes noise exposure. For new residential buildings, the requirements of DIN 4109 (Sound Insulation in Building Construction) apply. When purchasing existing properties, it should be verified whether the existing level of sound insulation meets current requirements-a relevant aspect for energy efficiency ratings as well, since older windows often provide poor sound and thermal insulation.

Passive sound insulation cannot completely replace active sound insulation, but it can significantly complement it: Triple-glazed windows reduce external noise by 40-50 dB-a significant contribution to sleep quality and living comfort in noisy locations.

Practical Tip for Property Owners in Nuremberg and Franconia

As an industrial and transportation hub, Nuremberg faces various sources of noise: DB rail lines, the A3, A6, A9, and A73 federal highways, the Port of Nuremberg, and the industrial area in the southwest are major sources of noise. The City of Nuremberg has published noise action plans and noise maps, which are available online.

Anyone buying or selling a property in noise-polluted areas should check the noise map and, if necessary, provide proof of sound insulation. We systematically take noise pollution into account in our pricing and marketing strategy. Especially for properties near railroad tracks or major thoroughfares, we recommend honestly disclosing soundproofing measures in the property listing and actively providing buyers with information about noise protection measures (e.g., soundproof windows, noise barriers).

Frequently Asked Questions

Can I take action against a noisy neighboring business?

Yes, if the noise levels exceed the limits set by the Technical Instructions on Noise (TA Lärm), affected parties have civil defense claims (§ 906 BGB) as well as the option to file a complaint with the noise control authority. In individual cases, a noise impact assessment can be helpful.

Must a seller disclose noise pollution?

Sellers must disclose all material defects that impair the value or usability of the property. Known significant noise pollution (e.g., upcoming road construction, industrial noise) falls under this category. Anyone who conceals this information risks claims for damages or rescission of the purchase contract.

What do noise barriers or walls near a property mean?

Noise barriers indicate that the municipality has identified a noise problem and implemented protective measures. They can significantly reduce noise pollution; however, properties located directly behind the barrier are often well-protected, while those further away are less so. A measurement or calculation on a case-by-case basis is recommended when making a purchase decision.

How do I find the noise map for my property?

The City of Nuremberg and the Bavarian State Office for the Environment (LfU) provide noise maps for major roads, rail lines, and industrial areas online. The Bavarian Environmental Atlas offers an overview of various types of emissions.

Odor Pollution and Agriculture

In the Nuremberg metropolitan region, there is a significant number of properties on the outskirts-particularly in the districts of Roth, Neumarkt i.d.OPf., and Ansbach-that are located near agricultural operations. Odor emissions from livestock facilities, biogas plants, or field cultivation can significantly impair the quality of life. The Odor Emissions Directive (GIRL) specifies the maximum hourly frequency of odors at which a nuisance is still considered acceptable (10% in residential areas). Anyone purchasing property in a rural area should check the immediate surroundings for livestock facilities and biogas plants-both existing ones and those for which an approval process may already be underway. Information is available from the relevant district office.

Electromagnetic Fields and Mobile Communications

Electric and magnetic fields from high-voltage power lines and mobile phone antennas are a sensitive issue in real estate purchases. The limits set by the 26th Federal Immission Control Ordinance (BImSchV) protect against proven health effects; according to the current state of scientific knowledge, there is no evidence of a health risk from facilities that comply with these limits. Nevertheless, many buyers perceive proximity to high-voltage power lines or cell towers as a factor that reduces property value-and the market confirms this: properties within direct sight of a high-voltage power line command measurably lower prices. Anyone selling such a property should communicate this transparently in their marketing; anyone buying should weigh whether the corresponding price reduction justifies the limitation.

Noise Protection in Project Developments

For new construction projects in mixed-use or commercial areas, a noise protection report is regularly included in the building permit application documents. The report verifies that the limits set by the Technical Instructions on Noise (TA Lärm) and other regulations are met and that the project does not cause unreasonable emissions or is itself exposed to unreasonable emissions. When redeveloping former commercial areas for residential use-in Nuremberg, for example, as part of conversion projects-emission control is often the central planning-law hurdle. The conflict between encroaching residential use and existing commercial activity is one of the most common causes of delays in zoning plan procedures.

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