![Legal law concept statue of Lady Justice with scales of justice](https://www.rajjahn.de/wp-content/uploads/fachbereiche_800_600_1.jpg)
SPECIALISED AREAS
Since our firm's aim is to provide the best possible advice and to represent our clients in and out of court, it is inevitable that we will specialise in certain areas of law.
The main focus of our law firm is on tenancy and residential property law, traffic law, contract law and civil law.
![Homeowner getting key to new house flat from realtor in modern office. Happy real estate owner making purchase deal, family mortgage investment and buying property concept, close up view of hands](https://www.rajjahn.de/wp-content/uploads/mietrecht_800_600.jpg)
RENTAL LAW
Residential and commercial tenancy law
- Establishment of the tenancy
- Claims in the current tenancy (rectification of defects, reduction rights, warranty claims, outstanding payment claims, subletting, ...)
- Rent increases and utility bills
- Law on security deposits (in particular rental deposits)
- Termination of the tenancy (in particular termination due to breach of duty, rent arrears or personal use, tenancy cancellation agreement, ...)
- Claims after termination of the tenancy (representation in actions for eviction, damages and compensation for use, claims arising from rental security deposits, protection against eviction, ...)
- Preservation of evidence
- Interim injunctions
![Real estate](https://www.rajjahn.de/wp-content/uploads/wohnungseigentumsrecht_800_600.jpg)
CONDOMINIUM LAW
- Formation of condominium or part-ownership (declaration of division)
- Disposal of flat or part-ownership
- Tasks, duties and position of the WEG administrator
- Homeowners' meeting (agenda, defects in resolutions, contesting resolutions, nullity of resolutions, authority to pass resolutions, ...)
- House money claims
- Rights and obligations of the condominium owners in the internal relationship
![Traffic jam on the motorway](https://www.rajjahn.de/wp-content/uploads/verkehrsrecht_800_600_1.jpg)
TRAFFIC LAW
- Law of sales contracts (sales contract, warranty rights, ...)
- Traffic liability law (claims settlement after traffic accidents, liability for property damage and personal injury, ...)
- Criminal traffic law and the law governing administrative offences
- Statement of operating costs
- Driving licence law
- Traffic insurance law (motor insurance law, comprehensive insurance law, ...)
![The judge hammer lies on table in](https://www.rajjahn.de/wp-content/uploads/zivilrecht_800_600.jpg)
CIVIL LAW
Alongside criminal law, civil law is one of the largest areas of law in Germany. It concerns the diverse legal relationships between citizens and legal entities (companies, associations, etc.). Below we have summarised our main areas of expertise in Civil law put together.
- Law of Obligations
- General civil law
![Conclusion of contract with notary seal](https://www.rajjahn.de/wp-content/uploads/vertragsrecht_800_600.jpg)
CONTRACTUAL LAW
The most frequently concluded contract is the purchase contract and for many clients the most important purchase contract in life is the purchase of a plot of land, a house or a property, which must be notarised because of its importance.
This makes it all the more important for clients to involve a lawyer when concluding purchase contracts in order to avoid unpleasant surprises later on. The same applies to post-contractual disputes with the contractual partner.
MEMBERSHIPS & CERTIFICATES
![specialist_lawyer_tenancy_law](https://www.rajjahn.de/wp-content/uploads/fachanwalt_mietrecht.jpg)
![graduate_specialist_lawyer_traffic_law](https://www.rajjahn.de/wp-content/uploads/absolvent_fachanwalt_verkehrsrecht.jpg)
![deutscher_anwaltverein_600_300 Jens Jahn, your lawyer for tenancy law, traffic law, civil law and contract law in Bonn, Cologne, Bad Honnef and Königswinter](https://www.rajjahn.de/wp-content/uploads/deutscher_anwaltverein_600_300.jpg)
![forum_junge_anwaltschaft_600_300 Jens Jahn, your lawyer for tenancy law, traffic law, civil law and contract law in Bonn, Cologne, Bad Honnef and Königswinter](https://www.rajjahn.de/wp-content/uploads/forum_junge_anwaltschaft_600_300.jpg)
![mitgleidschaft_600_300 Jens Jahn, your lawyer for tenancy law, traffic law, civil law and contract law in Bonn, Cologne, Bad Honnef and Königswinter](https://www.rajjahn.de/wp-content/uploads/mitgleidschaft_600_300.jpg)
![bonner_anwaltverein_600_300 Jens Jahn, your lawyer for tenancy law, traffic law, civil law and contract law in Bonn, Cologne, Bad Honnef and Königswinter](https://www.rajjahn.de/wp-content/uploads/bonner_anwaltverein_600_300.jpg)
COUNSELLING FORMATS
Our service offering is based on direct communication with our clients and partners.
We offer these services via different communication channels:
Online format | Offline format
![formats_1920 Jens Jahn, your lawyer for tenancy law, traffic law, civil law and contract law in Bonn, Cologne, Bad Honnef and Königswinter](https://www.rajjahn.de/wp-content/uploads/formate_1920-1.jpg)
![ra_icon_freundlichkeit400_400 Jens Jahn, your lawyer for tenancy law, traffic law, civil law and contract law in Bonn, Cologne, Bad Honnef and Königswinter](https://www.rajjahn.de/wp-content/uploads/ra_icon_freundlichkeit400_400-150x150.png)
Friendliness
We take you and your concerns seriously and are appreciative in our dealings with each other
![ra_icon_zuverlaessigkeit_400_400 Jens Jahn, your lawyer for tenancy law, traffic law, civil law and contract law in Bonn, Cologne, Bad Honnef and Königswinter](https://www.rajjahn.de/wp-content/uploads/ra_icon_zuverlaessigkeit_400_400-150x150.png)
Professionalism
We follow up every request with due professionalism, no matter from which area
![ra_icon_professionalitaet_400_400 Jens Jahn, your lawyer for tenancy law, traffic law, civil law and contract law in Bonn, Cologne, Bad Honnef and Königswinter](https://www.rajjahn.de/wp-content/uploads/ra_icon_professionalitaet_400_400-150x150.png)
Reliability
You can rely on us: we keep our promises, whether verbally or in writing.
![ra_icon_alles_aus_einer_hand_400_400 Jens Jahn, your lawyer for tenancy law, traffic law, civil law and contract law in Bonn, Cologne, Bad Honnef and Königswinter](https://www.rajjahn.de/wp-content/uploads/ra_icon_alles_aus_einer_hand_400_400-150x150.png)
Everything from one source
You have only one contact person: we accompany you from the beginning to the end of your request