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Aderhold Notaries

Impartial, discreet, modern, secure.

What we do

The notaries—all based in Dortmund—Jürgen Schemann, Dr. Thorsten Siepe, Dr. Matthias Wiese, Dr. Alexander Bardenz, and Catherine Westerwelle have many years of experience in drafting notarial contracts, providing support, and handling all areas of preventive legal services with precision.

This includes, in particular, the drafting of contracts in all areas of corporate and real estate law, corporate succession, company sales, corporate restructuring, will drafting and anticipated succession (gifts, lifetime asset transfers to the next generation), the drafting of matrimonial agreements (marriage contracts and divorce agreements) and emergency provisions (powers of attorney and living wills).

The focus is on people

The notary always focuses on the individual. Understanding your concerns, worries, and needs is just as important as extreme accuracy and in-depth knowledge.

Notaries are responsible for notarizing all kinds of documents and certifying signatures, hand signals, and copies. For a large number of legal transactions, notarization by a notary is even required by law. This is always the case where the legislator considers the assistance of a notary to be necessary due to the far-reaching personal and economic consequences for the parties involved.

Notaries draw up enforceable deeds. These deeds, like final court judgments declared enforceable, are used for enforcement. Arbitration awards are also only enforceable if they have been declared enforceable by a state court or a notary.

In addition, they conduct lotteries and draws and draw up inventories of assets. However, they can also conduct voluntary auctions and mediate in estate and community property disputes. In addition, notaries can advise and represent clients in matters of voluntary jurisdiction, act as arbitrators, administer oaths, issue certificates, and hold securities and valuables in safekeeping.

Preventive administration of justice

Notaries are active in the field of preventive administration of justice. Like judges, they are appointed by the state, independent, impartial, and hold public office. In contrast to contentious justice, however, notaries are concerned with dispute avoidance and secure contract drafting in advance. Notaries are available to you and your contractual partners as confidential advisors in complex and consequential legal matters.

Highest quality

Notaries combine the highest legal standards with a professional ethic characterized by neutrality and the dignity of public office. Only particularly qualified and experienced fully qualified lawyers are appointed as notaries, whose deeds ensure legal certainty, legal peace, and protection for the inexperienced.

Equal access

The sovereign nature of notarial activities not only guarantees first-class preventive administration of justice, but also equal access to legal advice. The Court and Notary Fees Act (GNotKG) provides for a particularly social fee system: everyone can afford a notary because their costs are based on the value of the transaction. The consultation preceding the notarization, including the preparation of drafts, is covered by the notarization fee. It does not matter how much time the notary has taken.

Notarial fields of activity

Online forms

We want to handle your request quickly and in compliance with legal requirements. To do this, we need some information from you. The best way to provide this is by using our forms. This ensures that we receive all the necessary data. We will be happy to clarify any open questions by phone or in a meeting.

Go to the online form section

Aderhold –
Safe on all roads

Notaries stand for independence, neutrality, and the highest quality standards in the structuring of your legal needs.

As an independent holder of public office, notaries are vested with sovereign powers for preventive administration of justice in Germany. Notaries exercise preventive legal control and draw up deeds that are binding evidence in court and directly enforceable.

The notaries—all based in Dortmund—Jürgen Schemann, Dr. Thorsten Siepe, Dr. Matthias Wiese, Dr. Alexander Bardenz, and Catherine Westerwelle have many years of experience in notarial contract drafting, support, and precise handling of all areas of preventive legal administration.

This includes, in particular, the drafting of contracts in all areas of corporate and real estate law, corporate succession, company sales, corporate restructuring, will drafting and anticipated succession (gifts, lifetime asset transfers to the next generation), the drafting of matrimonial agreements (marriage contracts and divorce agreements) and emergency provisions (powers of attorney and living wills).

Further information on the individual areas of notarial practice, the costs of notarial services, and information on current legal developments and structuring recommendations can be found here:

About our work –
Notaries

Impartial. Notaries are available to you and your contractual partners as impartial advisors in complex and consequential legal matters.

Modern.
Notaries play a pioneering role in electronic legal transactions. Qualified electronic signatures with notarial attributes now enjoy the same level of trust as notarial seals with the official's handwritten signature.

Discreet. Notaries must maintain confidentiality towards everyone regarding all matters that come to their knowledge in the course of their professional activities and must also impose this confidentiality on their employees.

Secure. The notarial deed – with letter and seal – is the epitome of legal certainty. The trust placed in it in legal transactions has one source: the diligence of notaries.

Aderhold Notaries
(official seat: Dortmund)

Contact person


Do you have questions about notarization, the preparation or execution of a contract, or would you like to arrange a personal appointment?

Our staff, along with our notaries, will be happy to answer your questions. Appointments for meetings and notarization can be arranged flexibly to suit your needs.

Ms. Daniela Lukaschik
Tel. +49 (0)231 42777-258
Email: daniela.lukaschik@aderhold.de

Ms. Sabrina Kähler
Tel. +49 (0)231 42777-253
Email: sabrina.kaehler@aderhold.de

Ms. Susanne Birkhahn
Tel. +49 (0)231 42777-254
Email: susanne.birkhahn@aderhold.de

Ms. Anja Bartolomey
Tel. +49 (0)231 42777-225
Email: anja.bartolomey@aderhold.de

Ms. Diana Heißler
Tel. +49 (0)231 42777-252
Email: diana.heissler@aderhold.de

Ms. Lena Jungjohann
Tel. +49 (0)231 42777-351
Email: lena.jungjohann@aderhold.de

Aderhold locations

Across national borders.

Dortmund

Dortmund

Westfalentower
Westfalendamm 87
44141 Dortmund

Contact

Do you require comprehensive notarial advice?
Write to us. We will be happy to advise you.

Information on the GDPR for notaries (as of November 20, 2025)