Landesbetrieb Geoinformation und Vermessung (LGV)

Automated information from the purchase price collection (AAK)

The automated information from the purchase price collection - AAK provides experts with purchase prices for single- and two-family houses and condominiums via an online service. Use requires separate activation.

Detailed description

The expert committee for property values maintains a collection of purchase prices within its area of responsibility.



Information can be provided upon legitimate request. If you meet certain requirements as an expert and can provide proof thereof, you can use the online service AAK (Automated Information from the Purchase Price Database) and have yourself activated for it.



Only purchase prices for single-family/two-family houses and condominiums are available via the online service.

 

Information

Prerequisites

To use the online service you need a separate activation. The following is absolutely necessary:

  • Your certificate of appointment (PDF) as a publicly appointed and sworn expert for the determination of property values or
  • Your certificate (PDF) in accordance with DIN EN ISO/IEC 17024 for proof of expertise as an expert for the property valuation of a certification body accredited by the Deutsche Akkreditierungsstelle GmbH. (https://www.dakks.de/de/akkreditierte-stellen-suche.html)

Documents required

Proof of identity is required for activation.



When providing information, data on the property to be valued, whose market value is to be determined, is requested in order to specify the legitimate interest.

Please note

The entire collection of purchase prices is not available via the online service for providing purchase cases.


The following applies:

  • Sales only (no forced auctions)
  • Only independently usable objects (no mixed uses or packages)
  • No unusual or personal circumstances
  • No special features in the pricing structure (installments, annuities, additional services)
  • No other value-influencing circumstances (for example: easements)
  • No leasehold rights
  • Living space and year of construction are known

The information includes up to 50 individual georeferenced data records in an Excel spreadsheet.


The data provided may only be used for the purpose for which it was given. It may only be made accessible to third parties in a form that does not allow for direct attribution to the property in question.

Deadlines

The activation of the service is limited to the validity period of the certificate mentioned (see requirements), but can be extended.

Procedure

Process for activating the service:

  • Use of the service requires a Business service account on the Hamburg Service Portal.
  • This Business service account and the email addresses of the authorized persons must be activated by the office of the expert committee.
  • To do so, send the completed application form for admission by email to gutachterausschuss@gv.hamburg.de.

Activation is only possible for certain experts (see requirements). Proof of fulfillment of the requirements must be provided.



Process of obtaining information after activation:

  1. Registration
  2. selection (object type, various filter settings)
  3. Output: Number of hits
  4. If necessary, change the selection, then complete the order and payment
  5. Result is delivered to the mailbox of the service account

Processing time

The processing time depends on the user.

Fees

The basis is the fee schedule for official surveying and the appraisal committee for property values in Hamburg (GebOVerm) in the currently valid version

Legal remedies

No.

Legal basis

Section 195 of the German Building Code (BauGB)


https://www.gesetze-im-internet.de/bbaug/__195.html




Section 197 of the German Building Code (BauGB)


https://www.gesetze-im-internet.de/bbaug/__197.html




Ordinance on the Appraisal Committee for Property Values (GutVO) - hamburg.de


https://www.landesrecht-hamburg.de/bsha/document/jlr-GAusschVHA2009rahmen

Address and contact information

Landesbetrieb Geoinformation und Vermessung (LGV)

Abteilung W 1 Marktinformation

Mon-Wed 8 a.m.-1 p.m., Thu 8 a.m.-4 p.m., Fri 8 a.m.-1 p.m.

We have a limited number of customer parking spaces. To reserve a parking space, please contact our receptionist by e-mail at zugang@bsw.hamburg.de or by telephone on +49 40 428 40 - 50 50. Our working hours are: Monday to Thursday from 8:00 a.m. to 3:15 p.m , Friday from 8 a.m. to 1:30 p.m.

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Keywords: Land prices Real estate prices Purchase prices of real estate Comparative prices for real estate

Last updated: 13.10.2026