Building project; application for extension of a building permit or preliminary decision

You can have your building permit, partial building permit or preliminary decision extended if necessary.

Building permits, partial building permits and preliminary decisions are only valid for a certain period of time.

If you are unable to start your approved project within 4 years, you can apply for an extension. If you do not receive planning permission within 4 years of receiving a preliminary building permit for the same project, you can apply for an extension of the preliminary building permit.

The extension period is up to four years, multiple extensions are possible.

An extension of the period of validity of a building permit or partial building permit is to be assessed on the basis of the same requirements as the initial granting. The project must therefore still be subject to approval at the time of the lower building supervisory authority's decision on the extension. In addition, the project must comply with public law regulations, which must be examined in the approval procedure.

This applies accordingly to the extension of the preliminary decision.

If the legal situation changes after the approval or preliminary decision has been issued, the extension must be checked against the new legal situation.

You can appeal to the administrative court against a decision by the lower building supervisory authority regarding the extension.

Written submission

• Submit a written application to the responsible lower building supervisory authority to extend the validity of your building permit, partial building permit or preliminary decision.
• A verbal application is not possible.
• The lower building supervisory authority will then decide on your application and inform you of the result.
• If the lower building supervisory authority only decides on your application after the expiry of the period of validity, your building permit, partial building permit or preliminary decision will become temporarily invalid. These will then only be reinstated once the lower building supervisory authority has made a positive decision.

Digital submission

Digital submission of applications for extensions is not yet possible throughout Bavaria. When selecting a location, the link to the online procedure is displayed, if it is already offered.

• The application for extension can be submitted digitally to the lower building supervisory authority using the online assistant.
• Attachments are uploaded to the online assistant in electronic form (files in PDF format).
• The signatures are replaced by authentication using the "BayernID" user account or "My company account".

Your building permit or partial building permit will expire if you have not started work on the project within 4 years of it being granted or if you have interrupted construction work for 4 years. Your application for renewal must be received by the responsible lower building supervisory authority before the expiry date. Receipt by the municipality is not sufficient to meet the deadline.

Your preliminary decision is valid for 4 years. Your application for renewal must be received by the responsible lower building supervisory authority before the expiry of the period of validity. Receipt by the municipality is not sufficient to meet the deadline.

The processing time depends on the scope and complexity of the project and the current workload of the lower building supervisory authority.

Apply for an extension in good time if it is foreseeable that the period of validity will not be sufficient.