Apply for a preliminary decision (preliminary building inquiry)
Preliminary assessment of a project’s compliance with building codes prior to submitting the actual building application.
How to proceed
- 1
Submit a preliminary building permit application to the building department
Including a site plan, a description of the project, and specific questions.
- 2
Review by the Building Department
The building department reviews only the questions raised, not the overall project.
- 3
Received a preliminary decision
A positive preliminary decision is binding on the building authority for 3 years.
Responsible authority
The authority of your main place of residence is responsible.Find authority →
Fees
Varies by case
Processing time
approx. 4 weeks
Official: max. approx. 1 months
Online application
In person or by post
Common mistakes
- • Too general a request without a specific question
- • Preliminary approval mistaken for a building permit
Common reasons for rejection
- • The project conflicts with the zoning plan
- • Outdoor area (Section 35 of the German Building Code) without a prioritized project
You can usually file an objection against a rejection.
The essentials before applying
Who is eligible?
Homeowners who want to determine whether their project is generally eligible for approval before submitting a costly building permit application.
Income limit
The limit varies by household and region – see the table at the responsible authority or in the application assistant.
Processing time
Nationwide: approx. approx. 4 weeks
Success rate
approx. 75.0 % (estimate)
Most common mistakes
- •Too general a request without a specific question
- •Preliminary approval mistaken for a building permit
Common reasons for rejection
- •The project conflicts with the zoning plan
- •Outdoor area (Section 35 of the German Building Code) without a prioritized project
Alternatives
- Check related services in the application assistant
- Use social counselling before applying
If rejected
File a written objection within 30 days – with reasons why the decision is wrong and any missing evidence.
Questions & Answers
What is the difference between a preliminary decision and a building permit?▼
The preliminary decision clarifies only certain aspects of admissibility, but does not grant the right to begin construction. A full building permit is required for that.