Where no qualifying binding development plan governs the issue, section 34 BauGB can be central to development within an established built-up area.
Archive article, reviewed and updated on 12 November 2026. The original publication date is retained.
Identify the relevant surroundings
The statutory test includes the type and scale of use, building method and the part of the plot to be developed. The relevant surroundings are determined by their planning influence, not simply by drawing an arbitrary radius around the site.
Check the other requirements
Servicing and access, healthy living and working conditions and the statutory qualifications must also be considered. One unusual building nearby does not automatically establish the permitted scale for a new project. The current version of the statute should be checked for applicable special provisions.
Four practical examples
Illustrative scenarios: the appropriate steps depend on the contract, evidence and applicable law. These are not reports of client matters.
An extra storey
Compare the proposed scale with the relevant built form, not just the tallest building visible.
A rear plot
Examine the pattern of development and access before assuming infill is permissible.
A commercial use
Assess its compatibility with the surrounding area and applicable use rules.
A corner site
Consider which neighbouring development actually influences the plot.
Further guidance
Legal framework & further reading
Reviewed: 12 November 2026. Statutory references are to German law unless stated otherwise.