Tree protection by-law defeats building wishes – the VGH Munich reinforces the rights of environmental organisations

Conflict line between building law, nature conservation through a tree protection by-law and the Environmental Remedies Act

The decision of the VGH Munich of 13.11.2025 – 2 CS 25.1851 concerns a typical, but legally highly complex constellation: The collision between rear internal courtyard development, municipal tree protection by-law, right of action for environmental organisations and the integration requirements of § 34 BauGB.

Legal character of a tree protection by-law

In doing so, the VGH not only clarified the material requirements that apply, but also made clear that municipal by-laws – in particular tree protection by-laws – constitute "state law" within the meaning of the Environmental Remedies Act. This strengthens the position of recognised nature conservation organisations considerably and marks a clear development of the law, as the VGH explicitly abandons its previous line.

The decision is equally significant for municipalities, project developers and environmental organisations: It provides clear standards for the integration of building depth, outlines the scope of the right to bring proceedings and clearly delimits the binding effect of preliminary notices. Of course, it remains to be seen whether this line of case law will also be supported by the BVerwG in future.

What it was specifically about: Rear development with consequences for the tree population

The defendant intended to erect three townhouses in the rear area of a site within the inner city. With the building permit of 7 March 2025, the tree protection by-law required felling permit was also granted.

A recognised nature conservation organisation then filed a lawsuit and requested the ordering of a stay of execution. The administrative court rejected this request because it denied the organisation the right to bring proceedings under § 2 Abs. 1 UmwRG.

The VGH Munich reversed this decision and ordered the stay of execution of the lawsuit – a clear signal in favour of the nature conservation organisation.

Right to bring proceedings and environmental relevance: Broad interpretation of the UmwRG in favour of environmental organisations

At the heart of the decision is the question of whether a nature conservation organisation can rely on municipal by-law – specifically a municipal tree protection by-law – within the framework of the UmwRG.

The VGH affirms this clearly. It establishes that the building permit with integrated felling permit constitutes an environmental decision within the meaning of § 1 Abs. 1 Nr. 5 UmwRG. What is decisive is that the tree protection by-law, according to its purpose, is expressly concerned with the protection of the natural environment, the safeguarding of the functional capacity of environmental components and the prevention of harmful environmental impacts serves.

Thus, the tree protection regulation is a provision of environmental law within the meaning of § 1 Abs. 4 UmwRG.

Municipal bylaws as "state law" – departure from the previous VGH line

The VGH makes an important legal turn here:
It aligns itself with the line of the 9th Senate and assesses municipal bylaws as state law. The term "state law" is to be interpreted broadly in federal terms and also encompasses municipal norms as part of the states.

The classification of municipal environmental provisions as state law results from
– the systematic understanding of constitutional law,
– the requirements of the Aarhus Convention,
– the obligation to interpret in conformity with EU law and international law.

The consequence:
Recognized environmental associations can henceforth municipal tree protection decisions regularly have reviewed. This substantially strengthens the rights of associations.

Scope of the challenge authority: incidental review of building code and land use planning law

It was disputed whether the association within the scope of § 2 Abs. 1 Satz 2 UmwRG may also challenge such provisions as are not themselves of environmental nature – for example Art. 68 BayBO or § 34 BauGB.

The VG München – based on case law of the OVG Berlin-Brandenburg – had in the first instance denied this.

The VGH explicitly disagrees:

If an environmental provision (here: § 5 BaumSchV) presupposes a prior building law entitlement, its review is mandatorily part of the examination programme of the environmental provision.

It would be artificial to separate the building law entitlements, since the felling permit may only be granted if a claim to building permit approval exists. This claim was disputed.

Thus the association may also challenge that the project is inadmissible under planning law. This is a clear step in favour of effective legal protection.

No insertion under § 34 BauGB: standards for building depth newly refined

The VGH examines in detail whether the rear building fits into the "immediate surroundings" with regard to the buildable plot area.

In doing so, several core criteria are emphasized:

Limitation of the relevant surroundings to properties of the same access street

Only those plots should be standard-setting which – like the building plot – are accessed by the same street. Plots in the block interior or opposite street fronts are generally not relevant.

Ancillary buildings in the block interior have no characteristic force

The existing garage and ancillary facilities in the vicinity are
– neither in their height,
– nor in their use,
– nor in their urban planning impact
suitable to justify a rear building with main buildings.

No urban planning tension-free exception

Even an exception based on the idea of urban planning relief the Higher Regional Court (VGH) rejected. The planned townhouses would have had exemplary effect, which could lead to further deep infill development – a classic argument against insertion.

Result:
The rear infill development does not fit not into the character of the immediate surroundings – and a building permit could not have been issued for this reason alone.

Preliminary notice without binding effect: Clear limits under Art. 71 BayBO

Although a preliminary notice from 2023 existed, the Higher Regional Court (VGH) denied binding effect with regard to the question of the developable site area.

Reasoning:
– Binding is only what in the preliminary notice was positively requested and decided upon.
– The developable site area was not the subject of the advance inquiry.

Thus the building supervisory authority must examine this question in full again – and the neighbour or the environmental association may challenge it in court once more.

Conclusion and practical recommendation

The ruling of the Higher Regional Court (VGH) Munich is a landmark decision for the interplay of building law, environmental law and municipal bylaws. It strengthens the rights of environmental associations, clarifies the insertion standards of § 34 BauGB and redefines the role of municipal bylaws in the scope of application of the UmwRG.

For developers this means:
Rear courtyard infill developments are legally risky and must be planned with particular care regarding building depth and the requirement of fitting in.

For municipalities the decision means:
Tree protection bylaws unfold genuine substantive legal density of examination and can decisively shape court proceedings.

For environmental associations it means:
Association lawsuits can in future be supported much more strongly by municipal environmental regulations, namely also by tree protection bylaws.

If you are planning a construction project, need to apply a municipal bylaw or as an environmental association wish to examine the options for legal protection, consult the experts of AVANTCORE Rechtsanwälte in Stuttgart, who will be happy to advise you comprehensively – legally precise, deeply grounded in administrative law and with a strategic eye to procedural risks.