Zurich Introduces New Building Law Changes for 2025–2026

The canton of Zurich is implementing significant updates to its construction and land-use regulations between 2025 and 2026. These changes aim to control urban development, protect green spaces, and improve housing availability across the region.

Stricter rules outside construction zones (RPG 2)

A major change comes from the revised Swiss federal spatial planning law, known as RPG 2, which will take effect from 2026. Under this reform, strict limitations will be imposed on new construction outside designated building zones (Ausserhalb Bauzone). This means that new developments in rural or protected areas will face stronger approval restrictions.

The canton of Zurich is currently adjusting its Planning and Building Law (PBG) to align with these federal requirements.

Zurich city revises zoning regulations (BZO)

Zurich city is also undergoing a full revision of its Building and Zoning Ordinance (BZO). The main objectives include:

• Increasing housing supply
• Expanding affordable housing
• Protecting green and open spaces
• Managing urban densification more effectively

Although the new rules are still being finalized, they are already influencing how building applications are evaluated by authorities.

Cantonal PBG amendments in effect from 2026

In addition, the Zurich cantonal council approved several amendments to the Planning and Building Law (PBG) in early 2026. Some of these changes will officially take effect from August 1, 2026.

These adjustments include technical updates to construction limits, approval procedures, and regulatory definitions that impact how building permits are processed. Overall, Zurich is moving toward a more controlled and structured urban development model. While these reforms aim to support sustainable housing growth, they also introduce stricter requirements for developers and private builders, especially outside official construction zones.