Funding for the Implementation of Sponge City Measures on Private Land (Sponge City Funding Program)

This funding program in Bremen supports private landowners as well as companies in implementing green roofs and facades, surface de-sealing, and systems for rainwater and greywater use. The goal is to mitigate urban heat islands and optimize rainwater management by storing precipitation, generating evaporative cooling, and increasing infiltration areas. At the same time, the measures promote the economical use of drinking water by utilizing rainwater and greywater for irrigation during dry periods. The resulting “blue-green infrastructure” delays heavy rain runoff, improves the microclimate, and contributes to environmental and nature conservation. Additionally, greening roofs and facades enhances thermal insulation, thereby increasing the energy efficiency of buildings and further supporting climate protection.

Eligible for funding are private property owners in Bremen as well as companies planning sponge city measures. Proof of ownership and professional implementation of the individual modules, as defined in the funding guidelines of the Senator for Environment, Climate and Science, are prerequisites. Funded measures include green roofing, facade greening, de-sealing of paved areas, and rainwater and greywater utilization. Applications can be submitted continuously, allowing flexible integration into construction and renovation projects. The grant model covers a significant portion of the investment costs, thereby supporting an efficient and resource-conserving transformation of private areas. This funding instrument contributes to adapting Bremen to climate change in the long term and sustainably improving the quality of life in urban spaces.