Mainz secures €10M+ to upgrade 44 affordable apartments with climate-friendly tech

Two aging buildings in Mombach will soon slash energy costs—and rents. How Mainz is fighting climate change while protecting social housing.

, and Administrator

2025 November 30 . 11:16 PM

1 min read

This is the picture of a place where we have some buildings to which there are some windows, green... — This is the picture of a place where we have some buildings to which there are some windows, green color clothes and also we can see some shops, boards and some trees and plants around.

Mainz secures €10M+ to upgrade 44 affordable apartments with climate-friendly tech

Wohnbau Mainz GmbH has received multi-million-euro funding to upgrade 44 affordable apartments in the city. The project will modernise two residential buildings in the Mombach district, making them more energy-efficient. Officials have praised the initiative for combining climate protection with social housing needs.

The funding comes from the Investment and Structural Bank of Rhineland-Palatinate (ISB), backed by low-interest loans and repayment subsidies from state and federal governments. These subsidies will help set rents at €8.90 per square metre for the next 20 to 25 years. The apartments will remain under rent and occupancy controls to ensure they stay affordable for middle-income households.

The buildings at Am Stollhenn will be upgraded to meet the Efficiency House 70 standard, cutting energy use by around 30%. Managing directors Roman Becker and Franz Ringhoffer of Wohnbau Mainz highlighted the project’s dual focus on social responsibility and climate-friendly housing.

Mayor Nino Haase (independent) welcomed the scheme, calling it a key step in protecting the climate while preserving affordable housing. Christian Kanka (SPD), district councillor for Mombach, added that tenants would directly benefit from the improvements. Minister Doris Ahnen (SPD) also commended Wohnbau Mainz for setting an example in urban housing quality and sustainability.

The upgrades will reduce energy consumption in the buildings by nearly a third. With controlled rents and long-term affordability measures, the project aims to support middle-income residents. State and local officials have recognised its role in advancing climate goals and housing stability in Mainz.