Berlin-based Deutsche Sanierungsberatung raises over €10 million to accelerate climate-neutral home renovations
Berlin-based ClimateTech startup Deutsche Sanierungsberatung (dsb) has secured over €10 million in Series A funding to accelerate climate-neutral home renovations in Germany.
Deutsche Sanierungsberatung (dsb), a Berlin-based ClimateTech startup focused on making residential homes climate-neutral, has closed a Series A round of over €10 million. The funds will be used to launch a proprietary electricity tariff, enter the B2B market, and support further growth.
The round was led by Simon Capital and VERBUND X Ventures, with existing investors IBB Ventures, Vireo Ventures, and Atlantic Food Labs also participating. In February 2025, the company secured €3.6 million in a seed round.
According to dsb, building operations account for roughly 30% of Germany's CO2 emissions—about 112 million tons per year—mainly from heating with fossil gas and oil. Residential buildings are thus a major lever for the energy transition, but the renovation process remains challenging for many homeowners.
Dsb addresses this by combining independent energy consulting and subsidy services with a network of vetted skilled trades businesses on a digital platform. Homeowners have a single point of contact for their entire renovation. Certified energy consultants digitally collect all relevant building data on site, creating a digital twin of the house that forms the basis for an individual renovation roadmap (iSFP). This roadmap prioritizes measures over several years and secures additional subsidy bonuses. Dsb reviews all funding options through KfW and BAFA and handles the application process through to disbursement.
Since its founding in 2024, dsb has tripled in size and now serves over 10,000 private customers. For 2026, the company forecasts revenue exceeding €15 million. The co-founder and CFO noted that while capital is mainly flowing into AI, their round shows that strong growth and a working business model can still attract investors, even outside the hype.
The company plans to use the capital to continue expanding its platform and its network of 300 local skilled trades businesses. Alongside launching a proprietary electricity tariff, dsb also intends to enter the B2B market.
