The database contains efficient houses from all over Germany.

dena created the efficient house database to showcase successful buildings. It allows investors to view energy-efficient buildings

and obtain inspiration for their own construction project. Experts can draw attention to themselves with their efficient houses.

Statistics & facts

Appr 270
efficient houses
are already registered in Bavaria – placing the state at the top of the database ranking.
Appr 5 %
of energy-efficient refurbishments
are listed in the examples.
Appr 1300
houses are currently listed
in the database, and the numbers are growing.
60 %
of the listed buildings
are registered as energy-efficient refurbishments.
Building and refurbishment

Database showing model efficient houses

They are the “ambassadors of the energy transition”: homeowners who set a good example. Their projects can also be found in dena’s Efficient House database.

A study by dena has revealed that 94 percent of people living in an efficient house could never imagine moving anywhere else. But how is the efficient house standard achieved, where are these houses located, and what do they look like? Over 1,000 accomplished examples of energy-efficient building and refurbishment are just a few clicks away in the dena database: homeowners and future investors can visit the website at www.effizienzhausdatenbank.de to learn from the experience of others in matters of energy efficiency – and then take action. The database is also a reference portal for experts: architects, structural engineers  and skilled trades firms have the opportunity to present their efficient houses to a wider audience and therefore to potential customers.

Good examples: the way to a efficient house.

How can my home become an efficient house? The building profiles in the database provide answers to this question. Each house is shown on its own page together with photos and facts. Among other things, visitors will find a before/after comparison of energy consumption, as well as information on the materials used and the heating system. The expert’s name is also listed in many of the house profiles.

Efficient houses in the neighbourhood.

Visitors can use the post code search feature to locate houses close by – new builds, refurbishment projects and even heritage-listed buildings.  Non-residential properties can also be registered in the database. The post code feature is not just of interest to private investors. It can also inspire municipalities and public institutions as they look to complete their new build or refurbishment projects. Politicians and association members can find out how many efficient houses already exist in their local community. The service is also a good source for journalists and associations conducting research, as it provides helpful arguments and a wealth of information,

and the database will continue growing.

Entries are free, and they can only be published with the homeowner’s consent. Naturally, the buildings must satisfy efficient house standards in order to be accepted. Additional information is available at effizienhausdatenbank.de.

Projects on the topic

Efficient House Database

dena created the efficient house database to showcase successful buildings. It allows owners to view energy-efficient buildings and obtain inspiration for their own construction project. Experts can draw attention to themselves with their efficient houses.

Overview

  • Project start: 2009
  • Around 1,300 registered efficient houses: 60 percent are refurbishments; 40 percent new buildings
  • Two thirds of the buildings correspond to  efficient house class 70 or better

Efficient House Pilot Project

The “Efficient House" pilot project by dena has focused on the energy-saving refurbishment of residential buildings since 2003, and of municipal buildings since 2007, with a special focus on schools, to create high standards of energy efficiency.

Overview

  • Project duration: 2003 - 2014
  • energy-saving refurbishment and assessment of over 400 residential and non-residential buildings in Germany
  • over 300,000 m2 of living space refurbished
  • CO2- annual reduction of over 3.7 million tonnes in residential buildings
  • average reduction in energy consumption of 80 percent during the pilot projects
  • 98 of the investors recommend energy-efficient refurbishment