Gemeinnützige Baugenossenschaft „Grundstein“
Since it was founded in 1921, this association has built and maintained inexpensive apartments in Cologne. Members enjoy lifelong tenancy. About 900 housing units, all on the left bank of the Rhine.

›› Sülz, Raumerstr. 5, Tel. 9 43 65 80, www.grundstein-koeln.de

Gemeinnützige Wohnungs-Genossenschaft 1897
Tradition-rich association with more than 2,600 apartments including senior citizens’ housing blocks, 28 commercial units and about 700 garages or parking places on the Rhine’s right bank.
›› Dellbrück, Dellbrücker Mauspfad 318, Tel. 68 92 70, www.gwg1897.de

GEWOG – Porzer Wohnungsbaugenossenschaft
This association, which was founded in 1937, has nearly 2,800 housing units in Cologne’s Porz district. GEWOG provides a good, safe and socially responsible supply of housing and offers its members repairs and maintenance, timely modernization and neighborhood improvements.
›› Urbach, Kaiserstr. 11, Tel. 0 22 03/57 05-0, www.gewog-porz.de

Kölner Wohnungsgenossenschaft
After being founded in 1920 by 27 apartment hunters, this cooperative has grown into one of Cologne’s biggest housing associations. It has about 2,700 apartments and 50 commercial units in 15 districts, mainly in the north of the city.
›› Weidenpesch, Schlesischer Platz 1a, Tel. 9 98 78 70, www.koelner-wohnungsgenossenschaft.de

Wohnungsgenossenschaft Köln 1896
Over 2,100 housing units in and around Cologne, mainly in the districts of Deutz, Ehrenfeld and Humboldt-Gremberg.
›› Deutz, Deutzer Freiheit 60, Tel. 1 26 08 00, www.wg1896.de

Wohnung- und Baugenossenschaft „Mieterschutz“
Over 2,100 housing units in and around Cologne, mainly in the districts of Deutz, Ehrenfeld and Humboldt-Gremberg.
›› Neustadt-Süd, Veledastr. 8, Tel. 9 37 00 40, www.mieterschutz-koeln.de