Single-family homes, multi-family residences, commercial buildings, and a grocery store surround the 1,300 m² plot on the edge of Erftstadt-Lechenich, creating a highly diverse built environment—a dynamic interplay of residential and commercial structures, flat roofs and varied pitched roof forms, single and multi-storey buildings. Tasked with designing a 17-unit residential complex, the Cologne-based architecture firm Wilkin & Hanrath Bauphasen responded to this visual fragmentation with a monolithic approach: a distinctive landmark that serves as a clear point of reference amid the surrounding urban complexity.

The site had no formal development plan, so the design needed to follow Section 34 of the German Building Code, aligning with neighboring structures—with just one constraint: maximum eaves and ridge heights based on a reference building with a pitched roof. The architects embraced this constraint, creating a three-storey building with a contemporary hipped roof facing the street that transitions into a slightly narrower volume with stepped terraces toward the rear. Both roof and façade are clad in identical anodized metal diamond shingles that shift tone with the play of light and shadow, giving the building its striking monolithic presence. Expansive windows emphasize the structure's horizontal sweep, while projecting terraces with delicate railings and recessed loggias introduce sculptural depth. Most dramatic is the crystalline roof composition at the rear, where one of two penthouses clusters around a central skylit atrium with dormers adding visual complexity—a sharp contrast to the composed street elevation. Every apartment is generously proportioned and functionally designed as a custom composition; there are no standard types. Single residents, young families, and seniors find high-quality, individually configured units complete with underground parking and bicycle storage. Living spaces and terraces flow continuously through floor-to-ceiling windows. The communal stairwell received special attention: rather than austere minimalism, it's an airy architectural volume in exposed concrete with vertical glazing and multi-storey air voids—a welcoming gathering space for all residents.

www.bauphasen.de

Photography Credits:

Constantin Meyer
www.constantin-meyer.de

(Featured in CUBE Cologne Bonn 04|22)