Projects like La Finca and other new villas in nearby areas have brought A-cero closer to Spain's architectural establishment.

WSJ: A-cero's Modern Planes in Spain

La Finca's security-conscious community, where houses come with servants' wings, is a new idea in Spain, and local real-estate professionals regard it as a great success.

WSJ: A-cero's Modern Planes in Spain

"I moved to La Finca two years ago, " says the 36-year-old, who relocated from a smaller home nearby with her husband, the general manager of a technology company.

WSJ: A-cero's Modern Planes in Spain

Instead, the studio chooses to work closely with private developers, like Procisa, their collaborator on La Finca and their neighbor in the development's industrial park, where A-cero-designed glass-cube offices are set off by external stairwells of swirling concrete.

WSJ: A-cero's Modern Planes in Spain