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Preferred Building Services is a full service janitorial company that emphasizes impeccable detail in cleaning with unmatched customer service.

Preferred Building Services Questions

The Preferred Building Services annual revenue was $4 million in 2026.

Preferred Building Services is based in South San Francisco, California.

The NAICS codes for Preferred Building Services are [561, 56].

The SIC codes for Preferred Building Services are [73, 734].

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