Oswald Building Services

  • Janitorial Services
35 East Uwchlan Avenue
Suite 306
Exton, PA 19341
(484) 879-6422
(484) 879-6432 (fax)
  • About

    At OBS our mission is to provide janitorial services for our clients efficiently, effectively, and professionally.

    HONESTY, INTEGRITY, and FAIRNESS in everything we do!

  • Whom to Contact

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