CHAPTER II- Ownership, Heritability and Transferability of Apartments, Section 11- Certain works prohibited

No apartment owner shall do any work which would-

  1. Harm the soundness or safety of the property
  2. Reduce its value thereof
  3. Impair any easement to it
  4. Add any structure or
  5. Excavate any additional basement or cellar without first obtaining the consent of all the other apartment owners.