Section 1946. Notice of pendency to be filed and recorded

No final order
  pursuant to section 1944  or  section  1945  shall  be  made  until  the
  petitioners  named in said proceedings, or their attorney, shall file in
  the clerk's office of the county in which such real property is situated
  a notice of the pendency of the said special proceeding, containing  the
  names  of  all the persons claiming to be then owners of the property in
  fee, pursuant to said sheriff's or referee's deed,  the  object  of  the
  proceeding,  together  with  a  brief description of said property. Each
  county clerk with whom such notice is filed must immediately  record  it
  in  the  book kept in his office for recording of notices of pendency of
  an action, and index it to the name of each person claiming to be  owner
  as  aforesaid,  and  said  clerk  shall  be  entitled to receive for his
  services the same fees therefor as are now allowed by  law  for  filing,
  recording and indexing a notice of pendency of action.