Section 17-151. Lien on premises

a. There shall be filed in the office of
  the department a record of all work caused to  be  performed  by  or  on
  behalf  of  the  department  in  executing  any  order  of  the board or
  department.  Such records shall be kept on a building by building  basis
  and  shall  be  accessible  to  the public during business hours. Within
  thirty days after the issuance of a purchase or work order to cause such
  work to be done, entry of such order shall be made on the records of the
  department. Such entry shall constitute notice to all parties.
    b. All expenses incurred by or on behalf of the  department  for  such
  work,  pursuant  to this title or any other applicable provision of law,
  shall constitute a lien upon the land and buildings upon or  in  respect
  to  which,  or either of which, the work required by such order has been
  done, or expenses incurred, when the  amount  thereof  shall  have  been
  definitely  computed as a statement of account by the department and the
  department shall cause to be filed in the office of the  city  collector
  an entry of the account stated in the book in which such charges against
  the premises are to be entered. Such lien shall have a priority over all
  other   liens  and  encumbrances  except  for  the  lien  of  taxes  and
  assessments. However, no lien created pursuant to this  title  shall  be
  enforced  against  a  subsequent purchaser in good faith or mortgagee in
  good faith unless the requirements of subdivision a of this section  are
  satisfied;  this  limitation  shall only apply to transactions occurring
  after the  date  such  record  should  have  been  entered  pursuant  to
  subdivision a and before the date such entry was made.
    c.  A  notice  thereof,  stating  the amount due and the nature of the
  charge, shall be mailed by the city collector, within  five  days  after
  such  entry,  to the last known address of the person whose name appears
  on the records in the office of the city collector as being the owner or
  agent or as the person designated by the owner to receive tax bills  or,
  where no name appears, to the premises, addressed to either the owner or
  the agent.
    d.  If  such  charge  is  not paid within thirty days from the date of
  entry, it shall be the duty of the city collector  to  receive  interest
  thereon  at  the  rate  of  interest  applicable  to such property for a
  delinquent tax on real property, to be calculated to the date of payment
  from the date of entry.
    e. Such charge and the interest thereon shall continue  to  be,  until
  paid,  a  lien on the premises. Such lien shall be a tax lien within the
  meaning of sections 11-319 and 11-401 of  the  code  and  may  be  sold,
  enforced or foreclosed in the manner provided in chapters three and four
  of  title  eleven of the code or may be satisfied in accordance with the
  provisions of section thirteen hundred fifty-four of the  real  property
  actions and proceedings law.
    f.  Such  notice mailed by the city collector pursuant to this section
  shall have stamped or printed thereon a reference to this section of the
  code.