Except as provided in section two hundred forty-eight, the provisions of this article shall apply only to tenements, as defined in subdivision eleven of section four, occupied as such before April eighteenth, nineteen hundred twenty-nine. Unless in this article otherwise specifically prescribed, none of its provisions shall be deemed to require any structural alteration in any tenement erected after April eleventh, nineteen hundred one and lawfully occupied as such on April eighteenth, nineteen hundred twenty-nine. Nothing in this article shall apply to converted dwellings. In addition to the provisions of this article, the following enumerated articles and sections shall, to the extent required therein, apply to tenements: Article 1. Introductory provisions; definitions

1. 2. Miscellaneous application provisions
2. 7-a. Temporary provisions
3. 8. Requirements and remedies
4. 9. Registry of names and service of papers
5. 10. Prostitution
6. 11. Laws repealed; saving clause; legislative intent; effect Sec. 28. Two or more buildings on same lot
7. 29. Painting of courts and shafts
8. 31. Size of rooms--subdivision six
9. 33. Cooking spaces
10. 34. Rooms in basements and cellars
11. 35. Entrance doors and lights
12. 37. Artificial hall lighting
13. 51. Shafts, elevators and dumbwaiters
14. 52. Stairs
15. 53. Fire-escapes
16. 55. Wainscoting
17. 56. Frame buildings and extensions
18. 57. Bells; mail receptacles
19. 58. Incombustible materials
20. 59. Bakeries and fat boiling
21. 60. Motor vehicle storage
22. 61. Business uses
23. 62. Parapets, guard railings and wires--subdivision two
24. 75. Water supply
25. 76. Water-closet and bath accommodations
26. 77. Plumbing and drainage
27. 78. Repairs
28. 79. Heating
29. 80. Cleanliness
30. 81. Receptacles for waste matter
31. 83. Janitor or housekeeper