| Business | Phone |
| Building Conservation Assoc 902 Broadway, New York 10010 | (212) 777-1300 |
| Hier Co 973 5th Ave, New York 10021 | (212) 744-3570 |
| Higgins & Quasebarth 270 Lafayette St # 810, New York 10012 | (212) 274-9468 |
| Traditional Line 143 W 21st St, New York 10011 | (212) 627-3555 |
| Winthrop Group 37 W 39th St, New York 10018 | (212) 944-8855 |
| Prostrip Woodfinishers Inc 1916 Park Ave, New York 10037 | (212) 234-2089 |
| Michael Neumann Architecture 11 E 88th St, New York 10128 | (212) 828-0407 |
| Modern Tradition 128 E 91st St, New York 10128 | (212) 410-4988 |
| Nise General Restoring 2148 2nd Ave # 110, New York 10029 | (212) 369-5611 |