240 registered owner entities starting with "O"
| Landlord / Owner entity | Grade | Buildings | Code Violations |
|---|---|---|---|
| Olson Joseph | A | 1 | 0 |
| Olson Marcus | A | 1 | 0 |
| Olson Margit Garnak | A | 1 | 0 |
| Olson Michael & Wangzhen | B | 2 | 0 |
| Olson Tyler & Chelsea Brewer | A | 1 | 0 |
| Oluwatoyin Da-Silva | A | 1 | 0 |
| Olvera Javier | A | 1 | 0 |
| Omar Bilal | B | 1 | 0 |
| O'Meara Caroline P & Matthew C Traub | A | 1 | 0 |
| Omens Jeffrey H & | A | 2 | 0 |
| Omniat Llc | D | 1 | 0 |
| Oneal Kenneth R | A | 1 | 0 |
| One Austin Center Llc | A | 1 | 0 |
| O'Neill James & Laura Anne Kelso | B | 1 | 0 |
| Oneill Katherine E & | A | 1 | 0 |
| Ong Albert | B | 1 | 0 |
| Ong Phaik-Khee & Yan-Sy Liew | A | 1 | 0 |
| Onion Creek Apartment Partners | F | 1 | 1 |
| Onion Creek Housing Partners Ltd | F | 1 | 14 |
| Ono Kohji | A | 2 | 0 |