The current online code incorporates ordinances passed through 20 June 2013. The most recent codified ordinance is Ordinance 124190.
| Ordinance codified | Code section(s) affected |
| 124182 | SMC 21.49.081 |
| 124183 | SMC 21.49.040 |
| 124187 | p. 99, Official Land Use Map |
| 124190 | Chapter 25.32 Table of Historic Landmarks |