Even in the offical patch notes listed on the wiki:
Blue PK changes, fishing, and more Mar 28 1999 9:35AM CST
A major optimization was done to houses and boats. You will no longer receive the objects that are on or in houses and boats until you step on them.
- You will still be able to see things that are on the steps.
No other talk about house's having no lock downs available outside (porches & steps). Therefor the current system would NOT be era-accurate. Or am I incorrect?April 14th update Apr 14 1999 11:01AM CST
You will no longer be able to lock things down under your house sign.