There's a clause in the city charter that refutes anything Egghead might have planned. It specifically prohibits criminals from leasing any of Gotham City.
11 seconds sound clip from Batman (1966) - The Yegg Foes in Gotham (S2E14) TV Series.
You can hear this line at 00:15:36 in the Blu-ray version of the movie.
Quote context
[...]
- That's why we took the surreptitious route.
- Egghead's got a price on your cowl.
- The person bringing you in, dead or alive, gets $50,000.
- It's my guess that Egghead and his men had another crime in mind.
- We think they're going to loot the treasury.
- And we're going there right now.
- Clear all police channels for an emergency message.
[...]