LEGO Batman Guide: How to Unlock the I Own the Place Trophy

The 'I own the place.' trophy in LEGO Batman: Legacy of the Dark Knight is one of the more satisfying Bronze trophies to chase because it actually changes how the Bat Cave looks and functions. The requirement is simple on paper: buy every available Bat Cave expansion. The catch is the total Stud cost, which adds up to a hefty 326,000 Studs across five purchases. Here is exactly what you need, what each expansion costs, and how to make the grind as painless as possible.

How to purchase Bat Cave expansions

All five expansions are bought from construction crawlers scattered around the Bat Cave. Walk up to one and a purchase prompt appears automatically. You do not need to find them in any particular order. The trophy pops the moment you confirm the final purchase, regardless of which expansion you buy last.

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If you are unsure where the construction crawlers are, look for the small yellow-and-black machines sitting near unfinished sections of the cave. They are hard to miss once you know what to look for.

LEGO Batman Guide: How to Unlock the I Own the Place Trophy

All Bat Cave expansion costs

Here is the full breakdown of every expansion and its Stud price:

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The Suit Vault is essentially free at 1,000 Studs and should be your first purchase regardless of trophy hunting. The two 100,000 Stud expansions (Science Lab and Clean Slate) are where the real grind begins.

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Do not spend Studs on cosmetic items or Bat Cave props before buying these expansions if the trophy is your priority. At 326,000 total, every Stud counts early on.

How to farm enough Studs fast

Reaching 326,000 Studs without a plan takes a while. The fastest path involves stacking multipliers and targeting high-density areas. Check out the stud farming guide for LEGO Batman: Legacy of the Dark Knight for the full breakdown on multiplier tricks, the Stud Cache mechanic, and Jim Gordon's Rebound Launcher.

A few quick tips to keep in mind while grinding:

Smash everything in open-world areas before moving on. Crates, benches, and street furniture all drop Studs.
Replay earlier missions once you have Red Brick multipliers active. The Stud yield scales dramatically.
WayneTech Caches are worth hunting specifically because they reward Studs on top of Chips. The WayneTech Chip location guide covers every cache spot across Gotham.

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The Suit Vault expansion at 1,000 Studs unlocks your ability to access and swap suits from the Bat Cave directly. Buy it first since it is functionally useful, not just a trophy step.

What do you get beyond the trophy?

Each expansion adds a functional area to the Bat Cave rather than just a visual change. The Training Area lets you practice combat and refine counters. The Science Lab ties into gadget upgrades. The Display Area is where Bat Cave trophies and props are shown off. The Clean Slate expansion rounds out the cave's full layout. Owning all five genuinely makes the Bat Cave feel like a complete headquarters rather than a half-built room.

For players chasing the full trophy list, make sure to also check out the guide for unlocking Robin since several character-specific trophies tie into having your full roster available. For everything else, the complete LEGO Batman: Legacy of the Dark Knight guide collection has every trophy, challenge, and collectible covered.