The bare shell versus fitted floor decision, priced properly

Build the comparison correctly

Compare the fitted rent against shell rent plus amortised fit-out plus parallel rent plus project management plus a contingency for overrun. Most shell comparisons omit at least three of those.

When shell still wins

Long terms, specific technical requirements, and brand-critical environments where a generic fit-out will not do.

When fitted wins

Short to medium terms, uncertain headcount, and any situation where the business needs to be operational quickly.