Shell, white box, or tenant improvement? Draw the boundary before pricing

Names are not scopes

“Shell,” “white box,” and “tenant improvement” are useful shorthand, but they are not universal construction standards. One lease may deliver HVAC equipment and capped utilities; another may stop at structure and enclosure.

Pricing should begin with a responsibility matrix, not the project label. The matrix needs to address structure, slab, envelope, storefront, utility service, distribution, life safety, ceilings, walls, lighting, plumbing fixtures, and closeout requirements.

Watch the scopes that cross the line

Several systems rarely stay neatly inside one permit package. Underground plumbing may be installed with the shell but sized for the tenant plan. Fire service may be base building while head relocation belongs to the improvement. Electrical service can be shell scope while panels and distribution follow the tenant load.

Identify the final design criteria for shared infrastructure.
Assign the permit, inspection, testing, and closeout responsibility.
Show temporary caps, stubs, curbs, openings, and future connections.
Reconcile work that is cheaper or only practical when installed with the shell.

Price the handoff itself

The handoff between shell and tenant work creates real cost: remobilization, protection, demolition of temporary work, testing, controls integration, and responsibility for incomplete as-built information.

A clean scope boundary makes those costs visible early and prevents both packages from assuming the other one carried them.

Before comparing price per square foot, confirm that every bidder is pricing the same handoff condition.