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Office lease definition

What is office sublease?

An arrangement under which an existing tenant grants a subtenant rights to use some or all of its premises, subject to the head lease and required consent.

Updated 2026-09-12
Fast answerAn arrangement under which an existing tenant grants a subtenant rights to use some or all of its premises, subject to the head lease and required consent.

Why it matters

The subtenant depends on both the sublease and the continuing head lease.

What to request

Review the head lease, consent, term, condition, furniture, services, defaults, restoration and expiry transition.

Planning example

Map each obligation to the landlord, tenant or subtenant. The example organizes arithmetic or evidence only; the transaction documents and facts determine the result.

Related decisions

Connect this term to the area, cost, building, flexibility and document provisions elsewhere in the office decision file.

Evidence boundary: office availability and quoted economics change. Confirm current premises, authority, area, costs, permitted use and documents for the specific transaction. Read the methodology.

Office sublease questions

Plain-language answers for Canadian office decisions.

What does office sublease mean in an office lease?

An arrangement under which an existing tenant grants a subtenant rights to use some or all of its premises, subject to the head lease and required consent.

Why does office sublease matter?

The subtenant depends on both the sublease and the continuing head lease.