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Office lease definition

What is additional rent?

Amounts payable beyond net or base rent, which may include property taxes, insurance, operating expenses, management charges and other lease-defined recoveries.

Updated 2026-09-12
Fast answerAmounts payable beyond net or base rent, which may include property taxes, insurance, operating expenses, management charges and other lease-defined recoveries.

Why it matters

It can materially change monthly occupancy cost and is often paid as an estimate subject to reconciliation.

What to request

Request the current estimate, included and excluded costs, allocation method, recent reconciliation and audit language.

Planning example

For 8,000 rentable SF at $18/SF/year, the simple pre-tax estimate is $144,000 per year or $12,000 per month. 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.

Additional rent questions

Plain-language answers for Canadian office decisions.

What does additional rent mean in an office lease?

Amounts payable beyond net or base rent, which may include property taxes, insurance, operating expenses, management charges and other lease-defined recoveries.

Why does additional rent matter?

It can materially change monthly occupancy cost and is often paid as an estimate subject to reconciliation.