Net Effective Rent
Net effective rent is the actual average rent a tenant pays per period after accounting for concessions such as free rent months, tenant improvement allowances, and other landlord incentives. It reveals the true cost of occupancy that face rent alone does not capture.
Net effective rent strips away the noise of lease concessions to reveal the true economic rent a tenant pays over the life of the lease. In competitive markets, landlords often offer inducements -- free rent periods, above-market TI allowances, moving allowances, or early termination options -- to attract tenants. These concessions reduce the landlord's actual income below the stated face rent. Net effective rent amortizes these costs over the lease term to calculate the true average rent.
For example, a 5-year lease at $30 PSF with 6 months of free rent has a face rent of $30 PSF but a net effective rent of approximately $27 PSF (54 months of rent spread over 60 months). If the landlord also provides $15 PSF in TI above market standard, that cost further reduces the net effective rent. Understanding net effective rent is essential for accurate property valuation because it reflects the actual income the property generates, not the headline number in the lease.
Investors and analysts should always convert face rents to net effective rents when comparing leases, properties, or markets. A property advertising $35 PSF rents with 12 months of free rent and $50 PSF in TIs is not truly comparable to a property at $30 PSF with no concessions. Market research firms increasingly report net effective rents alongside asking and face rents, but investors should verify the methodology and calculate their own net effective figures when conducting detailed underwriting.
Formula
Worked Example
A tenant signs a 10-year office lease for 5,000 SF at $32 PSF ($160,000/year) with 12 months free rent and a $25 PSF TI allowance ($125,000). Total face rent over 10 years = $1,600,000. Net rent = $1,600,000 - $160,000 (free rent) - $125,000 (TI) = $1,315,000 over 10 years. Net effective rent = $1,315,000 / 10 / 5,000 = $26.30 PSF, compared to the face rent of $32 PSF.
Related Terms
Market Rent
Market rent is the rental rate a property or space would command on the open market under current conditions, based on comparable leases for similar space in the same submarket. It serves as the benchmark against which in-place rents are evaluated.
Tenant Improvement (TI)
Tenant improvements (TIs) are modifications made to a commercial rental space to customize it for a specific tenant's needs. TI costs are typically negotiated as part of the lease and may be funded by the landlord, the tenant, or shared between them.
Rent Roll
A rent roll is a detailed document listing every tenant in a property along with their unit number, lease start and end dates, current rent, security deposit, and other lease terms. It is the primary source of truth for verifying a property's income during due diligence.
Gross Lease
A gross lease (also called a full-service lease) is a lease structure in which the landlord pays all or most property operating expenses -- including taxes, insurance, maintenance, and utilities -- and the tenant pays a single, all-inclusive rent amount.
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