Effective Rent vs. Asking Rent: Why the Gap Matters for CRE Investors

The rent a landlord advertises and the rent a tenant actually pays are rarely the same number. The gap between them is where free rent, tenant improvement dollars, and negotiating leverage live, and it’s a gap that underwriting models get wrong more often than not.

Key Takeaway: Asking rent is the sticker price. Effective rent is what a tenant actually pays after subtracting free rent and TI allowance, spread across the lease term. Investors who underwrite off asking rent alone risk overstating NOI, since concessions can absorb a meaningful share of headline rent before a tenant ever occupies the space.

What Is the Difference Between Asking Rent and Effective Rent?

Asking rent is the quoted rate a landlord publishes for a vacant space, typically expressed as an annual $/SF figure with no adjustment for concessions. Effective rent is the average rent actually collected over the lease term once free rent and tenant improvement value are netted out. The two converge only when a lease has zero concessions, which is rare in any market with meaningful vacancy or tenant leverage.

CompStak’s lease comps distinguish several related but distinct metrics, and the vocabulary matters for underwriting precision:

• Starting Rent is the contractual rent/SF at lease commencement, before any escalation.
• Net Effective Rent is the average monthly rental cost net of free rent and concessions across the term.
• Adjusted Effective Rent grosses up the annual effective rate to incorporate the full value of TI allowance (what CompStak’s platform labels landlord work) and free rent into a single comparable figure.
• Current or In-Place Rent is the rent/SF a tenant is paying today, which may differ from starting rent once escalations have run.

Asking rent sits outside this hierarchy entirely. It’s a marketing number that can drift from reality without anyone updating the sign, since no lease obligates a landlord to true it up.

Effective Rent vs. Asking Rent: How the Gap Actually Forms

The gap forms through concessions: free rent and tenant improvement allowance, the two levers landlords pull instead of cutting the headline rate. A landlord facing softer demand can hold asking rent flat and instead offer three extra months free or a larger TI package, which lowers effective rent without moving the number on the flyer.

This is a deliberate pricing strategy in many markets. Asking rent functions as an anchor in negotiation and, in some jurisdictions, as a benchmark for comparable-lease clauses in other tenants’ leases. Landlords have a real incentive to keep it elevated even while effective economics soften underneath it. Concessions are the release valve.

The scale of that release valve moves with the cycle. In the office sector, concession ratios have stayed elevated relative to historical norms but declined over the past two quarters for both Prime Class A and non-Prime Class A space, according to CompStak’s 2025 Biannual Office Market Report — Part Four. That direction matters more than the level: it signals landlords pulling back on concessions as a percentage of deal value, which tends to happen when effective rent starts closing the gap with asking rent rather than the reverse.

Source: CompStak’s 2025 Biannual Office Market Report — Part Four. Data as of Q4 2025.

Why the Gap Matters for CRE Investors

The gap matters because it determines actual NOI, and NOI is what a cap rate is applied to. A pro forma built on asking rent, without a concession adjustment, embeds an error into every downstream calculation, including debt service coverage and exit value.

Consider industrial. Bulk assets (200,000+ SF) posted adjusted effective rent of $10.66/SF in Q1 2026, up 0.9% year over year but still down 7.7% from peak, while free rent for bulk edged to 4.8% of term, down only slightly from a 4.9% peak in Q4 2025, per CompStak’s 2026 Biannual Industrial Market Overview — Part Three. An investor pricing a bulk industrial asset off starting rent alone, without accounting for nearly a month of free rent per year of term, would overstate first-year cash flow.

The mark-to-market spread tells a related but distinct story: how much room exists between what a lease is currently paying and what the market would support today. Bulk industrial mark-to-market spread sat at 2.5% in Q1 2026, down from a 4.7% peak in Q3 2024, while non-bulk held at 1.4%, down from a 3.9% peak in Q4 2023, according to the same report. Both spreads compressing at once signals that rollover upside is narrowing across size bands, not just at the top of the market.

IOS assets show the opposite dynamic. Industrial outdoor storage carries the widest spread of market rent over in-place rent at 29.8%, compared with 11.4% for Mega, 10.0% for Large, 8.7% for Mid-Size, and just 1.4% for Small Bay, per CompStak’s 2026 Biannual Industrial Market Overview — Part Two. An investor evaluating an IOS acquisition on in-place rent alone would miss a rollover opportunity nearly triple the size of a typical Mega-format deal.

Source: CompStak’s 2026 Biannual Industrial Market Overview — Part Three and Part Two. Data as of Q1 2026.

How to Calculate Net Effective Rent

Net effective rent equals total base rent collected over the lease term, minus the dollar value of free rent months and TI allowance, divided by the number of paying months and the leased square footage. A worked example illustrates the mechanics.

Take a 10-year, 20,000 SF office lease at $60.00/SF asking rent, with 6 months free rent and a $75/SF TI allowance. Total rent due over 120 months at $60.00/SF is $120,000,000 ÷ 20,000 SF, or $6,000/SF cumulative. Subtract the free rent value (6 months × $60.00/SF ÷ 12, applied against the term) and the $75/SF TI, then divide by the 114 paying months and gross up annually. The resulting net effective rent lands well below $60.00/SF, often in the high $40s to low $50s/SF range depending on discount assumptions, even though the asking rent on the listing never changed.

This is the calculation that separates a lease comp from a marketing sheet. It’s the reason CompStak’s Exchange requires analysts to verify starting rent, free rent, and Work Value separately on every submitted comp rather than accepting a single blended figure.

What the Spread Signals About a Market

A widening spread between market rent and current rent signals rollover upside; a narrowing spread signals a market approaching equilibrium. In Manhattan office, the 2026 year-to-date market-versus-current rent spread runs from 49.1% at Hudson Yards down to a citywide average of 19.9%, with the tightest top submarket at just 13.7%, according to CompStak’s CompStat analysis. That range is the difference between a submarket where in-place leases are deeply below market, generating strong mark-to-market upside on renewal, and one where existing tenants are already paying close to what a new tenant would pay today.

Rent growth context reinforces why this spread is worth tracking closely right now. The Columbia CompStak Rent Index reached a post-COVID high in Q1 2026, up 18.5% year over year, per the same CompStat report, developed in partnership with Columbia Business School. A rent index climbing that fast typically widens the gap between stale asking quotes and what tenants are actually agreeing to pay. That’s exactly the kind of divergence that shows up first in lease-level data, well before it appears in a published asking-rent survey.

Source: CompStak’s CompStat: rent growth, the industrial drop, and easing retail. Data as of Q1–Q2 2026.

FAQ: Effective Rent vs. Asking Rent

What is the difference between effective rent and asking rent? Asking rent is the published quote a landlord sets for a vacant space. Effective rent is the average rent a tenant actually pays after free rent and TI allowance are subtracted from the term. Effective rent is almost always the lower of the two.

How do you calculate net effective rent? Take total base rent due over the lease term, subtract the value of free rent and TI allowance, then divide by the number of paying months and square footage to arrive at a comparable annual $/SF figure.

Why does the effective rent gap matter for investors? Because NOI is built on effective rent, not asking rent. Underwriting off asking rent overstates first-year cash flow and can distort a cap rate calculation on acquisition.

What are concessions in a commercial lease? Concessions are the combined value of free rent and tenant improvement allowance (Work Value) landlords offer to secure a signed lease. CompStak tracks this as a concession ratio against total lease value.

Does asking rent or effective rent better reflect market value? Effective rent better reflects realized market value. Asking rent can stay flat for quarters while concessions absorb the actual softening in demand.

How wide can the spread get between market rent and in-place rent? It varies sharply by submarket and asset type. Manhattan’s Hudson Yards submarket showed a 49.1% market-versus-current spread in 2026, while IOS industrial assets carried a 29.8% spread nationally, well above conventional industrial size bands.

How does CompStak track the effective rent to asking rent spread? CompStak captures starting rent, in-place rent, free rent, and Work Value at the lease level through analyst-reviewed comps submitted via CompStak Exchange, giving investors a way to measure the real spread by market, submarket, and asset class rather than relying on published asking-rent surveys.

Pull lease-level starting rent, effective rent, and concession data directly from CompStak’s comp database instead of underwriting off a listing sheet. Get started with CompStak.