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Rent Determination: Market Rent vs. Contract Rent

8 min
2/6

Key Takeaways

  • Market rent is current achievable rent; contract rent is the actual amount tenants pay under existing leases.
  • The rent gap between market and contract rent signals value-add opportunity or income risk.
  • Rent comps should use recently signed leases (3-6 months) and adjust for amenity, size, and utility differences.
  • Effective rent (net of concessions) is the true measure of market rent—always adjust for free rent or other concessions.

Understanding the distinction between market rent and contract rent is essential for accurately underwriting rental properties. Market rent reflects what a unit would command if leased today under current conditions. Contract rent is what the tenant actually pays under an existing lease. The gap between these two figures—the rent gap—is one of the most important indicators of value-add opportunity or portfolio risk.

Market Rent vs. Contract Rent Defined

Market rent is the rental rate a property would command on the open market given its location, condition, size, and amenities, assuming a reasonable exposure period and a willing landlord and tenant. It is determined through rent comparable analysis—examining what similar units in the same submarket are currently leasing for. Contract rent is the actual amount specified in an existing lease agreement. In a rising market, contract rents on long-term leases often lag market rents because they were set at signing and may only adjust annually by a fixed percentage. In a declining market, contract rents may exceed current market levels, creating a situation where tenants are overpaying relative to alternatives—increasing the risk of non-renewal or early termination.

Rent Gap in Practice
A 20-unit apartment building has an average contract rent of $1,100/month. Market rent comps indicate similar units lease for $1,350/month. The $250/month rent gap across 20 units represents $60,000 in annual upside—the core of a value-add business plan. Conversely, if contract rents exceed market by $150/unit, the property faces $36,000 in annual income risk at renewal.

Why it matters: A 20-unit apartment building has an average contract rent of $1,100/month. Market rent comps indicate similar units lease for $1,350/month. The $250/month rent gap across 20 units represents $60,000 in annual upside—the core of a value-add business plan. Conversely, if contract rents exceed market by $150/unit, the property faces $36,000 in annual income risk at renewal.

Rent Comparable Methodology

Rent comps follow a methodology similar to sales comps but with key differences. Proximity matters—ideally within 1 mile for suburban markets and 0.5 miles for urban markets. Unit characteristics must align: bedroom count, bathroom count, square footage (within 15%), and condition. Lease timing is critical—use rents from leases signed within the past 3-6 months, not legacy rents on long-term tenants. Adjust for differences: if a comp has in-unit laundry and the subject does not, adjust downward by the market premium for that amenity (typically $50-$100/month). Always distinguish between gross rent (tenant pays no utilities) and net rent (tenant pays some or all utilities) to ensure apples-to-apples comparison.

Why it matters: Understanding this concept is essential for making informed investment decisions.

Effective Rent vs. Asking Rent

Asking rent is the advertised price. Effective rent accounts for concessions—one month free on a 12-month lease reduces effective rent by 8.3%. In soft markets, landlords frequently offer concessions rather than reduce asking rents because concessions are temporary and do not reset the base rent for renewals. When analyzing a market, always calculate effective rent: a market advertising $1,500/month with one month free has an effective rent of $1,375/month. Failing to account for concessions overstates market strength and leads to aggressive underwriting that may not hold up when your property competes for tenants.

Effective Rent Calculation
Effective Monthly Rent = (Asking Rent × Lease Term − Total Concessions) / Lease Term Example: ($1,500 × 12 − $1,500) / 12 = $1,375/month effective rent

Why it matters: Effective Monthly Rent = (Asking Rent × Lease Term − Total Concessions) / Lease Term Example: ($1,500 × 12 − $1,500) / 12 = $1,375/month effective rent

Key Takeaways

  • ✓Market rent is current achievable rent; contract rent is the actual amount tenants pay under existing leases.
  • ✓The rent gap between market and contract rent signals value-add opportunity or income risk.
  • ✓Rent comps should use recently signed leases (3-6 months) and adjust for amenity, size, and utility differences.
  • ✓Effective rent (net of concessions) is the true measure of market rent—always adjust for free rent or other concessions.

Sources

Common Mistakes to Avoid

Analyzing rental markets only at the metro level without submarket segmentation.

Consequence: Metro averages mask dramatic variation; downtown Class A and suburban Class C operate in different markets.

Correction: Always analyze rental metrics at the submarket level appropriate for your target property type.

Using asking rents instead of effective rents in financial projections.

Consequence: Concessions can reduce effective rent 5-15% below asking, overstating projected income.

Correction: Research concession levels and calculate effective rent for accurate income projections.

Test Your Knowledge

1.For Rent Determination: Market Rent vs. Contract Rent, which metric combination best indicates rental market health?

2.How should rental market analysis inform investment underwriting?

3.What is the most important trend to monitor in an active rental market?

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