Every CRE metric, acronym, and concept explained in plain English.
The pace at which available space in a market is leased or sold over a given period. Positive absorption means more space is being filled than vacated; negative absorption means tenants are leaving faster than new ones arrive. Lenders and underwriters use market absorption rates to stress-test occupancy projections in pro formas.
Example: A submarket with 500,000 SF of vacant office space and 50,000 SF absorbed per quarter has a 10% quarterly absorption rate — roughly 2.5 years to fill at that pace.
The process of paying off a loan through regular principal-and-interest payments over time. Commercial loans are often 25–30 year amortization schedules, but the loan itself may balloon (come due in full) after 5, 7, or 10 years. Longer amortization = lower monthly payments but more total interest paid.
Example: A $1M loan at 6.5% interest, 30-year amortization = ~$6,321/month in principal + interest payments.
The minimum occupancy rate at which a property's income covers all operating expenses AND debt service. Below this number the property bleeds cash; above it, you're profitable. It's a critical stress-test metric — lenders want break-even occupancy well below current occupancy to protect against tenant losses.
Example: Operating expenses of $120,000 + debt service of $180,000 against $500,000 gross potential rent = 60% break-even. If occupancy drops below 60%, the deal loses money.
The most widely used metric for valuing and comparing commercial properties. It measures a property's income yield independent of financing — two investors with different leverage see the same cap rate. The formula is NOI divided by property value. Higher cap rates signal higher yield (and typically higher risk or lower-demand markets); lower cap rates signal premium, stable assets.
Typical ranges: Class A multifamily (primary markets): 3.5–5.5% · Industrial: 5–7% · Retail: 5.5–8.5% · Office: 6–9%
When cap rates fall over time — meaning investors pay more for the same income stream. Compression happens when demand for CRE increases, interest rates fall, or capital floods a market. Since Value = NOI / Cap Rate, a compressed cap rate drives valuations up even when income stays flat. The reverse — cap rate expansion — reduces values.
Example: A property with $100,000 NOI at a 6% cap rate = $1.67M. If cap rates compress to 5%, the same NOI = $2M value — a 20% gain with zero income growth.
Spending on improvements that extend a property's life or increase its value — roof replacements, HVAC systems, elevator overhauls, major renovations. Unlike operating expenses, CapEx is not deducted when calculating NOI for cap rate purposes. Underestimating CapEx is one of the most common mistakes in CRE underwriting, especially on older assets.
Rule of thumb: Budget $0.20–$0.50/SF per year for CapEx reserves on stabilized commercial properties; more for older buildings or value-add plays.
Annual pre-tax cash flow divided by total cash invested. Unlike cap rate, cash-on-cash accounts for your specific financing — two investors in the same property with different loans will see different cash-on-cash returns. It's the most direct measure of your actual yield on deployed capital.
Example: $30,000 in annual cash flow on a $300,000 down payment = 10% cash-on-cash return.
A tiered classification system for commercial real estate quality, location, and tenant profile. Class A: newest buildings, best locations, institutional-quality tenants, lowest cap rates. Class B: older or secondary-location assets, solid but not trophy; most of the market. Class C: older, deferred maintenance, lower-income or secondary tenants, higher cap rates and risk. Classifications are relative to a specific market, not universal.
Core: Stabilized, high-quality assets in primary markets with strong tenants and long leases. Lowest risk, lowest return — institutional investors' bread and butter. Core-Plus: Similar quality but with modest upside potential — lease-up opportunity, minor capital improvements, or slightly secondary location. Slightly more risk and return than core, but well short of value-add.
Expected returns: Core: 5–8% total return · Core-Plus: 7–10% · Value-Add: 10–15% · Opportunistic: 15%+
The ratio of a property's NOI to its annual debt service (principal + interest). The most important underwriting metric for lenders — it tells them how much cushion exists between income and loan payments. Most commercial lenders require a minimum DSCR of 1.20–1.25x at origination; below 1.0x means the property can't cover its debt from operations.
Example: NOI of $180,000 / annual debt service of $144,000 = 1.25 DSCR — just at the typical lender minimum.
A lender's return metric that measures NOI as a percentage of the loan amount — independent of interest rates and amortization. It gained popularity after the 2008 crisis as lenders wanted a metric immune to interest-rate manipulation. Higher debt yield = less risk for the lender. Most institutional lenders require a minimum debt yield of 8–10%.
Example: $180,000 NOI / $1,800,000 loan = 10% debt yield.
The investigation period after a purchase contract is signed — typically 30–60 days for commercial deals. It covers physical inspection (property condition assessment, environmental), financial review (rent rolls, expense history, leases), legal review (title, zoning, survey), and market analysis. Proper due diligence reveals the gap between the seller's pro forma and reality.
Potential gross income (all units fully occupied at market rent) minus vacancy and collection losses. It's the realistic income estimate before operating expenses — a more honest starting point than 100% occupancy assumptions. Typical vacancy assumptions range from 5% (tight multifamily markets) to 10–15% (office, retail).
Total cash distributions returned to investors divided by total equity invested. An equity multiple of 2.0x means you doubled your money over the hold period. It's a simpler measure than IRR because it ignores the time value of money — a 2.0x over 3 years is far better than a 2.0x over 10 years, which is why you need both metrics together.
Example: $500,000 invested, $1,100,000 total returns = 2.2x equity multiple.
A quick-and-dirty valuation shortcut: property price divided by annual gross rent. It ignores operating expenses entirely, which makes it imprecise — but useful for fast comparisons within a homogeneous market (same property type, same neighborhood). Lower GRM = cheaper relative to income.
Example: $1,200,000 property with $100,000 annual gross rent = 12x GRM. Compare to similar properties trading at 10–14x in the same submarket.
A lease structure where the landlord pays all operating expenses (taxes, insurance, maintenance, utilities) and the tenant pays a single flat rent. Simple for tenants; risky for landlords if operating costs spike. Most common in residential and older office buildings. Contrast with NNN leases where tenants bear those costs.
The annualized return that makes the net present value of all cash flows (including the sale) equal to zero. IRR accounts for the time value of money — a dollar today is worth more than a dollar in five years. It's the benchmark return metric for institutional investors and syndicators. Target IRRs: Core 6–8%, Value-Add 12–18%, Opportunistic 18%+.
Limitation: IRR can be inflated by early cash flows or short hold periods. Always pair with equity multiple to get the full picture.
The annual debt service (principal + interest) expressed as a percentage of the original loan amount. It's a fixed-rate loan's annual cost ratio — useful for quickly calculating debt service without running a full amortization table. If the loan constant exceeds the cap rate, the deal is likely negatively leveraged.
Example: $144,000 annual debt service on a $1,800,000 loan = 8% loan constant.
The loan amount as a percentage of the property's appraised value — the primary measure of leverage risk for lenders. Higher LTV = more leverage = more risk. Commercial lenders typically cap LTV at 65–75% for most asset classes; government-backed programs (Fannie Mae, FHA) can reach 80%+. LTV and DSCR are the two underwriting constraints that together define the maximum loan size.
Example: $700,000 loan on a $1,000,000 property = 70% LTV.
A hybrid between a gross lease and a triple net (NNN) lease. The tenant pays base rent plus a portion of operating expenses — typically utilities and sometimes janitorial — while the landlord covers taxes, insurance, and structural maintenance. Negotiated on a deal-by-deal basis; the exact split varies widely. Common in mid-size office and flex industrial.
A property's total revenue minus all operating expenses, before debt service and income taxes. It's the foundational number for all CRE analysis — NOI drives cap rate, property value, loan sizing, and DSCR. Everything else in the income statement flows from a clean NOI calculation.
Not included in operating expenses: Mortgage payments, CapEx, depreciation, income taxes — these come after NOI.
The recurring costs of running a commercial property that are deducted from gross income to arrive at NOI. Typical categories: property taxes, insurance, property management fees (typically 4–10% of collected rents), maintenance and repairs, utilities (if not tenant-paid), landscaping, and administrative costs. CapEx, debt service, and depreciation are excluded.
Expense ratio benchmarks: Multifamily: 35–45% of EGI · Office: 35–50% · Retail NNN: 10–20% (tenants pay most expenses) · Industrial: 15–25%
The highest-risk, highest-return investment strategy in CRE. Opportunistic deals involve significant uncertainty — distressed properties, ground-up development, major repositioning, or markets with structural problems. Investors accept illiquidity and execution risk in exchange for 15–25%+ target IRRs. These deals rely heavily on value creation rather than income.
A forward-looking financial projection for a property — what income, expenses, and returns are expected over a hold period. Brokers present seller-optimized pro formas; your job as a buyer is to stress-test every assumption. The most common pro forma errors: above-market rent projections, below-market vacancy assumptions, and ignored CapEx reserves.
Red flags: Pro formas showing 3–5% annual rent growth in flat markets, vacancy below 5% in soft markets, or zero CapEx reserves on a 30-year-old building.
A property that has reached its projected long-term occupancy and income levels — typically defined as 90–95%+ occupied with market-rate leases in place. Stabilized properties trade on current NOI (and thus current cap rates). Unstabilized or lease-up properties trade on projected stabilized NOI, which requires additional underwriting risk and a lower entry cap rate assumption.
A lease structure where the tenant pays base rent plus all three "nets": property taxes, insurance, and maintenance/operating expenses. The landlord collects rent with minimal obligations — essentially a passive income structure. NNN leases are most common in single-tenant retail (fast food, pharmacies, dollar stores) and industrial. The trade-off: lower base rent in exchange for tenant bearing cost risk.
Typical NNN cap rates: Investment-grade tenants (Walgreens, McDonald's): 4.5–5.5% · Non-investment-grade: 6–8%+
The process of analyzing a deal to determine whether it meets investment or lending criteria. Lenders underwrite to verify the loan is serviceable; investors underwrite to model returns. Both processes involve scrutinizing rent rolls, operating histories, market comps, and forward projections. Conservative underwriting assumes things go slightly wrong; aggressive underwriting assumes everything goes right.
The percentage of a property's rentable space that is unoccupied. Physical vacancy is actual empty units; economic vacancy includes occupied units where rent isn't being collected (concessions, delinquency). Underwriters typically apply a 5–10% vacancy factor even on fully occupied properties — a prudent assumption that a property won't be 100% occupied 365 days a year.
An investment strategy targeting properties with below-market income that can be increased through capital improvements, lease-up, better management, or repositioning. Value-add deals require active management and carry more risk than core investments, but offer higher return potential — typically 10–15% IRR targets. The business plan is: buy at a low current cap rate on in-place NOI, execute the business plan, and sell at a higher NOI (ideally into a stable cap rate environment).
A provision of the U.S. tax code (Section 1031) that allows investors to defer capital gains taxes by reinvesting sale proceeds into a "like-kind" replacement property. The rules are strict: you must identify a replacement property within 45 days of the sale and close within 180 days, and the replacement property's value must meet or exceed the sold property's value. A properly executed 1031 exchange can compound wealth tax-deferred across decades.
Key rules: Must use a qualified intermediary (QI) to hold funds · Cannot take "boot" (cash out) without triggering partial taxes · Both properties must be held for investment or business use
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