The CRE Glossary

The CRE Glossary

Plain-English definitions of the commercial real estate terms that show up in deals, written by a practitioner, worked on real numbers. Every term below is taught in full inside the courses.

CAM Charges and Expense Recoveries · Cap Rate · CFBT · Cash-on-Cash Return · DSCR · EGI · Gross Lease vs. Net Lease · GPI · GRM · LTV · NOI · OER · Price Per Unit and Price Per Square Foot · Rent Escalations · The Due Diligence Documents You’ll Hear Named · Title, Encumbrances, and Clear Title

CAM Charges and Expense Recoveries

In multi-tenant properties — office buildings, retail centers, industrial parks — Common Area Maintenance (CAM) charges allow the landlord to recover the cost of shared spaces and services from tenants.

CAM charges cover expenses like: parking lot maintenance, landscaping, common area janitorial, exterior lighting, and property management fees. Tenants pay their pro-rata share: if a tenant leases 10% of the building, they pay 10% of the CAM pool.

Here’s the basic rhythm: during the year, tenants pay estimated CAM charges as a monthly addition to their base rent. At year-end, the landlord reconciles estimate against actual. If actual CAM exceeded the estimate, tenants owe the difference (a CAM true-up bill). If expenses were lower, tenants receive a credit.

For a beginner, that’s the essential idea: in a multi-tenant building, shared costs get pushed back to tenants by their pro-rata share, trued-up once a year. That’s enough to read an OM and understand why “CAM” appears as both an expense and a recovery on the income statement.

The finer points — CAM caps, exclusions, audit rights, and the disputes that arise over what a landlord may legitimately put in the pool — are where a lot of money is won or lost in multi-tenant deals. You’ll work through those negotiation mechanics in I3: Leases.

Full explanation: CAM Charges and Expense Recoveries →

Capitalization Rate (Cap Rate)

The capitalization rate — universally called the cap rate — is the return a property would generate if purchased with all cash (no mortgage).

Formula: Cap Rate = NOI ÷ Purchase Price

A property with $200,000 NOI selling for $3,000,000 has a 6.67% cap rate. Flip the formula and you get the implied value: Value = NOI ÷ Cap Rate. If the market consensus for that asset class in that submarket is a 6.5% cap, the implied value is $200,000 ÷ 0.065 = $3,076,923.

Cap rate is the market’s pricing language. When a broker says “this is a 5-cap deal,” they mean you’ll earn 5% on your purchase price before financing, before taxes, before depreciation. When they say cap rates are compressing, they mean prices are rising relative to income. When they say cap rates are expanding, prices are falling or income hasn’t kept up.

Two things drive cap rates: risk and growth expectations. A 4.5% cap rate in a gateway city (Manhattan, LA) reflects low perceived risk and strong rent growth expectations. A 9% cap rate in a rural secondary market reflects higher perceived risk and slower growth. You’re not getting a “better deal” with a 9-cap unless you believe the income is stable and the risk is manageable.

One warning: cap rate assumes stabilized, operating income. Don’t apply it to a property still in lease-up or mid-renovation. (How the same building can be worth one number “as-is” today and a different number once it’s stabilized — and how replacement cost sets a ceiling on price — is its own topic. You’ll go deep on those valuation methods in I1: Valuation.)

Full explanation: Capitalization Rate (Cap Rate) →

Cash Flow Before Tax (CFBT)

NOI is the property’s income before financing. Cash Flow Before Tax (CFBT) is what the investor actually receives in their bank account after paying the lender.

The formula: CFBT = NOI − Annual Debt Service

Annual Debt Service is the total of all mortgage payments over the year: principal + interest. A $2,000,000 property financed at 7% over 25 years (30-year am) might carry annual debt service of ~$160,000. If the NOI is $200,000, CFBT = $40,000.

That $40,000 — on a $500,000 equity investment (25% down) — represents an 8% cash-on-cash return. Or it might not be enough to cover a major roof replacement. Context matters.

CFBT is important because NOI can look excellent while CFBT is negative. This happens when debt service exceeds NOI — called “negative leverage.” Aggressive financing (high loan amounts, high interest rates) can turn a solid property into a cash drain. This is why the Debt Service Coverage Ratio (DSCR), which you’ll learn in Module 3, exists: lenders require NOI to cover debt service by a safety margin before they’ll make the loan.

One critical point: CFBT does not account for taxes. It sits between property-level performance (NOI) and personal-level performance (after-tax cash flow). For most investors, CFBT is the practical “is this deal worthwhile?” number — the cash in hand before calling their accountant. (Real estate tax treatment is involved and case-specific; confirm your numbers with a CPA before relying on them.)

Full explanation: Cash Flow Before Tax (CFBT) →

Cash-on-Cash Return

Cash-on-cash return (CoC) measures the annual cash income generated by a property relative to the equity invested.

Formula: CoC = Annual CFBT ÷ Total Equity Invested

If you invested $500,000 in equity (down payment + closing costs) and the property generates $40,000 in annual CFBT, your cash-on-cash return is 8%.

CoC is a current-yield metric — it measures what you’re earning right now, this year, on your invested dollars. It doesn’t account for future rent growth, appreciation, or the eventual equity payoff when you sell. It’s the CRE equivalent of the dividend yield on a stock.

Target CoC benchmarks vary by investor type and market:

• Core investors (low risk, gateway markets): 4–6% CoC
• Core-plus investors: 5–7%
• Value-add investors: 6–9% going-in CoC, higher on stabilized basis
• Opportunistic deals: sometimes negative CoC early; investors seek total return

Why does CoC matter if it’s just one year? Because it validates the deal makes sense as an income investment before you factor in speculative appreciation. If you’re underwriting a deal assuming 3% annual rent growth and 5% appreciation but the going-in CoC is 2%, you’re betting on the future. If that future doesn’t arrive, you have a negative-carry investment. Smart investors require a reasonable CoC threshold before they’ll rely on appreciation assumptions.

Full explanation: Cash-on-Cash Return →

Debt Service Coverage Ratio (DSCR)

Debt Service Coverage Ratio (DSCR) measures whether a property generates enough NOI to cover its loan payments with room to spare.

Formula: DSCR = NOI ÷ Annual Debt Service

Annual debt service = total principal + interest payments over one year.

A property with $250,000 NOI and $200,000 in annual debt service has a DSCR of 1.25. The lender’s minimum threshold is usually 1.20–1.25 for conventional loans (1.25 is most common). This means the property must earn 25% more than it needs to pay the mortgage. That buffer protects the lender if income dips temporarily.

A DSCR below 1.0 means the property cannot cover its own debt — the owner must feed money into the deal each month. This is called “negative carry” or “alligator property” (it eats your cash). A DSCR of exactly 1.0 means the property breaks even on debt service — every dollar of NOI goes to the lender with nothing left for the investor.

Lenders underwrite DSCR based on their own stabilized NOI estimate, not the seller’s. They’ll typically use a standardized vacancy rate (often 5% for apartments regardless of current occupancy) and their own expense estimates. If the seller’s proforma shows a 1.35 DSCR and the lender’s underwriting produces 1.15, the deal may not qualify at the requested loan amount.

Full explanation: Debt Service Coverage Ratio (DSCR) →

Effective Gross Income (EGI)

Start with GPI — the theoretical ceiling — and then subtract reality. That’s Effective Gross Income, or EGI.

The formula: EGI = GPI − Vacancy & Credit Loss + Other Income

Vacancy and credit loss represent the income you don’t collect: empty units, tenants who default, or concessions (like “first month free” offers). A market-rate apartment complex typically runs 5–8% vacancy. A single-tenant industrial building might sit at 0% — until the tenant leaves, at which point it jumps to 100%. Understanding vacancy risk is inseparable from understanding EGI.

Other income adds back revenue that isn’t from base rent: laundry machines, parking fees, storage unit rentals, pet fees. In a large apartment complex, other income can add $100–$150 per unit per year. It won’t transform a bad deal into a good one, but it absolutely counts.

Here’s why EGI matters in practice: when a broker quotes you an income figure for a property, ask which number they’re using — GPI or EGI. Brokers marketing a property often lead with GPI because it sounds larger. Underwriters analyzing a loan use EGI because it’s closer to what the bank will actually receive.

A common error for new investors is building a financial model starting from GPI while forgetting to apply vacancy. The result: an NOI that looks strong on paper but collapses the moment one tenant moves out. EGI forces you to build in the buffer.

Full explanation: Effective Gross Income (EGI) →

Gross Lease vs. Net Lease

A commercial lease defines who pays which expenses. The two poles of the spectrum are gross leases and net leases — and everything in between.

In a gross lease (also called a full-service lease), the tenant pays a single flat rent and the landlord pays all operating expenses: property taxes, insurance, maintenance, utilities. This is common in office buildings where multiple tenants share a building and it’s impractical to separately meter utilities or apportion maintenance.

In a net lease, the tenant pays base rent plus some or all operating expenses. The word “net” tells you the landlord’s rent is “net” of expenses — the tenant picks up the costs. Three variants:

• Single Net (N): Tenant pays base rent + property taxes. Rare.
• Double Net (NN): Tenant pays base rent + property taxes + insurance. Common in older retail.
• Triple Net (NNN): Tenant pays base rent + property taxes + insurance + maintenance. The landlord’s preferred structure — maximum pass-through.

For an investor, NNN leases are attractive because the landlord’s expenses are predictable and the NOI is “clean.” A Walgreens NNN lease means the tenant pays for everything; the landlord deposits the check. A gross lease means every spike in property taxes, insurance, or HVAC costs eats directly into the landlord’s NOI.

Modified gross leases sit in the middle — landlord pays some expenses, tenant pays others, negotiated on a deal-by-deal basis. (Lease terms carry real legal weight; have an attorney review any lease before you rely on it.)

Full explanation: Gross Lease vs. Net Lease →

Gross Potential Income (GPI)

Every CRE analysis starts at the top of the income statement with one question: if every unit in this property were leased at full market rent, with zero days of vacancy, how much money would come in each year? That theoretical maximum is called Gross Potential Income, or GPI.

GPI is not real money — it’s a ceiling. A fully occupied apartment building with 20 units each renting at $1,500/month has a GPI of $360,000 per year (20 × $1,500 × 12). A strip mall with 10,000 square feet leased at $25/sq ft NNN has a GPI of $250,000.

Why does this ceiling matter if it’s not real? Because every other number in the income statement is calculated as a deduction from GPI. Vacancy, credit losses, concessions — they all reduce GPI down to what the property actually collects. You can’t measure those losses without knowing the starting point.

GPI is also the first number you’ll see on any broker’s Offering Memorandum (OM). Savvy investors immediately ask: “Is this GPI based on current rents or market rents?” If a landlord has tenants paying below-market rents, the OM may show inflated GPI to make the deal look more attractive. Knowing what GPI is — and what it isn’t — keeps you from overpaying.

One more thing: GPI assumes 100% occupancy and zero bad debt. Those assumptions never hold in real life. That’s exactly why the next lesson exists.

Full explanation: Gross Potential Income (GPI) →

Gross Rent Multiplier (GRM)

The Gross Rent Multiplier (GRM) is a quick-and-dirty valuation tool — a first filter to determine whether a property’s asking price is in the right ballpark before you do deeper analysis.

Formula: GRM = Purchase Price ÷ Gross Annual Rents

A property asking $2,000,000 with $280,000 in annual gross rents has a GRM of 7.14. Alternatively: Value = GRM × Annual Gross Rents.

GRM ignores expenses, vacancy, and financing. That’s both its weakness and its strength. It’s weak because two properties with identical GRMs can have completely different profitability if one has sky-high expenses. It’s strong because it’s instant — you can screen 20 listings in 10 minutes with GRM before spending hours building NOI models.

GRM benchmarks also vary by market and asset class. In a high-appreciation coastal city, multifamily GRMs of 14–18 are normal. In secondary Midwest markets, GRMs of 8–11 are common. Knowing the local GRM range tells you instantly whether a listing is priced at market, above, or below.

A practical use case: a broker sends you a 10-property blast. Three have GRMs 20% above market — skip them. Two have GRMs at market — run the NOI model. One has a GRM 15% below market — that’s your first call. GRM doesn’t close deals; it directs your attention efficiently.

Full explanation: Gross Rent Multiplier (GRM) →

Loan-to-Value (LTV)

Loan-to-Value (LTV) is the ratio of the loan amount to the appraised value of the property.

Formula: LTV = Loan Amount ÷ Appraised Value

A lender offering 70% LTV on a property appraised at $3,000,000 will lend up to $2,100,000. The buyer must cover the remaining $900,000 — the equity (or down payment). Typical LTV ranges in CRE:

• Multifamily (Agency — Fannie/Freddie): up to 80% LTV
• Conventional bank loans: 65–75% LTV
• Bridge loans (value-add): 65–75% LTV of as-is value; sometimes 80–85% of cost
• SBA 504 loans (owner-occupied): up to 90% LTV

Higher LTV means less equity required — which magnifies returns if the deal works, and magnifies losses if it doesn’t. A 65% LTV loan on a $2,000,000 property requires $700,000 equity; an 80% LTV loan requires only $400,000. That extra $300,000 can fund a second deal — or become a problem if property values drop and the loan balance exceeds the new appraised value (being “underwater”).

LTV is determined by the appraiser’s value, not the purchase price. If you pay $3,200,000 for a property appraised at $2,900,000, the lender calculates LTV against $2,900,000. The gap is your problem. This is why paying above appraised value on a leveraged deal requires extra equity coverage.

Full explanation: Loan-to-Value (LTV) →

Net Operating Income (NOI)

Net Operating Income — NOI — is the single most important metric in commercial real estate. If you understand only one number from this course, it is this one.

The formula: NOI = EGI − Operating Expenses

Operating expenses are the costs of running the building day-to-day: property taxes, insurance, property management fees, repairs and maintenance, utilities (if the landlord pays them), landscaping, and reserves for replacement. What is NOT in operating expenses: mortgage payments, depreciation, income taxes, and capital expenditures. These are deliberately excluded so that NOI measures the property’s performance independent of how it’s financed.

Why does that matter? Because two investors could buy the same property with very different loan structures — one with 20% down and another with 40% down — but both buildings produce the same NOI. NOI is a property-level metric. Financing is an investor-level decision.

Continuing the example from Lesson 1.2: if that property’s EGI is $478,000 and operating expenses total $180,000, the NOI is $298,000.

NOI is the numerator in the cap rate formula (which you’ll learn in Module 2) and the income figure lenders use to size your loan. A $10,000 error in NOI estimation can result in a $150,000 error in property valuation. Getting NOI right is not a detail — it’s the job.

Full explanation: Net Operating Income (NOI) →

Operating Expense Ratio (OER)

The Operating Expense Ratio (OER) tells you what percentage of a property’s gross income is consumed by operating expenses.

Formula: OER = Operating Expenses ÷ EGI

A property with $180,000 in operating expenses and $300,000 in EGI has an OER of 60%. That means 60 cents of every dollar earned goes to running the building before a single dollar of debt service is paid.

OER benchmarks vary by asset class:

• Multifamily (apartments): 35–50%
• Office buildings: 50–65% (landlords often pay more utilities and maintenance)
• Industrial/NNN: 10–25% (tenants pay most expenses directly)
• Retail (gross lease): 40–55%

When you see an OER far below the benchmark for its asset class, be suspicious. A multifamily seller quoting a 28% OER likely omitted capital reserves, underestimates management fees, or is presenting “actual” expenses from a year they deferred maintenance. Investors who buy on proforma OER without verifying actual trailing-12 expenses get burned.

When you see an OER far above benchmark, it’s either a mismanaged property (an opportunity) or a structural problem (an expensive roof, outdated systems, high property tax assessment). Knowing which it is determines whether it’s a value-add play or a money pit.

OER is your first sanity check on any deal. Calculate it before you go further.

Full explanation: Operating Expense Ratio (OER) →

Price Per Unit and Price Per Square Foot

Two properties selling for $3,000,000 each are not comparable unless you know what you’re buying per unit. Enter price per unit and price per square foot — the normalized benchmarks professionals use to compare deals instantly.

Price per unit is used exclusively in multifamily. A 50-unit apartment building asking $5,000,000 has a price per unit of $100,000. A 20-unit building asking $2,600,000 is asking $130,000 per unit. In seconds you know the second building is 30% more expensive on a per-unit basis, even though the total price is lower.

Price per square foot ($/SF) is used across all commercial asset classes: office, retail, industrial, and mixed-use. A 20,000 SF retail center asking $4,000,000 is priced at $200/SF. Market comps for similar retail in that submarket might average $185/SF — telling you the asking price is 8% above market on a per-SF basis.

These benchmarks are calibrated against market comps. When you’re underwriting a deal, you should know the current $/unit or $/SF range for the asset class and submarket. You get this from broker databases, appraisal reports, and recent transaction data. Without comps, these numbers float in space. With comps, they become your fastest sanity check.

One nuance: price per unit says nothing about unit quality. A $120,000/unit comp in a Class A building with 900 SF units is not the same as a $120,000/unit asking price for a Class C building with 500 SF studios. Always layer quality and size context on top of the unit metric.

Full explanation: Price Per Unit and Price Per Square Foot →

Rent Escalations

Long-term commercial leases almost always include rent escalation provisions — scheduled increases in base rent over the lease term. How those escalations are structured directly affects the property’s NOI growth and, therefore, its value.

Fixed-step escalations are the most common structure in retail and industrial NNN leases. Rent increases by a fixed dollar amount or percentage at set intervals. Example: 2% annual increases, or $1.00/SF increases every 3 years. Predictable, easy to model — this is the one you’ll see most often as a beginner.

CPI-linked escalations tie the rent increase to the Consumer Price Index (CPI). If inflation is 4%, rent increases 4%. If inflation is 0%, rent stays flat. These protect purchasing power but make the income harder to forecast.

Flat leases with no escalation provisions are a red flag. A 10-year flat lease means no rent growth for a decade — your NOI is static while your expenses grow. The property’s real value erodes with each year of inflation.

When reviewing an OM’s rent roll, always identify each tenant’s escalation type, current rent, and future escalation schedule. That schedule is the revenue roadmap.

Two more lease-income terms you’ll hear and should recognize: percentage rent (common in retail — the tenant pays base rent plus a slice of sales above a set “breakpoint”) and WALT / WALE (weighted average lease term — how long, on average, your income is locked in across all tenants, which quantifies the risk of leases expiring and tenants leaving). Both shape NOI reliability, and you’ll learn to calculate and negotiate them in I3: Leases.

Full explanation: Rent Escalations →

The Due Diligence Documents You’ll Hear Named

Beyond title, every commercial acquisition involves a short list of due diligence documents. As a beginner, your job is to recognize each one, know what risk it addresses, and know to order it. The deep mechanics of each are covered in I2: Due Diligence.

Environmental Site Assessments (Phase I / Phase II). A Phase I ESA is a records-and-visual review by an environmental professional that flags whether hazardous substances may be present — no physical sampling. If it raises a concern, a Phase II ESA does the physical testing (soil, groundwater). Why care? Environmental cleanup liability can exceed the value of the property, and in many places the current owner is on the hook regardless of who caused it. Practical beginner rule: most lenders require a Phase I, and you should always want one. I2 covers how to read the findings.

Property Condition Assessment (PCA). An engineer’s inspection of the building’s major systems — roof, HVAC, plumbing, electrical, foundation, parking. It produces a list of immediate repairs and a multi-year schedule of expected capital expenditures (CapEx). Those future costs belong in your numbers, not as a surprise later. How to fold reserves into your underwriting is an I2 topic.

Estoppel certificate. A document signed by each tenant confirming the real status of their lease — current rent, dates, any side deals or disputes. It forces the truth into the record so a seller can’t hide a free-rent concession or a special arrangement. You’ll learn how to request and read them in I2.

SNDA (Subordination, Non-Disturbance, and Attornment Agreement). An agreement among tenant, lender, and landlord governing what happens to a lease if the property is foreclosed — most importantly, that a paying tenant won’t be kicked out. Major tenants and lenders insist on them. The mechanics are an I2 topic.

That’s the due diligence vocabulary. You now know what to order, what each document protects against, and where to go to master the details. (Several of these are legal and environmental matters — work with a qualified attorney, environmental professional, and CPA as appropriate before relying on any of them.)

Full explanation: The Due Diligence Documents You’ll Hear Named →

Title, Encumbrances, and Clear Title

Title is legal ownership. When you purchase commercial real estate, you receive a deed that transfers title from the seller to you. But title can come with strings attached — encumbrances — and identifying them before closing is critical.

Common encumbrances include:

• Liens: claims on the property by creditors (construction liens, tax liens, judgment liens). A contractor who wasn’t paid can file a mechanics’ lien against the property. Until that lien is released, the title is clouded.
• Easements: rights granted to a third party to use a portion of the property. A utility easement allows the power company to access a strip along your property. A shared driveway easement may limit what you can build.
• Deed restrictions/covenants: recorded limitations on use that run with the land. A prior owner may have recorded a covenant prohibiting certain tenant types or building uses.
• Encroachments: when a structure (a fence, building overhang, parking lot) physically crosses a property line. Encroachments can cloud title and create future disputes.

A title search examines the chain of ownership and recorded documents against the property. A title insurance policy protects the buyer (and lender) against undiscovered title defects. Lenders always require a lender’s title policy. Buyers should also purchase an owner’s title policy.

Clear title means the title search revealed no unresolved encumbrances, liens, or defects. You can’t get a conventional loan — and shouldn’t close any deal — without it. (Title is a legal matter; always have a real estate attorney and a title company review the search before you close.)

Full explanation: Title, Encumbrances, and Clear Title →

Educational definition only. Not investment, financial, or brokerage advice.