Glossary
The underwriting vocabulary
40 terms, defined properly. Each one has the formula, a worked example with arithmetic that ties out, and the mistake people actually make with it. No sign-up and nothing gated.
Income and the rent roll
- Gross potential rentGross potential rent is the rent a property would collect if every unit were occupied for all twelve months at full rent, with no vacancy, no concessions and no delinquency. It is the top line of the pro forma, and everything below it is a deduction.
- Loss to leaseLoss to lease is the difference between what a unit could rent for at today's market rate and what the sitting tenant is contractually paying. It appears as a deduction from gross potential rent when the pro forma is stated at market rent.
- Effective gross incomeEffective gross income is all the revenue a property is expected to collect in a year: gross potential rent, less vacancy, loss to lease, concessions and bad debt, plus other income. It is the revenue figure operating expenses are subtracted from to reach net operating income.
- Net operating incomeNet operating income is a property's effective gross income less all operating expenses, before debt service, income taxes, depreciation and capital expenditure. It is the figure a cap rate is applied to, the numerator of debt yield and DSCR, and the number a purchase price is ultimately negotiated against.
- Other incomeOther income is every dollar a property collects that is not rent for the space itself: utility reimbursements, parking, storage, pet rent, application and administrative fees, late fees, laundry, and amenity or trash charges. It is added to rent revenue on the way to effective gross income.
- Rent rollA rent roll is the unit-by-unit or tenant-by-tenant schedule of who occupies a property, what they pay, and when their lease ends. It is the primary evidence behind every revenue assumption in an underwriting model.
- T-12A T-12 is a trailing twelve month operating statement: every income and expense line a property actually produced over the last twelve months, normally shown as twelve monthly columns with an annual total. It reports what happened, as opposed to what a seller projects.
- Economic versus physical occupancyPhysical occupancy is the share of units that are occupied. Economic occupancy is the share of potential rent that is actually collected. The gap between them is everything that stops an occupied unit from paying full rent: loss to lease, concessions, bad debt, employee units and down units.
- Operating expense ratioThe operating expense ratio is total operating expenses divided by effective gross income. It is a fast sanity check on whether an expense budget is plausible for the asset type, the market and the way the property is run.
- Break-even occupancyBreak-even occupancy is the occupancy level at which a property's collections exactly cover its operating expenses and debt service, with nothing left over. Below it, the property consumes cash instead of producing it.
Capital and reserves
- Capital expenditure versus operating expenseAn operating expense keeps a property running in its current condition and is deducted above the net operating income line. A capital expenditure replaces or improves a component with a life beyond the current year and is deducted below it. Which side of the line an item lands on changes the property's value.
- Replacement reservesReplacement reserves are an annual allowance set aside for the periodic replacement of building components that wear out: roofs, HVAC, appliances, parking surfaces, elevators. They smooth lumpy capital spending into a level annual charge.
Returns and valuation
- Cap rateA cap rate is a property's net operating income divided by its value or price, expressed as a percentage. It is the unlevered first-year yield on the purchase price and the standard shorthand for what a market is paying for a stream of property income.
- Going-in versus exit cap rateThe going-in cap rate is year-one NOI divided by the purchase price. The exit or terminal cap rate is the rate applied to the forward NOI at the end of the hold to estimate the sale price. The spread between them is one of the largest and least evidenced assumptions in any underwriting.
- Internal rate of returnThe internal rate of return is the discount rate at which the net present value of a deal's cash flows equals zero. It expresses a full investment, including the timing of every contribution and distribution, as a single annualised percentage.
- Equity multipleThe equity multiple is total distributions divided by total equity contributed, expressed as a multiple. A 2.0x means an investor received two dollars back for every dollar put in, counting the original dollar.
- Cash-on-cash returnCash-on-cash return is a year's cash flow after debt service divided by the total equity invested. It measures the current income yield on the money actually at risk, ignoring appreciation and any eventual sale.
- Yield on costYield on cost is stabilised net operating income divided by total project cost, including land, hard costs, soft costs, financing costs and carry. It is the development and value-add equivalent of a cap rate, and the spread between it and the market cap rate is where the profit comes from.
Debt and financing
- Debt service coverage ratioThe debt service coverage ratio is net operating income divided by annual debt service. A 1.25x means the property produces $1.25 of income for every $1.00 of principal and interest owed, so net operating income could fall by 20 percent before coverage reaches 1.00x and the loan stops being covered.
- Debt yieldDebt yield is net operating income divided by the loan amount, expressed as a percentage. It measures the return a lender would earn on its loan if it took the property back and operated it, and unlike DSCR it is unaffected by interest rate, amortisation schedule or loan term.
- Loan to valueLoan to value is the loan amount divided by the property's value, expressed as a percentage. It is the most familiar leverage constraint and, on a purchase, is normally tested against the lesser of the appraised value and the purchase price.
- Loan to costLoan to cost is the loan amount divided by total project cost. It is the leverage constraint used on construction and heavy value-add loans, where the property has no stabilised value to lend against and cost is the only verifiable basis.
- Loan constantThe loan constant is annual debt service divided by the original loan balance, expressed as a percentage. It combines the interest rate and the amortisation schedule into one number, which is what makes it the right rate to compare against a cap rate.
- Interest-only periodAn interest-only period is a stretch at the start of a loan during which the borrower pays interest and no principal. It raises early cash flow and coverage, and it ends with a step up in debt service that has to be modelled.
- Loan sizingLoan sizing is the process of determining the maximum loan proceeds a property supports. A lender runs three independent tests, a loan-to-value cap, a minimum debt service coverage ratio at a stressed rate, and a minimum debt yield, and lends the lowest of the three.
- Yield maintenance and defeasanceYield maintenance and defeasance are the two standard mechanisms that make a fixed-rate commercial mortgage expensive to repay early. Yield maintenance charges the lender's lost interest as a lump sum; defeasance substitutes a portfolio of government securities for the property as collateral.
Leasing
- Tenant improvements and leasing commissionsTenant improvements are the landlord's contribution to fitting out a space for a tenant, quoted per square foot. Leasing commissions are the brokerage fees paid on a signed lease, quoted as a percentage of the rent over the term. Together they are the cost of putting a tenant in place, and they are capital, not operating expense.
- Lease rolloverLease rollover is what happens when a lease expires: the tenant renews, or leaves and the space sits empty until a new tenant is found and fitted out. Modelling it means applying a renewal probability, downtime, leasing capital and a new market rent to every expiring lease.
- Weighted average lease termWeighted average lease term is the average remaining term across a property's leases, weighted by either rent or leasable area. It is the standard single-number summary of how long a commercial property's income is contracted for.
- Triple net and expense recoveriesUnder a triple net lease the tenant pays base rent plus its share of the property's taxes, insurance and common area maintenance. Expense recoveries are the mechanism that bills those costs back, normally as a pro rata share based on the tenant's proportion of the building's leasable area.
- Expense stop and base yearIn a gross or modified gross lease, an expense stop is the level of operating expenses the landlord absorbs, with the tenant reimbursing everything above it. A base year stop sets that level equal to the actual operating expenses in the lease's first calendar year.
- Percentage rentPercentage rent is additional rent a retail tenant pays based on sales above a threshold called the breakpoint. It gives the landlord participation in a tenant's success while keeping base rent at a level the tenant can carry in a weak year.
Partnership economics
- Preferred returnA preferred return is a threshold rate of return that limited partners receive on their capital before the general partner participates in profits beyond its own pro rata share. It is a priority in the distribution queue, not a promise that the money will be there.
- Distribution waterfallA distribution waterfall is the ordered set of tiers that determines how cash is split between limited and general partners. Each tier is filled completely before any money reaches the next one, and the general partner's share rises as it goes.
- PromoteThe promote is the general partner's share of profits in excess of its pro rata capital contribution, earned once the limited partners have received their capital back plus the preferred return. It is the performance compensation in a real estate partnership.
- GP catch-upA general partner catch-up is a waterfall tier in which the general partner receives most or all of the distributions after the preferred return has been paid, until it has received its full promote percentage of all profit distributed so far. It restores the economic bargain the preferred return interrupted.
Tax
- DepreciationDepreciation is the annual deduction that lets an owner recover the cost of a building over a fixed period set by statute. It reduces taxable income without reducing cash flow, which is why after-tax returns on real estate exceed pre-tax returns more often than in most asset classes.
- Depreciation recaptureDepreciation recapture is the portion of the gain on sale attributable to depreciation previously deducted, taxed at a rate above the long-term capital gains rate. For real property the recaptured amount is unrecaptured section 1250 gain, subject to a statutory rate cap of 25 percent.
- Cost segregation and bonus depreciationA cost segregation study reclassifies parts of a building into shorter-lived asset categories, typically five, seven and fifteen year property. Bonus depreciation then allows a percentage of that reclassified basis to be deducted immediately rather than over the shorter schedule.
- Section 1031 exchangeA section 1031 exchange lets an owner defer capital gains tax and depreciation recapture on the sale of investment real property by reinvesting the proceeds into like-kind replacement property within statutory deadlines. It is a deferral, not a forgiveness: the deferred gain carries into the basis of the new property.
A to Z
- Break-even occupancy (Break-even ratio)
- Cap rate (Capitalization rate)
- Capital expenditure versus operating expense (CapEx)
- Cash-on-cash return (Cash yield)
- Cost segregation and bonus depreciation (Cost seg)
- Debt service coverage ratio (DSCR)
- Debt yield
- Depreciation (Cost recovery)
- Depreciation recapture (Unrecaptured section 1250 gain)
- Distribution waterfall (Waterfall)
- Economic versus physical occupancy (Economic occupancy)
- Effective gross income (EGI)
- Equity multiple (EM)
- Expense stop and base year (Base year stop)
- Going-in versus exit cap rate (Terminal cap rate)
- GP catch-up (Catch-up)
- Gross potential rent (GPR)
- Interest-only period (IO period)
- Internal rate of return (IRR)
- Lease rollover (Rollover)
- Loan constant (Mortgage constant)
- Loan sizing (Debt sizing)
- Loan to cost (LTC)
- Loan to value (LTV)
- Loss to lease (LTL)
- Net operating income (NOI)
- Operating expense ratio (OER)
- Other income (Ancillary income)
- Percentage rent (Overage rent)
- Preferred return (Pref)
- Promote (Carried interest)
- Rent roll
- Replacement reserves (Reserves for replacement)
- Section 1031 exchange (1031 exchange)
- T-12 (Trailing twelve)
- Tenant improvements and leasing commissions (TI and LC)
- Triple net and expense recoveries (NNN)
- Weighted average lease term (WALT)
- Yield maintenance and defeasance (Prepayment penalty)
- Yield on cost (YOC)
Keep reading
Put the vocabulary to work
Drop in an offering memorandum and a rent roll.