A working glossary for GPs, acquisitions teams, brokers, and analysts who need to understand the deal behind the language.
Commercial real estate has no shortage of shorthand. A broker gives pricing guidance. The OM shows a going-in cap. The debt quote is constrained by debt yield. The value-add case depends on loss to lease. Every phrase sounds precise. Not every phrase means what a buyer first assumes.
The vocabulary matters because each term carries an underwriting decision. Confuse physical occupancy with economic occupancy and you can miss a collection problem. Treat pricing guidance as a seller minimum and you can bid against yourself. Accept a renovation premium without checking net effective rent and you can overstate the value-add case before the first unit turns.
This guide covers 50 terms that come up repeatedly in U.S. multifamily acquisitions. It is not an academic dictionary. It is a practical translation of what the term means, how it is used in a transaction, and what a buyer should verify before relying on it.
Deal process and broker language
The first group of terms governs how a property reaches the market, how bids are compared, and when a buyer's capital is actually at risk.
1. Offering Memorandum (OM)
The offering memorandum is the broker's primary marketing package. It usually combines property details, photos, market positioning, selected financials, and the proposed investment story.
An OM is useful, but it is not diligence. Treat every material claim as a lead to verify against the rent roll, T-12, leases, tax records, and third-party reports. The cleaner the presentation, the easier it is to forget that the document was built to sell the property.
2. Pricing Guidance
Pricing guidance is the price, range, or valuation level the broker signals the seller wants the market to consider. It may be expressed as a total price, price per unit, or cap rate.
Guidance is an anchor, not necessarily the seller's minimum. Underwrite the property independently, then compare your value to the stated range. If the broker only provides a verbal "whisper price," document who gave it, when, and what financial period supports it.
3. Call for Offers (CFO)
A call for offers is a formal deadline for initial bids. The broker will usually request a price, deposit structure, diligence period, financing plan, closing timeline, and information about the buyer's experience and capital.
The seller is comparing a package, not just a number. A high price with weak financing and a long diligence period may lose to a slightly lower offer with clearer execution.
4. Best and Final (BAFO)
Best and final is a later bidding round in which selected buyers are asked to submit their strongest complete offer. It is often the last structured step before a buyer is selected.
The phrase can create pressure to stretch. Before revising, identify what the seller actually values. Price may matter most, but hard money, a shorter diligence period, a credible debt plan, and a firm closing date can change the ranking.
5. Letter of Intent (LOI)
An LOI summarizes the proposed business terms before the definitive purchase agreement. It commonly covers price, deposits, diligence, financing, closing, access, and major assumptions.
Most purchase terms in an LOI are described as non-binding, but confidentiality, exclusivity, access, or expense provisions may be binding. The exact effect depends on the document and applicable law, so the language matters more than the label.
6. Purchase and Sale Agreement (PSA)
The PSA is the definitive contract governing the acquisition. It establishes the purchase price, deposit deadlines, diligence rights, representations, title process, closing conditions, remedies, and allocation of risk.
Once the PSA is signed, the underwriting timeline becomes contractual. Every critical date should appear in the deal calendar, including deposit funding, diligence expiration, title objections, financing milestones, and closing.
7. Earnest Money Deposit (EMD)
The earnest money deposit is cash posted by the buyer to support its contractual commitment. The PSA determines when the deposit is refundable, when it becomes non-refundable, and how it is applied at closing.
"Soft" money is generally refundable during a stated contingency period. "Hard" money is at risk except for limited contractual outs. A large deposit may strengthen an offer, but it also increases the cost of a failed closing.
8. Certainty of Close
Certainty of close is the seller's confidence that a buyer will close on time at the agreed economics. It is one of the most important terms in a competitive process because the highest bid is not always the best bid.
Buyers establish certainty with proof of funds, clear investment authority, a credible debt plan, realistic diligence, meaningful deposits, and a track record of closing without unnecessary retrades.
Valuation and return metrics
These terms turn property income into value and projected cash flow into an investment return. Small changes in definitions can produce large changes in the answer.
9. Capitalization Rate (Cap Rate)
The cap rate is annual net operating income divided by property value or purchase price.
Cap rate = NOI / Value
It is a compact way to compare current property earnings with price, but it is not a complete return measure. It does not capture debt, future rent growth, capital spending, taxes, or sale proceeds. Always ask which NOI period and adjustments produced the quoted cap rate.
10. Going-In Cap Rate
The going-in cap rate is the cap rate at acquisition, usually based on current or first-year underwritten NOI.
The phrase sounds standardized, but the numerator often is not. One party may use trailing NOI, another may use forward year-one NOI, and a third may use a broker-adjusted figure. Label the NOI before comparing cap rates across deals.
11. Exit Cap Rate
The exit cap rate, also called the terminal cap, is applied to forward NOI to estimate the property's value at the end of the hold.
Exit value = Forward NOI / Exit cap rate
Because terminal value often drives a large share of modeled returns, a small change in the exit cap can materially change IRR and equity multiple. Test cap-rate expansion rather than assuming the market will be more generous when you sell.
12. Price Per Unit (PPU)
Price per unit is the purchase price divided by the number of apartment units. It is one of the most common comparison metrics in multifamily brokerage.
PPU is useful only when the units are reasonably comparable. A property with larger floor plans, newer construction, structured parking, or commercial space may deserve a different PPU than a nearby property with the same unit count.
13. Basis
Basis is the buyer's cost in the property. Depending on context, it may mean purchase price, purchase price plus closing costs, or the all-in acquisition and renovation cost.
When someone says a deal has a "good basis," ask which basis. Purchase basis, all-in basis, tax basis, and basis per unit answer different questions.
14. Replacement Cost
Replacement cost is the estimated cost to acquire land and build a comparable property at current prices. A broker may describe an acquisition as "below replacement cost" to support downside protection or reduced risk of new competition.
The comparison should include land, hard costs, soft costs, financing, fees, and developer profit. Buying below replacement cost can be attractive, but it does not by itself prove the property is worth the purchase price.
15. Sales Comparable (Sales Comp)
A sales comp is a recent property sale used to benchmark value, cap rate, PPU, or price per square foot.
The best comp is not simply the closest sale. Normalize for transaction date, location, size, vintage, condition, unit mix, financing, and the quality of the NOI used to report the cap rate.
16. Rent Comparable (Rent Comp)
A rent comp is a competing property or lease observation used to estimate market rent.
Compare net effective rent, not just advertised face rent. Unit size, finish level, floor, view, parking, utilities, fees, lease term, and concessions can explain why two apparent comps produce different economics.
17. Yield on Cost (YOC)
Yield on cost is stabilized NOI divided by total project cost. It is commonly used for development and value-add business plans.
Yield on cost = Stabilized NOI / Total cost
The spread between yield on cost and the expected market cap rate helps show whether the business plan creates value. That spread needs to compensate for construction, lease-up, financing, and execution risk.
18. Internal Rate of Return (IRR)
IRR is the annualized discount rate that makes the net present value of projected cash flows equal zero. It accounts for both the amount and timing of cash flows.
IRR is useful for comparing investments, but it can be highly sensitive to the hold period and terminal value. Separate levered from unlevered IRR and inspect the cash flows behind the percentage.
19. Equity Multiple (EMx)
Equity multiple is total cash distributions divided by total equity invested.
Equity multiple = Total distributions / Invested equity
A 2.0x equity multiple means the investment returned two dollars for every dollar invested. It does not show how long that return took, which is why it should be read alongside IRR.
Income and operating performance
This is where broker language meets the property ledger. The definitions below determine whether the stated upside is supported by actual collections and expenses.
20. Net Operating Income (NOI)
NOI is property revenue less operating expenses, before debt service, income taxes, depreciation, and capital expenditures.
NOI drives cap-rate valuation, debt sizing, and most acquisition conversations. Rebuild it from sourced revenue and expense lines. Broker adjustments may be reasonable, but they should be visible rather than blended into the result.
21. Trailing Twelve Months (T-12)
The T-12 is an operating statement covering the most recent twelve months. It is intended to show recent actual property performance.
Check the exact period, accounting basis, missing months, unusual accruals, and one-time items. A T-12 ending in December and one ending in June can tell different stories about utilities, repairs, taxes, and concessions.
22. Trailing Three Months (T-3)
The T-3 captures the most recent three months of operations. Brokers and buyers often annualize it to estimate the current run rate.
A T-3 can reveal recent improvement that the T-12 obscures, but it can also magnify seasonality and timing noise. Use it as a trend signal, not an automatic replacement for a full operating history.
23. Rent Roll
The rent roll is the unit-level schedule of tenants, rents, lease dates, status, unit type, and often balances or recurring charges.
It is the source for in-place rent, physical occupancy, lease expiration, unit mix, and loss-to-lease analysis. The as-of date matters. A rent roll is a snapshot, and a stale snapshot can misstate both occupancy and revenue.
24. Gross Potential Rent (GPR)
GPR is the rent a property could generate if every unit were occupied for the full period at the selected rent basis.
The selected basis may be market rent, lease rent, or scheduled rent. That distinction changes vacancy, loss-to-lease, and effective gross income, so the model should state it clearly.
25. Effective Gross Income (EGI)
EGI is net rental income plus other recurring property income after vacancy and collection loss.
It is the revenue base from which operating expenses are deducted to calculate NOI. Reconcile EGI to the operating statement and, when possible, to actual collections rather than relying only on scheduled charges.
26. Physical Occupancy
Physical occupancy is occupied units divided by total rentable units.
A property can be physically occupied and still underperform financially. Residents may be delinquent, receiving concessions, or paying below-market rents. Physical occupancy answers how full the property is, not how much revenue it captures.
27. Economic Occupancy
Economic occupancy measures collected or effective rental revenue against a selected potential-rent base.
It captures the effect of vacancy, concessions, delinquency, and collection loss. Because market conventions vary, confirm both the numerator and denominator before comparing economic occupancy across properties.
28. Loss to Lease (LTL)
Loss to lease is the gap between market rent and in-place lease rent for occupied units.
It is often presented as embedded upside, but the gap is not automatically collectible. Test the market-rent evidence, lease-expiration schedule, resident retention, concessions, turnover costs, and downtime needed to capture it.
29. Concessions
Concessions are rent discounts, free-rent periods, or other incentives offered to sign or retain residents.
Concessions can make advertised rent look stronger than the actual lease economics. Underwrite the net effective rent and determine whether the concession is temporary, recurring, or necessary to maintain occupancy.
30. Net Effective Rent (NER)
Net effective rent is rent after concessions and specified adjustments, usually expressed as a monthly equivalent over the lease term.
It is the cleaner number for comparing properties with different incentives. Normalize the lease term, free-rent period, required fees, and unit attributes before treating one property as a rent comp for another.
31. Ratio Utility Billing System (RUBS)
RUBS allocates shared utility costs to residents using a formula rather than individual meters.
It is often presented as a utility-recovery opportunity. The underwriting should account for local rules, lease language, implementation timing, resident reaction, administrative cost, and actual collection performance.
Debt and capital markets
A property can support one value and a very different loan amount. These terms explain how lenders translate income, leverage, and repayment risk into proceeds.
32. Debt Service Coverage Ratio (DSCR)
DSCR is NOI divided by annual principal and interest payments.
DSCR = NOI / Annual debt service
A 1.30x DSCR means NOI is 30% greater than scheduled debt service. Lenders often size proceeds to a minimum DSCR using their own underwritten NOI, not the buyer's acquisition case.
33. Debt Yield
Debt yield is NOI divided by the loan amount.
Debt yield = NOI / Loan amount
Unlike DSCR, debt yield does not depend on interest rate or amortization. It gives the lender a direct view of property income relative to exposure and can become the binding constraint when a borrower requests more leverage.
34. Loan-to-Value (LTV)
LTV is the loan amount divided by property value.
LTV = Loan amount / Property value
Confirm whether value means purchase price, appraised value, or lender underwritten value. The lowest of those figures may control proceeds.
35. Loan-to-Cost (LTC)
LTC is the loan amount divided by total eligible project cost.
It is common in bridge, renovation, and development financing. The definition of eligible cost matters, especially when the loan includes future funding for renovations, interest, or construction.
36. Loan Constant
The loan constant is annual debt service divided by the original loan amount.
Loan constant = Annual debt service / Original loan amount
It combines the effect of interest rate and amortization into one payment-burden metric. Two loans with the same rate can have different constants if their amortization schedules differ.
37. Interest-Only (IO)
Interest-only is a period during which scheduled payments cover interest but do not reduce principal.
IO improves early cash flow and DSCR, but the principal balance remains unchanged. Model the payment increase when amortization begins and the larger payoff balance at sale or refinance.
38. Bridge Loan
A bridge loan is shorter-term financing used for acquisition, renovation, lease-up, or another transitional business plan.
Bridge debt is commonly floating rate and may include future funding, interest reserves, extension options, and performance covenants. The underwriting must address both the initial loan and the permanent-debt takeout.
39. Agency Debt
Agency debt refers to multifamily mortgage financing executed through Fannie Mae or Freddie Mac programs.
It is commonly associated with stabilized assets, longer terms, non-recourse structures, and competitive pricing. Actual proceeds depend on program eligibility, lender underwriting, DSCR, debt yield, LTV, escrows, and prepayment terms.
40. Assumable Debt
Assumable debt is existing property financing that a qualified buyer may take over, subject to lender approval and the loan documents.
Below-market assumable debt can increase buyer demand, but it may also require more equity. Model the existing balance, maturity, fees, supplemental-loan options, prepayment restrictions, and approval timeline.
41. Yield Maintenance
Yield maintenance is a prepayment charge designed to compensate a lender when a fixed-rate loan is repaid before maturity.
It can materially affect a sale or refinance. Obtain a current estimate rather than relying on a rough percentage, because the charge depends on the loan documents, remaining term, and prevailing rates.
Property strategy and execution
These labels describe where the asset sits today and how the buyer expects to create value. The adjective is never enough. The operating plan has to support it.
42. Value-Add
Value-add is a strategy to improve income or value through renovations, better operations, expense control, amenity improvements, or stronger management.
The term covers a wide range of risk. Translate it into a specific scope, cost, pace, downtime, rent premium, and stabilization timeline. If those inputs are missing, "value-add" is positioning, not a business plan.
43. Stabilized
A stabilized property operates at a sustainable occupancy, revenue, and expense level after lease-up, renovation, or disruption.
Define stabilization with measurable assumptions. Target occupancy alone is not enough. Concessions, bad debt, payroll, recurring repairs, and other income should also reflect a steady-state operation.
44. Lease-Up
Lease-up is the period in which a new or repositioned property fills vacant units and establishes recurring operations.
Underwrite it monthly. Move-ins, cancellations, concessions, renewals, marketing cost, operating ramp, and competing deliveries all affect how quickly the property reaches stabilization.
45. Mark-to-Market
Mark-to-market is the potential to move in-place rents toward supported market rents as leases renew or units turn.
It may require less capital than a renovation program, but it still carries execution risk. Review lease expirations, resident retention, legal restrictions, concessions, and the strength of the rent comps.
46. Renovation Premium
The renovation premium is the incremental rent attributed to an upgraded unit compared with a similar unrenovated unit.
Measure it on a net effective basis and match the units by type, size, location, lease date, and concession. Then compare the incremental NOI with renovation cost, downtime, and ongoing maintenance.
Due diligence and closing risk
The final terms identify issues that can change capital needs, legal use, insurance, financing, or post-closing expenses.
47. Property Condition Assessment (PCA)
A PCA is a third-party review of the property's physical condition, immediate repair needs, and expected replacement costs.
Reconcile the report with the buyer's capex plan and lender reserves. A PCA is not just a list of defects. It is a timing schedule for future capital.
48. Phase I Environmental Site Assessment (Phase I ESA)
A Phase I ESA reviews current conditions, historical uses, and records to identify recognized environmental conditions.
The result may support closing, require further investigation, or lead to Phase II testing. Check the report date, reliance rights, recommendations, and whether the lender has additional requirements.
49. Title Commitment
The title commitment states the conditions under which the title insurer will issue a policy and lists the exceptions that may remain against the property.
Review liens, easements, access, restrictions, endorsements, and required cures together with the survey. A clean-looking site can still carry title limitations that affect operations or future development.
50. Property Tax Reassessment
Property tax reassessment is the post-sale or periodic reset of assessed value that can change the tax bill.
Broker financials often show the seller's historical taxes. The buyer may inherit a materially higher expense after acquisition. Underwrite the jurisdiction's reassessment rules, timing, millage, appeal process, and any abatement expiration.
The vocabulary is the easy part
Knowing the terms helps you follow the conversation. The harder work is determining which definition was used, which period supports the number, and whether the source documents agree.
That is where underwriting quality is won or lost. A cap rate is only as reliable as its NOI. Loss to lease is only as credible as the rent comps and lease schedule. A debt quote is only as useful as the lender's adjustments and constraints. Every headline number needs a receipt.
X CRE OS turns the OM, rent roll, T-12, and supporting documents into a sourced underwriting that can be reviewed line by line. Every material input remains visible, editable, and tied back to the document it came from.
Reference note
These definitions are plain-English summaries of common U.S. multifamily practice. Usage can vary by market, firm, lender, contract, and property type. Additional reference material is available from the NAIOP Research Foundation, CRE Finance Council, Fannie Mae Multifamily, and Freddie Mac Multifamily.