How to Read an Apartment Building Offering Memorandum in Los Angeles
Important note
This article is general information current as of September 2026, not financial, legal, or investment advice. Rent control rules, permit requirements, and underwriting standards change and should be confirmed directly with the Los Angeles Housing Department, the Los Angeles Department of Building and Safety, or a qualified real estate attorney before making purchase decisions. Max Berger is a licensed real estate professional, not an attorney or financial advisor, and this article does not constitute financial, legal, or investment advice.
An offering memorandum (OM) is a marketing document the seller's broker prepares to sell the property, not an audited or regulated disclosure. The single most important skill in reading one is separating the T12 (or the income statement), the property's actual trailing twelve months of income and expenses, from the pro forma, the broker's projection of what it could earn. In Los Angeles specifically, two checks matter more than almost anywhere else: whether the pro forma's rent growth assumptions are even legal under the building's rent control status, and whether the unit count in the OM matches what the city's permit records and Certificate of Occupancy actually show.
Every apartment building you look at seriously in LA will come with an offering memorandum, a slick packet from the seller’s broker with photos, a market overview, and a set of numbers that make the deal look as good as possible. That’s not a criticism; it’s the document’s job. The problem is that most buyers read an OM the way they’d read a listing sheet, taking the numbers at face value, when it actually takes a specific kind of scrutiny to separate what the building is doing today from what the broker is projecting it could do. Before you request an OM on anything, it helps to knowwhich submarket you’re evaluating and what rent regime governs it, since that context changes how skeptically you should read the pro forma the broker hands you.
Step 1: Understand What You’re Actually Holding
An OM is not a legal disclosure document, and it isn’t reviewed by any regulator. That distinction matters more than most first-time buyers realize, because a similar-sounding document, the Private Placement Memorandum (PPM), is. A PPM is required underSEC Regulation D when a sponsor raises capital from investors to buy a property through a syndication, and it carries real legal disclosure obligations and anti-fraud liability. The OM a broker sends you when you’re buying a building outright is a different animal entirely: a sales document built to generate interest, with no obligation to be conservative and no regulator checking its assumptions. Read it the way you’d read a real estate listing description, not the way you’d read an audited financial statement.
Step 2: Start With the T12, Not the Pro Forma
Every OM includes two sets of numbers: the T12 (trailing twelve months), what the property actually collected and spent over the past year, and the pro forma, what the broker projects it could earn under a different set of assumptions. Build your initial opinion of the deal off the T12 alone.Watch for two common distortions in the T12 itself before you even get to the pro forma. First, owner-operated buildings often bury personal expenses in the P&L- a vehicle lease, a family member’s salary, personal travel- that inflate expenses and depress reported NOI, or conversely get stripped out to inflate it.Second, a single unusually low or high month, a one-time insurance payout, or an unfilled maintenance position can skew the annual total. Ask for the T12 broken out by month, not just an annual roll-up, so you can spot both.
Step 3: Check the Pro Forma’s Rent Assumptions Against What’s Actually Legal
This is the step that generic OM guides, written for national or Sunbelt markets, don’t cover, and it’s often the biggest gap between the pro forma number and reality in Los Angeles.A pro forma showing aggressive rent growth on currently occupied units only works if that growth is legally achievable. If the building is covered by the City of LA’s Rent Stabilization Ordinance, annual increases on occupied units are capped at 3% through June 2026 and a formula-based 4% ceiling after that, regardless of what the broker’s model assumes. Buildings outside RSO but inside the statewide Tenant Protection Act (AB 1482) are capped at 5% plus local CPI or 10%, whichever is lower. A pro forma projecting 15% rent growth on in-place tenants in a rent-controlled building isn’t optimistic, it’s not legally possible without turnover. Check therent control status and applicable caps for the property’s jurisdiction before you take the pro forma’s growth assumptions at face value.
T12 (Actual)
Pro Forma (Broker Projection)
Gross rental income
$312,000
$372,000
Vacancy/credit loss
$15,600 (5%)
$11,160 (3%)
Operating expenses
$124,800 (40%)
$104,160 (28%)
NOI
$171,600
$256,680
Cap rate at $3,000,000 asking price
5.7%
8.6%
Figures are illustrative, built to show how a broker’s assumptions on rent, vacancy, and expenses can compound into a materially different headline cap rate. Your actual numbers depend on the specific building.
Step 4: Verify the Unit Count Independently
The OM will state a unit count, and buyers generally take it at face value. In Los Angeles, that’s a mistake worth avoiding. A significant number of older buildings have units added without permits, and theLos Angeles Department of Building and Safety treats occupying a unit without a valid Certificate of Occupancy as a violation of the municipal code. If one or more units in the OM’s rent roll turn out to be unpermitted, you’re not just facing a compliance issue; you may be financing a smaller legal building than the one you thought you were buying, and lenders will size the loan accordingly once they find out. Pull the LADBS permit history and Certificate of Occupancy record for the address before your contingency period closes, not after.
Get a Second Read on Any OM You’re Considering
Broker-prepared numbers deserve a second look before you make an offer. Book a call and have Max Berger walk through the OM with you, line by line, before you commit to anything.
Step 5: Sanity-Check the Expense Ratio
A pro forma with an unusually low expense ratio is one of the easiest ways a broker inflates NOI without changing a single rent number. TheNational Apartment Association’s benchmarking data, produced jointly with IREM and BOMA, is a reasonable industry reference point: well-managed multifamily properties typically run expense ratios in the 35% to 50% range. A pro forma projecting expenses well below that, without a specific, documented reason, like a recent full renovation or new construction, is worth questioning line by line rather than accepting as a reasonable projection.“The OM is a starting point for a conversation, not a number you underwrite to,” said Max Berger, a Los Angeles multifamily broker who has closed more than 75 transactions across the city. “I tell buyers to build their own pro forma from the T12 up, using their own assumptions, and only then compare it to what the seller’s broker is showing. If the two numbers are close, that’s useful information. If they’re not, that gap tells you exactly where to focus due diligence.”
Step 6: Build Your Own Underwriting From There
Once you’ve separated the actual from the projected, checked the rent growth assumptions against what’s legal, and verified the unit count, the OM has done its job, getting you interested enough to dig further. From here, move into full due diligence: rent roll verification, estoppels, lease file review, and a property condition assessment. Ourmultifamily due diligence checklist walks through the rest of that process in order.
The Difference Between Reading an OM and Understanding One
Anyone can read the numbers on an OM’s cover page. Understanding what they actually mean, and what a broker’s assumptions are quietly doing to them, takes local knowledge of LA’s rent control rules and permit records. Max Berger has spent over a decade helping LA multifamily buyers separate a broker’s story from a building’s actual numbers. If you have an OM in hand and want a second opinion before you write an offer,book a call to talk through the numbers.
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An offering memorandum, or OM, is a marketing document a seller's broker prepares to present a property for sale. It typically includes property photos and description, a T12 operating statement, a pro forma projection, a rent roll, and market data. Unlike a Private Placement Memorandum used in securities offerings, an OM carries no regulatory disclosure requirements.
Start with the T12 to understand actual performance, then compare it against the pro forma to see what assumptions the broker is making about future income. Build your own underwriting from the T12 rather than accepting the pro forma at face value, and verify the rent roll and unit count independently before relying on either.
The gap between T12 and pro forma NOI, the assumptions driving that gap (rent growth, vacancy, expenses), whether the projected rent growth is legally achievable given the building's rent control status, and whether the stated unit count matches the property's actual permit history.
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Max Berger advises Los Angeles apartment building owners on sales, 1031 exchanges, and estate dispositions, with more than 75 transactions totaling over $300M closed across Northeast LA, Hollywood, and South LA.
