I can learn almost everything I need to know about a small multifamily property from two documents: the rent roll and the T12. That’s the core of how I analyze a deal before I ever fall in love with it. If you’re serious about small multifamily real estate investing, the skill that protects you isn’t finding deals — it’s reading them. Here’s the framework I use, from the deal type down to the lease audit.
Start with the deal type, not the building
Before you analyze the numbers, know what kind of deal you’re looking at. There are three:
- Value-add — you create value through improvements. Inside this bucket are sub-strategies: a distressed property, a full rehab, or the light BRRRR strategy I run.
- Stabilized — already performing, less lift, lower upside.
- Heavy reposition — the biggest transformation, the most risk.
Your buy box should name the deal type you actually want. “Send me a deal” gets you noise. “Send me a value-add, light-BRRRR 6-to-12-unit in these submarkets” gets you something you can analyze.
What “light BRRRR” means for analysis
BRRRR stands for Buy, Rehab, Rent, Refinance, Repeat. You buy a building below its stabilized value, improve it, raise the rents to market, refinance once it performs, and pull your capital back out to do the next deal.
“Light” is the part that matters for how you analyze. I’m not chasing gut-renovation, down-to-the-studs projects. I’m underwriting buildings where modest, controlled improvements — cosmetic unit turns, bringing under-market rents up, trimming expenses — move the income enough to force value. So when I read a deal, I’m not asking “what is this worth today?” as much as “what can I realistically force it to be worth, and what will that cost?” That question is the whole analysis.
If you want the full buying sequence that surrounds this analysis, I lay it out in the full 7-step buying process.
The two documents that tell you everything
When a deal is presented to you, you should receive a rent roll and a T12 (trailing twelve months of financials), and an offering memorandum if it’s a listed deal. If there’s no OM, the rent roll and T12 are enough to make an offer.
- The rent roll shows you who lives where and what they pay.
- The T12 shows you how the property has actually performed over the last year.
These two are how you decide whether to make an offer and at what price. Everything downstream — your LOI price, your due diligence, your financing — flows from reading them correctly.
Want a structured way to run those numbers? Drop them into my Deal Analyzer.
Underwrite to forced value, not the seller’s story
The reason deal type matters for analysis is that your strategy determines where the upside comes from. In a value-add deal, you’re underwriting to the value you can force — pushing income up and expenses down — rather than paying for performance that already exists. The numbers you’re handed are a starting expectation, not a fact.
The deal math, worked
Here’s the math that turns that idea into a number. The metric that drives everything is net operating income (NOI): your income after operating expenses, but before your loan payment. Cap rate is NOI divided by price, and rearranged, value equals NOI divided by cap rate. Force NOI up and you force value up.
Let me run it on the kind of 7-unit deal I’d write an LOI on at $660,000. The price is from a real LOI of mine; the rents and expenses below are illustrative round numbers to show the mechanics, not actual figures from that building.
As-is:
- 7 units at roughly $800/month = $67,200 a year in gross potential rent
- Less ~5% vacancy and credit loss = about $63,840 effective income
- Less operating expenses (a ~50% expense ratio is a common starting rule of thumb) ≈ $31,900 NOI
- At a $660,000 price, that’s roughly a 4.8% cap rate
After a light value-add:
- Turn units and bring rents to about $950/month = $79,800 a year
- Less ~5% vacancy = about $75,800 effective income
- Less expenses of roughly $33,000 ≈ $42,800 NOI
That extra ~$11,000 of NOI isn’t just more cash flow. At a 6% market cap rate, $42,800 of NOI supports a value around $713,000 — above what you paid. That spread is what makes the refinance work and lets you recycle capital into the next deal. When I analyze, this is what I’m solving for: the gap between the income I’m buying and the income I can force.
If the NOI and cap-rate mechanics are new to you, this primer on net operating income is a clean reference.
The point holds even without the spreadsheet: you analyze to the value you can create, then you verify the inputs are real. Which brings us to the audit.
The rent roll and lease audit
Due diligence is your opportunity to inspect what you expect. The single highest-value piece of that is auditing the rent roll against the actual leases.
Here’s exactly how a discrepancy shows up. The rent roll says Mrs. Jones is in unit 1 paying $1,000 a month. You request the leases — and you should always request them — and her lease says she’s in unit 2 paying $800. That’s a $200 gap, in the wrong unit, on one tenant.
Is the seller being dishonest? Usually not. Small multifamily is full of longtime owners who simply aren’t organized. But find several of these and the deal’s income picture changes materially. A handful of $200 gaps across a building moves your real income well below what you were sold.
When you find them, you have two moves:
- Renegotiate — my first choice, because I want to make deals.
- Walk away — if the gap is too big to fix at the price.
This is why you analyze before you commit emotionally and financially. The audit either confirms your offer or saves you from a bad one.
Physical analysis runs alongside the financial analysis
Analysis isn’t only spreadsheets. During due diligence you’re also assessing the physical asset: walking every unit and bringing in the experts your buy box calls for — a roofing expert, a plumbing expert, a foundation expert. Physical problems are financial problems in disguise; a roof or a foundation issue resets your numbers as surely as a rent discrepancy does.
And remember the bank is analyzing in parallel. Its third-party reports — appraisal, environmental, and sometimes a Property Condition Assessment — can surface immediate repairs that change your capital needs. On one Fannie Mae deal, the lender required repairs I hadn’t planned for and held back escrow to cover them. That’s part of the analysis too: what the lender will make you do is part of the real cost.
A clean way to think about it
When I analyze a small multifamily property, I’m really asking three questions:
- What kind of deal is this? (Value-add, stabilized, heavy reposition.)
- Do the documents support the story? (Rent roll and T12, then leases.)
- What changes once I inspect what I expect? (Renegotiate or walk.)
Do that consistently and you’ll pass on deals that look great and write offers on deals that actually are.
Put a process behind your numbers
Reading a rent roll and T12 is a learnable skill, and it’s the one that keeps you from overpaying. If you want a structured way to run a deal, get the Deal Analyzer, and grab my book The Small Multifamily BRRRR Method free for subscribers to go deeper on LOIs, due diligence, and what to look for.
Frequently asked questions
How do you calculate value on a multifamily property?
Value is driven by net operating income (NOI) — income after operating expenses but before the loan payment — divided by the market cap rate. Raise NOI by increasing rents or cutting expenses and the value rises with it. That’s the engine behind value-add: you underwrite to the income you can force, not the income the seller currently shows.
What documents do I need to analyze a multifamily deal?
At minimum, the rent roll and the T12, the trailing twelve months of financials. If it’s a listed deal you may also get an offering memorandum. From the rent roll and T12 alone you can decide whether to make an offer and at what price, then verify everything with the leases during due diligence.
What is a rent roll audit?
It’s comparing the rent roll against the actual signed leases. You’re confirming each tenant’s unit and rent. It’s common to find a tenant listed in one unit at one rate while their lease shows a different unit or a lower rent. Several discrepancies can materially change the deal’s income and justify renegotiating.
What are the three types of multifamily deals?
Value-add, stabilized, and heavy reposition. Value-add has sub-strategies of its own, including distressed properties, full rehabs, and the light BRRRR approach. Knowing which type you want sharpens your buy box and tells you where the return is supposed to come from before you analyze a single number.
Should I renegotiate or walk away when due diligence finds problems?
Look to renegotiate first — the goal is to make deals. If the audit reveals income or condition issues too large to solve at the agreed price, walking away is the disciplined choice. Due diligence exists precisely so you can do one or the other before you’re locked in.
