Multifamily Cap Rates: What Separates Good Deals From Bad

The cap rate is the first number anyone quotes when a multifamily deal comes up. It is also the one that fools more buyers than almost any other.

The reason is simple. It is easy to calculate, easy to compare and easy to put in a spreadsheet. It feels like an answer. But a cap rate only tells you what you are paying for one year of income, and nothing about whether that income is real, whether it will last or what it will cost you to keep it.

Here is how to use multifamily cap rates the right way: as a starting point, and then to look hard at everything they leave out. I will walk through where the number misleads, what to check instead, and the questions that separate a good deal from a bad one before you have spent a dollar on legal fees.

What Multifamily Cap Rates Measure

A cap rate is net operating income (NOI) divided by the purchase price or value.

Cap rate = NOI ÷ price

If a building produces $500,000 of NOI and sells for $10 million, the cap rate is 5 percent. Flip it around and you get value: NOI divided by the cap rate. At a 5 percent cap rate, $500,000 of NOI is worth $10 million. At 6 percent, the same NOI is worth about $8.33 million.

That is a useful way to think about price. It is not, on its own, a measure of investment quality.

Picture two buildings that both trade at a 5 percent cap rate. One is recently renovated, professionally managed, with steady rent growth and low turnover. The other is dated, short on maintenance, with high vacancy and half its residents on month-to-month leases. The cap rate is identical. The investments are not close.

Why a Cap Rate Can Mislead You

It trusts the NOI

A cap rate is only as good as the NOI behind it. In an offering memo that NOI is the seller's version, and sellers show their buildings in the best light. That is sales, not villainy, but it means your first job is to rebuild the NOI yourself.

The usual places the number gets flattered:

• Vacancy shown at a point in time rather than as a trailing average of collected rent
• "One-time" expenses that actually come around every few years
• An owner who does maintenance or management personally, so no cost appears
• A management fee below what a professional manager would charge
• Pro forma rents that assume every unit hits market rent right away

Say a seller marketed a building at a 6.2 percent cap rate on $620,000 of NOI and a $10 million price. Here is how a careful buyer might normalize it. These numbers are an example, not a real deal.

At the same $10 million price, that is a 4.35 percent cap rate, not 6.2. Same building, same price, a very different deal. This kind of rebuild is the heart of a multifamily due diligence checklist, and it is why we ask for T12 financials, rent rolls, lease files and bank statements before we trust anything.

It ignores your debt

A cap rate is an unlevered number. It describes what the building yields as if you paid all cash. Almost nobody does. Once you add a loan, your return depends on the loan terms as much as on the building.

Consider the same $10 million building with $500,000 of NOI (a 5 percent cap rate) under two financing setups. Again, this is simplified math to show the idea.

Same cap rate. The second structure more than doubles the cash-on-cash return. It also carries more risk: more debt, an interest-only period that eventually ends, and thinner room if income dips. That trade-off is exactly what a cap rate cannot show you.

Rates matter in a second way too. When borrowing costs rise, buyers need higher returns to make deals work, so cap rates tend to rise and prices tend to fall. The Federal Reserve raised short-term rates sharply across 2022 and 2023, and buyers who had underwritten cheap, short-term floating debt found their numbers no longer worked. A building that cash-flows with 4 percent debt may not cash-flow at 7.

A cap rate tells you what you are buying. Cash-on-cash tells you what you are earning. They are different questions.

It does not know what the building needs

Most buyers get burned by capital needs they did not price in. Say you buy a $7.5 million building at a 5.8 percent cap rate, which is $435,000 of NOI. In due diligence you find $645,000 of work needed soon: roof, HVAC, plumbing and paving. Your real cost is $8.145 million, and your effective yield is about 5.3 percent, not 5.8. That is a hypothetical, but the pattern is real.

Deferred maintenance means repairs that were put off, often for years, by an owner squeezing short-term cash flow. If the seller's financials show strong NOI with almost no repair spending, that should make you suspicious, not happy.

Good capital analysis includes:

• A physical needs assessment by someone who actually walks the property
• A multi-year capital plan with expected life for each major system
• An annual reserve contribution, sized from the plan (see our piece on replacement reserves)
• A split between capital that keeps the building running and capital that grows NOI

If you skip that step, you think you are buying a stable, cash-flowing asset when you may be buying a project.

The Part No Cap Rate Captures: How the Building Is Run

Two buildings with the same NOI today can have very different NOI in three years, and the difference is usually the operator.

A cap rate is silent on questions like these:

• How long do units sit empty between residents, and why?
• What share of residents renew, and are rents on renewals tracking the market?
• Are expenses controlled by plan or by luck?
• Is anyone watching the budget against actuals every month?
• Does the on-site team respond fast enough that small repairs stay small?

A well-run building turns income into durable NOI. A poorly run one leaks it. When you underwrite, give yourself credit for what a strong operator can do, and give yourself no credit for what a weak one claims it will do. If you plan to change management, price that change honestly, including the transition months where things often get a little worse before they get better.

This is also why the same price can be a bargain to one buyer and a mistake to another. Buyers with a real operating plan and the team to execute it see value the cap rate does not show. Buyers who just see a number tend to pay for the upside and then discover how hard it is to deliver.

Who Is on the Other Side of the Comp

Cap rates on sales comps feel like hard data. They are not. Every one of them was a negotiation between two people with their own reasons.

Ask what the buyer was thinking. Some of the common motivations:

• A deadline. A buyer in a 1031 exchange has 45 days to identify replacement property and 180 days to close, according to the IRS. Time pressure can push a price higher and a cap rate lower. Confirm the details with a qualified intermediary or tax adviser.
• Capital to deploy. Funds with money to place sometimes accept lower returns to meet an allocation.
• Market entry. A new investor may overpay to get a first foothold.
• Tax benefits. Buyers focused on depreciation may accept a thinner cash yield.
• Portfolio assembly. Someone filling a gap in a larger holding may pay up for a specific property.

None of that means the comp is wrong. It means one comp at a low cap rate might be a motivated buyer, not the market. Look at a range of sales, not a single headline.

The Outside Forces You Cannot Control

Multifamily cap rates move with things that have nothing to do with your building:

• Interest rates and capital availability. Cheap, plentiful debt tends to compress cap rates. Expensive or scarce debt tends to widen them.
• Investor sentiment. When everyone wants the asset class, prices climb.
• Local fundamentals. Job growth, supply in the pipeline and regulation all feed what buyers will pay.
• Cycle timing. A building bought at the top of a cycle with the assumption of cheap refinancing can be in trouble when rates move.

The point is not to predict these. It is to avoid underwriting a deal that only works if none of them change. Stress your numbers: what happens if the exit cap rate is higher than the entry rate, if rents grow slower than planned, if the refinance comes in at a higher rate?

What to Look at Alongside Cap Rates

No single metric is enough. These are the ones we pair with a cap rate.

Cash-on-cash return

Annual pre-tax cash flow divided by the cash you put in (down payment plus closing costs and any upfront capital). It tells you what you earn on your own money in the early years, after debt. It is a snapshot, so use it to see whether the deal breathes in year one, not as a forecast of your outcome.

Debt service coverage

DSCR compares NOI to annual debt payments. Lenders set their own minimums, and a thin coverage ratio leaves little room for a bad quarter or a higher refinance rate. A deal that works only if nothing goes wrong is not a deal.

Internal rate of return (IRR)

IRR looks across the whole hold period: cash flow each year, capital you add, refinance proceeds and the sale at the end, all adjusted for the time value of money. A building with a modest starting cap rate can produce a strong IRR if the business plan raises NOI and the exit is sound. A building with a pretty cap rate in a declining market can produce a weak one. The cap rate tells you where you start. IRR is a better guide to where you might end up, though it depends entirely on your assumptions, so test them.

Price per unit and per square foot

These cut through the income story and show what the market is paying for the physical asset. If similar buildings are trading in a tight range per unit and yours is far below, either you have found value or something is wrong. Find out which before you celebrate. Use recent, local, comparable sales for this, not national averages.

Sustainable NOI

This is the one that matters most. Not the pro forma, not what you hope to achieve, but what the building can reliably collect and keep after the real costs of running it. Our piece on the operating expense ratio shows how much each point of expense is worth in value, which is a good way to test whether the seller's expense line is honest.

Going-In Versus Exit: The Cap Rate You Will Actually Sell At

Most conversations about multifamily cap rates focus on the rate you pay going in. The one that decides your outcome is the rate a buyer will use when you sell.

Say you buy at a 5 percent cap rate, raise NOI from $500,000 to $600,000 over five years and sell. If the market has not changed, you sell at $12 million. If buyers now want 6 percent, the same $600,000 of NOI is worth $10 million. You did the hard operating work and the exit still gave back $2 million. That is why careful underwriters assume the exit cap rate is higher than the entry rate, often by a meaningful margin, and see whether the deal still works. If it only works with a flat or lower exit rate, you are betting on the market, not on your plan.

The reverse is also true. A deal that still pencils with a conservative exit leaves you room to be pleasantly surprised.

Value-Add Changes the Math

A building bought at a low in-place cap rate can still be a good deal when the plan is to raise NOI. The in-place cap rate describes the building as it is today. A value-add buyer is paying for what it can become: better pricing, fewer vacant days, billed-back utilities, tighter expenses and, in some cases, renovated units that command higher rent.

The risk is in the word "can." A plan is a forecast, not income. So the discipline is to keep the two views apart:

• In-place cap rate: what the building earns today, on verified numbers.
• Stabilized cap rate on cost: what it earns after the plan works, divided by the price plus all the money you put in.

If the stabilized return on your total cost does not clearly beat the in-place cap rate on a comparable stabilized building, you have taken on execution risk without being paid for it. For the operating side of that plan, our guide on how to increase NOI walks through where the realistic gains are.

Reading Local Cap Rates Without Fooling Yourself

A few habits keep you honest when you are looking at a market like Reno or anywhere else.

• Use sold comps, not asking cap rates. Listings show what sellers hope for. Closed sales show what buyers paid.
• Match the comp. Age, size, condition, unit mix and location all move the number. A cap rate on a newer, larger building does not transfer to an older small one.
• Check what was in the NOI. If you can find out whether a comp's quoted rate used in-place or pro forma income, do. They are very different numbers.
• Look at the trend, not one data point. Brokerage reports and lender quotes tell you which direction pricing is moving. Use them as context, and verify with your own broker and lender.
• Stay humble about averages. Regional or national cap rate figures are good for general context. They are poor stand-ins for a specific building on a specific street.

A Short Checklist Before You Trust a Cap Rate

1. Rebuild the NOI from trailing twelve-month financials, a current rent roll and bank statements.
2. Replace pro forma assumptions with in-place numbers, and treat upside as upside, not as a base case.
3. Add a market management fee, realistic vacancy and an annual reserve.
4. Get a physical needs assessment and price the capital plan into your total cost.
5. Run the deal with your actual financing, and stress the rate, the exit cap rate and rent growth.
6. Ask why the comps sold at their cap rates, not just what the rate was.

If you do only one thing from that list, do the first. Almost every bad deal we see gets a lot worse the moment someone rebuilds the income from the bank statements instead of the brochure. It takes a few hours, and it is the cheapest insurance in the whole process.

So What Is a Good Multifamily Cap Rate?

There is no magic number. A good cap rate is one that holds up after you have normalized the income, priced the capital, applied your actual debt and stress-tested the exit. A low one on a strong asset in a market you understand can be a great deal. A high one on a building with hidden problems can be a trap.

The cap rate is where the conversation starts. If your whole underwriting is "the cap rate looks good," you are guessing with a spreadsheet. If it is the first of six checks, you are doing real analysis, and that is what separates the deals that make money from the ones that only look like they will.

If you want a second opinion on a deal you are looking at, our financial modeling team builds the full picture, not just the headline number.