How to Buy an Apartment Building: A 12-Step Guide

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By Erin Cogswell Updated March 9, 2026
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Edited by Steve Nicastro

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Most first-time real estate investors initially consider purchasing a single-family home to rent out. However, investing in an apartment building can offer more diversified income streams and provide a stable cash flow.

Buying an apartment complex is not a beginner-friendly transaction — but it's one of the most powerful ways to build lasting wealth through real estate. Most first-time apartment investors come in one of two groups: people who already own a rental or two and want to scale, or people who've never invested at all and are trying to figure out if this is even realistic. 

Both groups tend to underestimate the same things: How much capital is actually required upfront, how different commercial underwriting is from residential, and how much can go wrong between letter of intent and close.

Investing in an apartment building offers real advantages over single-family rentals. With multiple rental units under one roof, you reduce the risk of total vacancy — it's unlikely that all units will be vacant simultaneously. Managing several units in a single location is also more cost effective, potentially increasing your profit margins. Investors often target capitalization (cap) rates of around 5–6% for apartment complexes.[1]

In today's market, multifamily complexes are particularly appealing. Roughly 57% of individuals and 65% of households now reside in residential complexes comprising two or more units.[2]

This guide walks through all 12 steps of buying an apartment complex. Let's start with what this actually costs.

Of course, as with any real estate investment, there’s a learning curve involved with selecting and purchasing your first apartment building. This guide takes you through the process step-by-step, providing the information you need to make an informed investment.

What does it actually cost to buy an apartment complex?

Here's a realistic breakdown before you commit to this plan.

Down payment: Expect 25–30% of the purchase price for conventional commercial financing.[3] On a $1 million building, that's $200,000–$300,000 out of pocket before closing costs.

Closing costs: These costs are typically 2–5% of the purchase price, covering appraisal, title insurance, legal fees, and lender origination fees.

Building appraisal: Commercial appraisals for apartment complexes typically run $2,000–$5,000 depending on size and market, with the average around $2,250.[4]

Inspection: Most inspectors charge a base price plus per-unit fees to inspect a complex. A building with five to eight units might cost $125 per unit, while one with 25-plus units might cost $75 per unit. Factor in specialists for mold, radon, or asbestos if the property warrants it.

Reserves: Most lenders require 6 months of operating expenses held in reserve. On a 10-unit building generating $10,000/month in rent, that could mean $30,000–$60,000 in reserves you can't touch at closing.

Property management (ongoing): Property managers typically charge 8–12% of monthly rent collected. On $10,000/month, that's $800–$1,200 per month before you've paid the mortgage.

The bottom line: Most investors need $100,000–$500,000 or more to realistically close on their first apartment complex, depending on market and building size. "If the initial investment feels too daunting, starting with smaller multi-family units or even single-family rentals can be a strategic stepping stone," said Brett Johnson, owner of New Era Home Buyers.

Buying an apartment complex in 12 steps

Apartment complexes can be a good way for beginners to build a robust real estate portfolio. Consistent rental income and property appreciation can kickstart a lucrative investment journey.

“The key is to start with a property that matches your financial capacity and risk tolerance,” said Johnson.

1. Set your goals

Before searching for a property, identify your investment goals. Do you aim for a specific monthly income or a set occupancy rate?

These goals will guide your property purchase decisions. Outline your financial objectives and work backward to determine how much income you'll need to meet them. Decide whether you'll invest for cash flow, which provides consistent passive income, or for appreciation, which can yield long-term gains.

2. Determine your budget

Assess what return on investment (ROI) and total budget you'll need to stay profitable. Compare this to your available funds for a down payment, upkeep, repairs, insurance, and property management.

The down payment could be as much as 25-30% of the purchase price.[3] Evaluate your liquid assets, such as savings and money market funds, and consider any non-liquid assets you could convert to cash.

A key metric commercial lenders look at is your net worth; many require it to be at least equal to the loan amount. If you're borrowing $500,000, most lenders want to see a net worth of at least $500,000 alongside strong liquidity.

3. Forecast your cash flow

Cash flow is the total money you bring in minus the money that flows out.

"Cash flow is the lifeblood of apartment complex investments, ensuring you can cover expenses and debts while providing a steady income," Johnson explains.

Here's a simplified example for a 10-unit building at $1,000 per unit per month in rent ($10,000 gross monthly income):

ItemMonthly estimate
Gross rent$10,000
Vacancy (7%)-$700
Property management (10%)-$1,000
Insurance-$400
Property taxes-$800
Maintenance/repairs-$500
CapEx reserve (roof, HVAC, etc.)-$500
Net operating income (NOI)$6,100
Mortgage payment (est. $600k loan, 7%)-$3,990
Monthly cash flow~$2,110

Use a rental property calculator to model deals and estimate your cash flow. If your numbers don't make sense at your purchase price, the deal isn't worth pursuing — no matter how much you like the building.

4. Choose a market

The location of any apartment complex significantly impacts its profitability. Seamus Nally, CEO of TurboTenant, recommends paying attention to the future of the location.

“You don’t want large gaps between tenants. Otherwise, your profits will plummet,” he said. “Look for a property in an area that's growing and is projected to continue being popular for residents.”

Consider other cities or states if your local market is oversaturated or slow-growing. Connect with local investment real estate agents, property managers, or lenders to research the area, considering factors like job growth, wages, population growth, and supply and demand.

5. Get pre-approved

A mortgage pre-approval is an offer — not a commitment — to lend you a certain amount of money. It typically requires an application and credit check. You’ll also need to provide recent pay stubs, bank statements, W-2 statements, tax returns for the last two years, and your down payment amount.

Commercial lending for apartment complexes works differently than residential mortgages. Lenders evaluate the property's income (net operating income, or NOI, and cap rate) as heavily as your personal financials. Talk to a few lenders — ideally including a community bank, a commercial lender, and potentially a government agency lender (HUD/FHA has multifamily programs for 5+ unit buildings) — to compare their products, rates, and terms. Get pre-approved by at least two lenders so you have detailed quotes to compare once you find your property.

» See how long it takes to get pre-approved for a mortgage

6. Search for apartment complexes

Networking with local brokers and real estate agents is your best bet for finding an apartment complex. They can help you find both on-market and off-market properties.

An on-market property is listed publicly and advertised widely online. Off-market properties are confidential and often require exclusive access.

An agent can help you find properties on the multiple listing service (MLS) and through their vast network of property owners. LoopNet and other commercial real estate websites can also be helpful. Apps like DealMachine list distressed properties and motivated sellers.

7. Make offers

Once you find a complex, it’s time to determine your offer price. Work with your agent to use a comparative market analysis (CMA) report to see how much similar properties have sold for.

“I base my analysis on key factors, including the property’s NOI, cap rate, and potential for value-add improvements,” said Johnson.

Consider comparable sales data, rent analysis, market trends, and a thorough physical inspection. Have your budget set so you can negotiate without compromising your ROI. Be persistent and work to develop a rapport with the seller to understand their motivations.

Red flags to watch for when evaluating a deal

Most deals look fine on paper. Here's what experienced investors check before going under contract:

  • Inflated rent rolls. Sellers sometimes show rent rolls with above-market rents about to expire, or include scheduled rents that tenants aren't actually paying. Always verify against actual bank deposits, not just lease agreements.
  • Deferred maintenance hidden in inspection reports. A roof that "has 3 years left" and an HVAC system installed in 2005 are multi-thousand–-dollar problems waiting to happen. Price them into your offer before you commit.
  • A lLow vacancy rate that won't hold. If the seller is showing 97% occupancy in a market with 15% average vacancy, find out why — and get comfortable with the realistic occupancy number before you model your returns.
  • Expense ratios that look too low. For apartment buildings, operating expenses typically run 35–50% of gross income. If a seller's financials show expenses of 20%, they're either deferring maintenance that you'll inherit or the numbers are incomplete.
  • Class C properties in declining markets. High cap rates look attractive until you're dealing with chronic tenant turnover, non-payment, and damage deposits that don't cover the cost of repairs.

8. Conduct inspections

A property inspection will reveal any maintenance issues or damage that could otherwise lead to unexpected expenses. You can then use the inspection report to negotiate repairs or price adjustments with the seller.

An inspector will typically set a base price and a price per unit that depends on the size of the building. For instance, a building with five to eight units might cost $125 each, while one with 25-plus units might cost $75 per unit.

A standard inspection covers essential systems like heating, air systems, plumbing, and electrical — but not hazards like mold, radon, or asbestos. For older buildings or those in areas with known environmental concerns, budget for specialists in those areas. Don't skip the specialized inspections to save money; these issues can produce the biggest post-close surprises.

9. Choose a property manager

For a large apartment complex, it's almost impossible to handle all the management-related tasks alone. An experienced property manager knows the technical and legal regulations you and your building must comply with. Property management fees typically run 8–12% of collected rent, though this varies by market.[4]

"Look for a property manager with a great track record — someone who has proven to be exactly what other investors need," says TurboTenant’s Nally. "It's worth spending a little more on a property manager you can fully trust, especially if your real estate knowledge is limited."

Review candidates’ references, experience, reviews, and fees as you interview them. Tour other properties they manage and speak to their tenants if possible.

10. Lock in financing

Secure your financing with one of the lenders who issued your pre-approval. Compare rates, terms, and conditions of your final loan offers carefully. The difference between a 6.75% and 7.25% rate on a $600,000 loan is nearly $200/month — a significant figure over a 25-year amortization.

The loan underwriter will check your identity, credit history, income, investments, and debts. You may also need a building appraisal, which is $500 to $1,000 for smaller complexes.[5]

11. Close the deal

The only thing left is to review and sign all the paperwork, including the purchase agreement and loan documents. Before finalizing the purchase, consult experts to address any remaining legal and financial needs.

Once you get the green light, it’s time to celebrate!

12. Grow your real estate investing portfolio

Use your first investment property to launch your portfolio. Monitor your investment and consider improvements to increase the building’s value.

The equity from your investment can enable you to secure financing for your next property. Continue growing your network of investors and agents for leads on future properties.

You could also use a 1031 exchange to “trade” your current property for one of equal or greater value. Any capital gain you incur will pass on to the next property, so you won’t have to pay taxes until you sell the replacement property.

Is buying an apartment complex a good investment? Pros and cons

Pros

  • High earning potential
  • Reliable income stream
  • Appreciating asset

Cons

  • Big upfront investment
  • Higher turnover rate

Investing in an apartment complex offers high earning potential and a reliable income stream. Renting to multiple families can boost your income and cover expenses, while the property tends to appreciate over time, often resulting in a profitable sale after a few years.

However, it also requires a significant initial investment, making portfolio diversification more challenging. Apartments tend to have higher tenant turnover rates than single-family homes, and the down payment for an apartment complex is typically much higher, which can be a substantial financial commitment.

“If the initial investment feels too daunting, starting with smaller multi-family units or even single-family rentals can be a strategic stepping stone,” Johnson said.

How do you make money owning an apartment complex?

Owning an apartment complex provides returns in several ways. In the short term, rental income offers a dependable cash flow. In the long term, property appreciation can lead to substantial profits if you decide to sell.

Apartments also offer significant financial leverage. For example, borrowing $2 million at 4% and achieving a 6% cap rate allows you to profit from the interest rate difference.

Additionally, tax incentives such as deductions for mortgage interest and depreciation can increase your savings. You may also be able to deduct expenses like travel, utilities, and other operational costs.

According to Johnson, apartment building cap rates typically range from 4% to 7%. A cap rate calculator can help you estimate your potential returns more accurately.

Related reading

FAQ

What credit score do I need to buy an apartment complex?


Commercial lenders typically want a credit score of 680 or higher, though requirements vary by lender and loan program. More important than your credit score is your net worth (many lenders want it to be at least equal to the loan amount), your liquidity, and your track record as an investor.

Is a 5-cap apartment building a good deal?


It depends entirely on the market. A 5% cap rate can be reasonable in a major metro area where appreciation is strong and vacancy is low. In a secondary market with flat population growth, you'd want a 7–8% cap rate to compensate for the additional risk. Cap rate is only part of the story — you also need to evaluate the local rent trajectory and your cost of financing.

Can I use an FHA loan to buy an apartment complex?


Yes, if you're buying a property with 2–4 units and intend to live in one of them. FHA loans for owner-occupants allow down payments as low as 3.5% on properties up to fourplexes. Buildings with five or more units require commercial financing, not residential mortgages.

How many units do I need to hire a property manager?


There's no hard rule, but most investors find that managing more than 4–6 units solo is unsustainable unless it's their full-time job. For anything 10 units or more, a professional property manager is almost always worth the 8–12% management fee.

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