Buying an apartment building is a real estate transaction that requires capital, financing, and property management — not a shortcut to passive income

Purchasing an apartment building means buying a property with multiple rental units as an investment. You will need a down payment (typically 20 to 25 percent for a multi-unit property), a mortgage from a lender, proof of income and creditworthiness, and a plan for managing tenants or hiring a property manager. The process is similar to buying a single-family home but involves additional scrutiny of the building's income, expenses, and condition.

Most apartment buildings sold are small — two to four units — because larger properties require commercial lending and more complex underwriting. A four-unit building may still may have access to for a standard mortgage; a ten-unit building almost certainly will not. The size of the building you can purchase depends on your down payment, credit score, debt-to-income ratio, and the lender's appetite for multi-unit residential properties.

Key Takeaways

  • You will need 20 to 25 percent down for a multi-unit property, plus reserves equal to several months of expenses, because lenders treat apartment buildings as commercial investments.
  • The property's rental income and operating expenses are scrutinized as heavily as your personal finances — a building that loses money or has high vacancy will not may have access to for a loan.
  • A professional inspection and appraisal are essential because you are buying the building's ability to generate income, and deferred maintenance directly reduces that ability.
  • You will need either a property manager or the time and skill to handle tenant relations, maintenance coordination, and legal compliance yourself.
  • Financing terms for apartment buildings are shorter and rates higher than for single-family homes, and some lenders will not touch properties with more than a few units.

What lenders look for in an apartment building deal

A lender will evaluate the building's net operating income — the annual rent collected minus operating expenses like property taxes, insurance, maintenance, and vacancy loss. They want to see that the building generates enough income to cover the mortgage payment with a cushion. This is called the debt service coverage ratio, and most lenders require it to be at least 1.2, meaning the building's income must be 20 percent higher than the annual mortgage payment.

If the building is currently occupied, the lender will verify the actual rent roll — the list of tenants, their lease terms, and what they pay. If units are vacant or rents are below market, the lender will use a lower income figure in their calculation. A building with high turnover, problem tenants, or a history of late payments will be harder to finance or will carry a higher interest rate.

Your personal finances still matter. The lender will check your credit score, your income, and your existing debts. If you have other mortgages, car loans, or credit card balances, they reduce the amount you can borrow for the apartment building. Some lenders also require you to have cash reserves equal to six to twelve months of the building's expenses, held in the bank after closing.

The down payment and closing costs

A 20 percent down payment is standard for a two- to four-unit property financed with a conventional mortgage. Some lenders will go to 15 percent, but that usually means a higher interest rate and mortgage insurance. For larger buildings or those in poor condition, expect to put down 25 to 30 percent.

Closing costs typically run 2 to 5 percent of the purchase price and include the appraisal, title search, title insurance, attorney fees, and lender fees. You will also need to budget for inspections — a general home inspection, a roof inspection, and possibly a pest inspection. For a building with significant deferred maintenance, a structural engineer's report may be necessary.

After closing, you will need operating capital. If the building has a mortgage, the lender will require an escrow account for property taxes and insurance. You should also hold back cash for when ready repairs, a vacancy period if units turn over, and the first month's property management fees if you hire a manager.

Finding and evaluating apartment buildings for sale

Apartment buildings are listed on the same sites as single-family homes — MLS databases, Zillow, Redfin — but many are also marketed directly by commercial real estate brokers. A broker who specializes in investment properties can show you off-market deals and help you understand the local rental market.

When you find a building, ask the seller for the rent roll, the profit and loss statement for the past two to three years, and copies of recent leases. These documents tell you what the building actually earns and what it costs to run. A seller who will not provide them, or who provides vague or inconsistent numbers, is a red flag.

Calculate the cap rate — the building's annual net operating income divided by the purchase price. A 5 percent cap rate means the building generates 5 percent of its purchase price in annual profit. Cap rates vary by market and property type, but this number helps you compare one building to another and decide whether the price makes sense for the income it produces.

Visit the building in person, walk the units, and talk to tenants if you can. Ask about maintenance issues, pest problems, and how responsive the current owner is. Check the neighborhood for signs of decline — boarded windows, high turnover, crime — because these affect your ability to rent units and collect rent.

The inspection and appraisal process

A professional home inspector will examine the roof, foundation, plumbing, electrical, HVAC, and appliances. For an apartment building, this is more complex because there are multiple units and shared systems. The inspector should check the condition of the common areas, the roof's remaining life, and the age and condition of the mechanical systems.

The appraisal is ordered by the lender and determines the property's market value. The appraiser will look at comparable sales, the building's condition, and its income. If the appraisal comes in lower than the purchase price, you have a problem — the lender will only finance based on the appraised value, so you will need to pay the difference in cash or renegotiate the price.

If the inspection reveals significant issues — a roof near the end of its life, outdated electrical, foundation cracks — get a specialist's estimate for repair costs. These costs reduce the building's value and your ability to finance it. Some lenders will require repairs to be completed before closing; others will allow you to escrow funds at closing to cover them later.

Financing options for apartment buildings

A conventional mortgage from a bank or mortgage lender is the most common route for a two- to four-unit property. Terms are typically 20 to 30 years, and rates are higher than for single-family homes — usually 0.5 to 1 percent above the rate for a primary residence. You will need to be pre-approved before you make an offer.

An FHA loan can be used to purchase a two- to four-unit property if you will live in one of the units. The down payment can be as low as 3.5 percent, which makes this route attractive for owner-occupants. However, FHA loans have mortgage insurance, stricter property standards, and lower loan limits in most markets.

For buildings with five or more units, you will need commercial financing, which is a different product with higher down payments (25 to 35 percent), shorter terms (5 to 10 years with a balloon payment), and higher rates. Commercial lenders also require more documentation and may require you to personally may provide the loan.

Some investors use portfolio lenders — local or regional banks that keep loans on their own books rather than selling them. These lenders have more flexibility on property condition, tenant mix, and borrower profile, but rates are usually higher and terms shorter.

Making an offer and closing

An offer on an apartment building includes the purchase price, the earnest money deposit (usually 1 to 3 percent of the price), and contingencies. Standard contingencies include financing, inspection, and appraisal. You should also include a contingency for reviewing the rent roll and leases — if the seller has misrepresented the income, you can walk away.

The inspection period is typically 7 to 14 days. During this time, you (or your inspector) can access the building and examine it thoroughly. If you find problems, you can ask the seller to repair them, credit you at closing, or reduce the price. If you cannot reach agreement, you can terminate the contract and get your earnest money back.

Once your offer is accepted, you will explore for the mortgage. The lender will order the appraisal and title search, verify your income and assets, and underwrite the loan. This process typically takes 30 to 45 days. At closing, you will sign the mortgage documents, transfer the down payment and closing costs, and receive the deed.

Property management and ongoing costs

After closing, you own the building and are responsible for everything — collecting rent, handling maintenance requests, enforcing leases, and paying property taxes and insurance. You can do this yourself or hire a property manager.

A property manager typically charges 8 to 12 percent of the monthly rent collected. They handle tenant screening, lease enforcement, maintenance coordination, and rent collection. For a small building, this cost may eat into your profit, but it buys you time and reduces your legal exposure if a tenant is injured or sues.

Operating costs include property taxes, insurance, maintenance and repairs, utilities (if you pay them), trash removal, and landscaping. Budget for vacancy — assume 5 to 10 percent of units will be empty at any given time. Set aside money for capital improvements like a new roof or updated plumbing, because these costs come in lumps and can be large.

Frequently Asked Questions

Can I buy an apartment building with less than 20 percent down?

Yes, with an FHA loan if you will live in one of the units — down payments can be as low as 3.5 percent. With a conventional loan on a two- to four-unit property, some lenders will go to 15 percent down, but you will pay mortgage insurance and a higher interest rate. For buildings with five or more units, down payments are typically 25 to 35 percent.

What if the building has negative cash flow?

A building that costs more to operate than it generates in rent will be very difficult to finance. Most lenders require a debt service coverage ratio of at least 1.2, meaning the income must exceed the mortgage payment by 20 percent. If the building is currently losing money, you will need to either negotiate a lower price, plan renovations to increase rent, or look for a different property.

Do I need a real estate license to buy an apartment building?

No. You can buy a property on your own or work with a real estate agent who represents you. An agent can help you find properties, understand the market, and negotiate the deal. For investment properties, consider working with an agent who specializes in commercial or investment real estate.

What happens if a tenant stops paying rent?

You will need to follow your state's eviction process, which typically involves sending a notice to pay or quit, filing in court if the tenant does not pay, and obtaining a judgment. The process can take 30 to 90 days depending on the state. During this time, you are not collecting rent but still paying the mortgage and operating costs. This is why lenders require cash reserves and why property management experience matters.

Can I use a home equity line of credit to buy an apartment building?

A home equity line of credit is a personal loan secured by your primary residence, not a mortgage on the investment property. Lenders generally do not allow you to use HELOC funds as a down payment on an investment property because it increases your personal debt and reduces your ability to may have access to for the investment mortgage. You will need to save the down payment or borrow it through the investment property mortgage itself.