A guide to commercial real estate investing for beginners

Written by Samantha SheltonNMLS 1647301Updated October 2026

General educational information only, not tax, legal or investment advice, and not an offer or solicitation to buy any security. Take tax questions to a qualified tax professional, lease and entity questions to a Michigan attorney, and securities questions to a licensed professional. Align Lending is an independent Michigan mortgage broker financing one- to four-unit property, not a commercial lender, broker-dealer, adviser or syndicator.

Investors evaluating mixed-use brick storefronts on a downtown street while learning commercial real estate investing

Commercial real estate is property held to produce income from business tenants or from five or more households, office, retail, industrial, multifamily of five units and up, and mixed-use buildings. The number that governs the whole category is four: Fannie Mae purchases or securitizes first-lien mortgages secured by residential properties when the dwelling consists of one to four units, so a fourplex is financed like a house and a five-unit building is financed like a business.

That one extra unit changes the loan, not just the vocabulary. Commercial credit is business-purpose credit, which Regulation Z exempts from the Truth in Lending Act, no Loan Estimate, no Closing Disclosure, none of the consumer machinery you saw when you bought your house.

Learn how commercial real estate investing works: which asset classes produce which income, why buildings are priced off net operating income, how leases split the costs, and how commercial lending differs from a residential mortgage. Newer to this? Start with our real estate investing guide or the investment property types hub.

Key takeaways:

Five units is the dividing line: Fannie Mae buys first-lien mortgages on residential properties of one to four units, so at the fifth unit a property leaves residential financing and is underwritten as a business on the income it produces.
A commercial loan is not a consumer loan: Regulation Z exempts credit extended primarily for a business or commercial purpose, and Fannie Mae’s multifamily terms run 5 to 30 years against amortization of up to 30 years, a mismatch that leaves a balloon at maturity.
The building qualifies before you do: Fannie Mae’s conventional multifamily terms cap loan-to-value at 80% and require a 1.25x minimum debt service coverage ratio, with non-recourse generally reserved for loans above $750,000.

What counts as commercial real estate?

Commercial real estate is any property held to earn income from a business tenant or from five or more dwelling units, which is why one category holds both a warehouse and an apartment building. What they share is the treatment: valued and financed as an operating business.

Asset type	What you are actually underwriting	Typical lease structure
Office	A few tenants’ credit and their space needs a decade out	Multi-year, often modified gross
Retail	The trade area’s sales volume and the anchor’s health	Often triple net, sometimes percentage rent
Industrial	Freight access, clear height, dock doors, power	Long-term, commonly triple net
Multifamily, 5+ units	Many short leases and the local rental market	Annual residential leases
Mixed-use	Apartments over storefronts, two businesses in one basis	Residential plus commercial leases

The edges are where beginners get hurt, because two of them are not passive real estate at all.

Mixed-use straddles the four-unit line: Three apartments over a storefront may or may not qualify for residential financing, depending on unit count and how much of the income and floor area is commercial.
Condo units sold with a rental pool are a securities question: A unit marketed with a mandatory rental arrangement or an emphasis on returns from the promoter’s efforts can be an investment contract, and it is separately hard to finance.
Assisted living and skilled nursing are licensed operating businesses: Michigan licenses these facilities, so you are buying payroll, census risk and regulatory exposure with the building.

Why is commercial property priced off income instead of comparable sales?

Because you are buying a cash flow stream, and the market prices it as a yield: value equals net operating income divided by the market capitalization rate. A building throwing off $75,000 of net operating income in a submarket trading at a 7.5% cap rate is worth roughly $1,000,000, and every extra $1,000 of annual NOI adds about $13,300.¹

That is a lever a homeowner does not have: raise rents, cut an expense or fill a vacancy and you have manufactured value. It all rests on the income line, which is why net operating income is the number to interrogate first. A pro forma with 3% vacancy and no management fee quotes a value you will never realize.

It cuts the other way too. In its May 2026 Financial Stability Report, the Federal Reserve reported that capitalization rates at the time of purchase had recovered from the historical lows reached in 2022 to just below their historical average. When cap rates rise, values fall even if no tenant misses a payment.

How do commercial leases divide the costs?

The lease assigns three costs (property taxes, insurance and maintenance) and that single choice is the largest practical difference between owning an apartment building and owning a storefront.

Gross lease: The tenant pays rent and the landlord pays operating expenses, so your NOI absorbs every reassessment and insurance renewal.
Modified gross: The landlord covers expenses up to a base-year stop and the tenant pays increases above it. Common in office, and the base year is negotiable.
Triple net (NNN): The tenant pays taxes, insurance and maintenance on top of rent, the most passive structure in commercial real estate, and why single-tenant net-leased retail prices closer to a bond than a building.

Be honest about what triple net does: it does not remove risk, it concentrates it in one tenant’s credit and one expiration date. Two line items outside net operating income then decide whether the lease was worth signing. Tenant improvements and leasing commissions are the landlord’s cash cost of filling space, and on a re-lease they can consume a year or more of rent. Rentable versus usable square footage means the tenant pays for common area, so quoted rent and delivered space differ.

How is a commercial loan different from a residential mortgage?

Start with what it is not: a consumer loan. Regulation Z exempts credit extended primarily for a business, commercial or agricultural purpose from the Truth in Lending Act, and Regulation X uses that same test for RESPA, so the Loan Estimate, the Closing Disclosure and the ability-to-repay rules do not attach. Read it at the CFPB’s page for Regulation Z § 1026.3, exempt transactions.²

The trigger is purpose, not property class: The official commentary deems credit to acquire, improve or maintain rental property that is not owner-occupied to be for business purposes regardless of unit count. A loan on one rental house is business-purpose credit too.
Owner-occupancy narrows it less than people assume: The commentary deems credit to acquire owner-occupied rental property business purpose above two housing units, and credit to improve or maintain it above four. Program eligibility is separate: owner-occupant buyers of two- to four-unit property can still use FHA and VA financing, and FHA applies a self-sufficiency test to three- and four-unit properties that it does not apply to duplexes.³ Neither program reaches a five-unit building.
Term and amortization are two different numbers: Fannie Mae’s conventional multifamily terms run 5 to 30 years with amortization up to 30 years. When the term is shorter, the balance comes due as a balloon and you refinance or sell into whatever market exists that day.
Underwriting starts with the building, not your paystub: Debt service coverage ratio is net operating income divided by annual debt service, and Fannie Mae’s conventional multifamily terms set a 1.25x minimum against a maximum 80% loan-to-value. That makes real estate leverage a property question, because coverage caps the debt the building will carry.
Recourse is negotiated, not assumed: Fannie Mae indicates non-recourse execution is available for most loans greater than $750,000, with carve-outs for bad acts such as fraud and bankruptcy. Below that, and on most bank balance-sheet loans, expect a personal guarantee.
SBA financing is for owner-occupants: A borrower acquiring, renovating or reconstructing an existing building must permanently occupy at least 51% of the rentable property, and 60% for new construction. It finances your business’s premises, not a rental portfolio.

Our own limits, plainly: Align Lending is a residential broker. We shop one- to four-unit purchases and refinances, including two- to four-unit multifamily property. At five units you need a commercial lender, and we will say so on the first call.

What does the math look like on a five-unit deal?

Two tests size the loan, and the tighter one wins. Take a $1,000,000 five-unit building producing $75,000 of net operating income, a 7.5% cap rate.⁴

Run the loan-to-value test: At a maximum 80% loan-to-value, the property supports up to $800,000 of debt.
Run the coverage test: At a 1.25x minimum, maximum annual debt service is $75,000 divided by 1.25, or $60,000. Whether $800,000 of debt costs $60,000 a year depends on the rate and amortization offered, and if it costs more, the loan shrinks until coverage is satisfied.
Then measure your own return: Say the loan comes in at $750,000 with annual debt service of $57,000. Coverage is 1.32x, cash flow before capital spending is $18,000, and against $250,000 down plus roughly $30,000 of closing and due diligence costs that is about a 6.4% cash-on-cash return.

Hypothetical example, not an offer. Actual rates, costs and payments vary.

Notice what the example leaves out: a roof, a parking lot, tenant improvements on the next re-lease, and the balloon. Those four turn a spreadsheet-positive deal into a capital call.

What are the honest risks of commercial real estate?

The risks are different from residential rather than uniformly larger, and three of them have no residential equivalent at all.

Tenant concentration: In a single-tenant building one departure is 100% vacancy, and in a strip center one anchor can be most of the income. A twenty-unit apartment building spreads that across twenty leases.
Re-leasing is slow and expensive: Space can sit for months, and you fund the improvements and commissions to fill it. That gap is why lenders want reserves.
Maturity risk is what ends deals: In its May 2026 Financial Stability Report, the Federal Reserve noted that a large volume of commercial real estate debt was scheduled to mature over the coming year, raising the possibility that forced sales, were they to occur, could put downward pressure on prices. A balloon does not care what the market looks like on your maturity date.
Illiquidity: There is no owner-occupant buyer pool waiting. Marketing periods run in months, and price discovery in a thin submarket is a negotiation, not a comparable-sales lookup.

Nothing here predicts prices. Attribute any forecast you rely on to the institution that published it, with its date.

How do you invest without buying a building?

Two routes, both with a legal character direct ownership lacks. Real estate investment trusts must distribute at least 90% of their taxable income each year, which is why they pay regular dividends, and publicly traded shares carry daily liquidity.

Private syndications are securities: limited partnership or LLC interests offered under a Regulation D exemption, with a Form D filed after the first sale, and usually limited to accredited investors. The income and net worth tests are the routes people know. Income above $200,000, or $300,000 with a spouse or spousal equivalent, in each of the two most recent years with a reasonable expectation of the same in the current year, or net worth above $1 million excluding the primary residence, but they are not the only routes. Since the SEC’s 2020 amendments, Rule 501(a) also reaches individuals holding a Series 7, 65 or 82 license in good standing, knowledgeable employees of a private fund, and several categories of entities. Whether you qualify is a question for a licensed securities professional. That is the legal framework, not a recommendation, and nothing here is an offer or a solicitation.

What tax rules work differently on commercial property?

The recovery period is the headline: nonresidential real property is depreciated over 39 years under the IRS general depreciation system, residential rental property over 27.5. Classification follows use, not the loan, so a five-unit apartment building is residential rental property for depreciation even though it took a commercial mortgage.⁵

Land is never depreciable: The IRS states plainly that you cannot depreciate the cost of land because land does not wear out, become obsolete, or get used up. Every depreciation figure needs a land-versus-improvement basis allocation behind it. See IRS Publication 946 and real estate depreciation.
Like-kind exchanges are real-property-only now: For 2018 and later years, section 1031 applies only to exchanges of real property held for use in a trade or business or for investment, other than property held primarily for sale. The clock is unforgiving: identify replacement property in writing within 45 days of transferring the relinquished property, and receive it by the 180th day.
Depreciation comes back at sale: Unrecaptured section 1250 gain, broadly the part attributable to depreciation, is taxed at a maximum 25% rate rather than the lower long-term capital gains rates. Recapture applies to depreciation allowed or allowable, so skipping the deduction does not avoid it.

What Michigan investors should know

Michigan puts its own line at three units, two doors below the five-unit financing line, and it taxes and licenses commercial property differently from the house you live in.

Three units, not five, triggers the housing code: Under the Housing Law of Michigan, 1917 PA 167, a multiple dwelling is one occupied other than as a private dwelling or 2-family dwelling, so in the cities, villages and townships the act reaches, a triplex is already a multiple dwelling. MCL 125.529 bars occupancy of units in a multiple dwelling without a certificate of compliance issued on an inspection, and MCL 125.526 caps the interval between inspections at 4 years, extendable by local ordinance to 6 where the last inspection found no violations and ownership has not changed.
Transfer tax is $8.60 per $1,000 and the seller owes it: $3.75 per $500 or fraction to the state under MCL 207.525 plus 55 cents per $500 to a county under 2,000,000 in population under MCL 207.504, with seller liability at MCL 207.523. It applies to commercial transfers the same as residential ones, so build it into a sale-side model.
Your tax bill will not look like the seller’s: Under MCL 211.27a, a transfer of ownership uncaps taxable value in the calendar year following the transfer, and there is no principal residence exemption on income property. Underwrite the uncapped, non-homestead bill.
Hiring a manager is hiring a licensee: MCL 339.2501 folds property management into the definition of a real estate broker, so a firm managing your building for a fee must be licensed. MCL 339.2503 exempts an owner acting on property it owns. Verify the license before you sign a management agreement, and take the agreement itself to a Michigan attorney.

How Align matches lenders to rentals

Lenders treat a duplex, a condo rental and a short-term rental very differently. Some count projected rent, some want a signed lease, and some will not finance the property at all.

Because Align is a broker, Samantha takes your file to the wholesale lender whose rules fit the property you actually want to buy. One application, multiple lenders.

Review an investment property

FAQ: Commercial real estate investing

Here are answers to common questions about commercial real estate investing.

How much money do I need to start investing in commercial real estate?

Enough to clear both underwriting tests, which usually means 20% to 30% down plus closing costs and reserves, because agency multifamily terms cap loan-to-value at 80% and coverage often binds tighter. On a $1,000,000 building that is realistically $250,000 to $350,000 in cash. With less, investors typically start in publicly traded REITs or stay in one- to four-unit property. Model it with cash-on-cash return first.

What is a cap rate and how do I use it?

A cap rate is net operating income divided by price: $75,000 of NOI on a $1,000,000 building is a 7.5% cap rate. It prices risk rather than grading a deal, so a higher cap rate usually signals weaker demand or a thinner market, not a better buy. Compare it only against recent sales in the same submarket. See cap rates in real estate.

How is commercial financing different from a home mortgage?

It is business-purpose credit, so Truth in Lending and RESPA disclosures do not apply. Term and amortization are separate numbers, and agency multifamily terms of 5 to 30 years against amortization up to 30 years leave a balloon at maturity. Underwriting centers on debt service coverage, personal recourse is common below the non-recourse thresholds, and prepayment is often restricted. Compare buying a multi-family home.

Is commercial real estate riskier than residential?

It carries different risk, not automatically more. One vacancy hurts more because a single tenant may be most of the income, and re-leasing takes longer and costs more. In exchange, commercial leases run for years with contractual escalations, which can make income steadier than annual residential leases. The trade-off is in investing in single-family, and market context is at NAR research and statistics.

The bottom line on commercial real estate investing

Commercial real estate is income property valued as a business: NOI divided by a market cap rate sets the price, so $75,000 of net operating income at a 7.5% cap rate is a $1,000,000 building. The line separating it from residential is four units, because Fannie Mae buys first-lien mortgages on one- to four-unit dwellings and the fifth unit moves you into commercial credit, business-purpose credit, exempt from the Truth in Lending Act and RESPA, underwritten to a coverage test rather than your paystub, and usually maturing in a balloon.

If you’re ready to finance a one- to four-unit investment property, talk to Align Lending. We’ll shop your purchase or refinance across our lender network and show you the numbers side by side. Call 248-506-5727 or start online. At five units and up we’ll point you to a commercial lender rather than pretend otherwise. Take tax treatment to a qualified tax professional and securities and entity questions to the appropriate licensed professional.

Footnotes:

1. Example figures are hypothetical and for educational purposes only; they do not constitute an advertisement of credit terms, a rate quote, an offer of credit, or a projection of investment returns under federal or state law. The $75,000 net operating income, the $1,000,000 value, the 7.5% cap rate and the approximately $13,300 of value per $1,000 of NOI are Align Lending arithmetic shown to demonstrate the income approach. They are not observed market figures, describe no specific property, and exclude financing costs, capital expenditures, leasing costs and taxes. Return to text.

2. Commercial loan terms are set by each lender and vary by asset class, market, sponsor and loan size. The loan term, amortization, loan-to-value, coverage-ratio, recourse-threshold and SBA occupancy figures cited here are drawn from published agency and government program materials in effect at the time of writing and are not offers of credit; confirm current terms directly with the lender or agency before relying on them. Regulatory coverage determinations under Regulation Z and Regulation X are made by the creditor on the facts of each transaction, and many creditors provide disclosures voluntarily on exempt loans. Align Lending is an independent Michigan mortgage broker, NMLS #2041154, arranging financing on one- to four-unit residential and investment property; it is not a commercial lender, an agency multifamily lender, an SBA lender, a property manager or a syndicator. Return to text.

3. Align Lending is not acting on behalf of or at the direction of FHA or HUD, and works with VA-approved lenders but is not endorsed or sponsored by the Department of Veterans Affairs or any government agency. FHA and VA program rules, including occupancy, minimum down payment and the three- and four-unit self-sufficiency test, are set by HUD and the Department of Veterans Affairs, apply only to one- to four-unit residential property, and are subject to change. Neither program finances a property of five or more units, and neither is available for a property the borrower does not occupy. Return to text.

4. The worked example is hypothetical and illustrative only. The $1,000,000 purchase price, $75,000 net operating income, $800,000 and $750,000 loan amounts, $60,000 and $57,000 annual debt service figures, $250,000 down payment, roughly $30,000 of closing and due diligence costs, $18,000 of cash flow, 1.32x coverage and 6.4% cash-on-cash result are Align Lending arithmetic. No interest rate is stated, implied or quoted, no specific property or lender is described, and the figures exclude capital expenditures, tenant improvements, leasing commissions, income taxes and the balloon balance due at maturity. Actual results depend on the property, the lender, the market and your own underwriting, and past performance does not predict future results. Return to text.

5. This is general information, not tax advice. Recovery periods and property classification, the land-versus-improvement basis allocation, like-kind exchange qualification and timing, passive-activity rules, depreciation recapture and entity choice depend on your individual circumstances and change over time. Consult a qualified tax professional about your situation. Align Lending is a mortgage broker and does not provide tax, legal or investment advice. Return to text.

Sources: purchase or securitization of first-lien mortgages secured by residential properties when the dwelling consists of one to four units, Fannie Mae Selling Guide B2-3-01, General Property Eligibility. Multifamily loan term of 5 to 30 years, amortization up to 30 years, maximum 80% loan-to-value, minimum 1.25x debt service coverage ratio, and availability of non-recourse execution for most loans greater than $750,000 with standard carve-outs for bad acts, Fannie Mae Multifamily conventional properties and fixed-rate mortgage loan term sheets; confirm the current term sheet before relying on these figures. Exemption from Regulation Z of an extension of credit primarily for a business, commercial or agricultural purpose, and the official interpretations deeming credit for non-owner-occupied rental property (regardless of the number of housing units) to be for business purposes, credit to acquire owner-occupied rental property of more than two housing units to be for business purposes, and credit to improve or maintain owner-occupied rental property of more than four housing units to be for business purposes, 12 CFR 1026.3(a) and Official Interpretations, Consumer Financial Protection Bureau. Exemption of business-purpose credit from RESPA coverage by reference to the Regulation Z test, 12 CFR 1024.5(b)(2). Requirement that net rental income on three- and four-unit properties equal or exceed the projected mortgage payment (the self-sufficiency test), FHA Single Family Housing Policy Handbook 4000.1, U.S. Department of Housing and Urban Development. Permanent occupancy of no less than 51% of the rentable property for acquisition, renovation or reconstruction of an existing building and no less than 60% for new construction, U.S. Small Business Administration, 13 CFR Part 120 and SBA loan program materials. Recovery of purchase-time capitalization rates from the historical lows reached in 2022 to just below their historical average, and the volume of commercial real estate debt scheduled to mature over the coming year with the possibility that forced sales could put downward pressure on prices, Board of Governors of the Federal Reserve System, Financial Stability Report, May 2026. Requirement that a REIT distribute at least 90% of its taxable income for the year, U.S. Securities and Exchange Commission, Investor.gov, Real Estate Investment Trusts (REITs). Limited partnership interests and limited liability company membership interests as securities sold in private placements, Regulation D exemptions, the Form D filing requirement, and the accredited investor income and net worth thresholds of $200,000 individually or $300,000 with a spouse in each of the two prior years, or net worth over $1 million excluding the primary residence, Rule 501(a) of Regulation D and SEC investor education materials. Inability to depreciate the cost of land because land does not wear out, become obsolete, or get used up, and the 39-year recovery period for nonresidential real property and 27.5-year recovery period for residential rental property under the general depreciation system, Internal Revenue Service Publication 946, How To Depreciate Property, and Publication 527, Residential Rental Property. Application of section 1031 like-kind exchange treatment for 2018 and later years only to exchanges of real property held for use in a trade or business or for investment, other than real property held primarily for sale, and the 45-day identification and 180-day receipt periods, Instructions for IRS Form 8824, Like-Kind Exchanges. Maximum 25% rate on unrecaptured section 1250 gain, IRS Topic No. 409 and Publication 544, Sales and Other Dispositions of Assets. Accredited investor categories beyond the income and net worth tests, including holders of a Series 7, 65 or 82 license in good standing and knowledgeable employees of a private fund, Rule 501(a) of Regulation D as amended by SEC Release No. 33-10824 (2020), and SEC investor education materials. Definition of a multiple dwelling as a dwelling occupied otherwise than as a private dwelling or 2-family dwelling, the certificate of compliance requirement, and the 4-year statutory maximum inspection interval with a local-ordinance extension to 6 years, Housing Law of Michigan, 1917 PA 167, MCL 125.402, MCL 125.529 and MCL 125.526. State real estate transfer tax of $3.75 per $500 or fraction, MCL 207.525; county tax of 55 cents per $500 in a county with population under 2,000,000, MCL 207.504; seller or grantor liability, MCL 207.523. Uncapping of taxable value in the calendar year following a transfer of ownership, MCL 211.27a and Michigan Department of Treasury guidance on changes in ownership and uncapping; unavailability of the principal residence exemption on income property, Michigan Department of Treasury, Principal Residence Exemption. Inclusion of property management within the definition of real estate broker, MCL 339.2501, and the owner exemption, MCL 339.2503. Agency non-endorsement: Align Lending is not acting on behalf of or at the direction of FHA or HUD and is not endorsed or sponsored by the Department of Veterans Affairs.

This article is for informational purposes only and is not intended to provide legal, financial, tax or investment advice, and it is not an offer to sell or a solicitation of an offer to buy any security. Lending program terms, agency guidelines, tax rules, licensing requirements and market conditions change and vary by property, program and locality; confirm current financing figures with your loan officer, confirm tax treatment with a qualified tax professional, confirm securities questions with a licensed securities professional, and confirm lease, zoning, licensing and entity questions with a Michigan attorney. Figures shown are illustrative, are not a rate quote or an offer of credit, and do not constitute an advertisement of credit terms or a projection of investment returns. Past performance does not predict future results. Align Lending is an independent Michigan mortgage broker, NMLS #2041154, and is not a commercial lender, broker-dealer, investment adviser, syndicator or property manager.