Multi family home financing is a mortgage used to buy a property with two to four residential units, and the right loan depends mostly on whether you will live in one of those units. Live there, and you can use low-down-payment programs like FHA or VA. Buy it purely as a rental, and you move into investor terms with more cash down and a higher rate. In Louisa County, where true duplexes are scarce, it also pays to know what counts as multi-unit before you make an offer.
Written by Duane Buziak, NMLS #1110647 | Coast2Coast Mortgage LLC NMLS #376205
Two-to-Four Units Count as Residential; Five or More Does Not
Lenders draw a hard line at four units. Duplexes, triplexes, and fourplexes are financed with residential mortgages, the same family of loans used for a single-family house. A building with five or more units is financed as commercial real estate, where the loan is underwritten mostly on the building’s income, terms are shorter, and the rules look nothing like a home loan. This article covers only the residential side.
Inside that residential category, the next line is occupancy. An owner-occupied purchase means you live in one unit as your primary home. An investment purchase means you do not. That single fact drives the rate, the down payment, and which programs are even available. Buying a fourplex and living in one unit, sometimes called house hacking, is financed very differently from buying the same fourplex to rent out entirely.
What the Louisa County market looks like
Multi-unit stock here is thin, and availability changes week to week. Buyers more often run into this topic through a house with an accessory apartment, a small duplex near Louisa town center or Mineral, or a rental property near Zion Crossroads along the Route 15 and I-64 corridor. Around Lake Anna, the question usually arrives as a waterfront home with a separate guest suite.
An apartment does not automatically make it multi family
A basement apartment or guest cottage does not turn a house into a two-unit property. The appraisal and local zoning decide the unit count. If the county records and the appraiser treat the property as a single-family home with an accessory space, it is financed as a single-family home, and any rent from that space is handled under much stricter rules, if it counts at all. Confirm the legal unit count before you build a purchase plan around the income.
Loan Programs That Finance a 2-4 Unit Property
Program rules change, so every figure below is stated as of 2026 and should be confirmed against the source before you rely on it.
- FHA: Owner-occupants only. As of 2026, the minimum down payment is 3.5% on one-to-four-unit properties for borrowers with a qualifying credit score. Three- and four-unit purchases must also pass FHA’s self-sufficiency test, which looks at whether the property’s net rental income covers the full mortgage payment. The current rules are in HUD’s Single Family Housing Policy Handbook.
- VA: Eligible veterans and service members can buy a two-to-four-unit property with no down payment if they live in one of the units, subject to entitlement and lender requirements. Details are on the VA home loans page. If you are tied to Fort Walker, ask whether Louisa County fits your commute, and verify your entitlement first.
- Conventional (Fannie Mae and Freddie Mac): Owner-occupied two-to-four-unit purchases typically require a larger down payment than a single-family home, and investment purchases require more still. Minimums vary by unit count and occupancy, so check the current Fannie Mae Selling Guide instead of working from memory.
- USDA: The standard USDA guaranteed loan is built for single-family homes, so a true duplex generally does not qualify. Most of Louisa County is USDA-eligible by location, which is why this surprises people. Check any address on the USDA eligibility map, but do not assume a multi-unit building will fit the program.
- DSCR and other non-QM investor loans: For buyers who will not live there. These qualify the deal on the property’s rent rather than your personal income. Expect higher rates and larger down payments than owner-occupied programs, and terms vary a lot from one wholesale lender to the next.
Duane Buziak walks buyers through this list in order, starting with the programs that ask for the least cash down and working toward investor products only when occupancy rules the others out.
How Lenders Count Rental Income and Qualify You
On an owner-occupied purchase, lenders typically count only a portion of the rent from the other units toward your qualifying income. Many programs use 75% of documented or projected rent, which leaves room for vacancy and maintenance. The exact percentage and the documentation required depend on the program, so treat 75% as a common benchmark and not a promise.
The paperwork usually comes from one of two places. A signed lease shows actual rent on an occupied unit. For a vacant unit, the appraiser produces a rent schedule (Fannie Mae Form 1007) that estimates market rent. Your own opinion of what the unit could fetch carries no weight with an underwriter.
Reserves and the full payment
Two-to-four-unit purchases often require cash reserves left in the bank after closing, meaning several months of the full housing payment set aside. Requirements vary by program and loan, and they tend to rise with unit count and for investment purchases.
Debt-to-income is calculated on the full monthly payment: principal, interest, property taxes, homeowners or landlord insurance, and mortgage insurance. Louisa County’s real estate tax rate is published by the county and can change, so confirm the current rate with the county’s treasurer or commissioner of revenue before running numbers on a specific property. Properties on or near Lake Anna may also carry assessed values well above the county average, which moves the tax line.
What to gather
- Current leases for any occupied units, plus proof of rent payments if available.
- Two years of tax returns if you are self-employed, since lenders average that income.
- A rent schedule from the appraiser for any vacant unit.
- Recent bank statements showing your down payment and reserves.
A Worked Example: Buying a Duplex and Living in One Side
These figures are illustrations for explanation, not a quote or an offer. Suppose you buy a $400,000 duplex, live in one unit, and the other unit rents for $1,500 a month. Assume a 6.5% fixed rate on a 30-year loan, property taxes at 0.70% of price, and landlord-grade insurance of $200 a month. Confirm the real tax rate, insurance cost, and FHA premium rates before relying on any of this. The FHA premium rates used here are the ones I understand to apply as of 2026.
Structure A: FHA at 3.5% down
- Down payment: $14,000 (3.5% of $400,000). Base loan: $386,000.
- Upfront mortgage insurance premium at 1.75%: $6,755, financed into the loan, so the total loan is $392,755.
- Principal and interest at 6.5%: about $2,482 a month.
- Annual mortgage insurance at 0.55% of $386,000: about $2,123 a year, or $177 a month.
- Taxes: $233 a month. Insurance: $200 a month.
- Total payment: about $3,092 a month.
Structure B: Conventional at 15% down
- Down payment: $60,000. Loan: $340,000.
- Principal and interest at the same 6.5%: about $2,149 a month.
- Private mortgage insurance, assumed at 0.5% a year: about $142 a month.
- Taxes $233 and insurance $200, as above.
- Total payment: about $2,724 a month.
How the rent counts
As a landlord, you may feel you earn the full $1,500, which would leave you paying about $1,592 a month on Structure A. A lender counting 75% of that rent credits you only $1,125 toward qualifying, a net housing cost of about $1,967 on Structure A. The $375 gap is the cushion the underwriter keeps for vacancy and repairs.
The trade-off: Structure B costs $46,000 more cash at closing but lowers the monthly payment by about $368. Recovering that extra cash from the lower payment takes roughly ten years. Real conventional pricing also differs by credit score and loan-to-value, so the comparison is a starting point for a real quote.
Why a Broker With Many Wholesale Lenders Matters for Multi-Unit Loans
Underwriting for two-to-four-unit properties is not uniform. Lenders differ on how much rent they count, how many months of reserves they want, and what minimum credit score they accept on a multi-unit file. A loan officer tied to one company gets one answer. Duane Buziak is an independent broker who shops across many wholesale lenders, so if one underwriter treats your rental income harshly, another may not.
NoTouch Credit: Duane Buziak can pre-qualify you with a soft pull, no hard inquiry, so you can compare an FHA structure against a conventional one before you commit to anything. Dare to Compare: if you already have a quote from another loan officer serving Louisa, bring it. Duane Buziak will line it up against his options on rate, fees, and loan terms, and you decide.
| Feature | Duane Buziak/Coast2Coast | Single-Lender Loan Officer (generic) | Why It Matters |
|---|---|---|---|
| Loan program access | FHA, VA, conventional, and DSCR or other non-QM options through many wholesale lenders | Limited to that company’s own product menu | A duplex that fails one program’s rules may fit another’s |
| Credit pull at pre-qualification | Soft pull through NoTouch Credit, no hard inquiry | Often a hard inquiry to get started | You can compare structures without adding inquiries to your report |
| Handling of rental income | Can steer the file to wholesale lenders whose rent and reserve rules fit the property | One set of overlays applies to every file | Rent treatment changes how much you qualify for |
| Local Louisa County focus | Louisa town, Mineral, Zion Crossroads, and the Lake Anna corridor | Varies; many serve the area from other offices | Local knowledge helps with unit-count, zoning, and well and septic questions |
None of this guarantees a particular rate or approval. Pricing depends on your credit, down payment, property, and the market on the day you lock.
Steps to Take Before You Make an Offer on a Multi-Unit Property in Louisa County
- Pre-qualify with a soft pull. Know your range before you tour anything.
- Decide owner-occupied or investment. This sets your options more than any other choice.
- Choose the program. Compare FHA, VA, and conventional on cash needed and monthly cost, as in the example above.
- Request a rent schedule through the appraisal on any vacant unit, and collect leases on occupied ones.
- Confirm zoning and unit count with Louisa County planning and zoning, so the legal count matches what the listing says.
The Lake Anna angle
A waterfront home with a rentable guest suite, or a plan for short-term rentals, can complicate financing. Short-term rental income is often treated differently from long-term lease income, and some programs will not count it at all, so ask before you rely on it. Lake properties also deserve early checks on well and septic systems and on flood zone status, since both can affect insurance and approval.
Landlord obligations
Owning rental units brings legal duties. Review the basics of the Virginia Residential Landlord and Tenant Act and any local rental rules, and confirm landlord insurance requirements with an insurer, since a standard homeowners policy may not fit. An attorney and an insurance agent can answer what a loan officer cannot.
A note for Realtors: bring the loan officer in before writing the offer, so the rent assumptions in your buyer’s plan are checked against what an underwriter will actually count.
Multi Family Home Financing FAQ
What counts as a multi family home for a mortgage?
A property with two to four residential units counts as multi family and is financed with a residential mortgage. Five or more units fall under commercial lending. The appraisal and zoning determine the unit count, so a house with an accessory apartment is not automatically multi-unit.
Can I use an FHA loan on a duplex?
Yes, if you will live in one of the units. As of 2026, FHA allows 3.5% down on one-to-four-unit homes for borrowers with a qualifying credit score, and 3-4 unit properties must pass a self-sufficiency test. Confirm current terms in HUD’s handbook.
Can a veteran use a VA loan for a fourplex?
Yes, an eligible veteran can use a VA loan on a two-to-four-unit property if they occupy one unit, and no down payment may be required depending on entitlement. Review the rules on VA.gov, then confirm your numbers with Duane Buziak at 540-870-5594.
Does USDA finance duplexes?
Generally no. The standard USDA guaranteed loan is for single-family homes, even though most of Louisa County is USDA-eligible by location. Check an address on the USDA eligibility map and verify the property type before assuming USDA applies.
How much down payment is needed for a 2-4 unit property?
It depends on the program and occupancy. As of 2026, FHA starts at 3.5% for owner-occupants and VA can be zero for eligible veterans. Conventional loans generally need more than single-family homes, and investment purchases need more still, so check the current Fannie Mae Selling Guide.
Will lenders count rental income from the other units?
Usually a portion, not all of it. Many programs count around 75% of documented or appraiser-projected rent, supported by a lease or a rent schedule (Form 1007). The exact rule varies by program and wholesale lender.
Is financing different for a rental I will not live in?
Yes. Investment purchases cannot use FHA, VA, or USDA owner-occupant programs. They typically carry higher rates, larger down payments, and stricter reserves, and DSCR loans qualify on the property’s rent instead of your income.
Can I pre-qualify without a hard credit inquiry?
Yes. Duane Buziak uses NoTouch Credit, a soft pull with no hard inquiry, so you can compare structures before committing. Call 540-870-5594 to start.
Occupancy and Rent Treatment Decide Your Loan
The right multi family loan comes down to two questions: will you live in one of the units, and how will the lender count the rent? Answer those honestly, and the program choice, the cash you need, and the monthly payment fall into place. That is true whether the property is a duplex near Mineral, a small rental off Route 15, or a guest-suite home on Lake Anna.
Ready to take the next step toward your Louisa County home? Get pre-qualified today without any credit impact and discover personalized mortgage options designed for your unique situation, with expert guidance every step of the way. Call Duane Buziak at Louisa Mortgage by Duane Buziak (NMLS #1110647) at 540-870-5594.