House hacking a triplex or fourplex with FHA? Run the self-sufficiency test first

Multi-Family and Apartment Investing
1dFollow

House hacking a triplex or fourplex with FHA? Run the self-sufficiency test first

BJ Everson
Realtor · Columbus, Franklin County · Member since 2026 · 170 posts · 67 votes

A lot of first-time buyers in Columbus look at a triplex or fourplex with FHA's 3.5% down. Before falling for one, run the test FHA applies to 3-4 unit buildings, because your income doesn't help you pass it.

How it works (HUD Handbook 4000.1, net self-sufficiency rental income):

1. Take the appraiser's market rent for every unit, including the one you'll live in. Not the seller's rent roll.

2. Subtract the greater of 25% or the appraiser's own vacancy and maintenance estimate.

3. What's left has to be at least the full monthly payment: principal, interest, taxes and insurance. I run it with the monthly mortgage insurance included to be safe.

Round-number example: four units at $1,100 market rent is $4,400. Less 25% leaves $3,300. If the full payment is $3,450, the building fails by $150 a month, no matter what you earn.

What I check before an offer on a 3-4 unit house hack:

- Rent comps from signed leases, since the appraiser's rent schedule is what counts

- The tax bill at the purchase price and a real insurance quote

- Three months of the full payment in reserves after closing, which FHA requires on 3-4 units

- A fallback if the margin is thin: a conventional loan, or a duplex, which doesn't have this test

Has a 3-4 unit you looked at passed or failed this test, and what moved the number?

BJ Everson

0Reply
168 views

7 Replies

Jump to latestLatest
  • Michael K GallagherBusiness Member
    Real Estate Agent · Columbus OH · Member since 2018 · 1k+ posts · 1k+ votes
    1d

    any insights on why this doesn't apply to duplexes? I do remember they did include the rent numbers and such in my duplex appraisal when we bought with FHA, but I'm unsure if it was part of this requirement honestly.

    [email protected]614-362-2231
    0Reply
  • BJ Everson
    OP
    Realtor · Columbus, Franklin County · Member since 2026 · 170 posts · 67 votes
    1d

    @michaelk504 Good question, and what you remember from the appraisal is right — those rent numbers just aren't this test.

    HUD writes the self-sufficiency requirement only for three- and four-unit properties (Handbook 4000.1). A standard duplex does not have to show that net rents cover the full monthly payment. On a two-unit, you qualify on your own income; the building itself doesn't have to carry the mortgage on its own.

    The rent figures on your FHA duplex appraisal were almost certainly on the Form 1025 (Small Residential Income Property Appraisal Report). Those are used for a different calculation: counting rental income toward your qualifying income, typically 75% of the rent from the unit you don't live in, added to your gross income for DTI. That's why they showed up, and why it can feel like the same rule.

    On a 3-4 unit you have to clear both: that income/DTI test, and the separate self-sufficiency screen where every unit's market rent — including the one you'll occupy — minus at least 25%, has to cover the full payment. Your paycheck doesn't help you pass that one.

    One caveat: if a two-unit has an accessory dwelling unit, HUD can classify it as a three-unit property, and then this test would apply. Worth confirming the unit count with the lender.

    0Reply
  • Max Comperatore
    Technology · New York, NY · Member since 2026 · 71 posts · 19 votes
    11h

    Michael, duplexes escape it because HUD's self-sufficiency screen is a debt coverage test wearing a rental income costume, and it only binds at 3 to 4 units where the rent roll is supposed to carry the asset.

    BJ, your $4,400 example is a 0.957x DSCR. That is the whole story. The 25% haircut is a crude expense load, so the screen is really a 1.00x coverage floor, and institutional paper prices at 1.25x. The $150 monthly gap is not a rounding error, it is $1,800 a year of sponsor subsidy. Capitalized at an 8.0% debt constant, that is roughly $22,500 of loan proceeds the building cannot support. Your 3.5% down is really 96.5% LTC against an asset that fails its own carry, and LTC means nothing when LTARV gets set by the next buyer underwriting to the same 1.00x.

    Then the S-curve bites. Reassessed taxes at purchase price and a real insurance quote both reset upward in year one and again in year two, so the $150 becomes $250 to $300 before you have a tenant ledger. Add horizontal cost per unit, roof, parking, site work, separate metering, and four units absorb it worse than forty because there is no scale to spread it across.

    BJ, on your last failed deal, what was the appraiser's rent schedule versus the signed leases, and how wide was that gap?

    0Reply
    • BJ Everson
      OP
      Realtor · Columbus, Franklin County · Member since 2026 · 170 posts · 67 votes
      4h

      I like this level of analysis, thank you! And appraiser will take what is actually in place even if that's below market because it is what reality is telling them. More conversative than anything.

      0Reply
  • Adam Summerer
    Lender · Franklin, TN · Member since 2026 · 154 posts · 41 votes
    9h

    Good breakdown, this kills more FHA fourplex deals than people expect. Two things I'd add: it only applies to 3-4 units, a duplex on FHA doesn't have to pass it, and on 3-4 units FHA also wants 3 months of PITI in reserves after closing that can't come from a gift. If a building fails by a small amount like your example, price it conventional too, since it doesn't run this test. (Happy to run both if anyone wants to compare.)

    0Reply
    • BJ Everson
      OP
      Realtor · Columbus, Franklin County · Member since 2026 · 170 posts · 67 votes
      4h

      Great point Adam!

      0Reply
  • Drew SygitBusiness Member
    Property Manager · Royal Oak, MI · Member since 2012 · 13k+ posts · 9k+ votes
    2h

    What happens if the rents are BELOW the appraiser's estimates?

    [email protected]248-209-6824
    Logical Property Management4.9465 Reviews
    WebsiteView Page
    0Reply
Join the conversationCreate a free account to reply, vote on answers and follow this thread.
Log InJoin for Free