The FHA rules for counting rental income on 2–4 unit properties determine whether your purchase qualifies — and whether the deal makes financial sense. The 75% rule, the self-sufficiency test, and DPA stacking all connect here. Roland explains exactly how each works before any offer is made.
When you buy a 2–4 unit property with FHA financing and live in one unit, FHA allows the lender to count 75% of the estimated market rent from the non-owner-occupied units as qualifying income toward your debt-to-income ratio.
This rental income credit is one of the most powerful features of FHA multifamily financing — it can lower your effective DTI by thousands of dollars per month, allowing buyers who would not qualify on income alone to purchase a property they could not otherwise afford.
Income source: The FHA appraiser produces a Schedule of Comparable Rents (form HUD-92458) as part of the appraisal. This schedule establishes market rent for every unit — the unit you will occupy AND the rental units. The lender uses the appraiser’s figures, not the current rents being collected, not Zillow estimates.
The 75% haircut: FHA allows 75% of the rental unit market rent as income because 25% is reserved for vacancy, management, and maintenance. A unit the appraiser values at $2,000/month contributes $1,500/month to your qualifying income.
The history exception: If you have documented rental history on the property (12 months of Schedule E tax returns showing the income), some lenders will use documented rental income instead of the appraiser’s estimate — still at 75%.
| Property Type | Rental Units | Example Market Rent/Unit | FHA Income Credit (75%) | Annual Income Credit |
|---|---|---|---|---|
| Duplex (2-unit) | 1 | $2,000/mo | $1,500/mo | $18,000/yr |
| Triplex (3-unit) | 2 | $2,000/mo each | $3,000/mo | $36,000/yr |
| Fourplex (4-unit) | 3 | $2,000/mo each | $4,500/mo | $54,000/yr |
The DTI impact of this income credit on a $200K household income buyer can mean the difference between qualifying for a $500K property and a $900K property — on the same personal income.
This is the rule that ends more triplex and fourplex FHA deals than any other — and most agents don’t know it exists.
For 3-unit and 4-unit FHA purchases only (duplexes are exempt), HUD’s guidelines require that the combined estimated market rent from all units — including the unit the borrower will occupy — equals or exceeds the total monthly PITI (principal, interest, taxes, and insurance).
Source: HUD Handbook 4000.1, Section II.A.4.c.xii(F).
What this means in practice: If the appraiser determines that all three units in a triplex at market rent would generate $6,200/month combined, and the monthly PITI is $6,500/month, the deal fails the self-sufficiency test regardless of the buyer’s personal income or credit score.
The self-sufficiency test creates a natural filter for where FHA 3–4 unit purchases pencil in South Florida. Markets with below-market rents relative to purchase price (urban core, legacy rent situations) frequently fail the test at current rents — even when the value-add upside is real.
As a licensed GC, Roland walks the property, estimates per-unit market rents based on actual condition, and runs the self-sufficiency calculation before the offer is submitted. A failed test at appraisal means starting the process over.
The following programs are all eligible for use on FHA 2–4 unit owner-occupied purchases in South Florida.
See the complete current directory at South Florida DPA directory.
Roland runs the FHA rental income calculation, self-sufficiency test, and DPA stack analysis on every multifamily property before any offer is submitted. Zero cost on buyer representation.
Financing readiness guidance. Roland helps buyers separate lender approval from a payment that is healthy for real life, including insurance, taxes, HOA, flood insurance, and cash needed to close.
Use these resources to connect property type, financing, operations, risk, and decision readiness before moving forward.
