On a multi-unit property, coverage is calculated on combined income — which means a modest difference in the appraiser's opinion per unit multiplies across the building.
These questions cover how multi-unit income analysis works.
Quick answer
Coverage on a two-to-four unit property uses combined rental income from all units divided by the property's total PITIA. Because the appraiser provides a rent opinion per unit, small per-unit variances compound into a meaningful swing in your ratio.
Frequently Asked Questions
How is coverage calculated on a fourplex?
Combined monthly rent from all four units divided by the property's total monthly PITIA. All units contribute to a single ratio.
Does each unit get its own rent opinion?
Yes, on the small residential income property appraisal. The appraiser assesses market rent for each unit based on its size, condition, and features.
Why do per-unit differences matter so much?
They multiply. A $75 difference per unit on a fourplex is $300 monthly, which can move a ratio from qualifying to not.
Are all units valued equally?
Not necessarily. Units differ in size, condition, layout, and features, and the appraiser reflects those differences in per-unit rent opinions.
What if units have different lease rents?
Each is assessed individually against market. Under a lower-of policy, the comparison happens per unit rather than in aggregate.
How does a vacant unit affect the calculation?
The appraiser's market rent opinion typically fills in for the vacant unit. Some lenders apply additional conservatism to vacant units.
Do unpermitted units count?
Generally not toward qualifying income. An unpermitted basement or attic unit may be excluded entirely, which can substantially change your ratio.
How do I verify permitting?
Municipal records, the certificate of occupancy, and tax assessment records. A property assessed as two units with three rented is a clear warning.
What if the seller counts an unpermitted unit in the rent roll?
Your actual qualifying income may be lower than the rent roll suggests. Verify permitting before you model the deal or make an offer.
Are utilities factored in?
Not in the gross rent calculation typically, but who pays utilities materially affects your real cash flow. A single-metered building means you carry utility costs.
Does one strong unit offset a weak one?
In the combined calculation, yes — the total is what matters. This aggregation is part of why multi-unit often produces better ratios.
How does laundry or parking income count?
Ancillary income is treated inconsistently. Some lenders include documented ancillary revenue; many exclude it. Ask rather than assuming.
Do storage or garage rentals count?
Same variability as laundry. Documented, lease-based ancillary income is more likely to count than informal arrangements.
What is the effect of a below-market unit?
It reduces the combined figure under a lower-of policy. On a building with several below-market leases, the aggregate impact can be significant.
Should I raise rents before refinancing a multi-unit?
If leases allow and market supports it, documented increases across several units can meaningfully improve your ratio for a refinance.
How does turnover affect underwriting?
High turnover may prompt questions. Consistent occupancy with stable tenants presents better than a building with frequent vacancy.
What documentation is most important?
A rent roll supported by all executed leases and payment records. On multi-unit, complete documentation across every unit matters.
Does the appraiser inspect every unit?
Typically they need access to units to assess condition and features. Coordinate tenant access early, as this is a common source of delay on multi-unit appraisals.
What if a tenant refuses appraiser access?
This can delay the appraisal. Provide proper notice per your lease and state law, and address it early rather than at the appraisal appointment.
What is the most useful preparation step?
Verify permitting on every unit, assemble complete leases and payment records, and coordinate appraiser access with all tenants before the appointment.
