Adding units to an existing building
Converting or expanding a property into more units than it has now
The permitted unit count is the gating item here — the completed-value appraisal has nothing to value until the added units are legally approved.
- Construction or rehab loan sized on the completed multi-unit value The project is valued and drawn against what the building is worth once the additional units exist and are legal, not against its current unit count.
- A standard single-family rehab loan It isn't underwritten against a multi-unit appraisal form or the zoning approval an added-unit conversion actually depends on.
Lenders in the directory
No lender here publishes a rule for this
This is an underwriting judgment, not a published threshold. None of the 37 lenders in the directory states a policy on it, so there is no honest way to build a shortlist — and a list computed only from which products a lender writes would tell you nothing you could act on.
What matters here is how the file is presented rather than which lender receives it. The sections below cover that. When you are ready to approach lenders, the directory shows what each one does publish, with the date it was verified.
Zoning and the permitted unit count come first
The lender's completed-value appraisal assumes the added units are legal under local zoning and building code. If the jurisdiction hasn't approved the final unit count, there's no configuration yet for an appraiser to comp — this has to be resolved before financing terms mean much.
The appraisal form changes with the unit count
A small multi-family conversion — two to four units — typically uses a Form 1025 income approach; a larger conversion may involve a full operating income statement. The appraiser needs the final configuration settled to comp it correctly.
Occupied buildings complicate the draw schedule
If any unit stays occupied during construction, relocation logistics or phased work affect both the construction schedule and how the lender times its draw inspections. Sort that out before the timeline is set, not once work has started.
What changes at the refinance
Once the added units are complete and leased, a refinance underwrites the full rent roll across every unit in the finished building, not the rent from the original single-unit configuration.
What to have ready
- Zoning or permitting approval for the final unit count
- A phased construction plan if any unit stays occupied during the work
- A rent roll projection for the finished unit count
- A completed-value appraisal scoped for the final configuration
Questions
Can I get financing before zoning approves the added units?
Does an occupied building change how the loan is drawn?
What appraisal form applies to a two-to-four unit conversion versus a larger one?
Terms used on this page
- After Repair Value (ARV) — After repair value is the estimated market value of a property once planned renovations are finished. It is the basis for most fix-and-flip and BRRRR lending decisions.
- Form 1025 (Small Residential Income Property Appraisal Report) — Form 1025 is the standard appraisal report used for two-to-four unit residential properties. Unlike the one-unit report, it includes an income approach and a unit-by-unit rent analysis, since these properties are typically rented.
- Form 216 (Operating Income Statement) — Form 216, the Operating Income Statement, is an appraisal form used alongside a small residential income property appraisal to develop the estimated income and expenses that support an income-approach opinion of value.