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Multifamily Loans — The Complete Investor Guide

Short-term real estate financing for acquisition, value-add, and transitional scenarios. When to use bridge loans and how to exit cleanly.

Multifamily financing splits at five units. Four units and below is residential: DSCR loans apply, gross rent drives the ratio, and the lender pool is wide. Five units and above is commercial multifamily, underwritten on net operating income after normalized expenses, with a different appraisal and a much narrower set of lenders. Buildings in the 5 to 20 unit band fall into what the industry calls the small-balance gap — too large for residential lending, too small for most institutional multifamily capital — which is why terms in that range vary more between lenders than at any other size. Value-add acquisitions typically use bridge financing to stabilize, then refinance into permanent once the rent roll supports the debt.

What changes at five units?

At four units and below the property is residential. DSCR products apply, underwriting uses gross rent, the appraisal is a residential form, and many capital sources compete for the business.

At five units it becomes commercial. Underwriting shifts to net operating income after normalized expenses, third-party reports become more involved, minimum loan sizes appear, and the lender pool narrows sharply. Investors stepping up from a fourplex are routinely surprised by how different the process feels for one additional unit.

How is NOI calculated and why does it shrink?

Net operating income is gross rental income less normalized operating expenses — management, maintenance, insurance, taxes, utilities and reserves — assessed at market rates rather than at the seller’s actual costs.

A self-managing seller reporting no management expense will still see a management line imposed in underwriting. That normalization routinely produces an NOI below the offering memorandum figure, which produces a lower value, which produces a smaller loan. Underwrite it yourself before making an offer.

What is the small-balance gap?

Most institutional multifamily lenders have loan minimums a 5 to 20 unit building rarely clears. Residential lenders stop at four units. The space between is served by regional banks, credit unions, debt funds and specialty lenders.

It is a fragmented field where no single source is consistently best and terms vary widely on the same deal. This is the clearest case in investment lending for shopping a file rather than accepting the first quote.

How do value-add multifamily deals get financed?

Many small multifamily acquisitions involve below-market rents, deferred maintenance or partial vacancy. A property in that condition often will not support permanent financing at the purchase price, because current NOI does not carry the debt.

The standard structure is bridge financing to acquire and stabilize, then a refinance into permanent multifamily financing once the rent roll supports it. The permanent takeout should be underwritten in principle before the bridge closes.

What do lenders want from the borrower?

Multifamily experience specifically, not rental experience generally. A borrower with eight single-family rentals is not automatically credible on a sixteen-unit building, because the operating discipline differs.

Capital sources vary considerably in how heavily they weight this and whether a third-party property manager can offset limited experience. That variance is another reason the same deal receives materially different answers from different sources.

Frequently Asked Questions

Is a fourplex financed differently than a five-unit building?

Yes, and the difference is substantial. Four units is residential with DSCR products and gross-rent underwriting. Five units is commercial multifamily underwritten on net operating income.

Can I use a DSCR loan on a 5 to 20 unit property?

Some capital sources offer DSCR-style products above four units, which is one of the more useful edge-case programs available. Availability varies by source and by state.

What DSCR or debt yield do multifamily lenders require?

It varies by asset class, tenancy and capital source, and commercial ratios are underwritten on normalized NOI rather than gross rent. There is no single industry number.

How much do I need to put down on multifamily?

Leverage varies by source, property condition and borrower experience. Value-add acquisitions typically require more equity than stabilized ones.

Can I buy a partially vacant multifamily building?

Usually not with permanent financing at the outset. The common path is bridge to acquire and stabilize, then refinance once occupancy and rents support the debt.

Do I need multifamily experience?

Many capital sources want to see it, and some will accept a third-party property manager as an offset. Requirements differ enough between sources to be worth shopping.

What is a rent roll and why does it matter?

A unit-by-unit schedule of tenants, rents, lease terms and vacancies. It is the primary document in multifamily underwriting and discrepancies in it are the fastest way to lose lender confidence.

How long does multifamily financing take?

Longer than residential investment lending because of third-party reports and lease review. When a contract timeline is shorter, bridge financing is the usual path.

Are mixed-use buildings financed as multifamily?

It depends on the income split between residential and commercial space. Some capital sources classify above a residential-income threshold, others treat all mixed-use as commercial, and some decline it.

Multifamily loansMultifamily purchase, 5-20 unitsSmall multifamily 5-20 unitsDSCR for 2-4 unitsCommercial purchaseBest multifamily lenders

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