Five-Plus Unit Commercial Financing Basics

Introduction

Investors moving from one-to-four-unit residential rentals into five-plus-unit multifamily enter a different lending market. Debt is sized from property cash flow, lenders evaluate business plans and sponsorship depth, and product options include agency, bridge, bank, CMBS, and debt-fund executions.

Multi-Family USA focuses exclusively on this commercial segment. This guide explains the boundary and what changes in underwriting and execution.

The five-unit boundary

In US lending practice, one-to-four-unit properties usually follow residential mortgage guidelines (FHA, VA, conventional, and residential DSCR programs where available). Properties with five or more units are treated as commercial income-producing real estate.

That shift affects:

• Sizing — DSCR, debt yield, and LTV based on normalized NOI.
• Terms — Nonrecourse or limited recourse structures with carve-out guaranties on many products.
• Diligence — PCA, Phase I environmental, appraisal standards, and SPE covenants.
• Timeline — Commercial closings often run 45–90+ days depending on product and diligence depth.

Mixed-use properties with a multifamily component may still require commercial underwriting when the residential unit count or income mix triggers commercial treatment—confirm with counsel and lenders early.

How commercial underwriting differs

Residential investors often qualify based on personal income, credit, and rent from a small property. Commercial multifamily lenders underwrite the asset and sponsor together:

Review commercial DSCR and NOI normalization as foundational skills.

Product landscape at 5+ units

Stabilized acquisitions and refinances — Agency, CMBS, and bank permanent debt.

Transitional and value-add — Bridge and debt-fund floating-rate products with defined exit to permanent debt.

Compare paths with agency vs bridge and acquisition vs refinance frameworks.

Entity and sponsor expectations

Commercial lenders expect a borrowing entity—usually an LLC—and guarantor packages with liquidity, net worth, and multifamily experience documentation. See entity structure for multifamily borrowing.

First-time commercial sponsors can still execute strong deals with conservative underwriting, experienced partners, or professional management—but preparation matters.

Practical first steps for investors crossing into 5+ units

1. Build a lender-grade pro forma with in-place and stabilized NOI views.
2. Run loan sizing under DSCR, debt yield, and LTV constraints.
3. Assemble a document checklist before requesting quotes.
4. Match product to business plan stage—not every deal should start with bridge or permanent debt.
5. Request a free deal review for lender-fit feedback on a specific asset.

Scope note

Multi-Family USA does not publish lending guidance for one-to-four-unit residential programs. If you are evaluating a four-unit or smaller property, work with residential mortgage professionals. When you acquire or refinance five or more units, commercial multifamily frameworks on this site apply.

Educational content only—not legal, tax, or investment advice. Consult your own legal counsel and tax and accounting professionals before acting.

Frequently asked questions