Analyzing 2–4 Unit Multifamily Deals for Positive Cash Flow

[Levonte Wilson]

Hello Multi-Family Investors,

I’m focused on getting started with small multifamily properties—duplexes, triplexes, and fourplexes—and I want to make sure I analyze deals correctly to ensure positive cash flow.

I’d love to hear from experienced investors:

• What key factors do you focus on when evaluating small multifamily deals?
• How do you accurately estimate expenses, vacancy, and repairs?
• What metrics or rules of thumb do you use to determine if a property will generate consistent cash flow?
• Are there any common mistakes you see beginners make when analyzing 2–4 unit properties?

Any guidance, insights, or frameworks you could share would be greatly appreciated. I’m eager to learn and apply proven strategies as I start building my small multifamily portfolio.

Thank you in advance!

[Vincenzo Lomaestro]

Great question — this is exactly where most 2–4 unit investors lose money without realizing it.

A few things that matter more than people think:

1. Underwrite expenses like a lender, not like a homeowner.

Most beginners underestimate turnover, CapEx, and true maintenance. Small multifamily behaves more like commercial than single family.

2. Focus on DSCR before cash flow.

If the deal doesn’t support the debt safely, cash flow numbers are meaningless. I personally won’t touch anything under 1.30 DSCR.

3. Build in vacancy even in “hot” areas.

Real vacancy is never zero — 5–8% is much more realistic long-term.

4. Separate “price that looks good” from “price that is safe.”

Your maximum safe offer is often much lower than asking — and that’s where most deals break.

Common beginner mistakes:

• Ignoring CapEx

• Using unrealistically low repairs

• Assuming perfect occupancy

• Underestimating turnover costs

• Chasing cash flow instead of lender safety

I actually built a small underwriting framework for myself that applies lender-grade assumptions to 2–4 unit deals — it completely changed which deals I walk away from.

Happy to share more if helpful.