Real Estate

Step-by-Step Guide to Multifamily Property Underwriting

Underwrite a multifamily property from rent roll and expenses through NOI, cap rate, debt service, DSCR, sensitivity analysis and exit assumptions.

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Decision framework

What this guide helps you evaluate

Investors screening or underwriting apartment and multifamily acquisitions.

Prepared by the PROFENG Editorial & Engineering Team. This page is designed to help you compare the moving parts, organize due diligence and ask better questions before you commit money, sign a contract or change an operating process.

What to compare first

  • Rent roll, concessions, vacancy and bad debt
  • Other income and normalized operating expenses
  • Net operating income and cap rate
  • Debt service, DSCR and leverage
  • Renovation, rent-growth, exit cap and sale-cost assumptions

Step-by-step process

  1. 01

    Reconcile the rent roll with trailing financial statements and bank or property-manager data.

  2. 02

    Normalize taxes, insurance, utilities, payroll, repairs and management fees.

  3. 03

    Calculate current NOI before adding value-add assumptions.

  4. 04

    Model debt with actual lender terms and interest-rate sensitivity.

  5. 05

    Run downside cases for occupancy, expenses, rent growth and exit cap rate.

Common mistakes and risk checks

  • Underwriting to pro forma rents without a transition timeline.
  • Using seller expenses that omit market-rate management or reserves.
  • Relying on one exit cap assumption.

How to use and verify this guide

Use the comparison criteria and questions as a decision framework, then verify current prices, legal requirements, technical specifications, service terms and regulatory obligations with the primary or official references listed above. PROFENG explains its source, calculation and review principles on the methodology page.

QUALITY & CORRECTIONS

QA, changelog and corrections

Last QA update: 30 September 2026.

This page is covered by publication and metadata QA only unless a tool-specific automated verification status is displayed above. No named-expert review is claimed.

Changelog

30 September 2026 – source/indexation status, metadata and correction pathway reviewed. Engineering tools display the automated verification label only when they are inside the passing Part 3 verification scope.