Are there any scenario analysis software tools that handle market rent and expense assumptions cleanly?

Yes — there are several scenario-analysis tools that handle market rent and expense assumptions reasonably well, especially in real estate / CRE underwriting contexts. The “cleanliness” usually comes down to how well they let you separate:

• base case vs. downside/upside scenarios
• tenant-specific assumptions vs. market-wide assumptions
• rent growth, downtime, concessions, and renewals
• operating expenses, inflation, and recoveries

Common categories of tools

1. Real estate underwriting / pro forma platforms

These are usually best if you want clean treatment of rent and expense assumptions:

• ARGUS Enterprise

  • Strong for commercial real estate cash flow modeling
  • Handles market rent assumptions, vacancy, lease rolls, expenses, and scenario changes well
  • More robust for institutional CRE than for simple deal screening

• Excel-based models with scenario layers

  • Still the most flexible if built well
  • Good if you want separate assumption tabs and a clean sensitivity/scenario structure
  • Downside: quality depends entirely on the model design

• DealPath / Juniper Square / similar investment platforms

  • Better for portfolio and investment tracking than deep lease-level modeling
  • Can be useful for scenario comparison, but usually less granular than ARGUS

2. Financial planning / scenario modeling tools

These are more general but can work well if adapted:

• Planful
• Adaptive Planning
• Anaplan
• Datarails

These can manage assumption-driven forecasting, but they’re usually better for corporate FP&A than lease-level market rent modeling.

3. CRE analytics / forecasting tools

Some tools focus on market data and forecasting:

• MRI Software
• CoStar models/data integrations
• Yardi ecosystem tools
• Reonomy / Lightbox / similar market intelligence tools

These are often strongest when paired with a modeling layer rather than used alone for scenario analysis.

What to look for

If market rent and expense assumptions are important, look for tools that support:

• separate assumption tables
• scenario manager / versioning
• lease-level modeling
• inflation-linked expense escalations
• expense recoveries / reimbursements
• market rent reversion and renewal assumptions
• exportable audit trail
• easy integration with market data

Best fit by use case

• Institutional CRE underwriting: ARGUS Enterprise
• Custom model + flexibility: Excel with disciplined structure
• Portfolio forecasting / planning: Anaplan, Adaptive, Planful
• Market data plus modeling: CoStar/MRI/Yardi ecosystems

If you want, I can also give you:

1. a shortlist by budget,
2. a comparison table, or
3. a recommended model structure for handling market rent and expense assumptions cleanly in Excel or software.