# Deal Underwriting Model Build for Multifamily Acquisitions Analysts with CoStar

> AI pulls comps, normalizes the rent roll, builds the model from the firm's template, and stress-tests the sensitivities — analyst starts at judgment, not formatting. Purpose-built for teams running CoStar — uses the native API or agent integration so nothing leaves the system of record.

- **Tool:** [CoStar](https://calish.com/workflows/tool/costar/)
- **Role:** [Multifamily Acquisitions Analyst](https://calish.com/workflows/for/multifamily-acquisitions-analyst/)
- **Specialty:** Multifamily Acquisitions
- **Category:** Reporting & Analytics
- **Canonical URL:** https://calish.com/workflows/with/deal-underwriting-model-build-for-multifamily-acquisitions-analyst-with-costar/

## The Problem

Every new Multifamily Acquisitions deal starts with an 80-tab underwriting model that the analyst rebuilds from market comps in ARGUS Enterprise and rent rolls.

## What We Build in CoStar

AI pulls comps, normalizes the rent roll, builds the model from the firm's template, and stress-tests the sensitivities — analyst starts at judgment, not formatting. Purpose-built for teams running CoStar — uses the native API or agent integration so nothing leaves the system of record.

## CoStar Integration Approach

1. **Audit your CoStar configuration.** We map the specific CoStar objects, custom fields, and workflows the automation needs to touch for your multifamily acquisitions practice.
2. **Build on the CoStar API or agent.** Integration happens inside CoStar — no data leaves the system, no parallel tool for your team to learn, no license changes.
3. **Human-in-the-loop handoff.** Every automation routes exceptions back to a human in CoStar with full context — AI handles the 80%, your team owns the judgment calls.

## About This Workflow

- [Deal Underwriting Model Build for Multifamily Acquisitions Analysts](https://calish.com/workflows/deal-underwriting-model-build-for-multifamily-acquisitions-analyst/)
- AI pulls comps, normalizes the rent roll, builds the model from the firm's template, and stress-tests the sensitivities — analyst starts at judgment, not formatting.

## Other CoStar Automations

- [Loan File Assembly for Commercial Mortgage Brokers](https://calish.com/workflows/with/loan-file-assembly-for-commercial-mortgage-broker-with-costar/)
- [Conditional Approval Response for Commercial Mortgage Brokers](https://calish.com/workflows/with/conditional-approval-response-for-commercial-mortgage-broker-with-costar/)
- [Client Meeting Prep Pack for Commercial Mortgage Brokers](https://calish.com/workflows/with/client-meeting-prep-pack-for-commercial-mortgage-broker-with-costar/)
- [Portfolio Drift & Rebalance Alerts for Commercial Mortgage Brokers](https://calish.com/workflows/with/portfolio-drift-and-rebalance-alerts-for-commercial-mortgage-broker-with-costar/)
- [Quarterly Commentary & Client Letter for Commercial Mortgage Brokers](https://calish.com/workflows/with/quarterly-commentary-and-client-letter-for-commercial-mortgage-broker-with-costar/)
- [Communication Compliance Surveillance for Commercial Mortgage Brokers](https://calish.com/workflows/with/communication-compliance-surveillance-for-commercial-mortgage-broker-with-costar/)
- [Policy Renewal Outreach for Commercial Mortgage Brokers](https://calish.com/workflows/with/policy-renewal-outreach-for-commercial-mortgage-broker-with-costar/)
- [LOI & Term Sheet Drafting for Commercial Real Estate Brokers](https://calish.com/workflows/with/loi-and-term-sheet-drafting-for-commercial-real-estate-broker-with-costar/)

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