Blog · 18 posts

Notes on underwritingand the build.

Sourcing, underwriting speed, and how we handle your deal data, written from the work.

Start with the source documents

Three practical acquisition workflows

See how Rook runs the workflow

Rent roll analysis

Check occupancy, lease status, concessions, delinquency, rollover, and model mapping.

Read the guide

T12 analysis

Validate the period, normalize revenue and expenses, and reconcile historical NOI.

Read the guide

CRE deal screening

Build a repeatable first-pass screen before a full underwrite consumes analyst time.

Read the guide
LatestSeptember 16, 2026 · 8 min read

How to evaluate AI underwriting software for commercial real estate

A practical evaluation framework for CRE acquisition teams comparing AI underwriting software, including source evidence, Excel workflows, and review controls.

Read the post

September 15, 2026 · 8 min read

Rent roll and T12 extraction: why the two files must be reconciled

A practical guide to rent roll and T12 extraction, normalization, reconciliation, and mapping the reviewed operating history into underwriting.

Read the post

September 14, 2026 · 7 min read

Offering memorandum analyzer: what AI should extract from an OM

Learn what an offering memorandum analyzer should extract, how it should cite the source, and which seller claims still require corroboration.

Read the post

September 13, 2026 · 8 min read

How to populate an Excel underwriting model with AI

A practical workflow for using AI to populate an Excel underwriting model while preserving formulas, sources, assumptions, units, and reviewability.

Read the post

September 12, 2026 · 9 min read

Commercial real estate deal screening software: a buyer’s guide

Compare CRE deal screening software by buy-box rules, source evidence, missing-data handling, Excel handoff, and acquisition-team workflow.

Read the post

September 11, 2026 · 7 min read

T12 analyzer guide: how to normalize a trailing operating statement

What a T12 analyzer or T-12 analyzer should check across periods, account mapping, signs, reconciliation, normalization, and model inputs.

Read the post

September 10, 2026 · 9 min read

Rent roll analysis checklist for multifamily underwriting

Use this rent roll analysis checklist to verify units, leases, occupancy, rents, concessions, delinquency, rollover, and model-ready outputs.

Read the post

September 9, 2026 · 8 min read

Multifamily underwriting software: the acquisition team buyer’s guide

A buyer’s guide to multifamily underwriting software covering document extraction, Excel models, source traceability, review controls, and implementation.

Read the post

September 8, 2026 · 7 min read

Real estate investment committee memo generator: what good output requires

How a real estate investment committee memo generator should connect the recommendation, model, source evidence, risks, sensitivities, and diligence.

Read the post

September 7, 2026 · 7 min read

Commercial real estate transaction screening checklist

Use this commercial real estate transaction screening checklist to assess mandate fit, source quality, first-pass economics, risks, and the next action.

Read the post

September 6, 2026 · 8 min read

Offering memorandum vs. rent roll vs. T12: how to reconcile the deal package

Learn how an offering memorandum, rent roll, and T12 differ, where their numbers overlap, and how to reconcile them before building a pro forma.

Read the post

September 5, 2026 · 7 min read

Why source traceability matters in AI real estate underwriting

Source traceability helps acquisition teams verify AI underwriting inputs, distinguish facts from assumptions, resolve conflicts, and defend decisions.

Read the post

July 10, 2026 · 3 min read

AI underwriting is not optional anymore

Your competitor is already using it. Every week you wait, you lose deals to a team that moves faster than you.

Read the post

July 1, 2026 · 4 min read

Screen every deal in 60 seconds, not a day

Why acquisition teams lose deals to speed, not diligence, and what changes when underwriting a first-look OM takes seconds instead of hours.

Read the post

June 28, 2026 · 3 min read

Your best people should not be doing data entry

You hired smart analysts to find good deals. Instead, they spend half their week typing numbers from a PDF into a spreadsheet. That is a waste of money and talent.

Read the post

June 18, 2026 · 5 min read

Debt maturity is the clearest sell signal in commercial real estate

Owners don't sell because they want to. They sell because a loan is coming due. Here's why tracking debt beats tracking listings.

Read the post

June 12, 2026 · 4 min read

Speed to offer wins the deal, not the best analysis

A good offer sent today beats a perfect offer sent next week. In this market, the team that answers fastest gets the first look, and the first look usually gets the deal.

Read the post

June 5, 2026 · 3 min read

Your deal flow is not training data

A plain explanation of how Rook handles the documents you upload: what we process, what we never do, and why that distinction matters for a business tool.

Read the post