Built for
Built for acquisitions teams, owner-operators, sponsors, and investment teams screening enough inbound deals that manual document entry has become the bottleneck.
Multifamily underwriting software
Underwrite multifamily deals in the model your team already trusts
Rook turns a new deal package into a review-ready first pass without asking your team to replace its Excel model, assumptions, or approval process.
The outcome
Start with the documents you received. Finish with your own workbook populated, exceptions surfaced, and a clear path back to the source behind each material fact.
How it works
From source package to reviewable work
- 01
Upload the package and your model
Bring the offering memorandum, rent roll, T-12, supporting files, and the Excel workbook your team uses today.
- 02
Rook reads and reconciles the facts
The system extracts operating and unit-level data, compares overlapping sources, and flags gaps or conflicts instead of silently choosing one value.
- 03
Review a completed first pass
Rook maps the available facts and clearly labeled assumptions into your workbook so an analyst can review the deal rather than retype it.
- 04
Carry the work into committee
Keep the supporting evidence attached as the team screens the opportunity, revises assumptions, and prepares investment committee materials.
What the team gets
Fast enough to use. Clear enough to review.
Your Excel model stays in the workflow
Rook learns the structure of the workbook you already use rather than forcing every deal into a generic online calculator.
Documents remain reviewable
Inputs can be traced back to the source document and location used to produce them, helping reviewers check the work efficiently.
Missing data is visible
Required facts, proposed assumptions, and unresolved conflicts are separated so a plausible estimate is not mistaken for an observed fact.
One deal record, not loose files
The underwrite, evidence, notes, and generated materials stay connected as the opportunity moves through the acquisition process.
Why the details matter
A first pass designed for analyst review
Underwriting automation is most useful when it respects the way a firm already makes decisions. Rook is calibrated to the inputs, units, and conventions in your workbook, then uses that structure across incoming opportunities.
It does not turn uncertain data into false precision. If the OM and T-12 disagree, the conflict can be surfaced. If a required forward assumption is not in the source package, it can be identified as an assumption rather than presented as historical fact.
The result is a faster starting point with the context an acquisitions professional needs to validate it: the original documents, mapped model locations, source evidence, and an explicit record of what still needs judgment.
Frequently asked questions
Questions acquisition teams ask
Does Rook replace our multifamily underwriting model?
No. Rook is designed to work with the Excel model your team already uses. It maps extracted facts and clearly labeled assumptions into that workbook so your formulas, structure, and review process remain intact.
Which multifamily documents can Rook analyze?
A typical package can include an offering memorandum, rent roll, T-12 operating statement, Excel model, and related deal files. Available outputs depend on the documents and data provided for that opportunity.
How does Rook handle conflicting numbers?
Rook is built to preserve provenance and surface material conflicts for review. It distinguishes sourced historical facts from assumptions rather than hiding uncertainty behind a single unexplained value.
Who is the software for?
Rook is for commercial real estate acquisition teams, owner-operators, sponsors, and investment professionals who need to screen and underwrite a meaningful flow of multifamily opportunities.
Keep exploring
Related acquisition workflows
Bring a deal and the model you use today.
See how Rook handles the source package, the unresolved questions, and the workbook your team already reviews.