UUNDERWRITER OS
Generated architectural model of multifamily buildings on a dark research desk

REAL ESTATE RESEARCH / OPEN SOURCE

Evidence before
conviction.

Give every deal a place to think. A practical research toolkit for firm context, source evidence and disciplined underwriting work.

MIT licensed · Local files · Your own AI and data access

Conceptual architectural imagery. Not an actual investment.

01   Retain the source02   Date the evidence03   Label the assumptions04   Own the decision

A TRACEABLE WAY TO WORK

From scattered documents
to a structured deal workspace.

The Python tools organize your work. The playbooks guide research. Your team supplies the evidence and reviews the conclusions.

Four stages: workspace with firm instructions; separate deal folders; original source files plus SHA-256 hashes; human review. Retaining a source does not verify its claims.
Generated process illustration. The workflow and file operations below describe the included tools.
01 / INITIALIZE

A home for your firm

Create firm instructions, references and a delivery manifest from a committed toolkit revision. Provider configuration starts empty.

02 / ORGANIZE

One folder per deal

Create an intake record and unfilled memo, market study and site templates. Existing deal slugs are protected from overwrite.

03 / RETAIN

Evidence you can trace

Copy a source document into the deal, recording its origin, publication date and SHA-256. Identical bytes reuse the source record.

04 / REVIEW

Judgment stays with you

Use the rigor standard to separate facts, assumptions and calculations. A retained document is not a verified claim.

THE WORKBENCH

Useful structure.
No invented certainty.

Built for acquisition and development research, with a multifamily underwriting reference and reusable deliverable templates.

Read the source repository ↗
EXECUTABLE / PYTHON 3

Workspace & evidence tools

Initialize a firm workspace. Create and list deals. Retain source files with provenance and checksums.

REFERENCE / MARKDOWN

Research playbooks

Deep research, site selection, market comps, investor sourcing, underwriting research, deal memos and pipeline guidance.

TEMPLATES / FILL WITH REAL INPUTS

Decision documents

Site one-pager, market study, investment memo and sources log. The model reference explains metrics and source requirements; it is not an automated spreadsheet calculator.

CHOOSE YOUR STARTING POINT

FREE / MIT LICENSE

Your toolkit.
Your workspace.

Download a blank starter package. Open it in your local AI workspace, read AGENTS.md and complete the firm intake with your own objectives.

Download starter ZIP ↓

Includes no customer data or completed analysis. Python 3 runs the local deal tools; AI subscriptions and data access are separate.

OPTIONAL / FUSION DATA COMPANY

Fit it to
your firm.

Explore a separately scoped configuration engagement for your research process, templates and provider setup. The underlying MIT toolkit remains free to use.

Request a configuration engagement →

Scope, access and acceptance criteria are agreed for each engagement. Downloading does not activate any service.

AFTER YOU EXTRACT THE ZIP

Start with a real deal.

From the extracted underwriter-starter directory, replace the name and slug with your actual deal. Read scripts/WORKSPACE-QUICKSTART.md for source import instructions.

python3 scripts/deal_workspace.py \
  --workspace . create \
  --name "Your actual deal" \
  --slug your-actual-deal

python3 scripts/deal_workspace.py \
  --workspace . list

Before you begin.

Is this a hosted underwriting application?

No. This is a downloadable toolkit of local Python utilities, Markdown instructions, references and templates. AI workflows depend on your chosen runtime and available authorized tools.

Does it include live property data or connected accounts?

No. The package configures no providers and includes no customer data. Catalog entries describe optional tools; your firm must supply and authorize access. Source retention does not verify the underlying claims.

Can I use and modify it commercially?

The toolkit is MIT licensed. Preserve the included license notice and review LICENSE for its terms. Optional configuration services are separate from the freely available software.

Does the download make investment decisions?

No. The initial templates are unfilled. Research, calculations and conclusions require current evidence and human review. This toolkit does not provide investment, legal, tax or securities advice.