Recipe 2 of 5 · document intelligence

Real Estate Document & Contract Automation: A Step-by-Step AI Recipe

You can automate real estate contract clause extraction today using Claude or ChatGPT and a Google Sheet. Here's the exact build, and where it stops working at scale.

8 min readBy the DealCase.ai team

Document-heavy processes share a common failure mode: the information exists but isn't findable when needed. Appraisals sit in email attachments. Lease terms live in a PDF five people have saved in five different folders. The contract deadline everyone missed was recorded somewhere — a note field, a spreadsheet, an email chain — but not in a place where a system could fetch it automatically.

The automation opportunity here isn't primarily about AI reading documents. It's about getting documents into a structure where they can be acted on and shared across a team. Once that structure exists, AI accelerates the review and drafting layers on top of it.

The recipe: structured document handling with AI review

1Establish a document database structure

In a Google Sheet, create a table with columns: Asset ID, Asset Name, File Name, Document Type, Document Date, Document Author, Closing Date, Deposit Amount, Payment Date, Suspensive Conditions, Suspensive Deadline, Penalties, Other Conditions.

2AI-assisted clause extraction

For any contract or lease that needs reviewing, paste the relevant sections into Claude or ChatGPT with the prompt below.

Prompt template — contract clause extraction You are reviewing a real estate contract on behalf of an institutional asset manager. Extract the following fields and return them as a structured list: (1) Closing date, (2) Deposit amount and payment date, (3) Suspensive conditions and their deadlines, (4) Penalties for late completion, (5) Any conditions that give either party a right of withdrawal. If a field is not present, say 'not specified'.

Paste the output into the Google Sheet document database. This gives you a queryable register of contract terms rather than a folder of PDFs.

3Populate the contract register

Review the AI-extracted clauses and confirm accuracy before populating the sheet. This step ensures the register reflects verified data, not raw AI output.

4Automated deadline alerts

In n8n, build a daily workflow that reads your contract terms sheet and checks for closing dates or suspensive condition deadlines falling within the next 30 days. When found, it sends a summary to the responsible manager.

5Draft population

Use Make or Zapier to pull confirmed contract data from your register and populate draft document templates automatically, reducing manual data entry at the drafting stage.

Build time: 4–6 hours. Step 1 may take longer depending on the current state of your file structure.
Where the DIY approach reaches its limit The practical limit is access control. A Google Sheet containing contract terms and a shared Drive folder don't support the granular permissions institutional operations require — some users should see their briefings but not the contract register; auditors need read-only access to a defined document set. A robust set of permission and logical access rules may require a dedicated platform.
DealCase.ai reads leases, scans and appraisals natively — text extraction and vision, no manual copy-paste — with row-level tenant isolation and field-level access control built in, not layered on top of a spreadsheet. See how →

FAQ

Can ChatGPT or Claude read real estate contracts accurately?

Yes, for extraction of well-defined fields — closing dates, deposit amounts, suspensive conditions — when you paste the relevant sections directly and ask for a structured list. Accuracy drops if you paste an entire multi-document bundle at once; work contract-by-contract and always have a human confirm the extracted values before they enter your register.

How do you extract lease terms with AI at scale?

The same clause-extraction prompt works per document, but doing it across dozens or hundreds of leases individually is where a manual DIY workflow becomes the bottleneck — not the AI's accuracy, but the lack of a queryable, permissioned register behind it.

What's the real limit of a Google Sheet contract register?

Access control, not scale. A shared spreadsheet has no field-level permissions — anyone with edit access sees every contract term, deposit amount and buyer detail, which doesn't satisfy institutional audit or segregation requirements.

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