LeaseLineage app.leaselineage.com

Can AI replace LeaseLineage?

A solo broker can build the CRM, CSV prospecting, draft sequences, and pipeline in a weekend, but reliable contact data, Gmail and Outlook sync, deliverability, compliance operations, and brokerage collaboration are ongoing products.

Verdict: Half-bot · AI gets you partway; the hard part stays hardBuild time: multi-day
Half-bot

01What it costs

$79/moPro, monthly
$948per year at that price

Checked Aug 11, 2026 · source: app.leaselineage.com.

PlanMonthlyBilled yearlyWhat you get
Pro$79$69/moUnlimited campaigns and contacts; single-broker plan.
Brokerage$249$199/mo3 broker seats; unlimited campaigns and contacts.

02Could AI build it for you?

The core job: Import or research prospects, organize them by property or tenant need, draft a reviewed email sequence, and track replies and deal stages.

What a working version needs:

  • local web app
  • SQLite
  • CSV import
  • OpenAI API key
  • optional SMTP credentials

The personal CRM and drafting loop is buildable; the managed data and email operations are the subscription.

03What you'd give up

  • Apollo and Hunter prospect data
  • Gmail and Outlook OAuth and reply sync
  • managed sending and deliverability
  • brokerage team workspace
  • custom sending domains
  • hosted compliance and suppression operations

They pay to keep contact discovery, inbox connections, reply attribution, sending controls, suppression, reporting, and team access working while they focus on brokerage.

05The build prompt

Paste this into an AI coding tool (such as Claude, ChatGPT, Lovable or Replit) to build your own version.

prompt.txt
Build me a local commercial real estate outreach workspace to replace LeaseLineage. Requirements:

- A local web app using Node, Express, better-sqlite3, and server-rendered EJS,
  with a little vanilla JavaScript; store everything in data/leaselineage.db.
- Import prospects from CSV with company, contact, title, email, market, asset
  class, property, source, and notes; deduplicate by lowercase email.
- Show a prospect table with search, filters, tags, and a detail page containing
  notes, activity history, and a next-follow-up date.
- Let me create a campaign from filtered prospects and draft a three-step email
  sequence with the OpenAI API; keep its key and optional SMTP credentials in .env.
- Every generated message must remain a draft until I approve it. Support test-send,
  scheduled send, daily send limit, unsubscribe footer, and a suppression list.
- Poll one IMAP inbox every five minutes, match replies by Message-ID and email,
  stop remaining steps for that prospect, and show replies in a unified inbox.
- Track opportunities on a kanban board with New, Contacted, Replied, Meeting,
  Proposal, Won, and Lost columns; moving a card writes an activity event.
- Provide CSV exports for prospects, campaigns, activities, and opportunities.
  Bind to localhost only; no accounts or telemetry beyond email and OpenAI calls.
- Out of scope: contact-data enrichment, Gmail or Outlook OAuth, multi-user teams,
  custom sending domains, and legal compliance guarantees.
- Include a README with setup, CSV columns, .env variables, IMAP app-password notes,
  backup instructions, and a warning that I remain responsible for lawful outreach.

06Open-source starting points

  • Mautic: Open-source marketing automation platform that covers campaigns and contact management, without the commercial real estate workflow.
Sponsor slot · openFeatured alternative to LeaseLineage. A labeled card for one relevant tool.
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App prices, verdicts, alternatives and build prompts are adapted from Can I Vibecode It? (MIT License, © 2026 Rob Hallam). Each price shows the date it was checked and its source. Prices change; confirm on the vendor's site before you decide.