Generate real-estate marketing images and videos with OpenAI and Google Drive

🏡 Automated Real-Estate Content Generation Workflow

This n8n workflow automates turning short user ideas into production-ready real-estate marketing assets (photorealistic images and optional 360° videos). A form submission seeds a prompt board → an LLM refines prompts → the refined prompt is sent to an image/video generator → assets are uploaded to Google Drive and an approval email is sent so stakeholders can accept/reject outputs.

⚙️ How It Works (High Level)

1. Trigger: User submits the ideation form (On form submission).

2. Record: The raw idea is appended to Google Sheets (Append row in sheet).

3. Refine: An AI agent (LangChain/OpenAI) refines the prompt into a photorealistic prompt and produces captions & variants (AI Agent).

4. Store Refined Prompt: Update the sheet with the improved prompt (Append or update row in sheet).

5. Generate Asset: Send improved prompt to OpenAI image/video generation nodes (Generate an image2 / Generate a video).

6. Upload & Share: Upload resulting files to Google Drive (Upload file / Upload file1) and set sharing permissions (Share file / Share file1).

7. Approval Flow: Email the requester with the asset + improved prompt and wait for approval (Send message and wait for response).

8. Decision: A Switch node routes approved outputs to final storage/notifications and rejected ones back for rework (or sends a failure email).

9. Video Branch: Separate flow → refine → HTTP → video generator → upload → share → update sheet (parallel video pipeline).

Quick Setup Guide

👉 Demo & Setup Video 👉 Sheet Template 👉 Course

🔑 Nodes of Interest (Quick Reference)

• On form submission — Form trigger for ideation input
• Append row in sheet — Initial recording to Google Sheets
• AI Agent — LangChain/OpenAI agent for prompt refinement
• Generate an image2 — OpenAI image generation node
• Upload file / Upload file1 — Google Drive upload nodes
• Share file / Share file1 — Set file sharing permissions
• Send message and wait for response — Gmail approval workflow
• Switch — Approval vs rejection routing
• Form + AI Agent1 + Generate a video — Video generation pipeline
• Wait / Wait1 — Handle long-running generation
• OpenAI Chat Model / OpenAI Chat Model1 — LLM configuration nodes

🔐 What You'll Need (Credentials & Access)

• Google Sheets OAuth2 (sheet access)
• Google Drive OAuth2 (file storage)
• OpenAI API Key (image/video + LLM)
• Gmail OAuth2 (email approvals)
• n8n webhook/public form access
• Optional: External HTTP endpoints for video processing

💡 Tip: Store credentials securely in n8n credential manager and avoid hardcoding secrets.

⚡ Recommended Settings & Best Practices

• Model & Prompt Control: Use strong system prompts enforcing photorealism and real-estate context.

• Rate Limits & Retries: Add retry logic with exponential backoff for API calls.

• Wait Times: Use Wait nodes for long video generation tasks.

• File Size & Format: Standardize image sizes (e.g., 1792×1024) and compress videos.

• Sharing Permissions: Use view-only links for approvals.

• Logging & Observability: Track prompt, model, timestamp in Google Sheets.

• Security: Use credential manager, rotate API keys regularly.

• Cost Control: Monitor OpenAI usage and apply limits.

• Input Validation: Validate prompt length and required fields.

🚀 Customization Ideas

• Property type presets (apartment, villa, office, etc.)
• Auto-generate captions, hashtags, and listing descriptions
• Add AI moderation before sharing assets
• Replace Google Drive with S3 / Cloudflare R2 + CDN
• Auto-post approved assets to social media or CMS
• A/B test prompts for performance optimization
• Multi-language prompt support
• Slack/Telegram approval dashboard instead of email

🏷️ Tags

n8n, automation, real-estate, prompt-engineering, OpenAI, DALL·E, video, google-sheets, google-drive, gmail, approval-flow, image-generation