Eigenheim Invest – Berlin Real Estate Market

Eigenheim Invest – Berlin Real Estate Market MCP

TL;DR – A free, public, read-only MCP server with live Berlin property prices (€/m² for apartments and houses), rental yields, 2026 standard land values (Bodenrichtwerte), population forecast 2040, official notary transaction data and current listings from Eigenheim Invest.

• Endpoint: https://eigenheim-invest.de/mcp/ (Streamable HTTP)
• Auth: none – no API key, no login
• Works with: Claude (Desktop, Code, Web), ChatGPT (Apps / Plugins), OpenAI Codex, Cursor, VS Code
• MCP Registry ID: io.github.magicSEO/eigenheim-mcp (official MCP Registry)
• Live data page: eigenheim-invest.de/immobilienpreise-berlin/

Contents

1. Quick start · Plugins
2. Screenshots
3. What can you ask?
4. Available tools
5. Data sources
6. Privacy & usage
7. About

Quick start

Claude Code

claude mcp add --transport http eigenheim https://eigenheim-invest.de/mcp/

Or install it as a Claude Code plugin:

/plugin install eigenheim-market --marketplace magicSEO/eigenheim-mcp

Claude Desktop / Claude.ai

Settings → Connectors → Add custom connector

• Name: Eigenheim Invest Market
• URL: https://eigenheim-invest.de/mcp/

OpenAI Codex CLI

codex mcp add eigenheim --url https://eigenheim-invest.de/mcp/

or in ~/.codex/config.toml:

[mcp_servers.eigenheim]
url = "https://eigenheim-invest.de/mcp/"

Plugins

This repository is also a ready-to-install plugin for Claude Code and OpenAI Codex. Both plugins connect to the same read-only MCP server and add the skill berlin-market-data (always quote source and date, never invent numbers).

Claude Code plugin

/plugin marketplace add magicSEO/eigenheim-mcp
/plugin install eigenheim-market@eigenheim-invest

Codex plugin

Install from the awesome-codex-plugins marketplace once listed, or clone this repository and add it as a local plugin in Codex. Quality check: HOL AI Plugin Scanner 3.49.0 – 100/100, no findings.

Security policy: SECURITY.md

ChatGPT (Apps / Plugins)

Custom GPTs retire on 11 Dec 2026. This server is MCP-native, so it works as a ChatGPT app (plugin) without any extra API. Submission to the ChatGPT app directory: see chatgpt-app/SUBMISSION.md.

1. Settings → Apps (or Plugins) → Advanced settings → enable Developer mode.
2. Create app:
   • Name: Eigenheim Invest Market
   • MCP Server URL: https://eigenheim-invest.de/mcp/
   • Authentication: No authentication
3. In a new chat, select the app via + → Developer mode and ask your question.

Cursor (.cursor/mcp.json)

{
  "mcpServers": {
    "eigenheim": { "url": "https://eigenheim-invest.de/mcp/" }
  }
}

VS Code (.vscode/mcp.json)

{
  "servers": {
    "eigenheim": { "type": "http", "url": "https://eigenheim-invest.de/mcp/" }
  }
}

Tip: Use the URL with trailing slash (/mcp/). Without it the server redirects, which some clients do not follow.

Screenshots

Real responses from the live server (captured 16 Oct 2026):

What can you ask?

Ask in English or German – the assistant picks the right tool.

Prices & trends

• "What is the average price per m² for apartments and houses in Zehlendorf compared to Berlin?"
• „Was kostet ein Quadratmeter in Prenzlauer Berg aktuell?"
• "Which Berlin neighbourhood is the most expensive for apartments right now?"

Rental yield & investment

• "Calculate the gross rental yield and price multiplier for an apartment in Steglitz."
• „Lohnt sich eine Wohnung in Neukölln als Kapitalanlage? Rechne mit 5.000 €/m² und 14 € Miete."

Land values (Bodenrichtwerte 2026)

• "What are the 2026 standard land values in Dahlem and Nikolassee?"
• „Wie hoch ist der Bodenrichtwert in Wannsee?"

Market & demographics

• "How many notarised property sales were there in Berlin in H1 2026?"
• "Which Berlin localities have the highest and lowest apartment prices right now?"
• „Welche Bezirke wachsen laut Senatsprognose bis 2040 am stärksten?"

Listings

• "Are there houses for sale in Berlin Southwest or Falkensee?"
• „Zeig mir Wohnungen unter 600.000 € mit mindestens 3 Zimmern."

Guides

• "What are the closing costs (Kaufnebenkosten) when buying in Berlin?"
• „Was muss ich beim Verkauf einer geerbten Immobilie beachten?"

Available tools

All tools are read-only. Every answer includes source, date and a link to the matching page on eigenheim-invest.de.

Data sources

• Asking prices: Rankimmo, updated daily (offer data, not notarised prices)
• Rents: IBB Wohnungsmarktbericht 2025
• Population forecast: Senatsverwaltung Berlin, Bevölkerungsprognose 2024–2040
• Notary transactions: Gutachterausschuss Berlin, market report H1 2026
• Land values: Bodenrichtwerte 2026
• Listings: Eigenheim Invest (current active offers)

Methodology: eigenheim-invest.de/immobilienpreise-berlin/#datenquellen

Privacy & usage

• No API key, no tracking of prompts, no personal data.
• Listings show only public marketing information – no exact addresses, no seller data.
• Free for personal and commercial use. Please cite Eigenheim Invest with a link when publishing figures.
• Values are market indicators, not a valuation. For a property-specific value use the free valuation.

About

Eigenheim Invest is a real estate agency for Berlin Southwest and the surrounding Brandenburg area (Zehlendorf, Dahlem, Nikolassee, Schlachtensee, Wannsee, Kladow, Falkensee, Teltow, Stahnsdorf, Kleinmachnow, Michendorf).

• Website: eigenheim-invest.de
• Berlin property prices by district: eigenheim-invest.de/immobilienpreise-berlin/
• Free valuation: eigenheim-invest.de/immobilienbewertung/
• Contact: info@eigenheim-invest.de

License

Plugin and configuration files: MIT. Documentation and market data: CC BY 4.0 (attribution: Eigenheim Invest). Data remains property of the respective sources.