# Curtilo (curtilo.com)

Calculates permitted development extension limits and barn conversion floorspace caps from a plot's own measurements, without an application.

- Atlas card: https://inite.ai/en/atlas/curtilo.com
- Site: https://curtilo.com
- For: Small developers, land sourcers and self builders in England and Wales reading a plot before making an offer
- Categories: productivity
- Use 0/100 · alive 100/100

## Used for

- Check extension room under permitted development before making an offer
- Read barn conversion headroom under the Class Q dwelling cap
- Keep a record of each plot's constraints and offer

## Price

- from 49 GBP/month, free plan (read 2026-10-24 on https://curtilo.com/pricing/)

## For developers

- OpenAPI: https://curtilo.com/openapi.json (8 paths)
- MCP server: com.curtilo/site (namespace; open on 2026-10-24, 7 tools)
- Read 2026-10-24

## MCP server, measured daily

Server: https://curtilo.com/mcp, checked every day since 2026-10-24 (2 checks).

- Answered: measuring, 2 daily checks so far
- Median first answer: 1018 ms
- Sign-in: none
- Context its tool definitions take: about 674 tokens (7 tools)
- Tool definitions: C, 71/100
- Failing "params_described": 5 of 7 tools
- Failing "annotations": 7 of 7 tools
- Method: https://inite.ai/en/atlas/mcp/report

## Your data

- Certifications stated: none
- Read 2026-10-24

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Source: INITE Atlas, https://inite.ai/en/atlas/curtilo.com. JSON: https://inite.ai/api/atlas/curtilo.com. MCP: https://inite.ai/api/mcp (atlas_lookup).