Building mixed use
POST /v1/buildings/mixed-useBuildings holding BOTH residential and commercial units — the conversion and permitted-development cohort.
Same call over MCP
Mixed-use buildings in an areamixed_use_buildingsAuthenticate with an API key from the API & MCP Hub. The same call is available as an MCP tool at the same price.
Reference
What POST /v1/buildings/mixed-use returns
Hard to source elsewhere: it is a property of the building's unit mix, not an attribute of any single property.
UK only.
Inputs
Before you call it
- area_id
- The area id is the analytics area identifier, not a name or a GSS code. Call area_resolve with a place name or code ("Hackney", "E5") first; it is free and returns the id with the area's hierarchy. Where it gives both
area_idandanalytics_area_id, passanalytics_area_id.
Request
Calling POST /v1/buildings/mixed-use
curl -X POST "https://api.marketcode.ai/v1/buildings/mixed-use" \
-H "Authorization: Bearer $MARKETCODE_API_KEY"
-H "Content-Type: application/json" \
-d '{"area_id":"c0694b59-04d1-48ab-9a4c-c4f9d7b74f60","limit":3}'Send your API key as a Bearer token. Every response carries credits_charged and credits_remaining.
Inputs
Parameters
This endpoint takes no path or query parameters.
Request body
| Name | In | Type | Required | Description |
|---|---|---|---|---|
| area_id | Body | string | Yes | Marts area id from /areas/resolve |
| min_commercial | Body | integer | No | Default: 1 |
| min_residential | Body | integer | No | Default: 1 |
| limit | Body | integer | No | Default: 100 |
Response
What POST /v1/buildings/mixed-use returns for a real request
curl -X POST "https://api.marketcode.ai/v1/buildings/mixed-use" \
-H "Authorization: Bearer $MARKETCODE_API_KEY"
-H "Content-Type: application/json" \
-d '{"area_id":"c0694b59-04d1-48ab-9a4c-c4f9d7b74f60","limit":3}'{
"error": "HTTP 502",
"detail": "The origin web server returned an invalid or incomplete response to Cloudflare. This typically indicates the origin is overloaded or misconfigured."
}The call failed with these arguments; the status and message are shown rather than an invented body.
Price and licence
What it costs, and where the data comes from
Building mixed use costs 6 credits per successful call over MCP and over REST, and the two surfaces share one credit balance.
The price covers licensed records in the response, from Ordnance Survey. A call that fails is not charged.
Credits are granted on sign-up and bought in packs; the pricing page lists every call.
Sources
- Ordnance Survey
National Geographic Database (buildings, land and sites)
Used under licence from Ordnance Survey · Great Britain
Related
Endpoints used with Building mixed use
- Built-stock profile of an areaFree
area_stock_profileComposition of the built stock in an area: unit counts, HMO share, mixed-use share, median building height and footprint, solar penetration.Same category - Physical form of buildings3 credits
building_physicalPhysical form of the buildings a set of UPRNs sit in: height, volume, footprint area, floor count, construction and roof material, basement, green roof, solar panels, and the residential/commercial unit mix.Same category - Hex-binned density for mapsFree
h3_densityHex-binned stock and transaction density for map layers, at H3 resolution 8.Same category - Plot utilisation of land parcels6 credits
plot_utilisationLand parcels by size and how much of them is built on. Set `max_built_coverage` to 0.2 to find largely undeveloped plots.Same category
Glossary
Terms used here
- Permitted development: Changes an owner may make without a planning application, granted nationally by the General Permitted Development Order, subject to limits and to local withdrawal by Article 4.
- Mixed-use building: A building that holds both residential and commercial units; a property of the building's unit mix rather than of any single unit, and the conversion cohort.
FAQ
Questions about Building mixed use
How much does `mixed_use_buildings` cost?
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Building mixed use costs 6 credits per successful call over MCP and over REST, and the two surfaces share one credit balance. The price covers licensed records in the response, from Ordnance Survey. A call that fails is not charged.
Where do I get the area id?
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From area_resolve, which is free: give it a place name or postcode district and it returns the area id, centroid and hierarchy. mixed_use_buildings then takes that id.
How do I authenticate?
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Send your API key as a Bearer token in the Authorization header. Keys are created in the API & MCP Hub, shown once and revocable. Every response carries the credits charged and your remaining balance.
Is there an MCP version?
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Yes. The mixed_use_buildings tool on the MarketCode MCP server is the same call at the same price, signed in with OAuth rather than a key, so Claude, ChatGPT, Codex and Cursor can run it in a conversation.
Where does the data come from?
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Read from Ordnance Survey NGD. Coverage is the UK.
Can I store or republish the results?
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The response includes records we license from Ordnance Survey. Use them in your own analysis, reports and products; bulk redistribution of the raw records or building a competing dataset from them is not covered. Ask us if you need a redistribution licence.
Does `mixed_use_buildings` change anything?
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No. The tool is annotated read-only on the server, so it never writes to your data or ours and an assistant can call it without a confirmation step.
Try Building mixed use on a real address.
30-minute call. We'll provision a key and walk through the endpoint on your use case.