---
title: "Free Combined Check"
method: POST
path: "/api/v1/feasibility/free/combined"
tags: ["feasibility"]
---

# Free Combined Check

`POST /api/v1/feasibility/free/combined`

## Request

- Base URL: `https://api.casaintelligence.com.au` (the document declares no server; this is the origin it was published from)
- URL: `https://api.casaintelligence.com.au/api/v1/feasibility/free/combined`
- Auth: none declared

Re-run the free check on the subject amalgamated with the selected
neighbouring lots, assessed as one site. Public, IP-rate-limited (Rung 1).

## Request body

- CombinedCheckRequest: Assess the subject parcel amalgamated with the selected neighbour lots.
  - `subject_property_id` string, required
  - `neighbour_property_ids` string[]

## Response `200`

Successful Response

- FreeFeasibilityResponse
  - `address` string, required
  - `display_label` string, nullable
  - `property_id` string, nullable
  - `cadastral_address` string, nullable
  - `suburb` string, nullable
  - `lga` string, required
  - `zone_code` string, nullable
  - `zone_name` string, nullable
  - `overlays` FeasibilityOverlay[]
    - `category` string, required
    - `severity` string, required
    - `name` string, nullable
  - `overlay_count` integer
  - `overlays_checked` string[]
  - `area_m2` number, nullable
  - `development_potential` string, required: yes, no, maybe, or unknown (we could not assess)
  - `casa_score` integer, nullable
  - `summary` string, required
  - `report_url` string, required
  - `zone_facts` ZoneFacts: Deterministic zone facts pulled straight from ci_planning_rules. Every field is optional — only facts actually recorded in the DB are populated. No guessing, no AI.
    - `min_lot_area_m2` number, nullable
    - `min_frontage_m` number, nullable
    - `max_site_cover_pct` number, nullable
    - `max_height_m` number, nullable
    - `max_storeys` integer, nullable
    - `height_source` string, nullable
    - `zone_max_height_m` number, nullable
    - `zone_max_storeys` integer, nullable
    - `height_overlay_label` string, nullable
    - `dual_occ_permitted` boolean, nullable
    - `dual_occ_assessment` string, nullable
    - `multi_unit_permitted` boolean, nullable
    - `multi_unit_assessment` string, nullable
    - `secondary_dwelling` boolean, nullable
    - `allows_subdivision` boolean, nullable
    - `scheme_name` string, nullable
    - `scheme_version` string, nullable
    - `irregular_lot` boolean
    - `lot_shape_note` string, nullable
  - `nearby_activity` NearbyActivity: DA activity within radius_m of the property over the last `years` years.
    - `radius_m` integer
    - `years` integer
    - `total_count` integer
    - `approved_count` integer
    - `median_days_to_decision` integer, nullable
    - `nearest` NearbyDA[]
      - `application_number` string, nullable
      - `description` string, nullable
      - `decision` string, nullable
      - `year` integer, nullable
      - `distance_m` integer, nullable
      - `lat` number, nullable
      - `lon` number, nullable
    - `intel_nuggets` string[]
  - `lat` number, nullable
  - `lon` number, nullable
  - `boundary_geojson` string, nullable
  - `boundary_status` string, nullable
  - `boundary_note` string, nullable
  - `score_percentile` integer, nullable
  - `capability_tiles` CapabilityTiles: The free checker's 1-5 capability tiles + the single disclaimer. `degraded` is the honest no-call message when zoning is unmapped, the zone's rules aren't held, or the record is a strata unit — the tile list is then empty rather than guessed.
    - `tiles` CapabilityTile[]
      - `key` string, required
      - `title` string, required
      - `verdict` string, required
      - `reason` string, required
      - `pathway` string, nullable
      - `pathway_label` string, nullable
      - `metric_facts` object
      - `grounding` object, nullable
    - `disclaimer` string, required
    - `degraded` string, nullable
    - `scheme_name` string, nullable
    - `scheme_version` string, nullable
  - `data_status` string
  - `degraded_components` string[], nullable
  - `degraded_reason` string, nullable
  - `amalgamation` AmalgamationInfo: Present on a combined (multi-lot) check — the site is an amalgamation of the subject plus the selected neighbouring lots, assessed as one site.
    - `lot_count` integer, required
    - `combined_area_m2` number, required
    - `property_ids` string[]
    - `addresses` string[]
    - `same_zone` boolean
    - `note` string, required
  - `overlays_definitive` boolean
  - `overlay_probe` string, nullable

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/casaintelligence/apis/casa-intelligence-engine.md) · [All operations](https://skmtc.dev/casaintelligence/apis/casa-intelligence-engine/llms.txt) · [OpenAPI document](https://skmtc.dev/casaintelligence/apis/casa-intelligence-engine/revisions/71d711039de0?raw)