Commercial agencies and investors · Captured product example
What evidence belongs in the next commercial conversation?
A Manchester retail rating-based series shows why a market measure cannot stand in for a current lease.
Editorial interpretation of production responses captured on 6 September 2026. This is not a newly run workflow or a customer case study.
The decision to investigate
Which assumptions need verifying before using market evidence in an asset recommendation?
What the captured evidence shows
The captured retail series names Manchester, GSS code E08000003. Its basis is VOA rateable values, with a constant-sample ratio chain. The 2023 rating-list point is approximately 118.07 on a 2010-list base of 100; its antecedent valuation date is 1 April 2021.
Proposed next investigation
Request the asset’s actual lease terms, passing rent, review dates and comparable letting evidence. Use the rating series as labelled market context in that research agenda.
Limits of this example
This is a market-context excerpt for a commercial brief, not a completed asset appraisal. A rating-derived figure is not an asking rent or current lease fact. Manchester here is the named local-authority boundary, not Greater Manchester.
Cost and reproducibility
Each capture below shows the request, date and recorded charge when available. These excerpts do not measure an end-to-end workflow cost or research time. Supporting address, property, comparable and ownership calls may add charges; an unknown charge is not zero.
Responses are trimmed historical records. Source observation dates differ from capture dates. Product version is only known where recorded in the response. Re-run and review the complete result before relying on it.
commercial_rent_index_series
GET /v1/market/commercial-rent-index?sector=RETAIL&area=Manchester{
"country": "UK",
"query": {
"sector": "RETAIL",
"area": "Manchester"
},
"data": {
"scope": "city",
"sector": "RETAIL",
"area": {
"area_key": "E08000003",
"area_name": "Manchester"
},
"basis": "Derived from VOA rateable values, not from advertised rents. A rateable value is the Valuation Office Agency's assessment of the open-market rent a hereditamen…",
"series": [
{
"list_year": 2010,
"avd_date": "2008-04-01",
"value": 100,
"link_ratio": null,
"n_constant": null
},
{
"list_year": 2017,
"avd_date": "2015-04-01",
"value": 103.537755527743,
"link_ratio": 1.03537755527743,
"n_constant": 5090
},
{
"list_year": 2023,
"avd_date": "2021-04-01",
"value": 118.0693703386543,
"link_ratio": 1.1403508771929824,
"n_constant": 5706
},
"… 1 more"
],
"provenance": {
"source_table": "marts_facts.commercial_rent_index",
"kind": "rent",
"method": "constant_sample_rv_ratio_chain",
"base": "2010 rating list (antecedent valuation date 2008-04-01) = 100",
"n_points": 4,
"rating_lists": [
{
"list_year": 2010,
"avd_date": "2008-04-01"
},
{
"list_year": 2017,
"avd_date": "2015-04-01"
},
{
"list_year": 2023,
"avd_date": "2021-04-01"
},
"… 1 more"
],
"built_at": "2026-08-31T21:41:13.003756",
"available_sectors": null
},
"notes": [],
"source": "robosapien",
"cached": true,
"time_ms": 0.4
},
"credits_charged": 0
}A real response, captured from production and trimmed: arrays to three items, long strings shortened, volatile keys dropped.
Test it against a property you know.
Bring a real decision and compare the evidence with your current research process.
Bring a property to a demo