Sale Valuation (AVM)

GET3 credits

GET/valuations/{uprn}/sale

Automated Valuation Model for UK residential sale price. Point estimate, ±10% bounds, and a confidence label.

Overview

Cascading confidence model:

High — last sold price with area-level growth applied.
Medium — EPC-derived sqft valuation.
Low — comparables fallback (nearest 7 similar properties).

Why this endpoint exists

Most enterprise valuation services are sold as bulk contracts with no usable REST endpoint.

This returns a defensible valuation in under a second, for any UK UPRN, with a clear confidence label so you can decide when to fall back to a human.

Path parameters

uprnstringRequired

Property UPRN.

Response Schema

uprn

String — echoes the input UPRN.

postcode

Property postcode.

value

Number (GBP) — point estimate.

lower_bound

Number (GBP) — ≈ 90% of value.

upper_bound

Number (GBP) — ≈ 110% of value.

confidence

"High" | "Medium" | "Low".

method

"last_sold_growth" | "sqft_estimate" | "comparables".

currency

Always "GBP".

Example

RequestLive key

curl https://pmi-api-beta-7tvvt.ondigitalocean.app/v1/valuations/72226528/sale \
  -H "Authorization: Bearer pmi_live_xxxxxxxxxxxxxxxx"

Try this endpoint with your own key

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Response200 OK

{
  "uprn": "72226528",
  "postcode": "LS6 3HN",
  "value": 278000,
  "lower_bound": 250200,
  "upper_bound": 305800,
  "confidence": "High",
  "method": "last_sold_growth",
  "currency": "GBP"
}

More about this endpoint

Use Cases

Show an "estimated value" on a property detail page, CRM, or buyer dashboard.

Bulk-revalue a portfolio monthly for asset reporting or LTV monitoring.

Power instant-offer flows ("we buy any house" products).