GET /api/v1/valuations/{uprn}/ Sale + rental Pro plan required

Instant Property Valuations for Any UK Address

Automated property valuation for any UK UPRN. Returns estimated market value using comparable sold prices and EPC floor area data, with confidence scoring (high / medium / low) and a comparable price range. Covers England and Wales.

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Free tier: 100 requests/month. No credit card required.

UK properties covered: 29M+
Comparable radius: 0.5 mi
Cache TTL: 24h
Valuation types: Sale + rent

UPRN in. Valuation out.

One request returns an estimated market value, confidence score, methodology used, and comparable price range. Pass ?type=rent to estimate monthly rental value instead.

✓ Price-per-sqm methodology when EPC floor area available

✓ Median comparable fallback for properties without floor area

✓ Confidence scoring: high / medium / low

✓ Rental yield model fallback when no rental comps available

curl "https://homedata.co.uk/api/v1/valuations/100022612238?type=sale" \
  -H "Authorization: Api-Key YOUR_API_KEY"

import requests

r = requests.get(
    "https://homedata.co.uk/api/v1/valuations/100022612238",
    params={"type": "sale"},
    headers={"Authorization": "Api-Key YOUR_API_KEY"},
)
val = r.json()
print(f"£{val['estimated_value']:,} ({val['confidence']} confidence)")

const res = await fetch(
  "https://homedata.co.uk/api/v1/valuations/100022612238?type=sale",
  { headers: { "Authorization": "Api-Key YOUR_API_KEY" } }
);
const val = await res.json();
console.log(`£${val.estimated_value.toLocaleString()} (${val.confidence})`);

Response fields

Field	Type	Description
estimated_value	integer \| null	Estimated market value in pounds. Null if insufficient data.
confidence	string	`high` / `medium` / `low`. High = 5+ comps with floor area, <30% spread.
method	string	`comparables` (price/sqm), `hedonic` (median price), or `yield_model` (rent only).
comparable_count	integer	Number of comparable properties used in the valuation.
price_per_sqm	integer \| null	Median £/sqm from comparables. Present when comparables method used.
floor_area_sqm	integer \| null	Subject property floor area from EPC register.
comparable_range	object \| null	`{"min": 410000, "max": 560000}` — price range of comparable properties used.
valuation_type	string	`sale` or `rent`. Rent returns estimated monthly figure.

Built for

🏠

Portfolio tools

Estimate current market value for an entire property portfolio. Batch by UPRN list, compare estimated vs purchase price.

💰

Mortgage brokers

Pre-qualification checks. Validate whether stated property value aligns with local market data before submitting applications.

📊

Conveyancing

Sanity-check asking prices. Flag outliers that need further investigation as part of due diligence workflows.

🏢

Estate agents

Back up valuations with data. Show clients the comparable evidence behind your market appraisal in seconds.

Related endpoints

Comparables API Property Prices API UPRN Lookup API EPC API

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Free tier includes 100 requests/month. No credit card, no friction.

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