Same property data.
Real-time API, not bulk supply.
Nestdata sells UK property data as bulk feeds — 200+ attributes, quote-based pricing, annual contracts. Homedata delivers the same categories of data as a real-time REST API: EPC, price history, flood risk, and 16 more endpoints. Self-serve signup. Free tier. No sales call to get started.
Free tier — 100 API calls/month. No credit card required.
What Nestdata does — and the gap it leaves
Nestdata is a B2B property data supplier. They aggregate 200+ attributes across 29M UK properties and sell the data as bulk feeds — one-off or annual — to marketing teams, direct mail companies, and enterprise data consumers. They have genuinely unique datasets: conservatories, heat pumps, mover alerts ("Just Moved In"), EV charger readiness.
What they don't have is a developer API. No self-serve signup. No public documentation. No free tier. If you want to look up a single property in real-time, Nestdata can't help you — they sell data in bulk, not per-call.
Homedata fills this gap. The same core data categories — EPC, price history, property attributes, environmental risk — available as individual API calls. You don't need to buy a dataset of 29M properties to get the EPC score for one address.
Nestdata's triggers → Homedata's API equivalent
Nestdata built its business on triggered data signals — "Just Moved In", "New EPC", "For Sale". Here's how you get the same intelligence via API.
"For Sale" / "Just Listed"
Nestdata sends mailing triggers when properties are listed. With Homedata's live-listings endpoint, you can poll for new listings by outcode or property type — and build your own alerting pipeline with exactly the filters you want.
Live Listings API →"New EPC" trigger
Nestdata flags properties with new EPC certificates. Homedata's EPC endpoint returns the latest certificate date — poll properties and compare dates to detect new certificates. Same signal, your own pipeline.
EPC API →"Just Sold" / price changes
Nestdata sells sold-price triggers. Homedata's property sales endpoint returns full Land Registry transaction history per UPRN — compare against previous lookups to detect new sales. Price trends endpoint gives area-level movement.
Property Prices API →"Solar Panel Ready"
Nestdata identifies solar-suitable properties for installer marketing. Homedata's solar assessment endpoint calculates PV potential, payback, and CO₂ savings per property — much richer than a binary "ready" flag. Actual kWh, actual £ savings.
Solar Assessment API →Environmental risk
Nestdata includes some environmental data in their attribute set. Homedata has dedicated endpoints for flood risk (NAFRA2), radon, noise, landfill, coal mining, air quality, and invasive plants — all queryable per UPRN in real-time.
Flood Risk API →"New Planning Application"
Nestdata doesn't have planning triggers. Homedata does — our planning applications endpoint covers national planning data. Search by postcode, filter by decision status, application type, and date range. A data advantage over Nestdata.
Planning API →Nestdata vs Homedata
Bulk supply vs real-time API. Different delivery models for the same underlying property data.
| Nestdata | Homedata | |
|---|---|---|
| Delivery model | Bulk data supply — CSV/files, one-off or annual | Real-time REST API — per-call, on-demand |
| Pricing | Quote-based — no public pricing | Public pricing — Free → £49 → £149 → £349/month |
| Free tier | No | Yes — 100 API calls/month, no credit card |
| Self-serve signup | No — sales call required | Yes — API key in 60 seconds |
| API documentation | None publicly available | Full docs, OpenAPI schema, SDK examples |
| Property attributes | 200+ attributes (broad coverage) | 55+ fields at full enrichment level |
| EPC data | ✓ (in bulk data) | ✓ via API — per-UPRN, real-time |
| Sold price history | ✓ (in bulk data) | ✓ via API — full LR history per UPRN |
| Live listings | ✓ (For Sale trigger) | ✓ via API — aggregated from portals |
| Mover alerts / triggers | ✓ (Just Moved In, For Sale, etc.) | Build your own — live-listings + sales polling |
| Direct mail integration | ✓ (automated mailings) | Not available — API only, integrate your own |
| Flood risk | Limited | ✓ — NAFRA2, 7 risk types, per UPRN |
| Planning applications | No | ✓ — national coverage |
| Solar assessment | "Solar Panel Ready" flag only | ✓ — full PV calculation, payback, kWh, CO₂ |
| Comparables | No | ✓ — PostGIS proximity, bedroom-match sorting |
| Conservatories / heat pumps | ✓ (unique databases) | Not available yet |
| Interactive playground | No | ✓ — test all 19 endpoints in-browser |
What Nestdata delivers as a CSV, we deliver as JSON
One API call. Real-time. For any of 29M UK properties.
Full property record — the core of what Nestdata sells as bulk data, available per-property in real-time.
curl "https://api.homedata.co.uk/api/address/retrieve/100023336956/?level=property" \ -H "Authorization: Api-Key YOUR_API_KEY"
{
"uprn": 100023336956,
"address": "10 DOWNING STREET, LONDON",
"postcode": "SW1A 2AA",
"latitude": 51.5034,
"longitude": -0.1276,
"bedrooms": 4,
"bathrooms": 2,
"property_type": "Terraced",
"epc_floor_area": 196,
"current_energy_efficiency": 74,
"tenure": "Freehold",
"council_tax_band": "H"
}
Full solar potential — Nestdata has a binary "Solar Ready" flag. We return actual generation, savings, and payback numbers.
curl "https://api.homedata.co.uk/api/solar-assessment/100023336956/" \ -H "Authorization: Api-Key YOUR_API_KEY"
{
"system_size_kwp": 3.5,
"annual_generation_kwh": 4787,
"annual_savings_gbp": 673,
"payback_years": 19.7,
"co2_reduction_kg": 694,
"roof_area_m2": 42.3,
"panels_count": 10,
"roof_pitch_degrees": 35,
"roof_orientation": "South-West"
}
What developers build with it
Nestdata's customers buy data for marketing. Homedata's customers build products.
Lead enrichment pipelines
Take an inbound lead address, enrich it with EPC, bedrooms, flood risk, sold history, council tax. The real-time version of what Nestdata sells as a batch file — but integrated into your CRM at point of capture.
Solar installer lead scoring
Nestdata sells a "Solar Ready" flag. Homedata's solar endpoint returns actual generation potential, payback, CO₂ savings, roof area. Score and rank properties by ROI — far more useful for targeting than a binary ready/not-ready.
Property portals & listings
Enrich listing pages with flood risk, EPC trends, planning activity, price history, and comparables. Data that buyers want but portals don't show — sourced in real-time, not from a stale annual data dump.
Mortgage & conveyancing automation
Automated property checks at point of application — flood risk, planning activity, EPC, council tax, comparables. The searches conveyancers do manually, delivered via API in seconds.
Retrofit & energy efficiency targeting
Use EPC scores, construction age bands, and solar assessment data to identify and prioritise properties for insulation, heat pump, or solar PV campaigns. Better targeting than Nestdata's bulk approach.
Investment analysis tools
Price trends, comparables, live listings, and council tax data — the inputs for rental yield calculators, buy-to-let scorecards, and area comparison tools. All via API, all real-time.
Where Nestdata is genuinely different
Nestdata isn't a competitor in the traditional sense — they serve a different buyer. Here's where their model wins:
Bulk data for direct mail
If you need a CSV of 50,000 properties matching specific criteria for a direct mail campaign, Nestdata's batch model is purpose-built for this. Homedata is per-call — you'd need to query each property individually. For bulk marketing, Nestdata is the right tool.
Unique property attributes
Nestdata has datasets we don't: conservatories, heat pumps, loft conversions, EV charger readiness, "Just Moved In" mover signals. These are proprietary data points built from multiple sources. We'll build some equivalents over time, but today they have breadth we don't.
Automated mailing triggers
Nestdata connects data signals directly to postal mail — "this property just listed → print and send a letter automatically." We're an API — you get the signals, but you need your own mailing integration. For teams that want zero-code direct mail, Nestdata is simpler.
The bottom line: if you're a marketing team buying bulk data for direct mail, Nestdata is built for you. If you're a developer building an application that needs real-time property data, Homedata is the better fit.
Other alternatives you might be considering
PropertyData
Web app + API for valuation, yield analysis, and area stats. Better developer experience than Nestdata, but no free tier and credit-based pricing. Good for valuation use cases specifically.
PropertyData vs Homedata →Searchland
Map-first land sourcing SaaS at £195/seat/month. No public API. Excellent for site identification and planning research, but not a developer tool. If you need data in your own product, you need an API.
Searchland vs Homedata →Land Registry (HMLR) open data
Free bulk downloads for sold prices. Updated monthly, no API, no property attributes beyond transaction data. Good for analytics; not for product integrations.
getAddress() — now closed
getAddress.io was shut down following a Royal Mail IP infringement ruling in October 2025. Former users are actively migrating — Homedata covers address lookup, UPRN resolution, and full property enrichment, all with a free tier and no demo required.
getAddress() alternative →Loqate (GBG)
Enterprise address validation platform with no public pricing — requires a demo call, no developer self-serve. Better suited to large enterprise compliance use cases. Homedata has a free tier and self-serve signup, no demo required.
Loqate vs Homedata →Ideal Postcodes
Good developer experience, PAYG pricing (2.8–4.5p per lookup), UPRN included. Returns address + UPRN only — no property enrichment. Solid choice if you just need clean addresses; Homedata adds EPC, beds, type, flood risk and more.
Ideal Postcodes vs Homedata →Zoopla API
Zoopla's Property API was a partner product that was never self-serve, and is now closed to most developers. If you're looking for live listings data or property intelligence with self-serve access and a free tier, Homedata covers all the same use cases.
Zoopla API alternative →Stop buying data in bulk. Start querying it.
Get your free API key in under 2 minutes. EPC, flood risk, price trends, solar assessment — all 19 endpoints, real-time. No sales call. No annual contract.
Free tier: 100 API calls/month. Address find costs just 2 calls. Cancel anytime.