API
Property Checker

UK Property Data API

Create property tools, automate your business or build your own commercial property product with the PropertyChecker API.

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Access trusted UK property data through a simple JSON API.

Why should I use the Property Checker API?

  • No contract or minimum spend
  • Make your first API call in minutes
  • Use our data in your own commercial products
  • Costs from 1p per API call
  • Fully managed API platform (no server required)

Our self-service API platform allows you to get building in minutes.

Simple, pay-as-you-go pricing. Start from just 1p per API call.

What could you build with our Property Data API?

Build a property website or app

Create property research tools, house-price services, landlord tools, investment calculators and customer-facing applications.

Build with AI

Describe the property tool you need to your preferred AI coding assistant and connect it to PropertyChecker’s API. Build custom internal tools without having to source and maintain the underlying property datasets yourself.

Automate your business

Enrich customer records, research properties automatically, generate reports and integrate property information into existing workflows.

Build a commercial product

Use property data as part of a paid website, application or software product and create a new revenue stream.*

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Developer-friendly by design

With over 12 years experience developing APIs, we know how much time can be wasted on infrastructure instead of building your product.

  • No server required, your app can call our API directly
  • Set API call limits to protect against unexpected costs
  • Set client rate limits to prevent excessive or unauthorised usage.
  • Enable caching for faster responses and lower costs
  • Real-time cost tracking
  • Detailed logs for usage tracking

Focus on your product, not the data

Our UK Property Data API combines data from official UK sources behind a single API, so you can spend your time building features rather than managing databases.

  • One API for multiple property data sources
  • No datasets to download or maintain
  • No data pipelines to maintain
  • Only pay for the data you use
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What data is included in our Property Data API?

Our property API includes officially licenced data from trusted sources such as HM Land Registry, the Government EPC Register, Ordnance Survey, Ofcom and other third-party commercial data providers.

Find Addresses from a Postcode
Enter a postcode a retrive a list of addresses.
Previous Sold Prices
Access all recorded property sales from HM Land Registry records since 1995.
Property Age
Check the age of a property and find ouy when it was build.
Estimated Property Values
Get instant estimated current values for residential properties in England and Wales.
Energy Performance Certificate (EPC) Data
Check if a property has a valid EPC and retrive the information recorded by the assesor.
Registered Lease Data
Check if a property is leasehold or freehold and get the remaining lease term and expiry date.
Order Documents from HM Land Registry
Order official documents from HM Land Registry, including title registers, title plans, leases, charges and more.
Council Tax Data
Check what band a property is in and how much the council tax costs.
Comparable Property Sales
Find similar propeties that have sold recently nearby.
Restrictive Covenants
Check if a property has a restrictive covenant.
Rental Price Estimates
Get instant rental price estimates using data from similar properties in the local areas.
Energy Performance Recommendations
Check the energy performance recommendations for a property.
Property Construction Type Information
Check the construction type of a property including walls, floors and roof construction type.
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Example JSON Data

Here's an example of the data we can return via our API.

If you require the data in a different format, or need data that isn't included here, please contact us directly and we'd be happy to help.

{
  "property": {
    "address": {
      "paon": "24",
      "street": "Birch Avenue",
      "town": "Bristol",
      "district": "Bristol",
      "county": "Somerset",
      "postcode": "BS4 2PL",
      "description": "24, Birch Avenue"
    },
    "type": "Semi Detached",
    "tenure": "Leasehold",
    "yearBuilt": 2006,
    "transactionCount": 1,
    "standardPriceTransactionCount": 1,
    "additionalPriceTransactionCount": 0,
    "highestPricePaid": {
      "value": 189995,
      "amount": "£189,995"
    },
    "lowestPricePaid": {
      "value": 189995,
      "amount": "£189,995"
    },
    "transaction": [
      {
        "date": {
          "full": "22 December 2006",
          "short": "22 Dec 06",
          "iso": "2006-12-22 00:00:00.000Z",
          "unix": 1166745600,
          "year": 2006
        },
        "pricePaid": {
          "value": 189995,
          "amount": "£189,995"
        },
        "tenure": "Leasehold",
        "isNewBuild": true,
        "category": "Standard",
        "priceChange": {
          "value": 0,
          "percentageValue": 0
        }
      }
    ],
    "dataSource": "internal",
    "standardTransactions": [
      {
        "date": {
          "full": "22 December 2006",
          "short": "22 Dec 06",
          "iso": "2006-12-22 00:00:00.000Z",
          "unix": 1166745600,
          "year": 2006
        },
        "pricePaid": {
          "value": 189995,
          "amount": "£189,995"
        },
        "tenure": "Leasehold",
        "isNewBuild": true,
        "category": "Standard",
        "priceChange": {
          "value": 0,
          "percentageValue": 0
        }
      }
    ],
    "age": "2006"
  },
  "leases": [
    {
      "regOrder": 2,
      "leaseDate": {
        "full": "22 December 2006",
        "short": "22 Dec 06",
        "iso": "2006-12-22 00:00:00.000Z",
        "unix": 1166745600,
        "year": 2006
      },
      "term": "155 years from 1 May 2006",
      "alienationClause": true,
      "address": "24 Birch Avenue, Anytown AT1 2BC",
      "exactMatch": true,
      "removed": false,
      "uprn": "10012345678",
      "tenure": "Leasehold",
      "length": {
        "totalYears": 155,
        "startDate": "May 2006",
        "endDate": "May 2161",
        "yearsRemaining": 134,
        "leaseExpiresSoon": false,
        "leaseTermFormat": 1
      }
    }
  ],
  "restrictiveCovenants": [
    {
      "address": "24 Birch Avenue, Anytown AT1 2BC",
      "removed": false,
      "tenure": "Leasehold"
    }
  ],
  "epc": {
    "constructionAgeBand": "2003-2006",
    "currentEnergyRating": "C",
    "potentialEnergyRating": "B",
    "propertyType": "House",
    "builtForm": "Semi Detached",
    "totalFloorArea": {
      "value": 84,
      "amount": "84m²"
    },
    "localAuthority": "Bristol",
    "constituency": "Bristol City",
    "floorDescription": "Solid, Insulated (Assumed)",
    "windowsDescription": "Fully Double Glazed",
    "heatDescription": "Boiler And Radiators, Mains Gas",
    "hotwaterDescription": "From Main System",
    "wallsDescription": "Cavity Wall, As Built, Insulated (Assumed)",
    "roofDescription": "Pitched, Insulated (Assumed)",
    "lightingDescription": "Low Energy Lighting In 21% Of Fixed Outlets",
    "hasMainsGas": true,
    "lightingCostCurrent": {
      "value": 97,
      "amount": "£97"
    },
    "lightingCostPotential": {
      "value": 54,
      "amount": "£54"
    },
    "heatingCostCurrent": {
      "value": 343,
      "amount": "£343"
    },
    "heatingCostPotential": {
      "value": 352,
      "amount": "£352"
    },
    "hotWaterCostCurrent": {
      "value": 119,
      "amount": "£119"
    },
    "hotWaterCostPotential": {
      "value": 75,
      "amount": "£75"
    },
    "numberHeatedRooms": 3,
    "numberHabitableRooms": 3,
    "tenure": "Rented (Private)",
    "lodgementDate": "25 January 2014",
    "expiryDate": "25 January 2024",
    "status": {
      "timestamp": "2024-01-25T00:00:00+00:00",
      "difference": -956,
      "status": "Fail",
      "message": "EPC expired 3 years ago.",
      "boolValue": false,
      "stringValue": "25 Jan 2024"
    },
    "mainsGasFlag": "N",
    "energyTariff": "Single",
    "mainFuel": "mains gas (not community)",
    "uprn": "10012345678",
    "lmkKey": "0000-0000-0000-0000-0000"
  },
  "epcRecommendations": [
    {
      "improvementDescription": "Solar photovoltaic panels, 2.5 kWp",
      "estimatedCost": "£9,000 - £14,000"
    },
    {
      "improvementDescription": "Solar water heating",
      "estimatedCost": "£4,000 - £6,000"
    },
    {
      "improvementDescription": "Low energy lighting for all fixed outlets",
      "estimatedCost": "£55"
    }
  ],
  "position": {
    "x": 295553.68,
    "y": 91316.7,
    "lat": 51.5074,
    "long": -0.1278
  },
  "comparablePropertyInformation": {
    "currentProperty": {
      "address": "24, Birch Avenue",
      "currentEnergyRating": "C",
      "potentialEnergyRating": "B",
      "propertyAge": "2006",
      "propertyType": "House",
      "floorArea": "84",
      "habitableRoomCount": 3,
      "heatedRoomCount": 3,
      "councilTax": {
        "band": "B",
        "price": "£1,940.84",
        "address": "24, Birch Avenue"
      }
    },
    "matchingProperties": [
      {
        "address": "26 Birch Avenue, Anydistrict, Anytown",
        "currentEnergyRating": "B",
        "potentialEnergyRating": "B",
        "propertyAge": "2003-2006",
        "propertyType": "Flat",
        "floorArea": "58",
        "habitableRoomCount": 4,
        "heatedRoomCount": 4,
        "councilTax": {
          "band": "B",
          "price": "£1,940.84",
          "address": "26, Birch Avenue"
        }
      },
      {
        "address": "20 Birch Avenue, Anydistrict, Anytown",
        "currentEnergyRating": "C",
        "potentialEnergyRating": "C",
        "propertyAge": "2003-2006",
        "propertyType": "Flat",
        "floorArea": "65",
        "habitableRoomCount": 4,
        "heatedRoomCount": 4,
        "councilTax": {
          "band": "B",
          "price": "£1,940.84",
          "address": "20, Birch Avenue"
        }
      },
      {
        "address": "28, Birch Avenue",
        "currentEnergyRating": "C",
        "potentialEnergyRating": "C",
        "propertyAge": "2003-2006",
        "propertyType": "Flat",
        "floorArea": "64",
        "habitableRoomCount": 3,
        "heatedRoomCount": 3,
        "councilTax": {
          "band": "B",
          "price": "£1,940.84",
          "address": "28, Birch Avenue"
        }
      },
      {
        "address": "32, Birch Avenue",
        "currentEnergyRating": "C",
        "potentialEnergyRating": "C",
        "propertyAge": "2003-2006",
        "propertyType": "Flat",
        "floorArea": "74",
        "habitableRoomCount": 3,
        "heatedRoomCount": 3,
        "councilTax": {
          "band": "B",
          "price": "£1,940.84",
          "address": "32, Birch Avenue"
        }
      },
      {
        "address": "30, Birch Avenue",
        "currentEnergyRating": "C",
        "potentialEnergyRating": "C",
        "propertyAge": "1996-2002",
        "propertyType": "Flat",
        "floorArea": "220",
        "habitableRoomCount": 4,
        "heatedRoomCount": 4,
        "councilTax": {
          "band": "B",
          "price": "£1,940.84",
          "address": "30, Birch Avenue"
        }
      }
    ],
    "lowerBandedProperties": [
      {
        "address": "44 Birch Avenue",
        "currentEnergyRating": "C",
        "potentialEnergyRating": "C",
        "propertyAge": "1996-2002",
        "propertyType": "Flat",
        "floorArea": "45",
        "habitableRoomCount": 2,
        "heatedRoomCount": 2,
        "councilTax": {
          "band": "A",
          "price": "£1,663.57",
          "address": "44, Birch Avenue"
        }
      },
      {
        "address": "50 Birch Avenue",
        "currentEnergyRating": "C",
        "potentialEnergyRating": "C",
        "propertyAge": "1996-2002",
        "propertyType": "Flat",
        "floorArea": "45",
        "habitableRoomCount": 2,
        "heatedRoomCount": 2,
        "councilTax": {
          "band": "A",
          "price": "£1,663.57",
          "address": "50, Birch Avenue"
        }
      },
      {
        "address": "48 Birch Avenue",
        "currentEnergyRating": "C",
        "potentialEnergyRating": "C",
        "propertyAge": "1996-2002",
        "propertyType": "Flat",
        "floorArea": "45",
        "habitableRoomCount": 2,
        "heatedRoomCount": 2,
        "councilTax": {
          "band": "A",
          "price": "£1,663.57",
          "address": "48, Birch Avenue"
        }
      },
      {
        "address": "46 Birch Avenue",
        "currentEnergyRating": "D",
        "potentialEnergyRating": "C",
        "propertyAge": "2003-2006",
        "propertyType": "Flat",
        "floorArea": "45",
        "habitableRoomCount": 2,
        "heatedRoomCount": 2,
        "councilTax": {
          "band": "A",
          "price": "£1,663.57",
          "address": "46, Birch Avenue"
        }
      },
      {
        "address": "4 Birch Avenue",
        "currentEnergyRating": "B",
        "potentialEnergyRating": "B",
        "propertyAge": "2003-2006",
        "propertyType": "Flat",
        "floorArea": "46",
        "habitableRoomCount": 2,
        "heatedRoomCount": 2,
        "councilTax": {
          "band": "A",
          "price": "£1,663.57",
          "address": "4, Birch Avenue"
        }
      }
    ],
    "bands": [
      {
        "band": "Band A",
        "price": "£1,663.57"
      },
      {
        "band": "Band B",
        "price": "£1,940.84"
      },
      {
        "band": "Band C",
        "price": "£2,218.10"
      },
      {
        "band": "Band D",
        "price": "£2,495.36"
      },
      {
        "band": "Band E",
        "price": "£3,049.88"
      },
      {
        "band": "Band F",
        "price": "£3,604.41"
      },
      {
        "band": "Band G",
        "price": "£4,158.93"
      },
      {
        "band": "Band H",
        "price": "£4,990.72"
      }
    ],
    "comparableSales": [
      {
        "address": "24, Birch Avenue, EX2 7TN",
        "currentEnergyRating": "C",
        "potentialEnergyRating": "B",
        "propertyAge": "2006",
        "propertyType": "Semi Detached House",
        "floorArea": "84m²",
        "habitableRoomCount": 3,
        "heatedRoomCount": 3,
        "mostRecentSaleDate": "22 December 2006",
        "mostRecentSaleAmount": "£189,995",
        "currentProperty": true,
        "pid": "1b8510a62b9df826446a443cc5119c09",
        "postcode": "BS4 2PL"
      }
    ]
  }
}
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Frequently Asked Questions

Where does the property data come from?

Our API uses data licensed under the Open Government Licence, along with commercially licensed data from HM Land Registry and other third-party suppliers.

How accurate is the data?

We complete a full update of our entire database every month in line with monthly data updates from HM Land Registry.

How much does the data cost?

Property data is available on a pre-pay basis with charges starting as 1p per API call. We can also consider providing discounts and credit limits on an individual basis for larger discounts.

Do you offer any other property data that's not shown here?

If you require additional data that's not included in our standard API endpoints, please contact us.

Can I download the data in bulk?

Data is provided for an individual property when using our JSON API. If you'd prefer to download property data in bulk, please contact us.

We can provide property data in JSON or CSV formats, formatted specifically to meet your requirements.