All the possible errors returned by the PropertyData API, with further explanation and recommended actions:
| Code | Message | Explanation / recommended action |
| X01 | Invalid API method | Check the API method is spelled correctly and that it follows immediately after the base URL, e.g. https://api.propertydata.co.uk/method-name. If in doubt, try with the example URL from the documentation first. |
| X02 | Missing input: key | You have not supplied an API key. Every PropertyData API call requires a key, in the querystring using the variable 'key'. If you're logged in to PropertyData, the example URLs in the API documentation are automatically populated with your API key. |
| X03 | Invalid input: key | You supplied an API key, but it was not recognised. Check that your key is correct. Note that this is the error you would receive if you regenerated your API key in your account home, but were trying to use the old key in your application. |
| X04 | Monthly plan limit exceeded: N calls | You have reached your API plan call limit. Note that calls limits are reset at 00:01 on the first day of each calendar month. Consider upgrading your plan. |
| X05 | Account associated with API key cancelled or card declined | The PropertyData account associated with the API key you supplied has been cancelled or had it's card declined. Login and reactivate the account if you wish to continue using the PropertyData API. |
| X06 | Missing input: postcode | You have not supplied a postcode. All API methods except 'stamp-duty' require a full UK postcode, in the querystring using the variable 'postcode'. |
| X07 | Invalid input: postcode | The postcode you supplied was not recognised as a full UK postcode. Most of the time this means the postcode is not valid, although it can also mean the postcode is newly allocated. Try a different postcode. |
| X08 | Insufficient data found | Not enough relevant data points could be found to return analytics. See 'Data collection logic' in Getting started to understand more. |
| X09 | Uncaught exception | An unexpected error occuring in processing your API request. Please contact us, copying and pasting your API request URL. |
| X10 | Full postcode required for this method | You cannot use a postcode district or sector on this method, please use only a full UK postcode. |
| X11 | Method only available in [COUNTRIES] | Due to source data limitations, some PropertyData API methods are only available in England or England & Wales. See the Getting started page for a breakdown. |
| X12 | Invalid points: min 15, max 100 | If you supply the number of points to analyse, this must be between 15 and 100. Otherwise the default of 20 will be used. |
| X13 | Free trial limit exceeded: 500 calls | During your API free trial you can only make 500. Please manually start your first month. |
| X14 | Key throttled: last call less than two seconds ago | Our terms and conditions currently ask that you make no more than one call per two second period. If you receive this message, you are calling the API too fast. Please throttle your requests. |
| SM | Scheduled server maintenance | Very occasionally we take the API down for scheduled server upgrades and/or maintenance. This typically doesn't take more than one hour. |
| 102 | Invalid filter: bedrooms | The value you supplied in the 'bedrooms' filter variable was not valid. Valid values are 0, 1, 2, 3, 4, 5. |
| 103 | Invalid filter: type | The value you supplied in the 'type' filter variable was not valid. Consult the valid types list. |
| 401 | Value provided not recognised or out of range (1 - 10000000) | Stamp duty can only be calculated for prices of £1 to £10,000,000. Enter an integer in this range. |
| 402 | Country provided not recognised | The value you supplied in the 'country' variable was not valid. Consult the countries list or remove the country value to use 'england' as default. |
| 403 | A transaction cannot be both for a first-time buyer and an additional property | You entered 1 for both addtional rate stamp duty and first-time property. It is not possible for a transaction to be made both a first-time buyer and as an additional property. |
| 404 | Mode provided not recognised | The value you supplied for this field was not valid. Valid values for this field are: investment, primary, first_time, non_resi |
| 501 | Unable to identify council | We couldn't figure out the council from the valid postcode provided. This should not happen - please contact us us and let us know the postcode, and we will fix this. |
| 602 | Invalid input: decision_rating | Valid values for decision_rating are 'positive', 'negative' or 'neutral' |
| 603 | Invalid input: max_age_decision | The valid input for max_age_decision is an integer, minimum 1, maximum 1000. |
| 604 | No planning applications matching filter | Planning applications were found in this area, but none that matched your filters. |
| 605 | Invalid input: max_age_update | The valid input for max_age_update is an integer, minimum 1, maximum 1000. |
| 701 | Missing input: field_name | The named field is missing. All fields are required for valuations. |
| 702 | Invalid input: field_name | The named field is invalid. Consult the API documentation and accepted valuation options list and correct your inputs. |
| 801 | Title not found | Unable to find a title number matching the title number you provided. |
| 901 | Invalid filter: bedrooms | The value you supplied in the 'bedrooms' filter variable was not valid. Valid values are 0, 1, 2, 3, 4, 5. |
| 902 | Invalid filter: type | The value you supplied in the 'type' filter variable was not valid. Consult the valid types list. |
| 903 | Invalid filter: class | The value you supplied in the 'class' filter variable was not valid. Valid values are 'old_stock' or 'new_build'. |
| 904 | Invalid filter: tenure | The value you supplied in the 'tenure' filter variable was not valid. Valid values are 'freehold' or 'leasehold'. |
| 905 | Invalid filter: max_age | The value you supplied in the 'max_age' filter variable was not valid. Valid values are integers between 3 and 60 inclusive. |
| 1001 | Not a Greater London postcode | The PTAL method is only available for Greater London postcodes, since it is a Transport for London metric. |
| 1101 | Missing input: list | You did not provide a property list. This is required. Consult the property lists list. |
| 1102 | Invalid input: list | The 'list' provided does not match one of our lists. Consult the property lists list. |
| 1103 | Region provided not recognised | The value you supplied in the 'region' variable was not valid. Consult the regions list. |
| 1104 | Invalid input: radius | The value you supplied in the 'radius' variable was not valid. Radius must be an integer between 1 and 200 inclusive (miles) |
| 1105 | Invalid input: results | The value you supplied in the 'results' variable was not valid. Results must be an integer between 10 and 500 inclusive |
| 1201 | Unable to find any schools nearby | We couldn't find any schools near this postcode. |
| 1202 | Invalid filter: phase | Invalid filter for phase used. Accepted options are: Primary, Nursery, PRU, Secondary, Special |
| 1301 | Unable to find any restaurants nearby | We couldn't find any restaurants near this postcode. |
| 1401 | Invalid input: finish quality | The value you supplied for finish quality is invalid. Allowed values are 'premium', 'medium' or 'economy'. |
| 1501 | Missing input: bedrooms | You did not provide a number of bedrooms. This field is required for calculating LHA rate. |
| 1502 | Invalid filter: bedrooms | The value you supplied in the 'bedrooms' filter variable was not valid. Valid values for this method are 1, 2, 3, 4. |
| 1601 | Invalid filter: grade | The value you supplied in the 'grade' filter variable was not valid. Valid values for this method are: I, II* or II |
| 1602 | Invalid filter: listed_after | The value you supplied in the 'listed_after' filter variable was not valid. This value needs to be a valid year in YYYY format, eg 1975. |
| 1701 | Missing input: property_id | You did not provide the id for a property, as returned by the /sourced-properties API method. |
| 1702 | Invalid input: property_id | The property_id value you supplied was not in the expected format. The property_id parameter should match an id for a property as returned by the /sourced-properties API method. |
| 1703 | Property (ID: {property_id}) not found | The property could not be found on our Sourcing lists. Either this property has been removed from the market or there is an error in the provided property_id. |
| 1801 | Missing input: field_name | The named field is missing. All fields are required for development calculation. |
| 1802 | Invalid input: field_name | The named field is present but is not valid. This field must be a numeric value without any unit prefix or suffix, eg: 100000. |
| 1803 | Invalid input: project_type | The value you supplied for this field was not valid. Valid values for this field are: refurbish, demolition |
| 1804 | Invalid input: property_type | The value you supplied for this field was not valid. Valid values for this field are: house, block_of_flats |
| 1805 | Invalid input: finish_quality | The value you supplied for this field was not valid. Valid values for this field are: premium, medium, basic |
| 1901 | Missing input: title | You did not provide the title input. A valid land title number is required for this method |
| 1902 | Invalid input: title | The land title number you provided for this method is not valid. Land title numbers can be found using the /freehold-titles API method |
| 1903 | Buildings could not be analysed for this title | We are unable to provide a building analysis for this title plot |
| 2000 | Use class unknown | We are unable to determine the planning use class for this land registry title |
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Property listings seen on rightmove.co.uk, zoopla.co.uk and onthemarket.com.
The data is updated in near real-time.
This is a real-time market snapshot - the data covers currently listed properties. Once properties are removed from the portal, they are soon removed from this tab.
Duplicates from multiple sources are matched and reconciled as far as possible. Listings with obvious errors, where price or number or bedrooms appear out of range, are discarded.
Averages shown are the interquartile mean, a type of average that is insensitive to outliers while being its own distinct parameter. The 80% range means that 80% of the listed properties fall inside this range.
Property listings seen on rightmove.co.uk, zoopla.co.uk and onthemarket.com.
We use proprietary technology to read the square footage of properties from agent floorplans. Although we cannot determine the square footage for all properties, we can usually get sufficient coverage. Agents are sometimes known to inflate square footage, and this should be borne in mind as a weakness of this data.
The data is updated in near real-time.
This is a real-time market snapshot - the data covers currently listed properties. Once properties are removed from the portal, they are soon removed from this tab.
Duplicates from multiple sources are matched and reconciled as far as possible. Listings with obvious errors, where price or number or bedrooms appear out of range, are discarded.
The average shown is the interquartile mean, a type of average that is insensitive to outliers while being its own distinct parameter. The 80% range means that 80% of the listed properties fall inside this range.
Property "price paid" data provided by the Land Registry.
Once per month when released by the Land Registry, typically towards the end of each calendar month covering up to the end of the previous calendar month.
You can customise the time period using the filter at the top of the view. The default time period is up to 9 months back from today's date. The latest data covers the period up to 2021-09-29, although some sales that took place before this date may still be added in the coming months.
No additional processes are applied to this data.
Averages shown are the interquartile mean, a type of average that is insensitive to outliers while being its own distinct parameter. The 80% range means that 80% of the listed properties fall inside this range.
Property "price paid" data provided by the Land Registry, and Energy Performance Certificate (EPC) data provided by Ministry of Housing, Communities & Local Government.
We match the Land Registry data to EPC data provided by the MCHLG. Due to the fact that not all properties sold have had an EPC and vagaries of addressing in the UK, we are not able to determine the square footage of all properties, but we can usually get sufficient coverage.
The private paid data is updated once per month when released by the Land Registry, typically towards the end of each calendar month covering up to the end of the previous calendar month. The energy performance certificate database is updated monthly.
You can customise the time period using the filter at the top of the view. The default time period is up to 9 months back from today's date. The latest data covers the period up to 2021-09-29, although some sales that took place before this date may still be added in the coming months.
No additional processes are applied to this data.
The average shown is the interquartile mean, a type of average that is insensitive to outliers while being its own distinct parameter. The 80% range means that 80% of the listed properties fall inside this range.
Property listings seen on rightmove.co.uk, zoopla.co.uk and onthemarket.com.
The data is updated in near real-time.
This is a real-time market snapshot - the data covers currently listed properties. Once properties are removed from the portal, they are soon removed from this tab.
Duplicates from multiple sources are matched and reconciled as far as possible. Listings with obvious errors, where price or number or bedrooms appear out of range, are discarded.
The average shown is the interquartile mean, a type of average that is insensitive to outliers while being its own distinct parameter. The 80% range means that 80% of the listed properties fall inside this range.
Room let listings on SpareRoom, the UK's biggest room letting website.
The data is updated in near real-time.
This is a real-time market snapshot - the data covers currently listed properties. Once properties are removed from SpareRoom, they are soon removed from this tab.
Listings with obvious errors, where price or number or bedrooms appear out of range, are discarded.
The average shown is the interquartile mean, a type of average that is insensitive to outliers while being its own distinct parameter. The 80% range means that 80% of the listed properties fall inside this range.
Property listings seen on rightmove.co.uk, zoopla.co.uk and onthemarket.com.
The data is updated in near real-time.
This is a real-time market snapshot - the data covers currently listed properties. Once properties are removed from the portal, they are soon removed from this tab.
Duplicates from multiple sources are matched and reconciled as far as possible. Listings with obvious errors, where price or number or bedrooms appear out of range, are discarded. Yields are calculated by comparing only properties with the same number of bedrooms, e.g. 3-bedroom properties for rent with 3-bedroom properties for sale.
The calculation used is (average_weekly_asking_rent * 52 / average_asking_price), expressed as a percentage. It is a top-line gross yield, meaning no expenses are considered.
The average shown is the interquartile mean, a type of average that is insensitive to outliers while being its own distinct parameter. The 80% range means that 80% of the listed properties fall inside this range.
Property listings seen on rightmove.co.uk, zoopla.co.uk and onthemarket.com.
The data is updated in near real-time.
This is a real-time market snapshot - the data covers currently listed properties. Once properties are removed from Zoopla, Rightmove or Spareroom, they are soon removed from this tab.
Duplicates from multiple sources are matched and reconciled as far as possible. Yields are calculated by comparing only properties with the same number of bedrooms, e.g. 3-bedroom properties for rent with 3-bedroom properties for sale. For the SpareRoom data, hypothetical properties consisting of two to six average double rooms with shared bathrooms are used to derived average rent. For all sources, listings with obvious errors, where price or number or bedrooms appear out of range, are discarded.
The calculation used is (average_weekly_asking_rent * 52 / average_asking_price), expressed as a percentage. It is a top-line gross yield, meaning no expenses are considered.
The average shown is the interquartile mean, a type of average that is insensitive to outliers while being its own distinct parameter. The 80% range means that 80% of the listed properties fall inside this range.
Property "price paid" data provided by the Land Registry.
Once per month when released by the Land Registry, typically towards the end of each calendar month covering up to the end of the previous calendar month.
Zoopla Zed-index
The data covers transactions in the last six years
No additional processes are applied to this data.
The average shown is the interquartile mean, a type of average that is insensitive to outliers while being its own distinct parameter. The 80% range means that 80% of the listed properties fall inside this range.
Property listings seen on rightmove.co.uk, zoopla.co.uk and onthemarket.com.
The listings data is updated in near real-time. The Land Registry data is updated once per month when released, typically towards the end of each calendar month covering up to the end of the previous calendar month.
The price paid data shown goes back to January 2015. The listings data is a real-time market snapshot - the data covers currently listed properties. Once properties are removed from the portal, they are soon removed from this tab.
Duplicates from multiple sources are matched and reconciled as far as possible. Listings with obvious errors, where price or number or bedrooms appear out of range, are discarded.
Average sales per month are for the last 3 finalised months. Turnover is average sales per month divided by total for sale. Inventory is 100 divided by turnover.
Property listings seen on rightmove.co.uk, zoopla.co.uk and onthemarket.com.
The listings data is updated in near real-time. The Land Registry data is updated once per month when released, typically towards the end of each calendar month covering up to the end of the previous calendar month.
This is a real-time market snapshot - the data covers currently listed properties. Once properties are removed from the portal, they are soon removed from this tab.
Duplicates from multiple sources are matched and reconciled as far as possible. Listings with obvious errors, where price or number or bedrooms appear out of range, are discarded.
We receive data on the extent and corporate ownership of all land titles in England & Wales from the Land Registry.
The data is updated once per month when released, typically in the first few days of each calendar month.
This is an ownership snapshot - the data represents ownership as recorded by the Land Registry at the last monthly export.
No additional processes are applied to this data.
The baseline construction cost data comes from PropertyData's own research. The regional variances are sourced from an annual survey carried out by Turner & Townsend.
The baseline construction cost data is checked four times a year. The regional variances are updated annually when the new cost survey data is released, typically around the middle of the year.
We apply the regional variance data sourced from Turner & Townsend to the underlying cost data in a simple way. Data is rounded to the nearest £10/sqft. No additional processes are applied to this data.
We source different expert forecasts Savills, Knight Frank, OBR
The data is updated annually when new forecasts are released, typically towards the beginning of the year.
We calculate a consensus forecast using a simple mean average.
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