Free Spain Business Databases: Sources and Trade-offs

1. Where to look for free data

The datos.gob.es catalogue helps you discover datasets from different public bodies. Open the original publisher’s record to inspect scope, formats and conditions. Not every dataset describes individual businesses, and contact details are not a standard feature of every file.

Overture Maps is another starting point when you need physical establishments. Its Places theme can support filtering by location and activity. You still need to process the data and understand the schema. An open download and a reviewed commercial prospect list solve different stages of the work.

2. Compare a sample before comparing millions

Look for a preview or a column description before downloading a large file. Establish whether one record describes a company, a licence, a shop or a branch. Mixing these units can inflate the apparent size of a database without improving the prospects you can actually select.

Review geography, date and category together. A recent file from the wrong province does not fit your market; a local file with vague categories may not fit either. If you need businesses without websites, you also need an explicit method for checking that condition.

3. Preserve source and licence information

Keep the source address, download date and conditions supplied with the dataset. Overture licensing obligations depend on the theme and incorporated sources; read its attribution documentation and metadata before redistributing a derived file. Do not describe data from another provider as Google Maps data.

Public access alone also does not settle how personal data may be used or commercial messages sent. If you are working in Spain, consult the AEPD’s official guidance for the channel you plan to use. Do not sell or treat a contact list as evidence of permission to contact everyone on it.

4. Clean records without inventing missing fields

Start with a working copy. Keep telephone numbers as text, normalize whitespace and compare names with addresses when reviewing duplicates. Retain separate branches if they matter to your service. Do not infer revenue, company size or buying intent from a business name.

Leave missing emails blank. A missing website needs a check before you conclude that no site exists. A review status column such as pending, checked and excluded helps distinguish usable records from assumptions. This is especially important when different sources were refreshed at different times.

• Keep an original file and a working copy.
• Record why each rejected row was excluded.
• Check a sample after importing into your CRM.

5. Account for the full cost of free

Use a simple calculation: research, cleanup and review hours multiplied by your internal hourly cost. In a hypothetical example, three hours at 20 euros represent 60 euros of work even when the download is free. This is not a market rate or a promised saving; substitute your own numbers.

Preparing data yourself can be the right choice when you need specific fields, full control or recurring research. A prepared list may fit when the selection criteria are clear and organizing the data costs more than purchasing the result.

6. Where a prepared GetNoSite list fits

GetNoSite is a paid option for finding businesses by city and niche with no independent website identified. It delivers Excel and CSV with public phone numbers and email where available. Stock is checked before payment, and the Excel workbook carries source and licence information.

It is not a database of every registered Spanish company or a financial research service. If you only need free data, use the sources in this guide and assess the preparation work. If you need a focused web design prospect list, compare your market’s available records with those requirements.