The construction sector has 440,000 companies in France, of which 412,500 are craft-sized businesses, 94% of the sector (FFB, Le bâtiment en chiffres 2024). For anyone selling to tradespeople, building-materials merchants, professional insurers, quoting software, protective equipment or van financing, the market is huge. It is also fragmented: hundreds of thousands of very small firms, each with its owner-decision-maker. Reaching them one by one on Google or directories takes forever. A targeted prospect file saves that time, provided you build it correctly.
A large, fragmented and very local craft market
Construction is mostly micro-firms. There are 376,000 companies with fewer than ten employees, nearly 85% of the total (FFB, 2024). The finishing trades, electrical, plumbing, heating, joinery, alone account for almost 66% of salaried staff. Add 89,000 new companies created in construction in 2024 alone (INSEE), and you get a pool that renews constantly.
This fragmentation has a direct consequence for you. The tradesperson decides alone, fast, and favours nearby suppliers. A generic national database misses that reality. A file split by area sticks to the ground.
Target the trade and the area, not "construction" as a block
A plumber, an electrician and a mason do not share the same needs, the same buying cycles or the same contact. Speaking to "construction tradespeople" in general dilutes your message. A good file segments on two axes at once: the precise trade and the geographic area. Want to approach electricians across three neighbouring areas? That level of precision makes the difference, not a list of 700,000 contacts delivered in bulk.
What sets a good file apart from one that gathers dust
Most vendors push volume. Volume does not book a meeting. Here are the criteria that really count.
| Criterion | Why it is decisive |
|---|---|
| Verified email | Limits bounces and protects your deliverability |
| Data freshness | Construction sees high turnover: closures, new firms |
| Company ID and director | Qualify, deduplicate, personalise the approach |
| Trade + area targeting | Speak to the right tradesperson, in the right territory |
| Landline and mobile | Follow up across channels after the email |
A frozen database or a file generated on demand
This is the real tipping point. Most files on the market are frozen stocks, sometimes built a year or two ago. A database bought eighteen months ago has aged: firms have closed, others have appeared, addresses no longer respond. A file extracted to date from Google Maps reflects real activity at the moment you prospect. You generate your list for your trade and your area, now, rather than inheriting a file your competitors already own. That is the logic of construction packs by area: you only pay for the territory you work.
Approaching tradespeople while staying GDPR-compliant
Email prospecting to a business is allowed in B2B, under conditions. A tradesperson's professional address may be contacted if your offer relates to their activity, if the sender is identifiable and if every message offers a simple opt-out. A clean file, with professional addresses and a named director, keeps you on the right side. The same reasoning applies to other local sectors, as shown in our automotive garage file.
Frequently asked questions
Where can I find a reliable, up-to-date construction trades file?
Favour a source that extracts data to date rather than a frozen database. A Google Maps generation, segmented by trade and area, with verified emails and company IDs, offers the freshness that databases resold for months no longer have.
Are free tradespeople email lists worth anything?
Not much. Free lists from old directories or unverified scraping pile up duplicates, dead addresses and closures. The bounce rate sinks your deliverability from the first send. A small but clean file beats a large unusable one.
How do I target a specific trade and area?
By combining the activity (plumbing, electrical, masonry) and the geographic scope: region, area, even town. This double segmentation avoids spraying the whole country and focuses your budget on the tradespeople you can actually serve.
What data should a good construction file contain?
At minimum: company name, verified email, phone, address, company registration and activity code, and ideally the director's name. The registration number lets you discard struck-off firms and deduplicate. A named director lifts the reply rate.
Is email prospecting to tradespeople legal?
Yes, in B2B, under the legitimate interest basis. The offer must relate to the recipient's activity, the sender must be identifiable, and opt-out must be available at any time. Work with professional addresses rather than personal ones.
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