You have a reason to call or write to the businesses in your neighborhood — a local cause to champion, a service to offer, an event to organize, a canvassing route to plan. You open a professional directory to grab the phone numbers, and hit a wall: create an account, pick a plan, pay annually. For three streets and about forty shops, that price tag makes no sense. You close the tab in frustration, telling yourself there must be a simpler way.
There is, and it's free. The contact details of a baker, a mechanic, or a florist are not locked behind a paywall — they're out in the open, on their storefront, on their online listing, in a public government registry. The only real work is pulling them together neatly into a usable list. Here's how to do it, source by source, without spending a cent — and a few rules to know before you reach out.
Why a paid directory is the wrong place to start
A professional directory sells you convenience, not exclusivity. The contact details it charges for are, in the vast majority of cases, already public data that someone else simply aggregated before you. You're paying for the formatting, not the information. For a small geographic area and a one-off need, paying an annual subscription is like renting a truck to move a single box.
The real problem with a paid directory, beyond the cost, is that it removes your accountability. You receive a file without knowing where the numbers came from or when they were last verified. Yet you're the one responsible for how you contact people. A list you build yourself, where you know every source, is safer than an opaque file that can expose you without you understanding why.
Finding the contact details of local tradespeople and businesses: free public sources
To find the contact details of local tradespeople and businesses, three free sources are sufficient and complementary: the French government's Sirene registry for official identity and address, online listings like Google Maps for phone numbers and websites, and the businesses' own websites for everything else. None of them cost a thing.
Start with the official foundation. The Sirene directory, managed by INSEE (France's national statistics institute), lists every French business and establishment — legal name, address, industry. It has been openly and freely available for years (INSEE open data blog). You can query this registry by name or address through the INSEE free access portal and the government's Annuaire des Entreprises. The full dataset is even downloadable, filterable by postcode and NAF code (47.11 for food retail, 56.10 for traditional restaurants), on data.gouv.fr. This is your source of truth for the exact legal name, postal address, and SIRET number of any establishment.
The catch with Sirene is that it rarely gives you a direct phone number or website. For that, the most useful source is the map. Search your type of business followed by your neighborhood or street name in any map search, and you'll see listings scroll by — each with a phone number, address, website, and opening hours. All public, all visible. We cover the full approach, and how to avoid copying each listing one by one, in our guide on exporting a list from Google Maps to CSV for free.
Getting phone numbers and completing each listing
Once you have names and addresses, what remains — and what matters most for local outreach — is the phone number and sometimes an email address. Map listings already provide a lot, but they're rarely complete. The winning move is to go straight to the source for whatever's missing: the business's own website.
Open each business's site and head straight to the footer or the "Contact" section. That's where you'll find the direct number, the workshop or shop email, sometimes a second number for emergencies or orders. A "Legal Notice" page also confirms the official registered name, handy for cross-checking against what Sirene gave you. If a listing still has no phone number, a tool that scans the website and pulls out any displayed numbers saves you a huge amount of time — we explain how it works in our guide on pulling additional phone numbers from a website.
Track everything as you go in a spreadsheet, one row per business: name, address, phone, email, website, and a personal notes column. At the end, you don't have a file you bought blindly — you have a clean, sourced list you control from start to finish.
Targeting the right area without drowning in volume
The beginner's mistake is casting too wide a net. You don't need every business in your city: you need the right ones, within the right perimeter. Forty precise listings from your neighborhood are worth far more than four hundred vague addresses across an entire department that you'll never work through one by one.
Your targeting should fit in one concrete sentence. Not "businesses in Lyon" (10,000+ unusable results), but "food and drink businesses in Lyon's 7th arrondissement, between avenue Berthelot and rue Garibaldi." That precision gives you a list of 30 to 80 establishments — a manageable volume that lets you personalize each approach. Carve out your zone by hand: a neighborhood, an avenue, an area you know. Then filter by business type based on your need — only food and drink shops, only construction tradespeople, only storefronts on the street. For a whole mid-sized town (10,000–30,000 residents), the list stays workable; for a major city (100,000+), you must segment by neighborhood or business type. That dual filter — geographic and thematic — gives you a short but qualified list. If you want the method for turning an area into a large file, we've written it up in our guide on building a list of 500 targeted businesses in an hour.
Mobilizing businesses for a local cause
If your goal isn't commercial but activist or community-driven — greening a street, supporting a business threatened with eviction, gathering signatures against a development project, rallying support for a neighborhood event — local shopkeepers are invaluable allies. They have a storefront, visibility, and a daily presence in the life of the neighborhood. Mobilizing thirty or fifty of them immediately gives your cause a different scale. The list is built exactly as described above: Google Maps for storefronts, Sirene for the legal name and SIRET, the business website for a contact email.
The specific challenge for a local cause is email — often the missing link. Many small businesses have neither a LinkedIn page nor a standard B2B profile. Three reliable approaches: visit the business's website if it exists (the contact page gives the most reliable email, along the lines of contact@somebakery.com); run an email finder on existing domains when the email isn't displayed; and for businesses with no website (a common case), spend thirty seconds in the shop to ask for a contact. Across fifty businesses, that on-foot canvassing represents one to two half-days of walking — a reasonable investment for a neighborhood cause, and often more effective than email for key establishments (the main bakery, the busy café), where an in-person approach carries far more weight.
Your message must not sound commercial under any circumstances: shopkeepers are solicited constantly and dismiss anything that looks like a sales pitch within five seconds. The structure that works fits in four sentences, 70 to 80 words. Start with your local anchor: "I'm Léa, I live on rue de la Charité just down from your shop" — the shopkeeper immediately understands you're a neighbor, not an outside salesperson. Then the concrete cause, with a number and a specific area that lend credibility: "We're running an initiative to green rue Garibaldi — 47 businesses and 200 residents are already behind us." Then a simple, bounded ask: "Would you be willing to display our A4 poster in your window from June 1–15?" And finally an easy out, no pressure: "If it doesn't fit your business, no worries at all — we'll thank you either way." Keep the tone warm, never aggressively activist — shopkeepers don't want to get drawn into a political fight that isn't their own.
For sending, spread it over three to five days (ten to fifteen per day), ideally Tuesday or Thursday mornings between 10 and 11 a.m., when shopkeepers check their emails between services. Track everything in a simple spreadsheet — name, address, email, date, status (sent / replied / accepted / declined) — and follow up politely once, seven to ten days later. No third follow-up: anyone who hasn't responded after two attempts won't, and you have thirty other businesses to reach. Across fifty well-personalized messages for a legitimate cause, expect a noticeably higher response rate than classic B2B outreach — the local dimension creates real engagement — and around ten concrete acceptances, which is more than enough to give your initiative real weight.
Contacting local tradespeople and businesses by the book
Calling or emailing local tradespeople and businesses is permitted within a specific framework: you're addressing a professional on a topic related to their business activity, and you always give them a simple way to say stop. This isn't aggressive solicitation — it's a regulated practice that hundreds of thousands of professionals use every day.
For email, the CNIL (France's data protection authority) is clear on contacting professionals: you can write without prior consent, subject to two conditions. First, "the subject of the solicitation must be related to the profession of the person being contacted" — you're writing to the florist about something that touches their trade, not selling them anything and everything. Second, the person must be able to opt out "simply and free of charge" from receiving further messages. In practice: introduce yourself clearly, get to the point, and include a line like "if you're not interested, just let me know and I won't push further."
By phone, the same spirit applies. You're calling a professional number, for a reason connected to the establishment's activity, you introduce yourself without delay, and you respect a "no" first time. If someone asks you not to call again, note the opt-out in your list and don't go back. This opt-out discipline isn't just courtesy — it's what separates a clean approach from harassment, and it protects your reputation in a neighborhood where everyone knows each other.
A nuance for non-commercial outreach: when you approach a shopkeeper on behalf of a local cause (association, citizen petition, neighborhood mobilization), you're no longer engaged in commercial solicitation under GDPR but in an approach that falls under freedom of expression. The CNIL distinguishes these non-commercial approaches from B2B/B2C campaigns, and prior consent is not required. Two precautions still apply: never resell or share the list you've built — it's only for your campaign — and respect any shopkeeper who asks not to be contacted again. That's also just basic neighborly respect.
The shortcut: from blank page to ready list
Everything above is doable by hand, for free. The only enemy is time: opening forty listings, copying forty phone numbers, checking forty websites — that turns a good idea into an evening-long chore. This is exactly where an extraction tool wins you back the essentials — the mechanical collection — so you can save your energy for the outreach itself.
That's what outsend in alpha does: you describe your type of establishment and your area, and you get back a structured list — name, address, phone, website — with no subscription and no paid directory involved. You can then complete it, verify that numbers are actually assigned with a number validity check, and enrich each entry with official SIRET and SIREN data. You start from a blank page and leave with a clean, ready-to-use working file.
This article is part of a broader series: see the guide to outreach without a SIRET.
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Request free alpha accessFAQ — Finding contact details for local tradespeople and businesses
Where can I find a tradesperson's or business's phone number and address for free?
Three free public sources are all you need. The INSEE Sirene directory gives you the legal name, address, and official industry classification. Online map listings (such as Google Maps) show the phone number, website, and opening hours. And the business's own website, in its footer or "Contact" section, fills in the rest. None of these sources cost anything.
Is the Sirene directory really free and public?
Yes. Data from the Sirene directory, managed by INSEE, is distributed under free and open access (INSEE). You can query the registry by establishment name or address via the government's Annuaire des Entreprises, or download the full dataset — filterable by postcode and NAF code — on data.gouv.fr. It gives you official identity and address, but rarely a direct phone number: for that, supplement with online listings and websites.
Is it legal to collect contact details for businesses that are publicly listed online?
Gathering professional contact details that are publicly displayed — on a map listing, a website, an official registry — is lawful, as long as you respect the rules of engagement when you actually contact those establishments. What's regulated is not the act of noting a public phone number, but how you use it when reaching out.
Am I allowed to call or write to a business I've never dealt with?
Yes, within a defined framework. To contact a professional, the CNIL does not require prior consent, provided the subject of your message is related to the person's professional activity and they can opt out "simply and free of charge" from receiving further messages. Introduce yourself clearly and respect any refusal from the first contact.
Is it legal to build a list of businesses for an activist cause?
Yes. Building a list of businesses from public sources (Google Maps, Sirene) for a local activist or community cause is a non-commercial activity, distinct from the kind of prospecting regulated by GDPR. Prior consent is not required as long as the use remains non-commercial, the list is neither resold nor shared, and any opt-out from a shopkeeper is respected.
How do you write to a shopkeeper without sounding like a sales pitch?
Four sentences, 70 to 80 words. Start with your local anchor (you live in the neighborhood), then lay out the concrete cause with a number and a specific perimeter, make a simple and bounded ask (display an A4 poster, sign a petition), and close with an easy out, no pressure. Keep the tone warm, never aggressively activist — shopkeepers don't want to be pulled into a fight that isn't their own.
Why avoid a paid professional directory for this?
Because you'd mostly be paying for the formatting of data that's already public. For a small area and a one-off need, an annual subscription is completely disproportionate. Worse, you receive a file without knowing where the numbers came from or when they were last verified, while you remain responsible for how you contact people. A list you build yourself, with full knowledge of each source, is both safer and free.
How do you avoid copying each listing by hand?
Beyond a few dozen establishments, manual collection becomes a real chore. An extraction tool scans the online listings and outputs a clean file directly — name, address, phone, website — that you just need to sort. That's exactly what outsend in alpha offers, with no subscription, from a simple business type and area.