How to Find B2B Leads on Google Maps: A Step-by-Step Prospecting Method

For a company that sells to other businesses in its city, the best prospect database is one it already uses to find lunch. Google Maps lists restaurants, clinics, workshops, schools and factories with their category, location, phone number, opening hours, website, photos and customer reviews. Used methodically, it is a practical way to find B2B leads on Google Maps without buying a list of doubtful origin.

Step 1: define who you are looking for

A search is only as good as its target. Write down:

• Type of business. Dental clinics, car workshops, catering companies, boarding houses.
• Area. The districts you can actually serve.
• Size signals. Number of reviews, number of branches, premises visible in photos.
• Need signals. What suggests they have the problem you solve.

For example, a company selling an appointment system might target clinics with many reviews, several doctors and no online booking link.

Step 2: search systematically

• Search by category and district, one district at a time: "dental clinic" in each neighbourhood. A city-wide search hides most results.
• Try related categories. Customers who need you may be listed under several labels.
• Zoom in. The map shows more businesses at closer zoom levels.
• Note the search you ran, so that you can repeat it in three months and find new openings.

Step 3: record the basics

For each business, capture in a sheet or CRM:

• Name and category.
• Address and district.
• Phone number, and whether it appears to be a mobile number that uses WhatsApp.
• Website and social media link.
• Rating and number of reviews.
• Opening hours.
• The Maps link, for reference.

Collecting by hand works for dozens of records. For hundreds, a tool that gathers and de-duplicates them saves days. Whichever you use, take only what the business has published for customers.

Step 4: score each prospect

Not every listing deserves a message. A simple score from 0 to 10 focuses effort:

• Fit (0 to 4). Is it the right type and size?
• Need (0 to 3). Do you see signs of the problem? No website, complaints in reviews about slow replies, outdated information, no way to book or order online.
• Reachability (0 to 2). Is there a direct number, and is the business active? Recent reviews and photos suggest it is.
• Value (0 to 1). Could they become a meaningful customer?

Contact those scoring seven or more first. Read the latest reviews of the top prospects. They tell you what customers praise and what frustrates them, which is the best material for a relevant opening.

Step 5: write a first message that earns a reply

A good first message is short, specific and easy to answer.

"Good afternoon, I am Dimas from Rapih Laundry Solutions. I saw that Klinik Sehat has three branches. We supply and collect linens for clinics in South Jakarta, with next-day turnaround. May I send a one-page price list?"

What makes it work:

• It says who you are in the first line.
• It shows you looked at their business.
• It states what you do in one sentence.
• It asks a small question.

What to avoid:

• A paragraph about your company history.
• Attachments and links in the first message.
• The same text to everyone, with only the name changed.
• Claims you cannot support.

Step 6: contact with restraint

• Send during business hours.
• Keep daily volumes modest and write each message individually. Mass identical messages to strangers are how numbers get reported and restricted.
• If they say no, thank them and mark the record.
• If they ask how you got the number, say plainly that it is on their public listing.

Step 7: follow up and keep records

Most replies come after a reminder. Follow up once after a few days with something useful, such as a relevant example or a photo, and once more a week later. Then stop.

Record every outcome: replied, interested, not now, not interested, wrong number. "Not now" with a date is a future lead. After a month you will know your reply rate and which categories and districts respond best.

Step 8: improve the targeting

Look at who replied and who bought.

• Which categories converted?
• Which need signals predicted interest?
• Which opening line drew replies?

Adjust the scoring and the message. Prospecting improves quickly when each round informs the next.

A word on respect and rules

Use business contact details for business purposes, identify yourself, honour requests to stop and follow the messaging platform's rules and the personal data protection law that applies to you. A reputation as the company that spams the neighbourhood travels faster than any offer.

Doing this at scale

Collecting, de-duplicating, scoring and tracking are repetitive work that software handles well. Polynusa includes a lead finder that gathers businesses from Google Maps by category and area, scores them by rules you can see, and places them in a pipeline connected to your WhatsApp inbox, where an AI assistant can draft the first message for you to review. You can try it free. Plans are on the pricing page.

Summary

Define the target, search district by district, record the public details, score for fit, need and reachability, and write a short, specific first message. Contact a modest number each day, follow up twice, keep records, and use the results to sharpen the next round.

FAQ

Is it legitimate to contact businesses found on Google Maps?

Contacting a business through the public contact details it published for customers is normal commercial practice. Be relevant, identify yourself clearly, keep volumes modest and stop when asked. Bulk unsolicited messaging is a different matter and can get your number blocked.

How many prospects should a small team contact per day?

Twenty to forty well-chosen, individually written first messages per salesperson is a workable range. Beyond that, quality drops and replies fall. A smaller list that fits your offer outperforms a large one that does not.

What should we do if a prospect does not reply?

Follow up once or twice over the next two weeks with something useful, then stop. Keep the business on a list to revisit in a few months. Do not send repeated messages to a number that has never responded.