Table of Contents
What Is Google Maps Scraping?
Google Maps scraping is the automated process of extracting business data — including names, addresses, phone numbers, email addresses, websites, reviews, and social media links — from Google Maps listings. Instead of manually copying data from hundreds of business profiles, a Google Maps scraper tool automates the entire process, saving you hours of repetitive work.
For agencies, freelancers, and sales teams, this data forms the backbone of B2B lead generation. By scraping Google Maps, you can build targeted outreach lists segmented by industry, location, and business type — all without paying for expensive lead databases.
Why Scrape Google Maps for Business Leads?
Google Maps is the largest directory of local businesses in the world. With over 200 million businesses listed, it contains the exact data that B2B sales teams need:
- Business names and categories — know exactly who you're reaching out to
- Phone numbers — for cold calling campaigns
- Website URLs — Client Koi visits these to extract hidden email addresses
- Social media profiles — Facebook, Instagram, LinkedIn links for multi-channel outreach
- Review counts and ratings — filter for established businesses with strong online presence
- Operating hours and addresses — useful for local service businesses
Unlike paid lead databases (which can cost $200-$500/month), Google Maps data is publicly available and constantly updated by business owners themselves, making it the freshest source of B2B contact information available.
Step-by-Step: Scraping Google Maps with Client Koi
Client Koi is a free, open-source Chrome extension that makes Google Maps scraping accessible to everyone. Here's exactly how to use it:
Step 1: Download and Install Client Koi
Download the latest version from the official GitHub repository. Extract the ZIP file to a folder on your computer, then navigate to chrome://extensions in Chrome, enable Developer Mode, and click "Load Unpacked" to select the extracted folder.
Step 2: Navigate to Google Maps
Open Google Maps in Chrome. Search for your target niche and location — for example, "plumbers in Miami" or "marketing agencies in London". The more specific your search, the higher quality your leads will be.
Step 3: Open Client Koi Sidepanel
Click the Client Koi extension icon in your Chrome toolbar. The sidepanel opens directly alongside Google Maps, allowing you to see both the map results and the scraper controls simultaneously.
Step 4: Configure Your Extraction Settings
Set your search tags (the niches you want to target), adjust the delay jitter (randomized pauses between actions to avoid detection), and optionally enable 2Captcha integration if you plan to run extended scraping sessions overnight.
Step 5: Start Scraping
Click the "Start" button. Client Koi will automatically scroll through Google Maps results, visit each business listing, click through to their website, and extract email addresses, phone numbers, and social media links that Google Maps alone doesn't display.
Step 6: Export Your Leads
Once extraction is complete, click the "Export" button to download your compiled lead list as a CSV or XLSX file. This file is immediately ready for import into your CRM (HubSpot, Salesforce, etc.) or email outreach tool (Mailchimp, Lemlist, etc.).
Advanced Google Maps Extraction Techniques
Once you've mastered the basics, these advanced techniques will dramatically improve your results:
Use Specific, Long-Tail Search Tags
Instead of searching for generic terms like "restaurants", target specific niches: "Italian restaurants with outdoor seating in Brooklyn". Specific searches yield higher-quality leads because you know exactly what the business offers.
Run Overnight Extraction Sessions
Enable 2Captcha integration to automatically solve CAPTCHAs. Set a conservative delay interval (5-8 seconds between actions), start the extraction before bed, and wake up to thousands of verified leads. Read more in our Pro Tips guide.
Combine with Cold Email Outreach
Export your leads to CSV, then import them into an email outreach tool. Personalize your emails using the business name and category data. For example: "Hi [Business Name], I noticed you're a [category] in [city]..."
Segment by Quality Signals
Businesses without websites are often the highest-value prospects — they need digital marketing services the most. Filter your exported data to find businesses with phone numbers but no website URL for premium outreach opportunities.
Is Google Maps Scraping Legal?
Scraping publicly available data from Google Maps is generally considered legal in most jurisdictions. The landmark US court case hiQ Labs v. LinkedIn (2022) established that scraping publicly accessible data does not violate the Computer Fraud and Abuse Act.
However, it's important to follow best practices:
- Only scrape publicly visible data — never attempt to access private or login-protected information
- Use reasonable rate limits — Client Koi's built-in delay jitter handles this automatically
- Comply with GDPR/CCPA — when reaching out to contacts, include an opt-out mechanism in your emails
- Respect robots.txt — Client Koi operates within the browser and respects standard web protocols
Next Steps
Now that you understand how to scrape Google Maps, explore the rest of Client Koi:
- See all features — Deep email extraction, CAPTCHA bypass, and more
- Read pro tips — 10 expert techniques to maximize your lead quality
- Compare scrapers — See how Client Koi stacks up against paid alternatives