Google Maps No-Website Business Finder

I want a app or script, reliable app that scans Google Maps and returns every business that has no website listed. To start, it should focus exclusively on all type of company; once that workflow is solid, I can run the same search logic on other niches myself... (Budget: $30 - $250 USD, Jobs: API Development, Data Analysis, Data Extraction, Data Management, Google App Engine, Google Maps API, PHP, Python, Software Architecture, Web Scraping)