- Banquet Halls, Topanga
- Bars & Grills, Topanga
- Beauty Salons, Topanga
- Bed & Breakfast, Topanga
- Bicycle Rentals, Topanga - Bike Rental
- Bicycle Repair & Service, Topanga - Bike Repair Shops
- Bicycle Shops, Topanga - Road, Hybrid, Folding, BMX, Electric & Mountain Bikes Stores & Dealers
- Bistros, Topanga
- Blind Services & Facilities, Topanga
- Boats & Yachts, Topanga - Yachts, Sailboats & Boats for Sale
- Book Stores, Topanga
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- Builders & Contractors, Topanga
- Builders & Contractors - More, Topanga
- Building Construction Consultants, Topanga - Construction Management & Consulting
- Building Materials, Topanga - Wholesale, Manufacturers, Dealers & Suppliers
- Building Materials & Supplies, Topanga
- Business & Professional Associations, Topanga
- Business Legal Services, Topanga
- Business Management Consultants, Topanga
- Business Services, Topanga
- Business Studio Rental, Topanga
- Business, Vocational & Technical, Topanga
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