- Bacteria Control Equipment & Systems, Seaford
- Bagel Restaurants, Seaford
- Bagels, Seaford
- Baked Goods, Snacks & Sweets, Seaford
- Bakeries, Seaford
- Balloons - Novelty, Toy & Decorative, Seaford
- Bankruptcy Attorneys & Lawyers, Seaford
- Bankruptcy Attorneys & Lawyers, Seaford
- Bankruptcy Lawyers & Attorneys, Seaford
- Banks, Seaford
- Baptist Churches, Seaford
- Barber Shops, Seaford
- Barbers, Seaford
- Bars, Seaford
- Bars & Grills, Seaford
- Bathroom Remodeling, Seaford - Bathroom Remodel & Planning Services
- Battery, Seaford - Retail Batteries Stores
- Battery Storage, Seaford
- Beauty Salons, Seaford
- Bedding & Linens Stores, Seaford - Bed Sheets, Quilts and Coverlets, Cushions, Pillows, Slipcovers & Bed & Table Linens
- Bedroom Furniture Stores, Seaford - Master & Kids Bedroom Furniture Sets & Beds
- Beer & Wine Stores, Seaford
- Beer Taverns, Seaford
- Beverage Dispenser Supplies & Equipment , Seaford - Beverage Dispensing
- Beverage Stores, Seaford
- Bird Repellent, Barrier & Control, Seaford
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- Boating & Swimming Clubs, Seaford
- Boats & Yachts, Seaford - Yachts, Sailboats & Boats for Sale
- Bonds, Seaford
- Books, Magazines & Newspapers Stores, Seaford - Bookstores
- Brake Service & Repair, Seaford - Brake Pads
- Breakfast Restaurants, Seaford
- Bricks, Blocks & Stone Products, Seaford - Companies, Wholesale, Manufacturers & Suppliers
- Buffet Restaurants, Seaford
- Builders & Contractors, Seaford
- Builders & Contractors - More, Seaford
- Builders Hardware Stores, Seaford
- Building & Property Maintenance & Services, Seaford
- Building Construction Consultants, Seaford - Construction Management & Consulting
- Building Hardware & Materials, Seaford
- Building Inspection Services Commercial, Seaford
- Building Materials, Seaford - Wholesale, Manufacturers, Dealers & Suppliers
- Building Materials & Supplies, Seaford
- Burglar & Alarm Service, Seaford - Monitoring Service
- Burglar Alarm Systems, Seaford
- Business & Professional Associations, Seaford
- Business Forms, Systems & Supplies, Seaford
- Business Insurance, Seaford
- Business Legal Services, Seaford
- Business Management Consultants, Seaford
- Business Services, Seaford
- Business, Vocational & Technical, Seaford
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