- Land Surveyor, Oakland - Land Surveying Services
- Landscape Contractors & Designers, Oakland
- Landscaping, Oakland
- Landscaping Materials & Supplies, Oakland
- Lawn & Garden Equipment & Supplies, Oakland
- Lawn & Garden Services, Oakland
- Lawn Maintenance Services, Oakland
- Lawyers & Attorneys, Oakland
- Legal Professionals, Oakland
- Libraries, Oakland
- Life Insurance, Oakland
- Liquor Stores, Oakland
- Live Theaters, Oakland
- Livestock, Oakland
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- Loans Personal, Oakland
- Local & Short Haul Trucking Companies, Oakland
- Locks, Oakland
- Locksmiths, Oakland - Residence, Commercial, Safe & Auto Car Locksmith
- Locksmiths Equipment & Supplies, Oakland
- Lodging, Oakland
- Loggers, Oakland
- Long Haul Trucking Companies, Oakland
- Lumber & Lumber Products, Oakland
- Lumber & Lumber Products, Oakland
- Lumber Brokers, Oakland
- Lumber Companies, Oakland - Wholesale, Manufacturers & Suppliers
- Lutheran Church, Oakland
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