- Land Surveyor, South Houston - Land Surveying Services
- Landscape Contractors & Designers, South Houston
- Landscaping, South Houston
- Late Night Restaurants, South Houston
- Laundromats & Dry-Cleaning, Coin-Operated, South Houston
- Laundry Equipment Rental & Leasing, South Houston
- Laundry Self Service, South Houston
- Lawyers & Attorneys, South Houston
- Legal & Tax Services, South Houston
- Legal Professionals, South Houston
- Life Insurance, South Houston
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- Lighting Maintenance, South Houston
- Liquor Stores, South Houston
- Loans Personal, South Houston
- Locks, South Houston
- Locksmiths, South Houston - Residence, Commercial, Safe & Auto Car Locksmith
- Locksmiths Equipment & Supplies, South Houston
- Lodging, South Houston
- Lodging Services, South Houston
- Long Haul Trucking Companies, South Houston
- Lp Gas Equipment & Supplies, South Houston
- Lumber & Wood Products Manufacturers, South Houston
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