Azteca/Preferred Plumbing

Always ask for references, and always check them. Keep in mind though that the only references you'll get are people who the contractor is certain will give him a good review. You'd also be well advised to check online review sources in Castro Valley as well, which will give you a broader view of customer satisfaction for a given company.

You'll always want to ask how long the company has been in business in Castro Valley. While this isn't a guarantee that the company will do good work, companies with longevity on their side must be doing something right. That being said, there are newer companies that do great work. If the company is under three years old, ask where the owner was employed before and for how long. If he/she has a long history of employment, it's reasonable to infer that he or she decided to go into business for themselves after so many years of experience.

The question is great for some industries and non-applicable for others. A general contractor, for example, will by definition employ subcontractors. Most Castro Valley Plumbing companies do not, but there are exceptions. You should always ask this question to your service providers. If they do use subcontractors, ask if they're all licensed and insured independently.

Some companies may require a 10% deposit, some may not require any. For larger projects, you'll almost always need to give a deposit, and it's good to ask how much the deposit will be before going forward with a project. The Castro Valley contractor will know how much they need for a deposit when they've given you the estimate, so ask early.