"Cold Steel" by Terry Johnston // CC BY 2.0

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Verified License

Cox, Andrew M

this is my business

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Best Plumbers in Preston

Updated: Mar 14, 2026

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Verified License

License #	COX*AAM848L7
Status	Active
State	Washington
Type	Plumber, Plumber
Business Type	Individual

BuildZoom verified this license was active as of March 2026.

Verify this license's status for Cox, Andrew M at the Washington State Department of Labor & Industries.

This is a sample of licensing data; click here to access a complete history.

License Not Verified

License #	COX AAM848L7
Status	Active
State	Washington
Type	Plumber
Business Type	Individual

When BuildZoom last verified this license, it had an expiration date of November, 2017. Check the current license status of Cox, Andrew M with the Washington State Department of Labor & Industries

This is a sample of licensing data; click here to access a complete history.

License Not Verified

License #	COX AAM955CD
Status	Active
State	Washington
Business Type	Individual

When BuildZoom last verified this license, it had an expiration date of November, 2016. Check the current license status of Cox, Andrew M with the Washington State Department of Labor & Industries

This is a sample of licensing data; click here to access a complete history.

Inactive License

License #	COXAAM955CD
Status	Inactive
State	Washington
Business Type	Individual

According to the Washington State Department of Labor & Industries, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.

Check this license's status for Cox, Andrew M at the Washington State Department of Labor & Industries.

This is a sample of licensing data; click here to access a complete history.

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BuildZoom Score

How the BuildZoom Score works
*No active license on file. If you are Cox, Andrew M, click “This is My Business” to update your information.

Follow this contractor

Before you Hire

Here are some rules, regulations, and laws governing general contractors in Washington:

Does Cox, Andrew M carry a valid contracting license?

Any work that impacts the value of real estate in Washington, requires a licensed contractor.

Cox, Andrew M currently holds license COX*AAM848L7, COX AAM848L7, COX AAM955CD, COXAAM955CD (Plumber), which was Active when we last checked.

How important is contractor licensing in Washington?

The Washington State Department of Labor & Industries requires licensees to maintain a bond and liability insurance for the protection of consumers.

Your liability risk when hiring Cox, Andrew M

Licensed contractors in Washington are required to maintain general liability coverage that includes a $50,000 property damage policy and $200,000 public liability policy; or $250,000 combined single limit policy.

Financial recourse when hiring Cox, Andrew M

Licensed general contractors in Washington are required to maintain a $12,000 bond and specialty contractors are required to maintain a $6,000 bond. This provides consumers with financial recourse in case they perform defective work or violate license regulations.

How is the BuildZoom score calculated?

The BuildZoom score is based on a number of factors including the contractor's license status, insurance status, verified work history, standing with local consumer interest groups, verified reviews from other BuildZoom users and self-reported feedback from the contractor.

Why you should hire through BuildZoom

When it comes to major construction work or even minor alterations to your home, hiring the wrong contractor could result in incomplete or defective work. You may even find yourself dealing with huge liability claims. BuildZoom does the homework for you and helps you hire the right contractor.

You should get several bids before hiring a contractor

The standard board recommendation is to get at least three written bids before hiring a contractor. Do not automatically accept the lowest bid - an abnormally low bid may indicate the contractor made a mistake and is not including the same work quoted by their competitors. We've made the bid collection process extremely simple (and free). Just click here to get started.

The best way to use BuildZoom is to let us recommend contractors for your remodeling projects.

Homeowners who hire through BuildZoom's free bidding system report high rates of satisfaction, and homeowners who research contractors online are twice as likely to be happy at the end of their project.

If you hire a contractor through BuildZoom, that contractor is accountable to us. We can enforce standards of behavior, mediate disputes, and guarantee satisfaction.

Read more about why hiring through BuildZoom is so effective.

BuildZoom’s database now contains every licensed contractor across the U.S. - over 2.5 million of them... Categorized contractor profiles are enriched using government data from state licensing boards, Better Business Bureau ratings, and more… BuildZoom jumped into the fray by announcing that it raised $10.6 million in a round led by Formation 8. ...the Y combinator-backed startup said it will be focused on remodeling projects, where the median budget is around $19,000… A new index compiled by BuildZoom — which identifies contractors for projects — found that renovations are running 2.8 percent above their 2005 level…

Browse remodeling photos

If you are looking for remodeling ideas, you can browse hundreds of beautiful photos of work performed by our general contractors.

Browse building permits

You can use our building permit search to see the contractors who are active in your neighborhood and the projects currently taking place.

Get a cost estimate

Use our remodeling calculator to get a ballpark estimate for your project. If you're ready to hire, use our bidding system to get actual quotes from local contractors.