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BZ SCORE: 92

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Mast Vinyl Windows

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BZ SCORE: 92

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Updated: Mar 12, 2026

Mast Vinyl Windows LLC

Mast Vinyl Windows LLC, 22172 HWY 63 Hwy, Bloomfield, IA (Owned by: Henry Mast) holds a Contractor license according to the Iowa license board.

Their BuildZoom score of 92 ranks in the top 32% of 39,764 Iowa licensed contractors.

Their license was verified as active when we last checked. If you are thinking of hiring Mast Vinyl Windows LLC, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.

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Verified License

License #	C137398
Status	Active
State	Iowa
Type	Contractor
Date Issued	09-05-2025
Business Type	Other

BuildZoom verified this license was active as of March 2026.

Verify this license's status for Mast Vinyl Windows LLC at the Iowa Workforce Development Agency.

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

92

BuildZoom Score

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Bond Value

$25,000

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Before you Hire

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

Does Mast Vinyl Windows Llc carry a valid contracting license?

Although a contractor license is not required in the state of Iowa, contractors earning more than $2000 per year from construction related work must register their business with the Iowa Division of Labor.

Mast Vinyl Windows Llc currently holds license C137398 (Contractor), which was Active when we last checked.

How important is contractor licensing in Iowa?

In Iowa, general contractors are not required to pass an exam to become licensed. However, plumbing and electrical contractors do have to pass a trade exam to obtain a license in Iowa.

Your liability risk when hiring Mast Vinyl Windows Llc

Registered contractors in Iowa are required to carry an active workers' compensation policy. In addition to workers' compensation insurance, it is always a good idea to hire contractors with general liability insurance. Be sure to request copies of certificates for both workers' compensation and general liabilty insurance

Financial recourse when hiring Mast Vinyl Windows Llc

Depending on the city, Iowa contractors may be required to obtain a surety bond. If applicable, homeowners can file a claim against this bond in the event of faulty work or damaged property.

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

Before hiring a contractor in Iowa, be sure to get at least 3 detailed bids. Quality contractors will take the time to explain their budget proposal, and help guide you through the estimate process. Be wary of an abnormally low bid, they are not worth the risk. These underpriced projects often do not end well for the homeowner, choose a contractor you trust and can clearly communicate with. BuildZoom has 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…

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