American One Insurance Agency LLC

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American One Insurance Agency LLC Hablamos español. Más de 30 compañías para ofrecerte. Insurance Protection & Coverage at a fair Call us for a FREE quote at (414) 539-4036.

We specialize in insurance products for individuals and businesses. with a competitive rate and quality coverage to protect your most valued possessions. With over 40 insurance carriers to choose from, we are your one stop shop for all of your insurance needs and to buy house or refinance your loan. American One Insurance LLC proud to be a part of BWO insurance Group LLC. We are prepared to provide you with a no cost, no obligation review and comparison of your insurance.

10/03/2026

The Latino Chamber of Commerce of SE Wisconsin recognizes Karina Castillo, founder of American One Insurance Agency LLC.

Originally from Mexico, Karina began her career at her father’s insurance agency, where she built her industry knowledge and commitment to client service. After moving to the United States, she worked as a loan officer before returning to insurance as a broker. In 2011, she founded American One Insurance to serve the Spanish-speaking community better.

Today, Karina helps families and business owners understand their home, auto, and commercial coverage options. Through education, personalized service, and trust, she helps clients make confident decisions as their needs change.

“Karina saw a need in her community and built a business to meet it. Her commitment to educating clients shows how an entrepreneur can create opportunity while helping others protect what they have built.”
— Dr. Nelson Soler

Thank you, Karina, for the example you set for the next generation.

If you have questions on how funeral preplanning can benefit you, give our team a call!
10/02/2026

If you have questions on how funeral preplanning can benefit you, give our team a call!

10/02/2026
09/22/2026

Protect what's yours. 💎
Your jewelry holds more than value. It holds meaning. Make sure it’s protected with insurance coverage designed for life’s most precious pieces.

09/15/2026

From holiday gatherings to cherished family traditions, these are the memories that last a lifetime. Help protect the loved ones who make every season special with life insurance. 🎄

Strong roofs start with strong businesses. 🔨You help protect your customers' homes and investments every day. Make sure ...
09/08/2026

Strong roofs start with strong businesses. 🔨
You help protect your customers' homes and investments every day. Make sure your business has the protection it needs to keep moving forward.

You protect what matters to your customers. 🏠Help protect your crew, equipment, and business with coverage designed to s...
09/01/2026

You protect what matters to your customers. 🏠
Help protect your crew, equipment, and business with coverage designed to support the work you do every day.

08/28/2026
08/25/2026

Strong safety practices help build stronger businesses. 👷
Safety is the foundation of every successful roofing project. Explore these practical loss control tips to help commercial and residential roofing contractors minimize risks and keep crews protected.

08/18/2026

Owning a car wash means thinking beyond today's wash count. Business perpetuation planning can help provide clarity and confidence for whatever the future brings. 🚘

Address

3920 S 27th Street Suite D
Milwaukee, WI
53214

Opening Hours

Monday 8am - 4pm
Tuesday 8am - 4pm
Wednesday 8am - 4pm
Thursday 9am - 5pm
Friday 8am - 4pm
Saturday 10am - 1pm

Telephone

+14145394036

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