Milwaukee's choice for sunrooms, porch conversions and home improvements from remodeling to room additions!

Please call Sales and Service at 262-364-7655

Our installation crews are available for communities throughout Southeastern Wisconsin,
including Milwaukee, West Allis, Racine, Hartford, Kenosha and our lakeside communities.

Select Millennium Windows and Sunrooms for your sunroom or porch conversion project.

Integrity, quality of materials and workmanship, and standing by our work is the foundation of our relationship with each and every customer and sunroom we’ve built since 2000. We hope you allow us to quote on your sunroom or porch conversion plans. We’ll try to make the experience pleasant without high-pressure sales.

image shows family enjoying meal in sunroom. Presented by Millenium Windows and Sunrooms in West Allis, WIConcerned over sunroom costs? Your Millennium Windows and Sunrooms representative will help you set your budget and find financing if needed. No need to delay your dreams of enjoying your new sunroom, entertaining friends and family or just taking some private time for yourself.

Yes, we can build glass sunrooms, as well as  three season sunrooms, and all season sunrooms with long-lasting, easy-to-clean vinyl windows. We provide complete construction services, with professional crews who show up on time and leave your yard and home free of untidy construction materials.

Take the next step and call Sales and Service at 262-364-7655 or use our online Request a Free Estimate form. We’ll stop for a free consultation and estimate when it’s convenient for you.

“After having four windows and three doors replaced by Millennium, we want to let people know what a wonderful job this company did, and how pleased we are with the work.  Not only are the windows beautiful, but they are very ergonomic (designed for maximum comfort, efficiency, safety, and ease of use).

They also seem to be energy efficient, reflecting the wind, cold and sun.The best part was the gentlemen that installed them.  Mark and Kyle were so friendly, and they did excellent work.  We really appreciated how polite and helpful they were – and hard working.

Thanks again for doing a great job.  We are absolutely thrilled with our new windows and doors.”

Read more customer reviews.

Dick and Mary K.

Menomonee Falls, WI

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Take advantage of our 12-months No Payments, No Interest Plan for qualified buyers. Start enjoying your sunroom lifestyle now. 

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image shows map of Wisconsin with markers for communities Mellenium Windows and Doors builds sunrooms, decks, patio covers, pergolas, patio enclosures, screen rooms, replacement windows and custom additions
Read more about our sales and installation areas. If you don’t see your community listed, feel free to call us at 262-894-1431.

We’re proud to present our catalog of home improvements services, including sunrooms, decks, patio covers, patio enclosures, pergola arbors, screen rooms, replacement windows and custom additions. Millenium Windows and Sunrooms’ design and building specialists select the right materials and apply our skilled craftsmanship to each job, regardless of size or budget.

image shows sunroom built by Millennium Windows and Sunrooms in West Allis, WI.


Millennium Windows and Sunrooms builds All Season and Three Season sunrooms with glass or sliding vinyl windows. Find out more.

image shows patio cover built by Millennium Windows and Sunrooms in West Allis, WI

Patio Covers

We can install a patio cover for your backyard enjoyment. Find out more. 

Replacement Windows

Millennium Windows and Sunrooms specializes in replacement windows throughout Southeastern Wisconsin. Find out more. 

image shows backyard deck built by Millennium Windows and Sunrooms in West Allis, WI


America loves backyard decks and Milwaukee is no exception. Find out more. 

Patio Enclosures

Enclose your patio and give yourself and your family extra space to entertain or relax. Find out more

Custom Additions

Expanding your home with a new addition? We can manage your project from design to build. Find out more.

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