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Our Service Areas

Proudly Serving Dane County & Southern Wisconsin

Get Exceptional Service From a Locally Owned & Operated Company

Ganser Company has been providing exceptional home improvement services for over 80 years. If it’s your home exterior that needs attention, our family-owned, locally owned and operated company offers installation of windows, doors, skylights, roofing, gutters, siding, insulation and many related services. For the interior of your home, we offer full bathroom remodeling.

We are proud to serve our neighbors in the following Wisconsin counties:

Contact us today at (608) 222-1243 or reach us online to discuss your project and schedule a free quote!

Local Reviews

Ganser Company Inc. Rated 5.0 out of 5 stars based on 24 customer reviews

Map of Madison, WI

Very professional and high quality




Review of Ganser Company Inc.

The windows look wonderful and were exactly what we wanted. The service and installation were very professional and high quality.


Map of Madison, WI

Good service, at a respectable price




Review of Ganser Company Inc.

Had a deck door and updated gutters put in by Ganser. Process went really smoothly, they kept in constant contact in the time leading up to the install for any status updates, and the price was fair. I'd go back to them again.


Map of Oregon, WI

Awesome Job




Review of Ganser Company Inc.

Jason was honest and fun to work with. He did a great job with planning our project. The installers were awesome. The work was done quick and perfect. The new windows look great and the woodwork looks better than the original. Our repainted front door is just what we wanted.


Map of Madison, WI

Promises made and delivered




Review of Ganser Company Inc.

From the time we met with Chris to the time that Pete, Nick and Mark cleaned up the worksite, we were pleased and impressed.We would recommend to family and friends.


Map of Madison, WI

Bathroom Gut Rehab




Review of Ganser Company Inc.

I am extremely pleased with the workmanship, timing, communication, thoroughness of the contractors. thank you for a job very well done!


Map of New Glarus, WI

service with integrity and dignity




Review of Ganser Company Inc.

The lead person on the 2 man crew was careful, very efficient, clean, polite, good to his subordinates and knew the job! He worked as hard as 2 people to get our remodel done and in perfect shape! We are very pleased with end result.


Map of Sun Prairie, WI

great service




Review of Ganser Company Inc.

Jason was great, we are getting everything we want done & the cost is great


Map of Wisconsin Dells, WI

Jason had great ideas!




Review of Ganser Company Inc.

We told Jason what we thought we wanted and he made it happen and more. We look forward to working with him next year on another window project! We haven’t had the windows installed yet.


Map of Madison, WI

House Updated




Review of Ganser Company Inc.

Wow, our house has been transformed by Ganser Company from top to bottom (literally)! They provided us with a new roof, gutters, downspouts, siding, windows, and sliding glass door. Plus added additional insulation in the attic to increase the R value. Our 1983 house has been updated for the 21st century and looks brand new! Our neighbors all love how it looks as much as we do. We are so proud every time we pull into our driveway.


Map of Fitchburg, WI

Entire Bathroom Remodel




Review of Ganser Company Inc.

This project was the complete remodeling of a bathroom-from-hell.I was very satisfied with the quality of the work and the punctuality, work ethic, friendliness, and respectfulness of Mark, David and David. Work included tearing down walls and remodeling of a tiny, poorly laid out bathroom, including re-piping, new electrical outlets, shower drain relocation in foundation, installation of lovely shower unit, toilet, and vanity, drywalling and priming. Result was a much expanded and spacious, bright, and modern bathroom. We are very pleased.


Kevin M.

Kevin M.

Bath remodel

Near Barby Ln, Madison, WI 53704
Madison, WI - Bath remodel
Jason H.

Jason H.

Final walk through for LP siding

Near South Ct, McFarland, WI 53558
McFarland, WI - Final walk through for LP siding
Jason H.

Jason H.

Final walk through for window project

Near Chestnut St, Sauk City, WI 53583
Sauk City, WI - Final walk through for window project
Kevin M.

Kevin M.

Skylight replacement

Near Mohican Pass, Madison, WI 53711
Madison, WI - Skylight replacement
Kevin M.

Kevin M.

This customer decided it was time to finish the attic and update their windows while they are at it! From the help of Infinity from Marvin, it has never been easier to add stunning windows into their attic and create a fresh new look to their home.

Near Colby St, Madison, WI 53715
Madison, WI - This customer decided it was time to finish the attic and update their windows while they are at it! From the help of Infinity from Marvin, it has never been easier to add stunning windows into their attic and create a fresh new look to their home.
Chris K.

Chris K.

Time to update the bathroom

Near Stonehaven Dr, Sun Prairie, WI 53590
Sun Prairie, WI - Time to update the bathroom
Chris K.

Chris K.

Time to update the bathroom

Near Miller St, Sun Prairie, WI 53590
Sun Prairie, WI - Time to update the bathroom
Kevin M.

Kevin M.

Bath to shower conversion

Near Sunfish Ct, Madison, WI 53713
Madison, WI - Bath to shower conversion
Kevin M.

Kevin M.

Entry door

Near Whytecliff Way, Sun Prairie, WI 53590
Sun Prairie, WI - Entry door
Marc G.

Marc G.

Window Replacement

Near Bordeaux Dr, Janesville, WI 53546
Janesville, WI - Window Replacement