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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 25 customer reviews

Map of Sauk City, WI

Window and Door Replacements




Review of Ganser Company Inc.

We love our new Marvin windows and doors from The Ganser Company. We had a few little errors in order entry, but all was fully and promptly rectified and we are very happy! The sales and installation staff are very professional and customer-service oriented and a true pleasure to work with. The windows, patio door, and Provia front entry door are beautiful, smooth-operating, and bring wonderful light into our home while protecting it from the elements. Even during a pandemic, they were able to make this big project happen, for which we are grateful. Thank you, Ganser Company, for a great upgrade to our home.


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.


Kevin M.

Kevin M.

Entry door and window

Near Dougherty Ct, Ridgeway, WI 53582
Ridgeway, WI - Entry door and window
Kevin M.

Kevin M.

Siding windows

Near Tam O Shanter Trail, Sun Prairie, WI 53590
Sun Prairie, WI - Siding windows
Kevin M.

Kevin M.

Siding

Near S Owen Dr, Madison, WI 53711
Madison, WI - Siding
Kevin M.

Kevin M.

Adding a sun tunnel

Near Vickiann St, Verona, WI 53593
Verona, WI - Adding a sun tunnel
Kevin M.

Kevin M.

Gutter replacement

Near Center Ave, Madison, WI 53704
Madison, WI - Gutter replacement
Kevin M.

Kevin M.

Window replacement

Near Ring St, Madison, WI 53714
Madison, WI - Window replacement
Kevin M.

Kevin M.

Bathroom remodel

Near Clark St, Middleton, WI 53562
Middleton, WI - Bathroom remodel
Kevin M.

Kevin M.

Window replacement, past customer

Near Maple Run Dr, Madison, WI 53719
Madison, WI - Window replacement, past customer
Kevin M.

Kevin M.

Siding and windows

Near Academy Dr, Madison, WI 53716
Madison, WI - Siding and windows
Kevin M.

Kevin M.

Bathroom remodel

Near Grand Canyon Dr, Madison, WI 53705
Madison, WI - Bathroom remodel