Built on Faith. Built on Integrity. Built to Last.

Save 25% on Replacement Windows and Bathroom & Kitchen Remodeling Projects!

Expert Kitchen, Bathroom Remodeling, and Window Replacement Contractor

Serving La Crosse and Onalaska, WI

Your Local Replacement Window and Remodeling Company!

Serving La Crosse and Onalaska, WI

At Firm Foundation Construction, we believe great construction starts with a strong foundation, not just in structure, but in values. Your home is more than just a building; it's a blessing, and we treat it that way.

 

With 14 years of proven experience, we proudly serve homeowners throughout La Crosse, Onalaska, Holmen, West Salem, Trempealeau, and surrounding Western Wisconsin communities. Whether you're looking to transform your kitchen or bathroom remodel, upgrade your home with quality roofing and siding installation, or enhance your exterior with window and door replacement, our mission is to provide "white-glove" service rooted in honesty, craftsmanship, and transparency.

Firm Foundation Construction Team
Job Types

Built on Faith. Built on Integrity. Built to Last.

Save 25% on Replacement Windows and Bathroom & Kitchen Remodeling Projects!

Firm Foundation Construction Team

Our Remodeling Services

At Firm Foundation Construction, we're the trusted replacement window company, bathroom remodeling experts, and renovation contractor serving the greater La Crosse area. We specialize in high-quality replacement windows, beautiful bathroom remodels, and complete home remodeling services. Our team is committed to exceptional craftsmanship, honest service,

and lasting value on every project.

Modern two-story house with stone and blue siding, lit windows, and a three-car garage at dusk

Energy Replacement Windows

Stop the drafts and lower your energy bills with American-made windows and doors. We combine the latest in glass technology with the highest-rated steel entry doors to keep your home quiet, comfortable, and secure in every season.

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Modern bathroom with glass shower, toilet, and dark wood vanity with large mirror
Stone house entry with wooden door, lanterns, and potted flowers on the porch

Doors

Upgrade your home with new doors that improve style, security, and energy efficiency. Whether you’re replacing a front door, installing sliding glass doors, or updating all the doors in your home, modern options add beauty, comfort, and lasting value.

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Close-up of a house roof with gray shingles and multiple gabled sections

Roofing

Protect your home with professional roofing services designed to keep your property safe and secure. From hail and wind damage inspections to roof repairs, complete re-roofs, and new roof installations, we provide dependable workmanship and quality materials built to withstand the elements and add lasting value to your home.

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Modern green house with white trim and dark gray roof under a blue sky

Siding

Upgrade your home’s exterior with siding built to withstand harsh Midwest weather. Our premium steel and fiber-cement options don’t just beautify your home; they provide maximum energy efficiency and fire resistance with virtually no maintenance required.

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Wide wooden deck beside a beige house, overlooking a grassy yard and leafless trees under a blue sky

Why Choose Firm Foundation Construction?

Choosing a contractor is about more than just a price tag; it is about finding a partner you can trust with your home and your family. Here is how we stand apart.

Office building with sign for FFC: remodeling, plumbing, bathrooms, siding, patios, and decks.

14 Years of Proven Experience

As a licensed and insured contractor, we bring over a decade of hands-on expertise to every job site. We have a long track record of successful projects across Western Wisconsin, giving you the peace of mind that your home is in the hands of seasoned professionals.

Faith-Based Integrity

Our values are the foundation of our business. We operate with honesty and transparency in every interaction, treating your property with the respect it deserves. We believe in doing the right thing even when no one is looking, ensuring a project that is built on trust.

Unmatched Customer Service

We believe in a "white-glove" experience that prioritizes clear communication and respect for your daily life. From the first consultation to the final cleanup, we maintain a professional workspace and ensure there are no surprises or hidden costs.

Premium USA-Made Materials

We are proud to support American workers and manufacturing by exclusively using high-quality products made in the United States. By selecting brands like Pella, Malarkey, and TimberTech, we provide materials engineered specifically to withstand the harsh Wisconsin climate.

We Offer Financing!

  • 0% Promotional APR
  • Financing Available
  • Up to $200,000 Loans
  • 1-12 Year Terms

Amish Partnership with Levi

Firm Foundation Construction proudly partners with our Amish craftsman, Levi, to create beautiful custom woodwork. From cabinets and vanities to trim, doors, built-ins, and hardwood flooring, every piece is built with quality and care.

Wood-paneled ceiling with exposed wooden beams above a room with warm wall lights.
Empty room with light wood floors and two windows, viewed from a low angle
Workshop with stacks of unfinished wooden boards and benches inside a large storage space

Our Process

A Simple, Honest Path to Your Project’s Completion

Free Consultation and Inspection

We begin by visiting your home to discuss your vision or assess any damage. Whether you are planning a luxury remodel or need a post-storm roof inspection, we provide a detailed, honest assessment at no cost to you.

Material Selection and Design 

We guide you through choosing premium, American-made products that fit your lifestyle and our Wisconsin climate. From custom Amish cabinetry for your kitchen to impact-rated shingles for your roof, we ensure you have the best materials for a lifetime of durability.

Final Walkthrough and Warranty Support

A project isn’t finished until every detail meets our high standards of craftsmanship. We perform a thorough final inspection with you, register your manufacturer warranties, and ensure you are completely confident in your home’s "firm foundation."

Professional Installation

Our expert tradesmen and foremen lead the build with rigorous quality control. We treat your property with the utmost respect, maintaining a clean workspace and providing regular updates so you always know exactly what to expect.

Free Consultation and Inspection

We begin by visiting your home to discuss your vision or assess any damage. Whether you are planning a luxury remodel or need a post-storm roof inspection, we provide a detailed, honest assessment at no cost to you.

Material Selection and Design 

We guide you through choosing premium, American-made products that fit your lifestyle and our Wisconsin climate. From custom Amish wood products to impact-rated shingles for your roof, we ensure you have the best materials for a lifetime of durability.

Professional Installation

Our expert tradesmen and foremen lead the build with rigorous quality control. We treat your property with the utmost respect, maintaining a clean workspace and providing regular updates so you always know exactly what to expect.

Final Walkthrough and Warranty Support

A project isn’t finished until every detail meets our high standards of craftsmanship. We perform a thorough final inspection with you, register your manufacturer warranties, and ensure you are completely confident in your home’s "firm foundation."

Check Out Our Before and After Transformations

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