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Q: Does an egress window weaken the foundation?

• <div><p>If improperly installed, an egress window can compromise your foundation&rsquo;s structural integrity, so it&rsquo;s important to work with a pro to ensure your foundation remains in good shape. Any money you may save on a DIY egress window installation may cost you in the long run if your foundation is damaged in the process.</p></div>

Q: What is the average lifespan of a house foundation?

• <div><p>The average home foundation lasts between 80 and 100 years, but some can last much longer with proper maintenance and routine inspections. The lifespan depends on the foundation type, soil conditions, climate, and construction quality. Poured concrete walls can last up to 200 years, brick or stone foundations over 100 years, cement block foundations 80 to 100 years, and pier foundations about 75 years. Factors that can shorten a foundation's life include expansive clay soil, poor weather conditions, low-quality building materials, improper construction, and tree roots. Signs of damage include sloping floors, bowing walls, cracks, and doors or windows that stick.</p></div>

Q: What methods are used for foundation repair?

• <div><p>Foundation repair uses methods such as underpinning, slab jacking, or application of hydraulic piers. Each technique is chosen based on structural needs, soil conditions, and damage extent, ensuring a stable and secure foundation.</p></div>

Q: How much does foundation repair cost?

• <div><p><a href="https://www.angi.com/articles/how-much-does-foundation-repair-cost.htm">Foundation repairs cost</a> about $5,000, on average. Typically, prices range from $2,200 to $7,800, depending on the type and extent of repairs needed. Cost factors include foundation type, home size, soil stability, accessibility, and the ultimate cause of the problem and what methods and materials are required to fix it.</p></div>

Q: Can a slab leak cause a sinkhole?

• <div><p>It is possible for a slab leak to cause a sinkhole, but it would have to be a particularly serious leak. A slab leak causes the land under your home to erode and if there is enough movement depressions will form in the ground, potentially causing a sinkhole.</p></div>

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Verified Reviews for Foundation Repair pros in Forsyth, MT

*The Angi rating for Foundation Repair companies in Forsyth, MT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Foundation Repair needs.

*The HomeAdvisor rating for Foundation Repair companies in Forsyth, MT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Foundation Repair needs.

Last update on May 07, 2026

Reviewed in May 2026
My home is small and pretty straight forward, but his crew arrived 100 miles out from Billings and got right to work. On and off in a days' time and cleaned when they left! Correspondence was phone, text and paper, done professionally.
Diamond Roofing and Solar, LLC
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Reviewed in April 2024
My go to for all our needs! A contractor who has attention to detail. Was flexible with my thoughts and allowed a changes during the work.
Blackwell Custom LLC
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Reviewed in June 2022
Timely, friendly and affordable service! I will be using Big Horn Appliance Repair in the future!
Big Horn Appliance Repair and Maintenance
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Reviewed in November 2021
Excellent company. Professional and timely work completed and even finished ahead of schedule. Simple process from beginning to end and look forward to doing business with them again in the future. Would 100% recommend to others!
Renewal by Andersen of Montana
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Reviewed in December 2012
I would not recommend the Ashley furniture store in billings mt. I am a newly wed and me and my wife went into Ashley to purchase a furniture set. We were looking at this brown Swed set. We were told by the first salesman that it was included in the 20% off category so we said we would take it...
ASHLEY FURNITURE
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Find Foundation repair specialists in Forsyth

Groundworks

4.3(

)

Serving Forsyth, MT and surrounding areas

Approved (Corporate)

In business since 2010

Free estimates

Warranties offered

"we had concrete pads added after home construction. One pad had a 2 inch settlement on one corner. Complicating this was a stone wall sitting atop the pad. Excellent restoration was done by Groundworks From Bozeman. After a thorough evaluation by Ben, Chelsea and Tyler were prompt, educational and successful. I Highly recommend this company for your concrete/foundation needs."

+16

Response time2 days

52 neighbors recently requested a quote

Recommended by72%of homeowners

Serving Forsyth, MT and surrounding areas

Approved

In business since 2019

Free estimates

Warranties offered

"Ty arrived on time. He is very professional and personable. He assessed the problem immediately and fixed it!! It’s good as new again and I am very impressed and very happy!"

+28

Response time3 days

19 neighbors recently requested a quote

Recommended by33%of homeowners

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TCH Builders & Remodeling

4.0(

)

Serving Forsyth, MT and surrounding areas

In business since 1999

Emergency services offered

Credit card accepted

If you dream it, we can build it. What's the biggest difference between us and them? We build to last! We offer a full line of Green and Energy Star Certified products, backed by our labor and manufacturer's lifetime transferable warranties. Credit Cards Welcome Financing Available OAC.

Recommended by100%of homeowners

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Hampton Enterprise LLC

3.7(

)

Serving Forsyth, MT and surrounding areas

In business since 1989

Free estimates

Emergency services offered

"They were good. They were pretty fast and came on time. My overall experience with them has been good."

Recommended by60%of homeowners

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J & J Landscaping and Construction

New to Angi

Serving Forsyth, MT and surrounding areas

In business since 2014

Free estimates

It can be a daunting task looking for not only the right contractor for your job but also the right contractor for you. We completely understand what you're going through. We know every customer has different desires, different needs and different schedules. We're not only here to turn your ideas into reality but to make it a memorable experiences every step of the way. Call us right now, no matter where you are in the planning process.

Response time2 days

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Ostermiller Construction LLC

New to Angi

Serving Forsyth, MT and surrounding areas

In business since 2023

Free estimates

Credit card accepted

Ostermiller Construction LLC in Shepherd, MT specializes in concrete, asphalt, curb, driveway, walkway, sidewalk, parking lot construction, and dirt work. We offer free estimates.\n\nWe serve in Shepherd, MT, Broadview Town MT; Roundup MT; Camp Three MT; Klein MT; and the surrounding areas.\n\nAsphalt Repair, Asphalt Contractor, Asphalt Driveway Repair, Asphalt Crack Repair, Parking Lot Asphalt Repair\nConcrete Service\n\nFor more information visit our website: https://constructionshepherdmt.com/

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Home Owners Concrete

New to Angi

Serving Forsyth, MT and surrounding areas

In business since 2018

Free estimates

Credit card accepted

We invite you to experience a tradition of customer satisfaction that will exceed your greatest expectations. Our professionalism and quality workmanship will accurately reflect your taste and lifestyle. From conception to completion, we work with you until the job is done. We are ethical, honest, and easy to communicate with.\nCall us today you'll be pleased you did. Thank you\n

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Foundation Repair questions, answered by experts

If improperly installed, an egress window can compromise your foundation’s structural integrity, so it’s important to work with a pro to ensure your foundation remains in good shape. Any money you may save on a DIY egress window installation may cost you in the long run if your foundation is damaged in the process.

The average home foundation lasts between 80 and 100 years, but some can last much longer with proper maintenance and routine inspections. The lifespan depends on the foundation type, soil conditions, climate, and construction quality. Poured concrete walls can last up to 200 years, brick or stone foundations over 100 years, cement block foundations 80 to 100 years, and pier foundations about 75 years. Factors that can shorten a foundation's life include expansive clay soil, poor weather conditions, low-quality building materials, improper construction, and tree roots. Signs of damage include sloping floors, bowing walls, cracks, and doors or windows that stick.

Foundation repair uses methods such as underpinning, slab jacking, or application of hydraulic piers. Each technique is chosen based on structural needs, soil conditions, and damage extent, ensuring a stable and secure foundation.

Foundation repairs cost about $5,000, on average. Typically, prices range from $2,200 to $7,800, depending on the type and extent of repairs needed. Cost factors include foundation type, home size, soil stability, accessibility, and the ultimate cause of the problem and what methods and materials are required to fix it.

It is possible for a slab leak to cause a sinkhole, but it would have to be a particularly serious leak. A slab leak causes the land under your home to erode and if there is enough movement depressions will form in the ground, potentially causing a sinkhole.

The Forsyth, MT homeowners’ guide to foundation repairs

From average costs to expert advice, get all the answers you need to get your job done.

See all articles

Ginny Bartolone
•
Mar 17, 2026Mar 17, 2026
How Much Does Foundation Repair Cost? [2026 Data]
Foundation repair costs can be tricky when you have a large repair on your hands. This guide walks through costs from small cracks to total replacement.
Timothy Moore
•
Mar 17, 2026Mar 17, 2026
How Much Does Pier and Beam Foundation Repair Cost? [2026 Data]
Worried about pier and beam foundation repair costs? Get a better understanding of how to budget by learning about the repair methods available to you.
Kyle Schurman
•
Jul 10, 2026Jul 10, 2026
How Much Does Underpinning a Foundation Cost? [2026 Data]
Unstable or sinking foundations require comprehensive and expensive solutions. Learn about foundation underpinning costs in this guide to set your budget.
Em Norton
•
Apr 6, 2026Apr 6, 2026
Who to Call to Repair Foundation Issues
Foundation issues are critical, so knowing how to manage them is too. Use this guide to learn who to call for foundation repair.
Catherine Hiles
•
Apr 6, 2026Apr 6, 2026
5 Questions to Ask About Concrete Foundation Repair
Minor foundation issues should be repaired before they become a major problem. When hiring a pro, consider these concrete foundation repair questions.
Em Norton
•
Jul 9, 2026Jul 9, 2026
What to Know Before Buying a House That Had Previous Foundation Repair
A house’s history of foundation repairs doesn’t always mean you shouldn’t buy it. Learn what to consider when purchasing a house with an unstable past.