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plan your investment
How Much Does Waterproofing a Basement Cost in Southeast Michigan?
Most basement waterproofing systems in Southeast Michigan cost between $8,500 and $19,000. The biggest factor is the size of the basement, but the amount of water, drainage needed, sump pump setup and repairs can also affect the final price. Before any work begins, we explain why your basement is leaking, what we recommend, what the system will look like and what the project will cost.
protect your home
Why Waterproofing Your Basement Is Worth the Investment
Waterproofing is about more than stopping water after a storm. A properly designed system helps protect the space, control moisture and give you more confidence in how you use your basement. The value comes from understanding why water is getting in and installing the right system to manage it long term.
Schedule Free Inspection Visit Our Learning Center
A Basement You Can Actually Use
A dry basement gives you more options. Store belongings with confidence, create space for hobbies or exercise or simply use the square footage you already have without worrying about dampness, odors or recurring water.
A Drier, More Comfortable Home
Moisture and musty odors in the basement can affect more than the space below. Controlling basement moisture can help create a drier, more comfortable environment throughout your home.
Protect the Investment in Your Home
Recurring basement water can become an issue you eventually have to address, especially when it is time to sell. Fixing the problem now lets you protect the space and enjoy the benefits while you still live there.
Start With a Dry Basement
If you plan to finish your basement, water problems should be addressed first. Waterproofing before finishing helps protect the investment you are about to make in the space.
what affects price
What Makes Basement Waterproofing Costs Go Up or Down
No two basements need exactly the same waterproofing system. Some costs are determined by the size and condition of your basement, while others depend on the system and options you choose. Understanding what affects the price helps you know why one project may cost more or less than another.
Factors That Can Increase Basement Waterproofing Costs
Basements size & Linear Footage
Larger basements typically require more drainage, materials and labor, making the size and linear footage of the basement one of the biggest factors in cost.
Structural Repairs Are Needed
If we find foundation cracks, bowing walls or other structural concerns that need to be addressed along with the water problem, those repairs will add to the overall project cost.
Limited Access or Obstructions
Stairs, water heaters, HVAC equipment or other obstructions can make parts of the basement harder to access. If something needs to be moved or worked around to install the system properly, additional labor may be required.
Additional Electrical Outlet
Sump pumps, battery backups and other equipment require proper power. If the existing electrical setup cannot support the system, additional electrical work may be needed.
A Longer Discharge Line
The discharge line needs to move water a safe distance away from the foundation. A longer or more complicated discharge route requires additional materials and labor.
Removing & Repairing Finished Walls
If finished walls or other materials are in the way of the waterproofing system, they may need to be removed and rebuilt after installation.
Factors That Can Decrease Basement Waterproofing Costs
Choosing a Partial System
A partial waterproofing system costs less because it treats only part of the basement. The tradeoff is that water may eventually enter somewhere else, so it is not the same long-term solution as waterproofing the full perimeter.
Your Existing Sump System Can Be Used
If your existing sump pump or sump system is in good condition and appropriate for the waterproofing system, it may not need to be replaced.
Catching the Problem Early
The sooner basement water is addressed, the less chance it has to damage finished walls, flooring, furniture, keepsakes and stored belongings. That can mean less cleanup, demolition and restoration added to the cost.
A Smaller Basement or Less Linear Footage
A smaller perimeter usually requires less drainage, material and installation time, which can lower the overall system cost.
SEE WHAT’S INCLUDED
What Does a Basement Waterproofing System Include?
The starting prices below are based on basement waterproofing projects completed by Basements Plus during the past 12 months and reflect pricing updated in October 2026. Each example assumes approximately 100 linear feet and shows how drainage, wall protection, sump protection, humidity control and monitoring affect the total investment.
Waterproofing System
Waterproofing + Backup System
Complete Water Management
Description
Full-perimeter drainage designed to collect groundwater & direct it to your existing sump system.
Adds wall protection plus an upgraded sump system with battery backup for additional protection during heavy water volume or power outages.
Adds our TripleSafe® sump system, whole-basement dehumidification & monitoring for a more comprehensive approach to water and moisture control.
Price
Starting at $8,500
Starting at $14,000
Starting at $19,000
Permits & Required Inspections
Debris Removal
Home Protection During Installation
Floor coverings and dust barriers during work
Full-Perimeter WaterGuard® Drainage
Channels water away from your foundation before it reaches your floor
VaporSeal™ Wall Protection
Keeps moisture from seeping through your foundation walls
Sump Pump + Battery Backup
TripleSafe® Sump Pump System
Includes 2 pumps AND a battery back up
SaniDry™ Sedona Dehumidifier
Whole basement dehumidifier
System Monitoring
Tracks system performance/data
Transferable Lifetime Warranty
Available on qualifying full-perimeter waterproofing systems. Additional terms apply.
Waterproofing System
Waterproofing + Backup System
Complete Water Management
Description
Full-perimeter drainage designed to collect groundwater & direct it to your existing sump system.
Price
Starting at $8,500
Permits & Required Inspections
Debris Removal
Home Protection During Installation
Floor coverings and dust barriers during work
Full-Perimeter WaterGuard® Drainage
Channels water away from your foundation before it reaches your floor
VaporSeal™ Wall Protection
Keeps moisture from seeping through your foundation walls
Sump Pump + Battery Backup
TripleSafe® Sump Pump System
Includes 2 pumps AND a battery back up
SaniDry™ Sedona Dehumidifier
Whole basement dehumidifier
System Monitoring
Tracks system performance/data
Transferable Lifetime Warranty
Available on qualifying full-perimeter waterproofing systems. Additional terms apply.
Description
Adds wall protection plus an upgraded sump system with battery backup for additional protection during heavy water volume or power outages.
Price
Starting at $14,000
Permits & Required Inspections
Debris Removal
Home Protection During Installation
Floor coverings and dust barriers during work
Full-Perimeter WaterGuard® Drainage
Channels water away from your foundation before it reaches your floor
VaporSeal™ Wall Protection
Keeps moisture from seeping through your foundation walls
Sump Pump + Battery Backup
TripleSafe® Sump Pump System
Includes 2 pumps AND a battery back up
SaniDry™ Sedona Dehumidifier
Whole basement dehumidifier
System Monitoring
Tracks system performance/data
Transferable Lifetime Warranty
Available on qualifying full-perimeter waterproofing systems. Additional terms apply.
Description
Adds our TripleSafe® sump system, whole-basement dehumidification & monitoring for a more comprehensive approach to water and moisture control.
Price
Starting at $19,000
Permits & Required Inspections
Debris Removal
Home Protection During Installation
Floor coverings and dust barriers during work
Full-Perimeter WaterGuard® Drainage
Channels water away from your foundation before it reaches your floor
VaporSeal™ Wall Protection
Keeps moisture from seeping through your foundation walls
Sump Pump + Battery Backup
TripleSafe® Sump Pump System
Includes 2 pumps AND a battery back up
SaniDry™ Sedona Dehumidifier
Whole basement dehumidifier
System Monitoring
Tracks system performance/data
Transferable Lifetime Warranty
Available on qualifying full-perimeter waterproofing systems. Additional terms apply.
These examples are intended for planning purposes. Your actual investment will depend on the required linear footage, existing basement conditions, system components, access, and restoration needs. Your in-home inspection will determine the appropriate system for your basement.
before you commit
What to Look for When Comparing Basement Waterproofing Quotes
A waterproofing quote can look lower simply because less is included. The real question is not just what the number is, but what that number covers from start to finish.
Before you compare bids, make sure you understand the full scope of work, who is responsible for the related trades and what happens if additional work is needed. A lower upfront price can become more expensive once missing pieces are added back in.
At Basements Plus, we spell out the scope before work begins so you know what is included, who is handling it and what the project is expected to cost.
compare what's included
Why Are Some Basement Waterproofing Quotes So Much Lower?
A lower quote often means the contractor is pricing only the waterproofing system itself, while other work is left for the homeowner to arrange and pay for separately.
When you compare quotes, look beyond the bottom-line number. Ask what is included in writing, who handles the related work and what you will still be responsible for after the waterproofing crew leaves.
Demolition of Finished Walls.
If finished walls block access to the waterproofing area, part of the wall may need to be removed before installation can begin. If demolition is not included in the quote, you may have to arrange it separately.
Drywall Repair
Once the waterproofing system is installed, removed drywall or other finished materials may need to be rebuilt. A lower quote may stop at the waterproofing and leave the restoration work to you.
Moving Water Heaters or Other Obstructions
Water heaters and other equipment can block access to the work area. If something needs to be temporarily moved, a licensed trade may be required, adding another contractor and another cost if it is not included.
Electrical Work for Sump Pumps & Equipment
New sump pumps, battery backups or dehumidifiers may require additional electrical work. If the existing power setup cannot support the equipment, that work can add to the final project cost.
Permits & Inspections
If permits or inspections are required, make sure you know who is responsible for obtaining them, paying the fees and coordinating the inspection.
Warranty & Long-Term Service
A lower price can also come with less warranty coverage or less support after installation. Compare what is covered, how long it is covered and who you will call if you need service later.
compare warranties
What Does the Warranty Behind the Quote Actually Cover?
Warranty coverage is another reason two waterproofing quotes can look very different. Before choosing a contractor, compare how long the system is covered, whether the warranty transfers to a future homeowner and who you call if the system needs service later.
What To Compare
Questions To Ask
Basements Plus
Warranty Length
How long is the qualifying waterproofing system covered?
Transferable Lifetime Warranty
Transferability
Does coverage stay with the home if you sell?
Yes, on qualifying systems
Service After Installation
Who handles warranty concerns or future service?
Basements Plus service team
Coverage Details
What parts of the waterproofing system are included?
Clearly documented in your warranty
Platinum Guarantee
Is finished basement restoration covered if qualifying water intrusion returns?
Available on qualifying projects
Questions To Ask
Basements Plus
Warranty Length
How long is the qualifying waterproofing system covered?
Transferability
Does coverage stay with the home if you sell?
Service After Installation
Who handles warranty concerns or future service?
Coverage Details
What parts of the waterproofing system are included?
Platinum Guarantee
Is finished basement restoration covered if qualifying water intrusion returns?
Warranty Length
Transferable Lifetime Warranty
Transferability
Yes, on qualifying systems
Service After Installation
Basements Plus service team
Coverage Details
Clearly documented in your warranty
Platinum Guarantee
Available on qualifying projects
*On qualifying waterproofing, crawl space, and foundation repairs.
Note: "Other contractors" descriptions reflect common industry patterns, not any specific named competitor. Platinum guarantee available on qualifying projects, additional requirements and exclusions may apply.
testimonials
What Our Customer Say About Basement Waterproofing
★★★★★
We got 5 quotes, chose them!
"Honesty and integrity are significant attributes that this team possesses... Among the five companies that assessed my property and provided free estimates, we selected Basement Plus, and we are extremely pleased with our choice!"
Nov, 2025
Nicole D.
★★★★★
The quality is worth paying for!
"People have great attitudes and do excellent work. Scheduling is tight and communicated well. The quality is worth paying for."
June 2025
Timothy W.
★★★★★
Rachael made getting quotes actually enjoyable!
"I love this place. I was dreading having worked on my house called a few different companies. For estimates, these guys came through and were friendly from the beginning. And Rachael is absolutely amazing. She made everything painless and dare I say a little fun! Thank you so much!"
April, 2026
Andrew G.
★★★★★
Quoted me a reasonable price!
"Kyle came out, took a look, called the City of Novi for input, and quoted me an extremely reasonable price to route the discharge to a drainage ditch along our road. The quote was less than half that of another waterproofing company I called."
August, 2023
Renee C.
★★★★★
On time, polite, efficient, done right!
"My basement waterproofing is done. AJ and his crew were on time, polite, efficient, got the job finished in 2 days as promised... you deserve 6 stars."
September, 2025
Winnie S.
★★★★★
Basement now dry, worth every penny!
"My basement was holding water all the way around before they came out and now it's as dry as it could ever be. I couldn't recommend this company more! Definitely worth every penny."
August, 2021
Danielle W.
ANSWERS
Basement Waterproofing FAQs
Frequently asked questions about basement waterproofing, costs, timelines, design, permits, and what to expect during your project.
Why can't I get a price over the phone?
Every basement has a different layout, conditions and list of features/solutions. We can provide a typical price range, but an exact quote requires seeing the space and understanding what you want to include. An in-home consultation gives you a clear scope and realistic price before work begins, reducing surprises and unnecessary change orders later.
How much does waterproofing a basement cost?
Based on the waterproofing projects we completed over the past year and our current pricing, most full-perimeter interior drainage systems cost between $8,500 and $19,000.
The final cost depends on the size of the basement, the amount of demolition required, the drainage and sump pump system selected and whether wall restoration or other repairs are needed.
Our free 21-Point Inspection identifies where the water is coming from and gives you a written solution based on your basement—not a generic estimate.
Will I have to tear out my finished basement to waterproof it?
Yes. If your basement has finished walls, we need to remove the lower three feet of drywall to install the interior waterproofing system. Basements Plus also offers wall restoration services, so you won't have to hire another contractor to put your basement back together.
Can I waterproof just part of my basement?
Yes. We install partial waterproofing systems when water is entering through one to three basement walls. However, for long-term protection, we typically recommend a full-perimeter system. Water follows the path of least resistance and may eventually enter through another wall. Over the years, we've returned to homes to extend partial systems after water found a new entry point.
Does Basements Plus offer financing?
Yes. We offer several financing options for qualified homeowners who prefer to spread the cost of their basement project over time.
During your consultation, your specialist can explain the available options and help you determine whether financing makes sense for your project. Financing terms and approval are determined by the lender. Learn More On Financing
let’s talk about your space
Get a Real Number for Your Basement Waterproofing
You’ve seen the typical price range and what can make one project cost more or less. The next step is finding out what your basement actually needs.
We’ll inspect the basement, explain why water is getting in and walk you through the recommended solution. In most cases, you’ll receive a detailed quote during the appointment, so you understand the scope and cost before making a decision.