Basement Waterproofing Rates

6 Replies

I'm curious to hear what others are paying for basement waterproofing.

I was just quoted around $14k to have the exterior dug and waterproofed as well as put an interior drain system put in for about 126 linear feet of basement wall.

In the past I've been quoted roughly $100 foot per linear foot.

Please share if you have any experience or input on this.

As long as they're a reputable company that price looks about right for that work BUT doing both interior and exterior waterproofing is typically overkill. I would definitely get 1-2 more quotes and ask if they'd recommend interior or exterior for your area and foundation type.

I spoke to a couple of companies here in NYabkut a house with basement water issues. Interior perimeter drain, into a pump and then out, with all the work done and a lifetime warranty I was told to figure $11-12k for a 1056 SF basement.

I would get additional opinions and estimates to see if you really need to do all of this to waterproof your basement. A few years back we received a similar estimate for our rental property’s basement. Other companies were cheaper for the same work. We had multiple estimates.

Another company had other suggestions which we did instead and which were drastically cheaper and solved the problem. We decided to have all of our gutters replaced. We also had a plumber drill into our basement to install a second sub pump which was dug deeper than the sub pump that we already had. We have not had any problems since then with water in our basement. And we never installed the french drains.

Thanks for the feedback everyone.

@Blake Johnston I agree that it is probably overkill.  It was a typical high pressure sales scenario.  First guy came out to sell their "patented multistep system" and quoted me $22k.  I said no.  The "boss" came back and told me he can work with me and do $15k,  I said no.  He then got it all the way down to $14k (miraculous, I know).  In all realty neither of them mentioned anything about the source of the problem, they just kept talking about their "famous system"  I think I will be going elsewhere

@Amy Beth  I definitely agree with you and intend to get an estimate from as many people as it takes until I find someone I trust!  I'm going to have the gutter drains looked at before I make any decisions on the basement. Thanks for the input.

@James Maradits $100/sq ft is a good price to shoot for in our area.  But can also depend on access available (is your next neighbor right on top of you and can't get a machine in) + extent of the issue (is your storm line to the street OK).  

In most cases, basement water issues should be able to be resolved by exterior digging only - this should include new drain tiles and waterproofing the walls + backfill with #57 gravel or similar material.  To me, the interior systems are treating a symptom not solving the problem - you need to keep the water out of the house in the first place, not just get rid of it after it comes in.  You're right in running from anyone who isn't focused on the source of the problem.  And @Amy Beth is spot on, get a few opinions, especially good are those from someone who isn't going to bid on the digging like a plumber.  Its surprising how much trouble a bad gutter or minor grading issue can cause....a good plumber has experience with sump pumps and floor drains & can usually make a decent call on what the real issue is.

This is also the type of job where going with the lowest bidder can be dangerous.  There's a basement waterproofing guy on YouTube - Daniel J O'Connor - who has some great educational videos on the topic (they're also pretty entertaining) -it would be worth your time spending 30 minutes watching him.  If your property is on the west side, PM me and I can give you a couple names to try.  

Originally posted by @Don Petrasek :

@James Maradits $100/sq ft is a good price to shoot for in our area.  But can also depend on access available (is your next neighbor right on top of you and can't get a machine in) + extent of the issue (is your storm line to the street OK).  

In most cases, basement water issues should be able to be resolved by exterior digging only - this should include new drain tiles and waterproofing the walls + backfill with #57 gravel or similar material.  To me, the interior systems are treating a symptom not solving the problem - you need to keep the water out of the house in the first place, not just get rid of it after it comes in.  You're right in running from anyone who isn't focused on the source of the problem.  And @Amy Beth is spot on, get a few opinions, especially good are those from someone who isn't going to bid on the digging like a plumber.  Its surprising how much trouble a bad gutter or minor grading issue can cause....a good plumber has experience with sump pumps and floor drains & can usually make a decent call on what the real issue is.

This is also the type of job where going with the lowest bidder can be dangerous.  There's a basement waterproofing guy on YouTube - Daniel J O'Connor - who has some great educational videos on the topic (they're also pretty entertaining) -it would be worth your time spending 30 minutes watching him.  If your property is on the west side, PM me and I can give you a couple names to try.  

Thanks for the input, Don!  I agree that the exterior should be the only thing needed in most cases.

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