The cost to install a drainage system, whether that be a standard yard drain or a more complex french drain system, can be pretty high. Even at the low end, a basic system generally starts at around $3,000 – and this is for a small property. It gets more expensive from there, especially if you need something more involved like a french drain, your yard is big, or you have no slope and need to install a sump pump. For a comprehensive and proactive drainage solution that addresses both surface and subsurface water issues, we see systems regularly run up to $10,000 and sometimes even more. However, expensive as that may be, this is not the complete picture of what it can cost to fix a drainage problem – let’s take a look…
When you have poor drainage at your house, there’s a myriad of problems that can occur. Poor drainage affects your home’s foundation, and if the foundation is off, you can soon find that a lot of other things are too. Hydrostatic pressure caused by standing water and saturated soil can cause a foundation to heave and sink, going up and down with the changing seasons. When this happens, you see things like cracks in the drywall, damage to flooring and separation between mortar joints. While these are unattractive and can be expensive to repair, there are worse (and far more costly) things that can happen, such as separation of a sewer line. When a house lifts or heaves, it will take the plumbing with it, potentially causing a break in one or more of the lines, such as the main sewer drain. Repairing this can be excruciating, easily costing $10,000, $20,000 or more… Of course, without the drainage issues fixed, this same problem could happen again, putting you back in the position of needing to make further repairs. We haven’t even mentioned fixing the foundation itself. Foundation repair work can quickly run upwards of $10,000 as well, leaving your total potential out of pocket expense in the tens of thousands of dollars…
While less costly financially, the aesthetic problems caused by improper drainage are an issue as well. It can be frustrating and concerning to feel unevenness when you walk across the floor or to see cracks appear in the sheetrock. Imagine working to create a beautiful living space, only to have a gaping eight foot crack looming over your seating area. Besides the actual expense of repairing this every year, the headache of dealing with that has its own cost as well. Improper drainage can also effect your outdoor spaces. How about the side yard that’s always muddy and is basically unusable? While this soggy yard is probably the source of your foundation woes, it is most certainly a frustration of its own. Having to avoid parts of your yard all the time is an annoyance and a waste, but it doesn’t have to be this way. By dealing with the poor drainage, you can not only prevent damage to the home, you can also take back your yard to enjoy and use.
When it comes to home ownership, the key to fewer headaches and reducing costs is to be proactive. Having proper drainage at your property to address the problem areas is the way to do this. You don’t necessarily need drainage everywhere – quite often it is one side of the house that is the issue. Grade and slope play crucial roles in determining where the water flows, and if your home is in the path of that flow, it becomes the problem. What a proper drainage system does is divert the water around your home, so it doesn’t have a chance to work against things like the foundation. Remember, water is very powerful (think Grand Canyon) and will work against standing structures if not managed correctly.
So when it comes to the true cost of drainage, consider all the other parts of a home that improper drainage can negatively impact: cosmetic features such as drywall, critical functions such as plumbing, and structural components like the foundation (not to mention the emotional toll of the frustration that comes with any of these things failing.) From a big picture perspective, the cost of not fixing bad drainage will likely be more than fixing it correctly in the beginning. The important thing here is that the drainage is addressed correctly. We dig up a lot of old drainage during the course of our projects, and often find the existing system to have been installed incorrectly. It is a nuanced field that requires a certain understanding of the physical property of water – how it behaves both above and below ground. You’d be surprised by the bizarre things we see buried underground – things that are constructed with drainage components, but that don’t actually drain anything. So this would be the final piece of advice – if you’re going to be the most cost-conscious you can be, don’t just address the drainage first, address it correctly, so you don’t have to come back and do it again.