If you bought new in Celina, Prosper, or north Frisco and your yard holds water after every storm, you are in large company. It is one of the most common calls we take, and it is not because you did anything wrong.
New lots flood for three specific reasons, all of them created during construction. The good news is that all three are fixable, and fixing them early is far cheaper than dealing with what they cause later.
Reason one: the clay was compacted by machines
Heavy equipment runs over a lot for months during construction. Clay that was already dense gets pressed into something close to pavement, and whatever small ability it had to absorb water is gone.
That is why a brand new yard can drain worse than a fifty year old one down the road. The old lot has had decades of root growth and freeze cycles loosening it. Yours has had a bulldozer parked on it.
Reason two: the grading was done for the lot, not your yard
Builder grading is designed to satisfy a drainage plan for the subdivision and to move water off the slab. It is not designed to make your backyard usable.
The result is a lot that technically drains, in the sense that water eventually leaves, while sitting in a low spot for three days on its way out. Nothing about that violates the plan. It just makes the yard unusable.
Reason three: downspouts dumping right at the foundation
Most new homes discharge roof water a few feet from the slab. A single inch of rain on a typical roof is thousands of gallons, and all of it lands in the same few square feet.
This is the cheapest of the three to fix and the most damaging to ignore, because it is the one that puts water directly against your foundation.
What actually fixes it
In the order we would usually do them on a new build.
- Buried downspout extensions carrying roof water well away from the slab, typically $800 to $2,500
- Regrading, and shallow channels where needed, to give water a route out instead of a place to sit, $4,000 to $15,000
- French drains where the ground stays saturated without visible pooling, $3,500 to $9,000
- Surface drains in the specific low spots that pond, $1,500 to $4,500
- A dry creek bed where volume is high, which handles the water and reads as a designed feature
Why fixing it early matters
Foundation repair in DFW commonly runs $8,000 to $30,000 and higher. Drainage work costs a fraction of that and addresses the cause rather than the symptom.
There is also a sequencing argument. Doing drainage before you install beds, sod, and hardscape is dramatically cheaper than tearing finished landscaping out to get at it two years later. If you are new in the house and planning a yard, drainage comes first.
Key takeaways
- New lots flood because construction equipment compacts the clay to near-pavement density
- Builder grading satisfies the subdivision plan, not the usability of your yard
- Downspouts discharging at the slab are the cheapest problem to fix and the worst to ignore
- Drainage costs a fraction of foundation repair and addresses the cause
- Do drainage before beds and hardscape, not after
Considering drainage solutions for your yard?
French drains, area drains & grading that move water away from your home.
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