
Water is the most common problem on home lots. It ponds by the foundation, runs into the crawlspace, or comes over from the neighbor's yard. Or the city wants a grading plan before you build.
We visit, see where the water comes from and where it goes, and design a fix: regrading so the ground slopes away, footing and curtain drains, downspouts to a drywell, or swales around the house. You get a simple plan your contractor can build from.
Many cities want a grading permit once you move enough dirt. The plan shows existing and new ground, cut and fill, slopes, small walls, and drainage. We build it from your survey, and tell you what to order if you don't have one.
We check driveway grades and where a short wall works better than a slope. Big walls and steep hillsides need a geotech engineer, and we work from their report. A neighbor's water coming onto your lot? We can document it; see Forensic.
Call (253) 319-3220 or use Contact Us. Send your plans or photos. Defined work gets a clear fixed price; code and open-ended work starts with a short hourly agreement.
Dow Engineering PLLC
16202 64th St E Ste 117, Sumner, WA 98390
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