Expert Hardscaping in Federal Way, WA

Federal Way sits just across the county line from Tacoma, and most of our work there looks like our Pierce County work: suburban lots, aging concrete, and wet winters. The difference is on paper. Federal Way lists the King County Surface Water Design Manual and a City of Federal Way addendum as its stormwater design references, both tied to the 2021 edition. Elsewhere on our route, Tacoma uses its own Stormwater Management Manual, and cities such as Gig Harbor and Yelm work from the Department of Ecology's model.

For a homeowner, that means a contractor used to Pierce County thresholds should check the King County manual and the city addendum before telling you a project is too small to matter. We confirm the current requirements for the address before design.

ND Brick Pavers has 19 years and more than 425 completed projects, a 4.7 Google rating, and only in-house crews. Our office is in Yelm.

In a grid of points across Federal Way in USDA soil survey data, Alderwood gravelly sandy loam was the dominant map unit on 0 to 8 and 8 to 15 percent slopes. Everett and Alderwood mixed together showed up on some slopes, and areas mapped as Arents, Alderwood material, mark ground that was cut, filled, and regraded during development. One point landed on Seattle muck, a reminder that the low spots between hills can hold organic soil.

In the Alderwood profile, compact till starts somewhere between 20 and 40 inches below the lawn. Water moves through the topsoil, reaches the till, and spreads sideways. From December into April, USDA records water collecting above that layer, often within 1 to 3 feet of the surface. That is the season when patios built without drainage start to settle.

Arents, the graded fill ground, needs extra attention. Fill placed during a subdivision build may not be uniformly compacted. On those lots we probe deeper before setting base depth, because a soft spot under a driveway turns into a rut.

NOAA's 1991-2020 normals for a volunteer station just west of central Federal Way show 40.60 inches of precipitation a year, with about 15 inches from December through February. On Alderwood till, that rain does not drain away easily, so winter is when weak bases show themselves.

A sunken section in a paver driveway is usually fixable without a full rebuild, but only if the cause is found. We lift the pavers in the low area, remove the bedding layer, and dig into the base to see what failed: a soft pocket of fill, water perched on till, or a base that was too thin for vehicle loads.

The repair matches the cause. Soft fill is dug out and replaced with compacted base rock. Perched water gets a drain path to a legal outlet. A thin base gets rebuilt to vehicle depth across the affected area. Then the original pavers go back in, new joint sand is swept in, and the area is compacted. If the concrete approach at the street is also broken, that part is right-of-way work and is handled separately.

Federal Way's residential permit exemptions include retaining walls not over 4 feet tall, measured from the bottom of the footing to the top of the wall, unless the wall supports a surcharge. Sidewalks and driveways are listed as exempt, with a note that other code requirements may apply. Decks up to 200 square feet and no more than 30 inches above grade are also on the list.

Two limits apply to all of it. The city says any work in a critical area, including wetlands, streams, and landslide hazard areas, is not exempt. And exempt items may still need separate permits, such as a right-of-way permit for work at the street. We check critical area maps and the frontage before we design.

Requests in Federal Way tend to fall into these groups.

For Federal Way jobs we add a step to our usual visit: we confirm which stormwater manual and city addendum apply, and whether the lot touches a critical area. The soil test probes past the topsoil to tell native till from graded fill. The free 3D design and free quote follow, with costs tied to size, base depth, soil, access, materials, drainage, removing old concrete, slope, and permits. Our own crew handles it from tear-out to final compaction.

These help separate a careful bid from a fast one.