Newcastle is built into the side of Cougar Mountain, largely within the last few decades. That combination of steep ground and recent construction produces a specific and fairly consistent set of landscape problems.
Fill, not soil
Hillside subdivisions are built on engineered fill. What arrives on top of it as a finished garden is frequently a thin layer of imported topsoil over heavily compacted ground, planted to pass a final inspection.
The result shows up three to five years later: planting that has stalled, lawn that will not thicken, and water running across the surface because it cannot get into the ground. The fix is underneath. Decompaction, genuine soil amendment and regrading do far more here than replacing the plants that died.
Slopes that are somebody’s engineering
Many Newcastle slopes are engineered features with drainage designed into them, and they are not always ours to modify. Cutting into a graded slope, adding load at the top of one, or interrupting a buried drainage run can be a genuine structural question rather than a landscaping one.
We look at what a slope is doing before proposing anything on it, and where a project needs engineering or an HOA sign-off we will say so early rather than halfway through.
Terracing rather than one wall
Where walls are the answer, two shorter terraces usually beat one tall wall. They hold the same grade, frequently stay below the height that triggers engineering, cost less and leave planting space between levels. Every one gets drainage behind it, because saturated hillside soil is heavy and pushes hard.
Covenants and common ground
Most of the subdivisions here carry covenants governing planting, fencing and street-facing appearance, and many have HOA common areas. Common ground here is usually a renovation job for us rather than a standing plan: replanting tired shared beds, fixing drainage between buildings, and rebuilding walls that have started to move.
What we do here
Soil correction on newer properties, terracing and retaining walls, drainage, covenant-compliant front garden work, and cleanup and renovation work on private gardens and HOA grounds.
Our standing maintenance plans run in Seattle, Shoreline, Edmonds and Mountlake Terrace. Newcastle work is design, build and scheduled one-off jobs.