Chelsea keeps a ring of small lakes around it — Cavanaugh, North, Sugarloaf — and the lawns that run down toward them are half yard, half shoreline. D-4 Services LLC mows, trims and edges straight through that green season, with cleanups in spring and fall to clear what the oaks let go. Lakeside grass grows thick and uneven, and bringing it to one level makes the whole slope read as a single piece. On a July morning with the water flat and the light coming sideways through the trees, a freshly cut yard is a genuinely pretty thing. A view like that is worth doing the work well for.