Early on a Northvale morning the low ground holds its fog until the sun clears the ridge, and Paris Avenue is moving while the grass is still wet. Estrada landscaping and construction gets going in that hour — mowing on a weekly turn, trimming the corners a mower cannot reach, edging where lawn runs up against the walk. Northern Valley yards sit in shade a good part of the day and answer well to a consistent cut. Spring cleanup clears out what the winter left; autumn cleanup takes the leaves off before they mat down over the turf. A tidy front lawn is a modest thing, and it changes the way a whole street reads.