Sylmar is the northernmost neighborhood of the City of Los Angeles, situated at the top of the San Fernando Valley where the I-210 and I-5 freeways converge. Most of the residential housing here dates from the 1950s through the 1980s - stucco-over-frame homes on concrete slab foundations that have been through the 1971 Sylmar earthquake and the 1994 Northridge earthquake. Those events did not just crack walls; they shifted slabs, opened driveways, and altered the soil compaction beneath paved surfaces across the neighborhood. Driveways that were repaired in a hurry after one of those events may have uneven base conditions underneath that cause surface cracks to reappear faster than expected.

The soils in Sylmar are a particular challenge for paved surfaces. Expansive clay soils common in the foothills and portions of the valley floor swell significantly when wet and shrink during the dry season, creating a cycle of movement beneath asphalt that no surface treatment can fully compensate for - only proper base preparation at installation can manage it. On top of the soil issue, Sylmar is in the path of Santa Ana wind events that carry abrasive particulate onto outdoor surfaces, and parts of the neighborhood near the foothills remain at elevated wildfire risk, as the 2008 Sayre Fire demonstrated. Contractors working in Sylmar need to understand how all of these conditions interact over the life of a paved surface, not just at the time of installation.

Sylmar is the northernmost neighborhood in the City of Los Angeles, sitting at the top of the San Fernando Valley where the foothills of the Santa Susana and San Gabriel mountains meet the valley floor. With roughly 75,000 to 85,000 residents, it is one of the larger San Fernando Valley neighborhoods by population. The housing stock is primarily single-family homes built between the 1950s and the 1980s on concrete slab foundations, with a mix of apartments and condos in the denser sections near the commercial corridors. Parts of the neighborhood near the foothills have larger lots, horse properties, and open land that give Sylmar a more semi-rural feel than most of Los Angeles. You can find more background on the community at the Sylmar, Los Angeles Wikipedia article.

The Cascades, the ornamental Los Angeles Aqueduct spillway near the neighborhood, is a recognized historic and cultural landmark. The Nethercutt Collection, a free museum in Sylmar known for its world-class collection of antique automobiles, draws visitors from across the region. Olive View-UCLA Medical Center is a major public hospital and one of the largest employers in the northern Valley. Sylmar borders Granada Hills to the west and is connected to the rest of the Los Angeles region and to Santa Clarita to the north via the I-5 and I-210 freeway interchange, making it an active corridor for contractors serving both sides of the valley.