National City's residential neighborhoods are densely developed and the housing stock is older than most cities in San Diego County. Driveways and sidewalks from the 1950s through 1970s are common — many have been patched multiple times and are past the point where additional patching makes economic sense. When we assess older slabs in National City, the determining factor is whether sections have shifted vertically relative to each other. Vertical displacement signals base failure, which means replacement is the right call. Surface wear and cosmetic cracking without structural movement is a candidate for resurfacing.

National City's proximity to the bay means coastal humidity is a factor for concrete longevity, particularly in the western portions of the city closer to the water. Unsealed concrete in this environment absorbs moisture that accelerates surface degradation over time. We seal every project before completion — it's standard practice here given the proximity to the bay.

Driveway replacement in National City often involves tight property access compared to more spread-out suburban neighborhoods. We account for site constraints during the walkthrough and plan the demolition, haul-away, and pour sequence accordingly.