Retaining walls in McCandless

The ground in McCandless

McCandless sits on rolling North Hills upland at the headwaters of Pine Creek, with plan developments stepping down ravine sides between the McKnight Road and Perry Highway corridors. Slopes are gentler than the river-valley towns but the same clay soils and spring lines apply, and walls holding walk-out basements and driveway cuts are common in the ravine-edge plans.

The bedrock story is the same across the metro: weak red-bed claystone that loses strength when wet, under a slow-creeping blanket of colluvium. Walls doing real structural work are a common sight around Ingomar, the McKnight Road corridor, the Perry Highway corridor and the North Park edge. The landslide guide explains why that combination deserves respect.

Permit rules in McCandless

McCandless enforces the statewide baseline below. A specific municipal threshold for this municipality is not published in a form this site has verified, so treat the baseline as the floor, not the whole answer.

Confirm the exact local permit threshold with the McCandless building department before starting work. The metro-wide picture lives in the Allegheny County permit guide.

Wall age in McCandless

McCandless is largely postwar and later construction, with major growth from the 1950s through the 1980s. Across Allegheny County the median home build year is 1957 (US Census ACS 2020 to 2024 five-year estimates).

Walls age like the houses they came with. If a wall here is leaning, bulging, or shedding material, the failing wall page covers what an assessment looks for, and the hillside page covers slopes that are moving with or without a wall.