The steps to a front door are climbed more times than any other concrete on the lot, and by the same people for as long as they live there. On a Torrance tract that is often decades. A flight that was fine at 40 is a fall waiting at 75 if one riser has settled taller than the rest, so the steps we pour hold every riser to 7 inches, give each tread 11 inches of foot, land level at the sill and carry a rail sleeve whether a rail is fitted now or later.
The flights that came with the 1950s houses were a box of forms filled with broken block and rubble, capped with 2 inches of concrete and set on the same dirt as the walk. Nothing tied them to the house. The box settled away from the sill, the cap cracked over the rubble and the bottom riser sank into the path, which is why so many front steps here are taller at the top than at the bottom. Kenji Okamoto measures each riser with a tape before he prices the flight.
A new flight is poured solid, on a footing dug below the walk, and pinned to the foundation with steel dowels epoxied into the stem wall, so the steps and the house move as one. The rise, the tread, the landing and the rail follow the California Residential Code, under a CSLB C-8 license with liability insurance on every job. Every flight carries a written workmanship guarantee against defects in how it was built, with the riser heights on the estimate.