Footings and foundations for ADUs, additions, and new construction across Los Angeles County. We excavate with our own equipment, set the steel to plan, pass inspection, and pour.
Quality Grading & Paving is a licensed foundation and concrete contractor in Los Angeles County since 1993 (CSLB #643034, A, B, C-12, C-21, C-36). We build footings and foundations for ADUs, additions, and new construction: excavation with our own equipment, rebar and anchor bolts to the approved structural plans, city inspection, and the pour. We work for property owners and as the foundation subcontractor for ADU builders and general contractors.
The foundation is the one part of a building you can't fix later. We dig it, reinforce it, and pour it exactly as the engineer drew it.
Footings and slab foundations for detached ADUs and garage conversions that need new footings.
New footings tied into the existing house per the structural plans.
Continuous and spread footings, grade beams, and slabs for homes and small commercial buildings.
Slabs placed on a graded, compacted pad, with the vapor barrier and reinforcement the plans call for.
Reinforced pads and footings for equipment, enclosures, and site structures.
Pad grading and compaction before the foundation, under our C-12 and C-21 licenses.
On many ADU jobs, one company digs, another sets steel, and a third pours. Every hand-off is a chance for a delay or a mistake the inspector catches. We do the excavation, steel, and concrete ourselves, so the schedule and the responsibility stay with one company.
We work as the foundation subcontractor for ADU builders and general contractors, with insurance certificates on request and written bids per project.
Send Us Your Plans →Every foundation is different, so we price from your plans: linear feet of footing, depth and width, steel, concrete volume, excavation and haul-off, access, and inspection scheduling. Send the plans and we'll return a written bid.
Free site visit and a written, itemized estimate within 2–3 business days.
Based in nearby Carson. Fast site visits, written estimates within 2–3 business days, and a direct line to our project team.