"How many loads of fill?" is the question we get on almost every Citrus Springs pad quote, and the honest answer is: it depends on how low your lot sits, not just its size. Here's the actual math, plus why two lots on the same street can need very different amounts.
Fill volume is length × width × depth, all in feet, divided by 27 to convert cubic feet into cubic yards — the unit fill is bought and delivered by. For a standard 30×40 house pad built up 12 inches (1 foot), that's 30 × 40 × 1 ÷ 27 ≈ 44 cubic yards of loose fill before accounting for compaction.
Fill dirt sold by the yard sits at roughly 65–80% relative compaction when it's dumped. A pad has to be compacted to around 90% density before a builder's engineer will sign off on it — which means the loose yard you bought shrinks once it's properly compacted. The standard practice is to add a 1.20–1.25 compaction factor on top of the raw math, and most contractors order another 10–15% buffer beyond that for settling and waste. Run the numbers on that same 30×40, 12-inch pad and you land closer to 55–65 cubic yards delivered — noticeably more than the bare formula suggests, and exactly the gap that catches homeowners who priced fill off a calculator instead of a contractor's quote.
Most residential pads run 15–30 cubic yards on a lot that's already close to grade. The variable that actually moves the number in this market isn't pad size — it's starting elevation. Citrus Springs was platted decades ago across rolling, unevenly graded quarter-acre lots, and it is common for two lots two doors apart to differ by a foot or more in natural grade. A lot that sits low relative to the road or a neighboring pad can need 20 additional loads of fill compared to one that's already near pad height — which is exactly the swing we flagged as the single biggest quote-to-quote variance in our local cost guide. Nobody can give you an accurate fill number over the phone without knowing your lot's actual elevation; it's the first thing we measure on a site walk.
| Pad size | Fill depth | Loose fill (no compaction factor) | Typical delivered amount |
|---|---|---|---|
| 24×32 (small pad) | 6 in | ~12 cu yd | 15–18 cu yd |
| 30×40 (standard singlewide/small home footprint) | 12 in | ~44 cu yd | 55–65 cu yd |
| 40×60 (larger footprint) | 12 in | ~89 cu yd | 110–130 cu yd |
| Any pad, low lot | 18–24 in | 1.5–2x the 12-in figure | add 20+ loads vs. a level lot |
A load of fill dumped at the curb and a load of fill spread in lifts and compacted to spec are priced the same by some outfits and are not remotely the same product. We quote fill delivered and placed — spread in proper lifts, each compacted before the next goes down, built to the elevation your builder's site plan calls for. Full detail on how a compliant pad gets built: house pad construction.