Heavy-Duty RV Pad & Concrete Slab Cost in Phoenix, AZ (2026)

"Had three local contractors quote me between $8,800 and $11,500. Used this tool to calculate that the ready-mix was 9.8 yards (~$1,600 material). Used the printout to negotiate with the mid-tier bidder down to $8,200 turnkey with #4 rebar grid included."

"The ashlar slate stamped finish adder ($6.50/sq.ft) matched the exact quotes we got from two crews in Orange County. We requested quotes through the dispatch button and hired a certified flatwork crew who finished in 2 days. Looks like a resort backyard!"

"I needed a reinforced 6-inch pad for a 38-foot Class A motorhome (over 28,000 lbs). The calculator correctly recommended 6" thickness and sub-base compaction. The volume calculation matched the concrete delivery invoice down to 0.2 yards. Outstanding accuracy."

"Our old asphalt driveway was crumbling. The demo & haul-away calculation option ($2.75/sq.ft) gave me a clear expectation of disposal costs before calling contractors. The bids came in right around the tool's estimate of $7,600. Great transparency."

"The 80lb bag counter is a genius feature for DIYers. Told me 107 bags with 10% waste. We rented a portable mixer from Home Depot and poured it over a weekend. The DIY material savings showed exactly what we saved compared to paying full contractor labor."

"In Colorado you have to account for deep frost lines and air-entrained mix. The regional price multiplier for Denver was right in line with current Front Range ready-mix dispatchers. Very well-researched pricing model."