How to compare asphalt paving quotes correctly
A lower total is not necessarily a lower price for the same work. First align the paved area, final compacted thickness, number of lifts, mix, aggregate base, removal, grading, delivery and warranty. Only then compare totals or unit prices.
| Line to align | What to ask each contractor |
|---|
| Paved area | "What square footage did you measure?" — quotes measured differently are not comparable. |
| Compacted thickness | "What is the final compacted thickness, in inches?" — do not convert a loose placement depth with a universal ratio; ask the contractor for the stated finished thickness. |
| Tonnage | "How many tons of mix are you ordering for this area?" — the checker below converts it to an implied thickness. |
| Base work | "Is a new aggregate base included, and how thick?" — the base is the structural half of the job. |
| Removal | "Does this include tearing out and hauling away the existing surface?" |
| Delivery | "Is trucking included, and are there minimum-load or short-load fees?" |
| Overruns | "If the job needs more material than quoted, how is the extra priced?" — usually a percentage of the total; an unlimited overrun clause can erase a low bid. |
| Incidentals | "What is not included?" — permits, mobilization, and short-load surcharges are commonly excluded from the headline number. |
| Warranty & schedule | "What warranty do you give, and when can you schedule?" — compare only after the math lines up. |
What the reverse calculation means
If a quote states area and asphalt tons, this tool uses the selected planning density to calculate the thickness that those tons imply. A difference is a reason to ask a question—not proof that the quote is wrong. The quote may use a different area, density, allowance or course structure.
Example: two quotes cover the same 600 sq ft driveway. Quote A orders 10 tons; quote B orders 12 tons. At the standard 145 lb/ft³ planning density, A implies about 2.8 inches compacted while B implies about 3.3 inches. B states roughly 20% more material, but that alone does not make it the better project: confirm allowance, mix, lifts, base work, delivery and final compacted thickness.
Wording can hide the same difference. One contractor may state compacted thickness while another gives a loose placement depth. There is no universal conversion ratio for every mix and placement condition, so ask both contractors to state the final compacted thickness before comparing.
What still requires local verification
Actual construction quality depends on field measurements, soil, drainage, mix design, temperature, compaction and applicable local requirements. This checker does not inspect the job, determine legal compliance, or provide an engineering opinion.