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Budget-level cost estimator · For specifiers & owners

Permeable pavement cost calculator

Plug in your project dimensions and conditions to get a line-item budget estimate for Flexus permeable pavement. Suitable for early project scoping, capital improvement planning, and bid evaluation. Not a substitute for a formal bid.

01 — Project dimensions
For non-rectangular projects, use total surface area divided by an average width.
02 — Flexus series
CP for municipal, parks, and public works. AP for design-led campuses, gardens, and civic projects.
03 — Lift thickness
2.0″ is the most commonly specified lift for primary public pedestrian routes.
04 — Subbase
Default 4″ on Class II woven geotextile fabric. Deeper subbase for higher stormwater storage or low-infiltration subgrade.
05 — Site conditions
06 — Mobilization
$2,500
Mobilization includes crew transport, lodging, and per diem for nationwide travel.
Budget estimate
Total installed cost (±15%)
$0$0 – $0
0 sf · $0.00/sf average
  • Earthwork
    Excavation + haul-off
    $0
  • Geotextile fabric
    Class II woven
    $0
  • Gravel grid
    Geocell — high-use
    $0
  • Stone subbase
    #57, 4″
    $0
  • Flexus material + install
    CP, 2.0″ lift
    $0
  • Edge restraint
    Perimeter
    $0
  • Mobilization
    Crew, lodging, per diem
    $0
  • Subtotal $0

Budget-level estimate only. Not a bid. Final pricing requires a project-specific scope review including drawings, geotechnical conditions, access, and schedule. Component costs reflect typical Southeast pricing and may vary by region. Range of ±15% reflects normal estimating variance at the early planning stage.

When to use this tool

Early planning
Confirming a project is in budget range before committing to drawings or scoping. Useful for parks departments, capital improvement committees, and design phases pre-RFQ.
Comparing alternatives
Cost-engineering review against gravel, asphalt, or concrete. Flexus typically costs more per square foot but eliminates separate stormwater infrastructure on permeable-required projects.
When not to use it
Do not use this estimate as a bid number. Final pricing depends on geotechnical conditions, site access, drainage design, and schedule — none of which this calculator can model.