Enter a realistic size
Use the measurement or task count that most closely matches the work contractors will price.
Exterior cost planner
Concrete Slab or Patio Cost Calculator
Plan a basic slab, patio, or similar flatwork project. Adjust the project, market, finish, and complexity to build a useful early budget.
Planning dataUpdated July 2026US national ranges
01
Describe the project
Use approximate measurements for early planning. You can print a revised estimate later.
What this estimate assumes
- Demolition, pumping, drainage, and difficult access may be extra.
- Structural foundations require engineered project pricing.
Planning guide
Understand the range before you request quotes.
Plan a concrete slab or patio by square footage, finish level, site complexity, access, and contingency.
Example project400 sq ftDefault calculator starting point
Base unit range$8–$22Before market, finish, complexity, and contingency
Example planning range$3,520–$9,680US average, standard finish, typical complexity, 10% contingency
How to use the calculator
Turn a rough idea into a quote-ready starting point.
This is a planning tool, not a contractor bid. Use the range to define scope, compare like-for-like proposals, and identify the questions that could materially change the final price.
Adjust the project conditions
Choose the local cost level, finish, complexity, and contingency that reflect your actual plan.
Compare complete scopes
Enter contractor quotes and check whether each proposal includes the same materials, labor, permits, and cleanup.
What the planning range includes
- Typical base preparation and concrete
- Standard forming and placement labor
- Basic broom or comparable finish
- Permit allowance and planning contingency
What can move the price
- Thickness, reinforcement, and concrete specification
- Excavation and base preparation
- Access for trucks or pumping
- Decorative finish and edge complexity
Items that often sit outside the first estimate
- Demolition and haul-away
- Drainage and grading corrections
- Engineered foundations or structural slabs
Common questions
Concrete Slab or Patio cost calculator FAQ
How accurate is this estimate?
It is an early planning range based on project size and broad US cost factors. Actual quotes depend on local labor, exact specifications, access, existing conditions, permits, and contractor availability.
Why is the range wide?
The low and high values intentionally cover meaningful differences in finish quality, complexity, market pricing, and hidden scope. Narrow it by defining materials and included work before requesting bids.
How should I compare contractor quotes?
Compare written scope, quantities, product allowances, demolition, cleanup, permits, schedule, warranty, payment terms, and change-order rules—not only the total price.
Continue planning
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