DIY vs Contractor Concrete Cost: Real Numbers by Project Type
DIY concrete saves 40–65% on every project type — but the dollar amount and the risk level are not the same across the board. A 10×10 shed pad saves $275–500 with minimal risk. A full driveway saves $2,890–6,090 but is expert territory where a botched pour costs more than the savings. Know your project size before deciding. This guide gives real DIY and contractor costs side-by-side for every common residential concrete project, with honest risk assessments.
Use the concrete slab calculator to find exact material quantities for your project, then use the numbers below to model your DIY vs contractor cost comparison. For a broader discussion of the decision factors beyond cost, see the DIY vs contractor guide.
Quick Reference: DIY vs Contractor by Project
| Project | Contractor Cost | DIY Cost | Savings | DIY Difficulty |
|---|---|---|---|---|
| Shed pad (10×10) | $600–1,000 | $325–500 | $275–500 | Beginner |
| Backyard patio (12×16) | $1,000–1,700 | $460–745 | $540–955 | Beginner |
| Driveway approach (12×20) | $1,400–2,200 | $610–900 | $790–1,300 | Intermediate |
| Garage floor (20×20) | $2,000–3,200 | $720–1,140 | $860–2,060 | Intermediate |
| Full driveway (20×40) | $4,800–8,000 | $1,300–1,910 | $2,890–6,090 | Expert only |
Enter your dimensions to find concrete volume, then use the tables below to compare DIY material cost against contractor pricing.
Includes 10% waste factor
That's typically a professional pour. See costs ↓
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Project 1: Shed Pad / Small Patio (10×10 ft, 4" thick)
Specs: 100 sq ft, 0.62 cubic yards of concrete.
| Cost Component | DIY | Contractor |
|---|---|---|
| Concrete (bagged, ~28 bags 80 lb) | $175–250 | — |
| Ready-mix (if available) | $350–500 min. | $130–170 delivered |
| Lumber for forms (2×4s) | $30–50 | Included |
| Rebar or mesh (optional) | $40–80 | Included |
| Tool rental (mixer, float, edger) | $80–120 | — |
| Contractor labor | — | $400–700 |
| Total estimate | $325–500 | $600–1,000 |
DIY savings: $275–500 (40–55%)
This is the ideal first-time DIY project. Bagged concrete, manageable volume, no access challenges. You can carry all materials in a pickup truck. Time required: 4–6 hours with one helper. For tool details and what to rent, see the concrete tools buy vs rent guide.
Project 2: Backyard Patio (12×16 ft, 4" thick)
Specs: 192 sq ft, 0.99 cubic yards of concrete.
| Cost Component | DIY | Contractor |
|---|---|---|
| Concrete (bagged, ~45 bags 80 lb) | $270–405 | — |
| Ready-mix (alt. option) | $350–500 min. | $155–200 delivered |
| Lumber for forms | $40–70 | Included |
| Rebar or mesh | $60–120 | Included |
| Tool rental (mixer, bull float, edger) | $90–150 | — |
| Concrete delivery (if ready-mix) | $50–100 | Included |
| Contractor labor | — | $700–1,200 |
| Total estimate (bagged) | $460–745 | $1,000–1,700 |
DIY savings: $540–955 (50–60%)
At this size, consider ready-mix if your local plant's short-load fees don't push total cost above bagged. You're right at the crossover point — see the bagged vs ready-mix cost comparison for the decision logic. Time: 5–8 hours for two people.
Project 3: Single-Car Driveway Approach (12×20 ft, 4" thick)
Specs: 240 sq ft, 1.48 cubic yards of concrete.
| Cost Component | DIY | Contractor |
|---|---|---|
| Ready-mix concrete | $380–520 | $220–295 delivered |
| Lumber for forms | $50–80 | Included |
| Rebar (#4 grid) | $100–180 | Included |
| Tool rental (bull float, edger, groover) | $80–120 | — |
| Concrete pump (if truck can't reach) | $300–500 | Included or extra |
| Contractor labor | — | $950–1,600 |
| Total estimate | $610–900 (no pump) | $1,400–2,200 |
DIY savings: $790–1,300 (50–60%)
A driveway approach is a step up in complexity: you need rebar for vehicular load, proper slope for drainage, and a smooth enough finish to not look rough next to the street. Doable for an experienced DIYer with good helpers. Time: full day for two people. A bull float is essential here — don't skip it. What separates a driveway approach from a patio DIY is the rebar requirement and the need for proper drainage slope — both require planning before the truck arrives.
Project 4: Standard Garage Floor (20×20 ft, 4" thick)
Specs: 400 sq ft, 2.47 cubic yards of concrete.
| Cost Component | DIY | Contractor |
|---|---|---|
| Ready-mix concrete | $420–600 | $360–430 delivered |
| Vapor barrier (plastic sheeting) | $30–60 | Included |
| Wire mesh or rebar | $150–280 | Included |
| Tool rental (bull float, power trowel) | $120–200 | — |
| Concrete pump (often required) | $300–500 | Included |
| Contractor labor | — | $1,400–2,200 |
| Total estimate | $720–1,140 (no pump) | $2,000–3,200 |
DIY savings: $860–2,060 (40–65%)
A garage floor is where DIY savings are largest in absolute terms. The square footage creates a significant labor cost that you can capture. However, garage floors have high finish standards — smoothness matters for parking and appearance. A rented power trowel is nearly essential for a professional-looking result. Many experienced DIYers tackle this; it's not beginner territory. For guidance on whether your site and experience level are right for this, see the DIY vs contractor guide. Garage floors have high finish standards — smoothness matters. A rented power trowel is nearly essential for a professional-looking result.
Project 5: Residential Driveway (20×40 ft, 4–5" thick)
Specs: 800 sq ft, ~5.9 cubic yards at 4.5" average thickness.
| Cost Component | DIY | Contractor |
|---|---|---|
| Ready-mix concrete (5.9 yd³) | $820–1,100 | $770–1,000 delivered |
| Forming lumber | $100–180 | Included |
| Rebar (#4 grid throughout) | $300–500 | Included |
| Tool rental (float, groover, edger) | $80–130 | — |
| Concrete pump | $300–500 | Included |
| Contractor labor | — | $3,200–5,500 |
| Total estimate | $1,300–1,910 (no pump) | $4,800–8,000 |
DIY savings: $2,890–6,090 (55–65%)
The savings on a full driveway are substantial — but so is the complexity. At 5–6 cubic yards, you're committing to a full-day pour with a crew of three or four, a ready-mix truck in your driveway, and no margin for delays. The concrete working window on a hot or dry day can be as short as 30–45 minutes for finishing. This is expert DIY territory. If there's any doubt, the risk of a redo (demolition + new concrete + contractor) exceeds the savings. Consider hiring a contractor for the pour and just doing your own site prep. At 5–6 cubic yards with a ready-mix truck in the driveway, you have no margin for crew delays or finishing errors. The concrete working window on a hot day can be under 30 minutes.
The True DIY Calculation: Add Your Labor Value
The tables above show direct costs. To compare honestly, assign a value to your time:
Labor hours by project:
| Project | DIY Hours (2-person crew) | Your Hourly Value | Total Labor Cost |
|---|---|---|---|
| Shed pad (10×10) | 4–6 hrs | $15/hr | $120–180 |
| Patio (12×16) | 5–8 hrs | $15/hr | $150–240 |
| Driveway approach | 7–10 hrs | $15/hr | $210–300 |
| Garage floor | 8–12 hrs | $15/hr | $240–360 |
| Full driveway | 10–16 hrs | $15/hr | $300–480 |
At $15/hour (below market for most skilled labor), DIY still shows a net positive on every project. At $30/hour, smaller projects narrow significantly. This calculus is different for everyone — but the DIY savings are real as long as the work gets done right the first time.
Key Takeaways
- The savings are real and consistent. The question is never whether DIY saves money — it always does. The question is whether you can execute without a costly redo.
- The best first DIY concrete project is a shed pad or small garden path. Get one pour under your belt before tackling a garage floor.
- Large driveways have the highest absolute savings but the smallest margin for error. If uncertain, hire a contractor for the pour and do your own forming and cleanup — you still save significantly.
- Contractor pricing of $6–12/sqft is the honest benchmark. Quotes significantly below that range should prompt questions about mix quality, thickness spec, or subgrade preparation.
Use the concrete slab quote calculator to generate a DIY material estimate and compare against contractor quotes for your specific project.