How Much Does It Cost to Install a Concrete Pad?
$4 to $12 per square foot is the typical cost to install a concrete pad, with most homeowners paying $800 to $2,400 for a standard 200 square foot slab. The national average runs about $7 per square foot for a 4-inch thick pad with a basic broom finish on a relatively flat site. Smaller pads for AC units (25-50 sq ft) cost $200 to $600, while larger garage pads (400-600 sq ft) run $2,400 to $7,200 depending on thickness and finish.
The total price depends on several variables: how thick the pad needs to be, what finish you want, how much grading or excavation the site requires, and whether you need extras like rebar reinforcement or drainage. Knowing these factors ahead of time helps you compare contractor bids and catch any line items that seem out of range.
Concrete Pad Cost by Size
$200 to $7,200+ depending on the total square footage. Larger pads cost less per square foot because the setup, forming, and delivery costs get spread across more area.
| Pad Size (sq ft) | Typical Use | Cost Range |
|---|---|---|
| 25 - 50 | AC unit pad, small equipment base | $200 - $600 |
| 50 - 100 | Hot tub pad, small shed foundation | $400 - $1,000 |
| 100 - 200 | Large shed, workshop base | $700 - $2,000 |
| 200 - 400 | Single-car garage pad, patio slab | $1,200 - $3,600 |
| 400 - 600 | Two-car garage pad, large patio | $2,400 - $7,200 |
Ready-mix concrete delivery has a minimum order (usually 1 yard), so very small pads under 30 square feet sometimes cost more per square foot than mid-sized projects. For tiny AC unit pads, some contractors use bagged concrete instead of ordering a truck, which keeps the cost down.
Cost by Thickness
$4 to $10 per square foot for the slab itself, with each step up in thickness adding $1 to $3 per square foot for the extra material and labor.
| Thickness | Best For | Cost per Sq Ft |
|---|---|---|
| 4 inches (standard) | AC pads, sheds, walkways, general use | $4 - $7 |
| 6 inches (heavy duty) | Hot tubs, heavy storage, light vehicle traffic | $6 - $9 |
| 8 inches (extra heavy) | Garage pads, RV pads, heavy equipment | $8 - $12 |
Thickness matters because it determines load capacity. A 4-inch pad holds about 3,000 PSI with standard concrete mix, which is plenty for a shed or AC unit. Hot tubs filled with water weigh 3,000 to 6,000 pounds, so a 6-inch pad with wire mesh reinforcement is the minimum. Garage pads handling vehicle weight need 6 to 8 inches with rebar on 18-inch centers.
Cost by Finish Type
$0 to $6 per square foot in added cost above the base slab price, depending on the finish. A broom finish is included in the base price, while decorative finishes add labor and materials.
| Finish Type | Added Cost per Sq Ft | Notes |
|---|---|---|
| Broom finish (standard) | $0 (included) | Textured surface with good traction. Most common for utility pads. |
| Smooth / troweled | $0.50 - $1.50 | Flat, polished look. Can be slippery when wet. Best for covered areas. |
| Stamped concrete | $3 - $6 | Looks like stone, brick, or tile. Popular for patios and visible pads. |
| Exposed aggregate | $2 - $4 | Pebbly texture. Durable, good drainage, popular in warmer climates. |
For utility pads that sit behind the house or under equipment, a basic broom finish is all you need. If the pad doubles as a patio or sits in a visible area, a stamped concrete patio finish ($8 to $18 per sq ft fully installed) gives you the look of natural stone at a fraction of the cost. Exposed aggregate is a good middle ground between looks and budget.
Site Preparation Costs
$0.50 to $5 per square foot for site prep, and this is where budgets often get blown. A flat, well-drained lot needs minimal prep. A sloped or wooded site can double the total project cost.
| Site Prep Level | Cost per Sq Ft | What's Involved |
|---|---|---|
| Minimal | $0.50 - $1 | Clear vegetation, level surface, lay 4-inch gravel base. Site is mostly flat already. |
| Moderate grading | $1.50 - $3 | Minor grading with a skid steer, remove topsoil, compact soil, gravel base. Mild slope or soft soil. |
| Significant excavation | $3 - $5 | Excavate 6-12 inches, haul soil, grade to level, compact, thick gravel base. Steep slope, tree roots, or rocky ground. |
The gravel base under the pad is not optional. A proper 4-inch compacted gravel base prevents settling and cracking. Skipping it saves $0.50 per square foot upfront but almost guarantees cracks within a few years. If you are pouring on clay soil, consider a 6-inch gravel base for better drainage.
Factors That Affect Concrete Pad Cost
$200 to $7,200+ is a wide range, and several factors determine where your project falls.
Pad Purpose
What the pad supports determines thickness, reinforcement, and size requirements. An AC unit pad is a simple 3x3-foot slab. A hot tub pad needs to be thicker with reinforcement. A garage pad is the most expensive because of the size, thickness, and the need for proper drainage slope. Building a full garage on top of the pad adds significant cost - see our concrete driveway cost calculator ($3 to $10 per sq ft) if you are also planning the approach.
Reinforcement
Wire mesh adds $0.50 to $1 per square foot and prevents small cracks from spreading. Rebar adds $1 to $2 per square foot and is needed for heavy loads and thicker pads. Most contractors include wire mesh in their standard bid for 4-inch pads. Rebar is quoted separately and is standard for 6-inch and 8-inch pads.
Concrete Mix
Standard 3,000 PSI ready-mix concrete costs $125 to $140 per cubic yard delivered. A 200 square foot pad at 4 inches thick requires about 2.5 cubic yards ($310-$350 in material). High-strength 4,000 PSI mix adds $10-$15 per yard. Fiber-reinforced mix adds $5-$8 per yard and reduces surface cracking.
Access and Delivery
Ready-mix trucks need to get within 20 feet of the pour site. If the truck cannot reach the area, a concrete pump adds $150 to $300 to the job. Tight backyards, hillside lots, and properties with narrow driveways often require pump service. Short-load fees of $50 to $100 per yard apply to orders under the truck minimum (usually 3-4 yards).
Geographic Location
Concrete costs vary 20-30% by region. The Southeast and Midwest tend to be below national averages. California, the Northeast, and the Pacific Northwest run 15-25% above average due to higher labor rates and material costs. Cold-climate pours in winter require heated enclosures and additives that can add $2-$4 per square foot.
How to Save Money on a Concrete Pad
$200 to $1,000 in potential savings with smart planning and timing.
- Pour in spring or fall. Concrete contractors are busiest in summer. Scheduling in the shoulder seasons often gets you better pricing and faster availability.
- Handle site prep yourself. Clearing vegetation, removing debris, and rough-grading a flat site saves $100 to $500 on smaller pads. Make sure the area is accessible for the concrete truck.
- Stick with broom finish. Decorative finishes look great but add $3 to $6 per square foot. If the pad sits under a shed or behind the house, nobody will see it.
- Combine with other concrete work. If you need a pad and a walkway or driveway repair, doing them in one pour saves the setup, delivery, and mobilization fees ($200-$400).
- Get 3 bids minimum. Concrete pricing varies more than most trades. Three quotes from licensed contractors help you find the real market rate in your area.
- Skip over-engineering. A shed does not need an 8-inch pad with rebar. Match the thickness and reinforcement to the actual load. Your contractor can advise on the minimum specs for your use case.
Get everything you need: Concrete forming tools, levels, and finishing supplies for your pad project.
Shop Concrete Tools on AmazonFrequently Asked Questions
How much does it cost to pour a concrete pad?
A concrete pad costs $4 to $12 per square foot installed, with most homeowners paying $800 to $2,400 for a typical 200 square foot pad. The final price depends on thickness, finish type, site preparation, and your local labor rates. A basic 4-inch broom-finish pad for an AC unit or shed runs on the lower end, while a thicker stamped pad for a hot tub or garage costs more.
How thick should a concrete pad be?
A 4-inch thick pad works for most residential uses like AC units, sheds, and general outdoor slabs. Hot tubs and heavy equipment need 6 inches of thickness for the extra weight. Garage pads and areas that will support vehicle traffic should be 6 to 8 inches thick with reinforced rebar or wire mesh. Going thicker adds $1 to $3 per square foot to the project cost.
Can I pour a concrete pad myself?
Small pads under 50 square feet are manageable as a DIY project if you have experience with concrete work. You will need forms, a level surface, gravel base, concrete mix or a delivery from a ready-mix truck, and finishing tools. Larger pads over 100 square feet are difficult to pour and finish before the concrete sets, so hiring a crew is recommended. DIY saves 40-50% on labor but mistakes are permanent and costly to fix.
How long does a concrete pad take to cure?
Concrete reaches initial set in 24 to 48 hours, meaning you can walk on it. It reaches functional strength at 7 days, when you can place light items on it. Full cure takes 28 days, which is when you should place heavy loads like hot tubs, sheds, or AC units. Pouring in hot weather speeds surface drying but can cause cracking if the pad is not kept moist during the first week.
Do I need a permit to pour a concrete pad?
Most municipalities do not require a permit for small concrete pads under 200 square feet that are poured at ground level. Larger pads, raised slabs, or pads that will support structures like garages typically do require a building permit ($50-$200). Check with your local building department before starting. HOA rules may also apply to placement and appearance.