Start with a level base and proper drainage

A patio lasts only as long as the ground beneath it. Before you lay a single stone or pour concrete, you need to excavate the area, compact the soil, and slope it slightly so water runs away from your house. Most patios need a 4-inch base layer of crushed gravel or crushed limestone, tamped down firmly. If your soil is clay or tends to stay wet, add landscape fabric under the gravel to prevent weeds and keep the layers from mixing.

The slope should drop about 1 inch for every 8 feet of length. This is not steep enough to notice when you walk on it, but it keeps standing water from pooling and cracking your patio or rotting the wood if you add a deck later. Use a long level and a measuring tape to check your slope as you work. If you are unsure whether your yard drains well, watch it after a heavy rain—water sitting in low spots for hours means you need better grading before you start.

Key Takeaways

  • Excavate and compact the soil, then add 4 inches of crushed gravel, sloping the surface away from your house at about 1 inch per 8 feet.
  • Concrete patios require a frame (usually 2x4 lumber), a concrete mix, and finishing work; they are durable but crack over time in freeze-thaw climates.
  • Paver patios use individual stones set in sand or mortar and are easier to repair one section at a time, though they settle unevenly if the base is not solid.
  • Gravel and mulch patios are the cheapest option but need raking and topping up every year or two.
  • Mark out your space with string and stakes, and call 811 before you dig to locate buried utilities.

Concrete patios: durable but prone to cracking

A concrete patio is the most common choice because it is relatively inexpensive, lasts 25 to 30 years with basic care, and requires little maintenance beyond sweeping and occasional sealing. To pour concrete, you build a frame from 2x4 lumber staked at the corners, mix concrete (or have it delivered), pour it into the frame, and finish the surface with a broom or trowel.

The concrete itself comes in bags you mix with water, or as ready-mix delivered by truck. Bag concrete works for small patios (under 100 square feet); for anything larger, ready-mix is faster and more consistent. You will need a wheelbarrow, a shovel, and a straight board to screed (level) the concrete across the top of the frame. The concrete sets in 24 to 48 hours, but you should wait a week before walking on it heavily.

Concrete cracks over time, especially in climates with freeze-thaw cycles. You can minimize cracking by scoring the surface with a broom before it fully hardens, which creates control joints that crack in a straight line rather than randomly. Seal the concrete every two to three years with a concrete sealer to keep water from seeping in and causing damage. If cracks do appear, fill them with concrete caulk or a concrete patching compound.

Paver patios: easier to repair one section at a time

Pavers are individual stones—concrete, brick, natural stone, or composite—set in sand or mortar. They cost more upfront than concrete but give you more design flexibility and let you replace a single damaged stone without affecting the rest of the patio. Pavers work well if you think you might want to change the look later or if you live somewhere with harsh winters, because you can lift and reset them if frost heave pushes them up.

For a sand-set patio, you spread 1 to 2 inches of sand over your compacted gravel base, lay the pavers in your chosen pattern, and sweep sand into the joints. This method is faster and cheaper than mortar, but the pavers can shift over time if the base settles unevenly or if you get heavy foot traffic. For a mortar-set patio, you use a concrete base instead of sand, explore mortar between each paver, and let it cure for several days. Mortar is more permanent but also more difficult to repair—you have to chisel out the old mortar and paver, then reset a new one.

Whichever method you choose, the key is a solid, level base. If your gravel is not compacted firmly or if your sand layer is too thick, the pavers will rock and settle unevenly. Rent a plate compactor (a machine that vibrates and packs soil) to do this properly—it costs $40 to $80 per day and saves you from having to hand-tamp a large area.

Gravel and mulch patios: the budget option

A gravel or mulch patio is the cheapest way to create a usable outdoor space. You straightforward excavate, compact the base, and spread 2 to 3 inches of gravel, pea gravel, or wood mulch on top. Gravel is better for high-traffic areas because it compacts and stays in place; mulch is softer underfoot and looks more finished, but it breaks down and needs replacing every one to two years.

The downside is maintenance. Gravel spreads and migrates, especially if you rake it or if water runs across it. You will need to rake it level periodically and add fresh material every couple of years. Weeds can grow through gravel unless you use landscape fabric underneath, and the fabric itself can tear and need patching. For a small patio or a temporary solution, gravel works fine. For a long-term, low-maintenance space, concrete or pavers are better investments.

Mark out your space and check for utilities

Before you dig, mark the outline of your patio with string and wooden stakes. Measure twice—a patio that is a few feet off will be obvious every time you use it. Use a carpenter's square or the 3-4-5 method (measure 3 feet along one side, 4 feet along the other, and adjust until the diagonal is 5 feet) to make sure your corners are square.

Call 811 (or your local utility locating service) at least two to three days before you dig. This is free and required by law in most states. A technician will come out and mark the location of buried gas, electric, water, and sewer lines with paint or flags. Hitting a gas line or electrical cable can be fatal, so do not skip this step even if you think you know where the utilities are.

Finishing touches and ongoing care

Once your patio is in place, you can add edging to keep gravel from spreading or to define the boundary. Aluminum or plastic edging is inexpensive and straightforward to install; stone or brick edging looks more finished but costs more. If you want to add a pergola, fire pit, or seating area, plan the layout before you pour concrete or lay pavers, so you can work around permanent features.

Concrete and pavers need little maintenance beyond sweeping and occasional washing with a hose. Seal concrete every two to three years to prevent water damage and staining. Pavers in sand can be re-leveled by lifting a few stones, adding or removing sand, and resetting them. If you have a gravel patio, rake it level in spring and add fresh material as needed.

When to call a professional

If your yard slopes steeply, has poor drainage, or has a high water table, a professional can assess the site and recommend solutions like a French drain or a retaining wall. If you are pouring a large concrete patio (over 200 square feet) and have never done it before, hiring a concrete contractor is worth the cost—mistakes in mixing, pouring, or finishing can ruin the whole job.

For paver patios, the labor is mostly straightforward, but if you want a complex pattern or if your site has unusual angles, a professional can save you time and material waste. If you are unsure about your base preparation or slope, a quick consultation with a contractor can prevent costly mistakes later.

Frequently Asked Questions

How much does a patio cost?

Costs vary widely by material and size. Gravel runs $1 to $3 per square foot; concrete $4 to $8; pavers $8 to $20. A 200-square-foot concrete patio might cost $800 to $1,600 in materials, plus labor if you hire someone. Gravel is cheapest upfront but needs replacement every few years.

Can I build a patio on top of an old one?

Not reliably. An old patio that is cracked or uneven will cause a new layer to settle unevenly. Remove the old surface first, or break it up and use it as base material. If the old patio is in good shape, you can pour concrete over it, but the new concrete may crack where the old one did.

What is the best time of year to build a patio?

Spring and fall are ideal because temperatures are moderate and rain is less likely to interfere with concrete curing or mortar setting. Avoid pouring concrete in freezing weather or heavy rain. Summer heat can cause concrete to cure too fast and crack.

Do I need a permit to build a patio?

Most jurisdictions do not require a permit for a ground-level patio, but some do if it is over a certain size or if it is attached to your house. Check with your local building department before you start. A permit is almost always required if you are adding utilities like lighting or a gas line.

How do I prevent weeds from growing through my patio?

Use landscape fabric under gravel or mulch. For pavers in sand, sweep polymeric sand (which hardens when wet) into the joints instead of regular sand. For concrete, seal it regularly and fill cracks promptly. Hand-pull weeds as they appear, or use a weed killer designed for patios.