Yard grading plays a critical role in preventing drainage issues that can damage your lawn and your home’s foundation. When the ground slopes toward your house, water can collect near the foundation, increasing the risk of leaks, erosion, and long-term structural problems. The goal is to create a gentle slope that directs water safely away from your home.
In this guide, we’ll walk through how to measure your yard’s slope, regrade problem areas, and improve drainage, with insights from This Old House landscape contractor Lee Gilliam. You’ll also learn when to tackle the project yourself and which top lawn care services can help maintain your yard.
Key Takeaways
- Proper yard grading creates a gentle slope away from your home’s foundation, typically around a 5% grade, or about a 6-inch drop over 10 feet, to help prevent water from collecting near the house.
- Do-it-yourself (DIY) yard grading is often affordable for small projects, while larger jobs that require equipment or professional help can cost significantly more, depending on the scope.
- To measure your yard’s slope, use two stakes and a level string over a fixed distance, then calculate the height difference as a percentage and check multiple areas for low spots.
What Does Grading a Yard Mean?
Grading a yard means reshaping the soil so water flows away from your home rather than collecting near the foundation. Rather than creating a perfectly flat surface, the goal is to establish a gentle, consistent slope that directs runoff safely toward lower areas of the yard.
In the Ask This Old House segment “How To Regrade a Yard,” landscape contractor Lee Gilliam says that proper grading starts by knocking down high spots and filling in low areas to create a smooth, even transition across the lawn. This process, often called rough grading, helps eliminate dips where water can pool and ensures the ground sheds water evenly.
In most cases, the ground should slope slightly away from the house. A common guideline is about a 5% grade, which equals roughly a 6-inch drop over 10 feet. The exact slope can vary depending on your yard, but the key is consistency; water should always move away from the foundation, not toward it.
Benefits of Having Your Yard Graded
Proper yard grading helps protect your home by directing water away from the foundation. When water collects near the house, it can seep into the foundation over time, leading to cracks, leaks, and long-term structural issues.
Grading also improves overall drainage across your lawn. Gilliam says that uneven areas and low spots can trap runoff, causing water to pool rather than drain properly. By smoothing out these areas, you reduce the risk of standing water that can attract pests and create muddy, unusable sections of your yard.
In addition to protecting your home, proper grading supports healthier soil and plant growth. Excess moisture can suffocate roots, cause rot, and wash away nutrient-rich topsoil, making it harder for grass and landscaping to thrive. A well-graded yard helps maintain balanced moisture levels, reducing erosion and improving the long-term health of your lawn.
Finally, grading helps prevent everyday nuisances such as soft, spongy ground, mower ruts, and icy patches in colder months. Gilliam says creating a smooth, consistent surface helps eliminate low spots where water can collect. This makes your yard easier to maintain and more enjoyable to use year-round.
Steps to DIY Lawn Regrading
If you’re making small grading corrections around your foundation or in a few problem spots, regrading can be a manageable DIY project. Larger yards, steep slopes, or widespread drainage issues may require heavier equipment and professional help, but the basic process is the same: measure the existing grade, reshape the soil, check your work, and restore the surface.
Step 1: Measure the Existing Grade
The first step is to determine how your yard currently slopes. For this measurement, you’ll need two stakes, about 10 feet of string, a string level, and a tape measure.
- Tie one end of the string around the first stake and drive it into the ground next to your home’s foundation so the string sits at ground level.
- Measure 100 inches (about 8 1/3 feet) away and place the second stake, then tie the other end of the string to it.
- Attach the string level near the midpoint and adjust the string on the second stake until it is level.
- Measure the distance from the ground up to the string at the second stake.
- Divide that number by 100 to calculate the slope as a decimal, then move the decimal two places to the right to convert it to a percentage.
For example, if the string is 6 inches above the ground, the slope is 6%.
Repeat this process in several locations around your foundation, including near walkways, driveways, and any areas where water tends to collect.
Pro Tip
- Gilliam advises that low spots often reveal themselves through pooling water, muddy patches, or soil buildup after rain. Mark these high and low areas with flags or spray paint as you measure, so you know exactly where to add or remove soil.
Step 2: Rebuild the Slope
Once you understand your yard’s current grade, the next step is to reshape it so water flows away from your home. This involves lowering high areas, filling in low spots, and creating a smooth, continuous slope.
Check for Obstacles
Start by inspecting the area around your foundation for vents, pipes, utility lines, and basement windows. These features must remain exposed and functional after grading and should never be buried.
If adding soil would cover basement windows, install window wells to keep dirt away from the glass. If there are shallow utility lines, have them marked before you begin digging. Contact your local utility service before digging so underground lines can be clearly identified. For larger projects, check local permit requirements.
Remove and Set Aside the Topsoil
If you’re making more than minor adjustments, remove about 3 to 4 inches of topsoil so you can work with the denser subsoil underneath. This helps create a more stable base and prevents uneven settling later. Set the topsoil aside for reuse once grading is complete.
Loosen the Soil and Add Fill
Use a tiller, shovel, or rake to loosen compacted soil so it can be moved more easily. Then begin redistributing soil by building up low areas and reducing high spots, starting near the foundation, which should remain the highest point of the slope.
Gilliam explains that effective grading comes from knocking down high spots and filling low areas to create a smooth transition across the yard, rather than making sharp changes in elevation. If additional material is needed, use fill dirt to build up the grade. Spread it in layers and use a landscaping rake to pull the soil into place.
You can also remove soil from areas that are too high and reuse it to build up lower sections. If you need additional material, estimate the amount of fill dirt required in cubic feet or cubic yards. Small projects may only require bagged soil, while larger areas are typically filled by the truckload.
Compact the Soil
After adding each layer of soil, compact it before adding the next layer. This helps prevent settling and keeps the finished grade stable over time. Use the rake’s back to smooth the surface before compacting, which helps create a more even base.
For small areas, place a sheet of plywood over the soil and walk across it to press it down evenly. For larger areas, use a hand tamper or rented compactor.
Shape the Final Grade
Continue adjusting the surface until it slopes consistently away from the house. Avoid creating dips or uneven areas where water could collect. As you shape the slope, aim for a gradual drop away from the house, typically a few inches over every 10 feet, and check your progress frequently to avoid creating new low spots.
Pro Tip
- When moving soil with a rake, adjust the angle based on how much material you need to move. A steeper angle helps move larger amounts of soil, while a flatter angle allows for finer adjustments and smoothing, a technique Gilliam uses to create a more even, consistent grade.
Leave the Foundation Exposed
As you finish shaping the slope, make sure several inches of foundation remain visible above the soil line. This helps protect siding from moisture and allows you to monitor drainage over time.
Step 3: Measure the Grade Again and Make Adjustments
Once the soil is in place, repeat the measuring process using stakes, string, and a level to check your work. Test several areas around the foundation, especially where you made the biggest changes.
Compare your new measurements to your target slope and confirm that the ground consistently directs water away from the house. If any section appears too flat or forms a slight dip, add or remove soil as needed and recheck the grade.
Grading is often an iterative process, so expect to make a few adjustments before the slope is correct. In addition to measurements, look for visual cues such as uneven transitions or areas where water might slow down or collect.
Pro Tip
- Use a leveling rake or a long straight board to spot subtle high and low areas. These tools can reveal uneven sections that may not be obvious from measurements alone.
Step 4: Replace the Topsoil and Finish the Surface
Once the rough grade is complete, spread the topsoil you removed earlier back over the surface. Aim for about 3 to 4 inches to provide a healthy base for grass and plants.
Use a rake to smooth the topsoil evenly across the graded area, blending it into the surrounding lawn. Lightly water the surface to help settle the soil, but avoid soaking it, which can create new low spots or wash away material.
After watering, inspect the area again and fill in any small dips that appear. A final round of smoothing will help create an even, stable surface for planting.
Step 5: Stabilize the Soil With Seed or Sod
Bare soil is vulnerable to erosion, especially after regrading. To protect the surface, apply grass seed or lay sod as soon as possible.
Grass roots help hold the soil in place and improve drainage by allowing water to absorb more evenly into the ground. Choose a seed mix or sod type that matches your climate and sun conditions.
Keep the area consistently moist while the grass establishes, but avoid heavy watering that could disturb the new grade. Limit foot traffic until the surface is firm and the grass has taken root.
Step 6: Consider Additional Drainage Solutions
If your yard doesn’t have enough space to create the proper slope, or if water continues to collect after regrading, you may need additional drainage solutions.
Options such as French drains, catch basins, or retaining walls can help redirect water and prevent erosion in problem areas. Grading is often the first step in improving drainage, but in some cases, it works best when combined with these systems.
When To Hire a Professional
Whether you can handle yard grading yourself depends on the project’s size and the complexity of the drainage issues. Small areas near your foundation or minor low spots in the yard are often manageable with basic tools and some time.
Larger projects, such as regrading an entire yard, correcting steep slopes, or working around obstacles like trees and hardscaping, typically require more labor and specialized equipment. In these cases, hiring a professional can help ensure the grade is consistent and that drainage issues are fully addressed.
If water continues to collect near your home after regrading, or if the soil conditions are difficult to work with, it may also be a sign that additional solutions or professional evaluation are needed.
Our Recommendation for Top Lawn Care Services
Although some companies offer both, landscaping and lawn care are two different services. While the following companies don’t offer yard grading services, they can help keep the new grass on your freshly graded lawn green and healthy.
TruGreen
Perhaps the most well-known nationwide lawn service provider, TruGreen is available in 48 states across the country. The company offers five annual lawn care packages, from just the basics to a comprehensive option that covers trees and shrubs.
You can also purchase individual treatments like aeration and fertilization to get your lawn’s health back on track.
Lawnbright
If you prefer a more DIY approach to lawn care, Lawnbright is a modern subscription service that sends you all the products you need to tend your own lawn. Every eight weeks during your area’s growing season, you’ll receive a custom blend of fertilizers and soil conditioners made of mostly natural ingredients.
FAQs About Yard Grading
How long does it take to grade a yard?
The exact length of time will depend on the size and complexity of your grading project. As a general estimate, you can usually expect to take five to seven days if you do the project yourself. If you hire professionals, it usually takes about 12 to 24 hours of labor spread over two to three days.
What kind of soil should I use to grade my yard?
You should use a dense soil like clay to form the bulk of your new gradient. This will make it easier to tamp down and prevent erosion over time. However, for the first few inches of topsoil, you can use more fertile soil to allow better grass growth.
Can I grade my yard myself?
You can handle small yard grading projects yourself, such as regrading around your foundation, patio, or other localized areas. However, larger projects, steep slopes, or yards with obstacles like trees and rocks often require professional equipment and expertise. If the work involves significant soil movement or drainage issues across the property, hiring a pro is usually the better option.
Our Rating Methodology
The This Old House Reviews Team backs up our lawn recommendations with a detailed rating methodology that we use to objectively score each provider. We review lawn care plans and packages, navigate the provider website and speak with customer service representatives, request quotes, and analyze customer reviews for each provider. We then score the provider against our review standards for plan options, additional benefits and customizability, availability, trustworthiness, and customer service to arrive at a final score on a 5-point rating scale.
