Excavation and Grading Houston, TX

Grading is the right fix when water sits because of the shape of the ground. Signs include a yard that slopes toward the house, low spots that hold water across the lawn, soil built up against the brick until the slab edge is buried, and builder grades that have settled since the house was new.

Excavation comes before any new construction: a patio, driveway, pool deck, walkway, wall, or drainage system. Each needs existing soil removed to a set depth and a firm, level subgradeSubgradeThe native soil beneath a paving or structure after it has been excavated and prepared. In practice: Houston clay subgrades move with moisture changes, which is why base preparation and drainage underneath matter. before base material goes in. It is also needed when old concrete, failed pavers, or roots have to come out before the next phase begins.

The basic goal is positive drainagePositive drainageGrading the ground so water always moves away from the house and other structures toward a safe outlet. In practice: The first question on any Houston site visit: does the ground fall away from the slab on every side?: ground that falls away from the foundation on every side, then carries water to swalesSwaleA shallow, gently sloped channel in the ground, often grassed, that guides surface water toward an outlet. In practice: Side-yard swales between houses are common on Houston lots and are easily blocked by fences, beds or fill., drains, or the street. Building codes commonly call for several inches of fall within the first 10 feet from a foundation. On tight Houston lots that is not always possible, so drains and swales pick up where grading leaves off.

Clay changes the approach. It swells when wet and shrinks when dry, so loosely placed fill settles and changes shape. We place fill in thin lifts and compact each one rather than dumping it all at once. We also keep finish grade below the brick weep holesWeep holeA small opening near the base of a wall that lets trapped water escape. In practice: A retaining wall that cannot drain is a wall that will eventually move. TUE details always show how water leaves the back of the wall. and slab edge, so soil does not trap moisture against the house.

The grade we set becomes the reference for everything after it, so we check it at every stage.

1. 1Site visit to measure existing grades and see where water goes today.
2. 2Grade plan showing target elevations, cut and fill areas, and how water leaves the lot.
3. 3811 utility locates, plus marking of irrigation, lighting, and other private lines.
4. 4Tree protection, keeping heavy equipment out of the root zones of live oaks and other trees you are keeping.
5. 5Strip sod and remove topsoil from areas being cut or filled.
6. 6Cut high areas and fill low ones, compacting fill in lifts and checking elevations with a laser level.
7. 7Finish grade with topsoil, shape swales, and prepare the surface for sod, beds, or base material.

The right fill depends on what goes on top. Under lawn, clean topsoil or sandy loam over a compacted subgrade gives grass a good root zone. Under a patio or driveway, the subgrade is compacted clay or select fill, followed by the base material that surface calls for. Excess clay from cuts is often hauled off rather than reused, because it is hard to work and holds water.

Equipment depends on access. Compact track loaders and mini excavators handle most yards, but many Houston backyards are reached only through a side yard a few feet wide, which can mean smaller machines or hand work. Laser levels let us set and check grade precisely across the whole area, which is what flat lots need.

The volume of soil moved is the starting point: how much is cut, how much fill is imported, and how much is hauled away. Access, demolition of old concrete or pavers, tree protection, and the finished surface all add up. Wet weather can push schedules, because saturated clay cannot be compacted properly.

Permits may apply for larger grade changes or work in an easementEasementA strip of the property that someone else, often a utility or drainage district, has rights to use. Building permanent structures in an easement is usually restricted. In practice: Many Houston lots have a rear utility easement. Check the survey before placing a pergola or outdoor kitchen near the back fence., and HOAs may want to review changes that affect neighbors' drainage. Use our ballpark price tool for a starting range.

Topsoil piled against the house to create a slope is one of the most common problems. It buries the slab edge and weep holes, invites moisture and pests, and often still slopes the wrong way a few feet out. Other mistakes: fill dumped without compactionCompactionMechanically pressing soil or aggregate to make it dense and stable so it does not settle later., which settles into new low spots; grading that sends water into a neighbor's yard; and sod laid before anyone checked the grade.

We also see patios and walks poured on uncompacted clay that has since moved. Getting the grade and subgrade right before any surface goes down is the cheapest way to avoid tearing it out later.

Grading is usually the first phase. Drainage comes next: French drain installation and catch basin installation where water still collects. Lawns get lawn grading and leveling and new sod, and hard surfaces such as patio paver installation start on the subgrade we prepare. On larger properties, grading is part of land drainage installation. It all sits within our drainage service in Houston.

The crew that prepares the base finishes the surface. One team handles grading, drainage, concrete, pavers, and planting, so the grade we set is the grade the next phase builds on, with no hand-offs. A Home Scout visits every property before a proposal is written, and our design work includes a drainage and grade plan. Proposals are itemized under our price-what-we-quote guarantee, and hardscape we build carries our structural warranty.