Site Preparation for New Construction
in San Marcos, TX
San Marcos Elite Grading & Excavation has been preparing sites for new construction in the San Marcos, TX area for over 20 years! Site preparation for new construction is the sequenced process of transforming a raw or partially improved lot into a buildable surface ready for foundation installation — covering clearing, rough grading, utility trench excavation, house pad construction, and finish grading in a coordinated scope that sets the conditions for every trade that follows. In San Marcos and Hays County, site prep is the most schedule-critical phase of any custom home or commercial build. We complete site preparation scopes for custom home builders, general contractors, and developers throughout San Marcos, Kyle, Buda, Wimberley, Dripping Springs, New Braunfels, and surrounding Hays County communities.
Proper site preparation on Central Texas blackland clay is not a generic earthwork operation — it requires soil-specific knowledge, precision compaction standards, and drainage engineering that accounts for the expansive clay behavior that affects more than 25% of all residential construction sites in the region according to Texas A&M AgriLife Extension. A structural house pad built to the wrong compaction standard or with inadequate drainage integration will produce foundation movement within the first two to five years of occupancy regardless of how well the foundation itself was designed. San Marcos Elite Grading & Excavation provides written, fixed-price site prep quotes after a no-charge site visit, with grade specifications, compaction standards, and project sequencing documented at contract signing.
Why Choose Us
Local Grading Contractors with Hays County Experience
We have completed hundreds of residential and commercial grading projects across San Marcos, Kyle, Buda, Wimberley, Dripping Springs, New Braunfels, Lockhart, and Seguin.
Laser-Guided Equipment and Certified Operators
All finish grading on house pads and critical drainage work is performed with GPS and laser-guided blade control, eliminating operator error on cross-slope and drainage pitch calculations.
Proven Track Record Across Residential and Commercial Projects
In our most recent client satisfaction review, 96% of respondents rated project management and site cleanliness as "met or exceeded expectations."
Get a FREE On-Site Estimate
Site Preparation Services We Provide
Clearing and Grubbing
Site preparation begins with removing all vegetation, stumps, root systems, and organic debris from the building footprint and the drainage corridors that will govern the finished site. Organic material left in the soil profile beneath structural fill decomposes over time, creating voids that produce unpredictable settlement under foundations, flatwork, and driveways. We grub the full building pad footprint to a depth that removes all root mass larger than 2 inches in diameter, and we verify that the subgrade exposed after grubbing is suitable for fill placement before any structural earthwork begins. On lots with significant tree cover — common on the Hill Country-side parcels west of San Marcos along Ranch Road 12 and Lime Kiln Road — clearing and grubbing is sequenced to comply with the City of San Marcos's Tree Preservation Ordinance requirements before equipment operates on site.
Rough Grading and Subgrade Preparation
Rough grading establishes the approximate elevations across the site — moving the bulk of the earth to get the terrain close to the design grades shown on the civil or architectural site plan. On raw acreage lots, rough grading often involves significant cut-and-fill operations to establish a buildable platform on terrain that may have several feet of natural grade variation across the building footprint. Subgrade preparation follows rough grading and involves removing any remaining unsuitable material — soft spots, organic pockets, or zones of excessively wet clay — and replacing them with compactable fill before structural pad construction begins. The quality of subgrade preparation is the primary factor determining whether the compacted fill pad above it performs as a structural element or as a settlement-prone soft spot.
House Pad Construction
The house pad is the compacted structural fill platform on which the foundation sits — and on Central Texas blackland clay, it is the most technically demanding element of site preparation. We build house pads to meet the geotechnical specifications standard in Hays County: 95% standard Proctor compaction verified by density testing, placed in maximum 8-inch loose lifts with moisture conditioning of the fill material to within 2% of optimum moisture content before compaction. Pad elevations are set to provide a minimum 6-inch positive drainage slope away from all four sides of the foundation perimeter, and finished floor elevation is coordinated with the foundation contractor and the approved site plan. According to the National Association of Home Builders, improper drainage and inadequate compaction are cited in over 40% of new construction defect claims — both are controlled by the quality of the pad construction phase.
Utility Trench Excavation
Utility trench excavation for water, sewer, electric, gas, and communication conduits is typically performed concurrent with site preparation, before the finish grade surface is established. Trenching operations on blackland clay require careful management of trench wall stability — saturated clay can lose cohesion rapidly, creating trench wall failure conditions that present both safety and schedule risks. We excavate utility trenches to the depth and width specifications provided by the utility contractor or civil engineer and coordinate backfill and compaction of trench zones to prevent the settled trench lines that produce surface depressions and drainage disruptions after construction is complete. OSHA requires protective systems for all trenches deeper than 5 feet — we implement sloping, shoring, or trench box protection on all deep trench excavations per 29 CFR 1926 Subpart P requirements.
Finish Grading and Drainage Integration
Finish grading is the final earthwork phase — bringing the site from rough earthwork elevations to the precise finished grades required for drainage performance, code compliance, and landscaping establishment. All finish grading is performed with laser-guided blade control, holding tolerances within one-tenth of a foot. Finish grading integrates the pad drainage, swale channels, driveway grades, and any area drain connections into a unified drainage system that moves water off the site to the street, a drainage easement, or an approved outfall. On new construction sites, finish grading is typically performed after the foundation is poured and the exterior flatwork — sidewalks, driveways, patios — is complete, so that the final grade can be established around the as-built structure positions.
Permit Coordination and Inspection Scheduling
Site preparation in the City of San Marcos requires coordination with the Development Services Department on grading permits, erosion control plan approval, and inspection scheduling. In unincorporated Hays County, projects disturbing one or more acres require TCEQ Construction General Permit coverage and a Stormwater Pollution Prevention Plan. We manage permit applications, erosion control implementation, and inspection scheduling as part of the site prep scope — builders and developers on tight schedules should not be managing permit logistics while simultaneously coordinating foundation and framing crews. We identify all permit requirements at the site assessment stage and build them into the project timeline provided at contract signing.
Types of Properties We Serve
Custom Home Building Sites
Custom home construction on raw acreage lots is the primary driver of site preparation demand in San Marcos and the surrounding Hays County growth corridor. These projects typically involve full clearing and grubbing, significant cut-and-fill earthwork, structural pad construction, and utility trench excavation — all sequenced around the foundation contractor's schedule and the general contractor's critical path. We work directly with custom home builders and framing superintendents, providing schedule commitments at contract signing and coordinating directly with the project's foundation contractor on pad elevation and compaction documentation requirements.
Production Builder Subdivisions
Production builder subdivision development in San Marcos's expanding growth areas — along FM 110, Highway 80, and the corridors feeding into the Blanco Vista and other master-planned communities in the northeastern part of the city — involves site preparation at a scale and pace that demands reliable equipment capacity and experienced project management. Subdivision site prep scopes include mass grading of the full subdivision footprint, individual lot rough and finish grading, and coordination with civil engineers on infrastructure installation sequences. We have the fleet capacity to sustain production on multi-lot subdivision scopes without the scheduling gaps that smaller operators produce when equipment is pulled to other projects.
Commercial and Light Industrial Development
Commercial site preparation along San Marcos's I-35 business corridor and in the industrial development zones east of the highway involves larger earthwork volumes, more complex drainage plan requirements, and tighter coordination with civil engineers and municipal inspectors than residential projects. Commercial pads must meet the compaction and grade specifications established in the civil engineering plans, and documentation of compaction testing results is typically required for permit closeout. We execute commercial site preparation scopes with the equipment capacity, documentation standards, and inspection coordination experience that commercial project timelines require.
Acreage and Rural Development in Hays County
Rural and semi-rural lot development in Hays County — on the acreage parcels along Lime Kiln Road, Purgatory Road, and the FM routes feeding into Wimberley, Dripping Springs, and the communities west of San Marcos — presents site preparation challenges distinct from urban infill projects. Remote sites may lack established access routes, have no utility infrastructure within reach, and sit on terrain with significant natural grade variation. We assess site access, haul routes, and equipment requirements for rural projects during the site visit and build those logistics into the project scope and timeline.
Some of Our Customer Reviews
"They sequenced the entire site prep around our foundation pour date and hit every milestone. Pad was laser-checked and ready two days before the foundation crew arrived. That's the standard we needed."
— Brandon C., San Marcos, TX
"We've used several grading contractors on Hays County builds. San Marcos Elite is the only one that shows up with documentation — compaction specs, grade tolerances, permit coordination handled. Makes the inspection process straightforward."
— Mike R., General Contractor, Kyle, TX
"Raw 3-acre lot in Wimberley — cedar, live oak, rough terrain. They cleared it, built the pad, and had finish grades done in five days. Exactly what the schedule required."
— Susan & David L., Wimberley, TX
"They coordinated directly with our foundation contractor on the pad elevation. No back-and-forth between subs, no delays. That kind of communication is rare."
— Jason T., Custom Home Builder, Buda, TX
Site Preparation FAQs
How far in advance should I schedule site preparation for a new construction project in San Marcos?
For custom home projects, we recommend scheduling the site preparation scope four to six weeks before the target foundation pour date. This allows adequate lead time for permit applications, equipment scheduling, and any import fill material delivery that the pad construction requires. Projects in the City of San Marcos that require a grading permit should plan for a ten to fifteen business day permit review period before earthwork can begin. We provide a detailed project timeline at contract signing that maps site prep milestones to the foundation contractor's schedule.
What compaction standard do you build house pads to in Hays County?
We build structural house pads to 95% standard Proctor compaction, placed in maximum 8-inch loose lifts with moisture conditioning of fill material to within 2% of optimum moisture content. This is the standard required by most geotechnical engineers and foundation contractors operating in Central Texas. On projects where a geotechnical report has been prepared, we build to the compaction specifications in that report. Density testing is performed by a licensed geotechnical testing laboratory — we coordinate testing scheduling and provide the test results to the builder and foundation contractor.
What is the difference between site preparation and lot grading?
Site preparation is the full sequence of earthwork operations required to take a raw or unimproved lot to a construction-ready condition — clearing, grubbing, rough grading, pad construction, utility trench excavation, and finish grading. Lot grading refers specifically to the earthwork operations that establish surface elevations and drainage patterns, and can refer to either the rough or finish grading phase within the broader site prep sequence. On existing residential lots with drainage problems, lot grading and resloping is typically the appropriate scope. On raw lots preparing for new construction, site preparation is the full scope that includes lot grading as one of several components.
Do you provide compaction test documentation for permitted projects?
Yes. On projects requiring compaction documentation for permit closeout — which includes most commercial projects and many custom home projects in the City of San Marcos — we coordinate density testing with a licensed geotechnical testing laboratory and provide test reports to the builder, foundation contractor, and permitting authority. Compaction testing fees are passed through to the client at cost.
Can you work directly with my civil engineer or foundation contractor?
Yes. We routinely coordinate directly with civil engineers on grade plan compliance, with foundation contractors on pad elevation and compaction documentation, and with utility contractors on trench excavation sequencing. Provide contact information for your project team when you submit your estimate request and we will initiate direct coordination at the project kickoff stage.