Excavation Services
in San Marcos, TX
San Marcos Elite Grading & Excavation has been excavating in the San Marcos, TX area for over 20 years! Excavation is the controlled removal of earth to a specified depth, location, and profile — the foundational operation that makes every subsequent phase of site development possible. In San Marcos and throughout Hays County, excavation scope ranges from residential foundation trenching and utility corridor digging on individual lots to large-scale commercial earthwork, detention basin construction, and raw land grubbing for subdivision infrastructure. We operate a fleet of hydraulic excavators in the 20- to 45-ton class — capable of handling both precision residential digging and volume commercial earthwork without subcontracting — serving San Marcos, Kyle, Buda, Wimberley, New Braunfels, Dripping Springs, and surrounding communities throughout Hays, Caldwell, and Guadalupe counties.
Excavation sets the conditions for everything that follows. Trenches dug to the wrong depth or profile create foundation forming problems. Utility corridors excavated without coordinating backfill compaction produce the settled trench lines that show up as surface depressions and drainage disruptions two years after construction is complete. Detention basins sized and graded incorrectly fail their hydraulic performance requirements at the first significant storm event. San Marcos Elite Grading & Excavation provides written, fixed-price excavation quotes after a no-charge site visit, with project sequencing, safety protocols, and permit requirements 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
Excavation Services We Provide
Foundation and Footing Excavation
Foundation excavation involves removing soil to the depth and profile required for the foundation system specified by the structural engineer — pier and beam foundations, spread footings, grade beams, and combined systems each require different excavation geometries. In San Marcos, the dominant foundation type for new residential construction on blackland clay is the post-tensioned slab on grade, which requires a flat, compacted subgrade rather than deep perimeter trenching. However, pier-and-beam construction common in older San Marcos neighborhoods near the Texas State University campus and in historic areas along Hopkins Street and Guadalupe Street requires precise footing trench excavation to the depths specified in the structural drawings. We excavate to plan dimensions and verify bearing conditions before forming begins — soft or unsuitable bearing material identified during excavation is over-excavated and replaced with compacted structural fill rather than left in place under the foundation.
Utility Trench Excavation
Utility trench excavation for water, sewer, electric, gas, and telecommunications infrastructure is one of the highest-frequency excavation applications on both new construction and existing property improvement projects. Trench dimensions are governed by the utility type, pipe diameter, installation depth requirements, and the bedding and backfill specifications of the applicable utility authority — the City of San Marcos Utilities Department establishes specific bedding and compaction requirements for water and sewer installations within city limits. On blackland clay sites, trench wall behavior is highly moisture-dependent — saturated clay can stand vertically in dry conditions but loses cohesion rapidly when wet, creating wall failure conditions that require active management. OSHA 29 CFR 1926 Subpart P requires protective systems — sloping, shoring, or trench box — for all trenches deeper than 5 feet, and we implement the appropriate protective system on every deep trench excavation regardless of soil conditions at the time of digging.
Pond and Detention Basin Excavation
Pond construction and stormwater detention basin excavation are common on larger residential properties and commercial development sites in Hays County, where the combination of impervious cover regulations and high rainfall intensity events requires on-site detention of stormwater runoff before it discharges to the drainage system. The City of San Marcos's drainage ordinance requires detention for commercial developments that increase peak runoff rates above pre-development conditions. We excavate detention basins and retention ponds to the geometry specified in the civil engineering drainage plan, with side slopes and bottom elevations designed to provide the required storage volume and hydraulic outlet performance. Pond excavation on blackland clay typically requires careful management of excavated material — expansive clay is not always suitable for use as structural fill elsewhere on the site and may need to be hauled off or stockpiled for specific reuse applications.
Commercial Site Excavation
Commercial site excavation along the I-35 business corridor in San Marcos and in the industrial development areas east of the highway involves earthwork volumes and project coordination requirements that exceed residential excavation in both scale and complexity. Commercial excavation scopes include mass earthwork for building pad preparation, parking lot subgrade excavation, loading dock and below-grade structure excavation, and infrastructure corridor work for utilities serving larger building footprints. Our 20- to 45-ton excavator fleet provides the production capacity to execute commercial excavation scopes on schedule without the equipment bottlenecks that constrain smaller operators. We coordinate directly with civil engineers and general contractors on excavation limits, subgrade verification, and inspection sequencing.
Rock Excavation and Caliche Removal
Lots west of the Balcones Fault in San Marcos — and throughout the Hill Country communities of Wimberley and Dripping Springs — frequently encounter limestone bedrock and caliche hardpan at shallow depths that require mechanical breaking before conventional excavation equipment can remove material efficiently. Caliche — a calcium carbonate hardpan common in Central Texas soils — can present at depths as shallow as 12 to 18 inches below the surface and creates significant production challenges for excavation equipment not configured for hard material. We assess rock and caliche conditions during the site visit and configure equipment and methods accordingly, including hydraulic breaker attachments for rock fragmentation where drilling and blasting are not warranted by the project scale.
Septic System Excavation
Rural and semi-rural properties in unincorporated Hays County that are not served by municipal sewer infrastructure require on-site sewage facilities — aerobic treatment units or conventional septic systems — that must be installed in excavated areas sized and located per the Hays County development rules and TCEQ On-Site Sewage Facility regulations. Septic system excavation involves both the tank installation pit and the drainfield trench network, with dimensions and depths governed by the system design prepared by a licensed professional. We excavate septic system components to the dimensions and depths specified in the approved system design and coordinate backfill and final grading of the drainfield area with the system installer.
Types of Properties We Serve
Residential New Construction
New residential construction on both urban infill lots in San Marcos and raw acreage parcels throughout Hays County generates excavation demand across multiple phases of the project — utility trenching, foundation preparation, and drainage infrastructure installation. Residential excavation requires precision in confined spaces, careful management of excavated material on lots with limited staging area, and coordination with the foundation contractor and utility installers who follow immediately behind the excavation phase. We have the equipment range — from rubber-track skid steers for tight residential access to mid-size excavators for deeper utility work — to execute residential excavation without the site damage that oversized equipment causes on finished or partially finished lots.
Commercial and Industrial Development
Commercial excavation projects along the I-35 corridor and in the industrial zones east of San Marcos demand equipment capacity, schedule reliability, and documentation standards that distinguish commercial-capable excavation contractors from residential-only operators. We execute commercial excavation scopes with the production capacity, safety management systems, and coordination infrastructure that general contractors and developers on commercial timelines require. All commercial excavation work is supported by written project documentation, safety plans, and inspection coordination.
Municipal and Infrastructure Projects
Excavation for municipal infrastructure — road improvements, drainage system installation, utility main extensions — in San Marcos and Hays County involves public right-of-way work requirements, traffic control planning, and coordination with city and county inspectors that require familiarity with public agency project management protocols. We have experience working in public right-of-way environments and can provide the insurance, bonding, and documentation required for municipal project participation.
Rural and Agricultural Properties
Rural property owners in Hays and Caldwell counties use excavation services for a range of applications beyond construction — stock pond construction, drainage ditch excavation, road building on private property, and site development for agricultural improvements. We evaluate rural project scopes during the site visit and provide fixed-price quotes that account for site access, haul distances, and any permit requirements applicable to the specific project type and location.
Some of Our Customer Reviews
"They brought the right size excavator for our utility trench work — not the biggest machine on the lot, which would have torn up our yard. Precise, clean, and they backfilled and compacted the trench the same day."
— Karen B., San Marcos, TX
"We needed a detention basin excavated to a civil engineering plan with specific elevation tolerances. San Marcos Elite hit every grade stake and had the basin ready for the outlet structure installation on schedule."
— Paul T., Commercial Developer, San Marcos, TX
"Rocky Hill Country lot in Wimberley — they showed up with a hydraulic breaker and worked through the caliche without drama. Pad excavation done in two days on terrain that stopped our previous contractor cold."
— Mark & Ellen F., Wimberley, TX
"Utility trench on a blackland clay site after a week of rain. They shored the trench walls properly, excavated to spec, and the city inspector passed it first try. No callbacks, no corrections."
— Steve R., General Contractor, Kyle, TX
Excavation Services FAQs
What size excavation projects do you handle in San Marcos and Hays County?
We handle residential and commercial excavation projects ranging from single utility trenches on individual lots to multi-acre commercial earthwork scopes. Our hydraulic excavator fleet spans the 20- to 45-ton class, which covers the full range of residential excavation needs and the majority of commercial site excavation requirements without subcontracting. For very large infrastructure or mass grading projects involving tens of thousands of cubic yards of earthwork, we evaluate scope and equipment requirements during the site visit and advise on whether the project falls within our fleet capacity or requires additional equipment mobilization.
How do you handle trench safety on deep excavations?
All trenches deeper than 5 feet are protected with an OSHA-compliant protective system — sloping, shoring, or trench box — per 29 CFR 1926 Subpart P requirements. The protective system selected depends on soil conditions, trench depth, and adjacent loading conditions. On blackland clay sites, we assess trench wall stability continuously during excavation and adjust the protective system if soil conditions change due to weather or groundwater. No personnel enter an unprotected trench regardless of soil conditions or project schedule pressure.
Do you coordinate utility locates before excavation?
Yes. We submit 811 Texas One-Call locate requests before every excavation project and verify that all underground utilities have been marked before equipment operates. On projects where the 811 locate markings are insufficient — older properties with poorly documented utility histories, or sites with private utilities that are not covered by the One-Call system — we use vacuum excavation or hand digging to verify utility locations in critical areas before mechanical excavation begins.
Can you excavate on lots with limited access?
Yes. We maintain rubber-track skid steers and compact excavators in our fleet specifically for residential lots and urban infill sites with constrained access — narrow side yards, low overhead clearance, and soft soil conditions that larger equipment would damage. We assess access constraints during the site visit and confirm equipment selection before mobilizing to site.
What happens to the excavated material from my project?
Excavated material is either stockpiled on site for reuse as fill elsewhere on the project, or hauled off site to a licensed disposal or reuse facility depending on the material type and the project's fill requirements. Suitable native material is reused on site wherever possible to minimize import fill costs. Unsuitable material — organic soil, excessively plastic clay, or contaminated material — is hauled off site. We advise on material disposition during the site visit based on the soil conditions observed and the fill requirements of the project.