Land Clearing and Site Preparation Guide

The Hill Country is unlike any other region in Texas when it comes to site work. Properties along RM 1431 near Marble Falls, out toward Bertram on Highway 29, and throughout the cedar-choked draws around Kingsland all share the same challenge: a shallow layer of topsoil — often just 4–12 inches — sitting directly on top of fractured limestone bedrock. That geological reality changes everything about how you plan and price land clearing.

The Edwards Plateau soil profile means standard excavation equipment can hit solid rock within the first foot of digging. Rocky Hill Country lots can add $2,000–$8,000 in rock removal or blasting costs compared to flatter Central Texas sites. The Burnet County area averages around 32 inches of rainfall per year, with intense spring storms from March through May that can turn a freshly graded site into an erosion disaster overnight if drainage is not properly engineered from the start.

In our experience with dozens of sites across Burnet, Lampasas, and Llano counties, the properties that require the most remediation are almost always ones where a previous owner or contractor skipped proper compaction testing. The International Building Code (IBC 2021), Section 1803, requires soil investigation for most new construction — and Burnet County's permitting office enforces this on all permitted builds. Understanding the local terrain before the first tree falls is not optional. It is the foundation of your entire project.

Ashe juniper — universally called cedar in the Hill Country — is the dominant land-clearing challenge on virtually every raw property we work across Burnet, Marble Falls, Horseshoe Bay, and Lampasas. A mature cedar thicket can have root systems extending 15–20 feet from the trunk, and if you simply cut at ground level without grubbing the stumps, regrowth will occur within 18–24 months.

For a standard 1–2 acre residential lot with moderate cedar density, mechanical clearing using a forestry mulcher runs approximately $800–$1,500 per acre. Heavy thickets with mesquite, live oak, and cedar can push that cost to $2,500–$4,000 per acre. Bulldozer clearing with stump removal typically runs $1,200–$2,000 per acre and produces material that must be either chipped on-site, hauled off, or burned under Burnet County's open burn regulations.

TMB Construction handles vegetation clearing in-house — no subcontractors for core site work — which means the same crew that clears your lot will grade it and prep it for your foundation. From our projects in Liberty Hill and Georgetown, we know that coordinating clearing and grading as a single phase saves property owners an average of $1,500–$3,000 compared to hiring separate crews. Call 830-289-3852 to get a combined clearing-and-grading estimate for your specific acreage.

After surface vegetation is cleared, grubbing removes root systems, stumps, large rocks, and organic debris to a depth of 12–18 inches below finish grade. This step is non-negotiable under IBC 2021 Section 1804.2, which prohibits organic material within the building envelope. Organic fill left under a slab will decompose over 5–10 years, creating voids that lead to differential settlement — the leading cause of cracked foundations in Central Texas residential construction.

In the Hill Country, grubbing almost always encounters limestone. Fractured surface rock can typically be broken and removed with a hydraulic hammer attachment at $150–$250 per hour. Massive ledge rock requiring blasting is a separate line item — Burnet County requires a licensed blaster under Texas Department of Licensing and Regulation (TDLR) standards, and blasting permits through the county add 2–5 business days to your timeline. Budget $3,000–$12,000 for significant rock blasting depending on volume.

From our experience with Burnet County permitting, we recommend scheduling a geotechnical assessment — typically $400–$900 — before finalizing your site budget on any property with visible rock outcroppings. Properties along RR 963 toward Kingsland and along Highway 281 south of Lampasas are especially prone to shallow ledge rock that surprises first-time Hill Country builders.

Proper grading is where site prep transitions from clearing work into structural engineering. The IBC 2021 and Texas Residential Construction standards require finish grade to slope away from the foundation at a minimum of 6 inches over the first 10 feet (a 5% slope). In the Hill Country, where limestone-dominated soils have low permeability, getting drainage right is critical — standing water after rain events is one of the fastest ways to undermine a pier-and-beam or slab foundation.

For a standard 2,500 square foot home site, rough grading runs $1,500–$4,500 depending on how much cut-and-fill is needed. Properties on slopes greater than 10% — common in the lakeside areas of Horseshoe Bay and along the Highland Lakes corridor — may require retaining walls, terracing, or engineered drainage channels that add $5,000–$25,000 to the site budget.

Burnet County sits in a 100-year floodplain overlay zone along the Colorado River tributaries. Always verify your parcel's FEMA flood zone designation through the Burnet County Appraisal District before finalizing a building location. TMB Construction includes drainage planning in every site prep scope — we have seen too many builds in Marble Falls and Bertram where drainage was ignored, resulting in costly remediation 2–3 years after move-in.

Compaction is the final and most technically critical phase of site preparation. After grading, the disturbed subgrade must be mechanically compacted to at least 95% Standard Proctor density per ASTM D698 — the threshold required by most Texas structural engineers for residential slab-on-grade foundations. Compaction is verified through nuclear densometer testing or sand cone testing, typically performed by a third-party geotechnical lab at a cost of $200–$500 per site visit.

In our 7+ years building barndominiums, custom homes, and metal buildings across the Hill Country, inadequate compaction is the single most common defect we find on sites where previous work was done by unlicensed crews. A slab poured on improperly compacted fill can show cracking within 12–18 months. Repair costs for post-pour foundation remediation routinely run $8,000–$30,000 or more — far exceeding the cost of doing compaction correctly the first time.

For sites with imported fill — necessary when significant cut material is removed from a sloped lot — fill should be placed in maximum 8-inch lifts and compacted between each lift. Clay-heavy imported fill, sometimes sourced from sites near Georgetown and Leander, performs differently than the native gravelly loam of Burnet County and requires adjusted moisture conditioning before compaction can reach the required 95% density.

Most property owners are surprised by how much permitting is involved in site preparation — even before a single foundation form is set. In Burnet County, land disturbing activities that alter drainage patterns or exceed 1 acre of total disturbance require a Texas Commission on Environmental Quality (TCEQ) Construction General Permit (CGP). This permit mandates a Storm Water Pollution Prevention Plan (SWPPP) and regular site inspections throughout the construction process. Failure to obtain a CGP on qualifying projects carries fines of up to $25,000 per day under Texas Water Code Section 26.136.

For projects within Burnet city limits or the Marble Falls city limits, additional tree preservation ordinances may restrict removal of certain heritage oaks above a defined trunk diameter — typically 8 inches DBH (diameter at breast height). Verify with the Burnet County permitting office at 830-756-5494 before clearing any trees on in-city parcels.

TMB Construction handles all permit coordination as part of our site prep service. From our experience navigating Burnet County permitting on barndominium projects and custom home sites, the permitting process typically adds 2–4 weeks to the project start date. We factor this into every project schedule we provide — no surprises at groundbreaking. Call us at 830-289-3852 and we will walk you through what your specific parcel requires.

Budgeting accurately for site preparation requires understanding that every Hill Country property is genuinely different. A flat, lightly wooded 1-acre lot near Bertram will cost a fraction of what a steeply sloped, cedar-heavy 3-acre parcel above Horseshoe Bay will cost to prepare. That said, the following ranges reflect real costs from TMB Construction projects across Burnet, Llano, and Lampasas counties as of 2025–2026.

Vegetation clearing runs $800–$4,000 per acre based on density. Grubbing and stump removal adds $500–$1,500 per acre. Rock removal without blasting is $150–$250 per hour of equipment time; blasting when required adds $3,000–$12,000 as a separate line item. Rough grading for a standard home site runs $1,500–$4,500. Compaction testing costs $200–$500 per mobilization. Erosion controls (silt fence, matting) add $300–$800 for a typical lot. Permit fees in Burnet County for residential construction average $800–$2,500 depending on project scope.

Total site prep for a modest Hill Country residential lot typically falls between $8,000–$22,000 before utility trenching and foundation work begins. Complex sloped lots with significant rock can reach $35,000–$50,000. TMB Construction provides detailed, line-item estimates at no charge — call 830-289-3852 to schedule your free on-site assessment.