Clearing Land to Build a House
Clearing land for a house is a sequence: survey and staking, the septic evaluation if there is no sewer, permits and utility locates, and only then cutting, grubbing and grading the ground the build needs. Doing it in order avoids clearing twice or ruining a usable drain field site.
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How do you clear land to build a house?
Mark the house, driveway and septic areas first, clear only what the build needs, take stumps and roots out from under anything that will carry weight, and protect the soil before rain reaches it. Around Knoxville that usually means a mulched perimeter, a fully grubbed footprint and drive, and silt fence on the downhill side before the clay is opened.
Why East Tennessee house sites need a plan
Most of the Knoxville area is Ridge-and-Valley country: limestone and dolomite under clay-rich soil, with sinkholes where the rock has dissolved. Bare clay turns slick when wet and washes off a slope fast. Wooded lots are mostly oak, hickory and other hardwoods, and old pasture fills with eastern red cedar.
Step by step: from raw lot to building pad
- Survey and stake. Find the property corners, setbacks and easements, then stake the house corners and the drive.
- Septic before clearing, if there is no sewer. TDEC's site-evaluation guidance asks owners to mark the property lines, stake the house corners (including porches, garages and pools), and mow or bush-hog around the house site and proposed soil areas, but says soil disturbance, cutting and filling should not take place. In Knox County, the health department's Groundwater Protection Division handles septic permits. Keep machines off an approved drain field.
- Line up permits. At an acre or more of clearing, grading and excavating, the state's construction stormwater general permit applies, with a Notice of Intent and a stormwater pollution prevention plan; TDEC's form asks for the notice at least 30 days before disturbance begins. Local grading and driveway permits can apply too.
- Call 811. Tennessee law requires notice to Tennessee 811 at least three working days before digging, and grubbing stumps counts.
- Fell and mulch. Trees in the footprint, the drive and a working margin come down, and brush is mulched. See tree and stump removal and forestry mulching.
- Install erosion control. Silt fence goes along the downhill side before soil is exposed; see erosion control.
- Grub the footprint. Stumps, roots and organic soil come out from under the house, garage and drive, because buried wood decays and the ground settles. This is the core of residential lot clearing.
- Grade the pad. Cut or fill to the builder's elevation, compact, and shape the pad to drain away from the foundation. See grading and pad prep.
What to do with the wood
Mulching or chipping on site is simplest; logs can be cut for firewood or hauled. Burning is tightly limited. The Tennessee Division of Forestry requires a free permit from October 15 through May 15 for an open fire within 500 feet of woods or grassland, and local rules can override that. Knox County prohibits open burning at construction sites, apart from small warming fires, and lists stumps as prohibited; Knoxville bans open burning of yard waste inside city limits. For a Knox County house lot, plan on mulching or hauling.
When to bring in a clearing crew
A homeowner with a saw can handle brush and a few small trees. Call a crew when trees could reach the house site, a road or a power line; when stumps have to come out; when the ground slopes toward a neighbor, ditch or creek; when the disturbed area nears an acre; or when a builder is waiting on a pad. Ranges are on the land clearing cost page.
Questions about clearing a house lot
Should I clear the lot before the septic evaluation?
Only lightly. TDEC asks for mowing or bush-hogging around the house site and soil areas, not cutting, filling or soil disturbance. Heavy clearing first can compact or strip the soil a drain field depends on.
Do the stumps have to come out under the house?
Yes, under the house, garage, driveway and anything else that carries weight or fill, because roots left there rot and the ground settles. Outside the footprint, stumps can be ground below grade or left to break down.
How much of the lot should be cleared?
Enough for the footprint, drive, utility trenches, septic access and the builder's working room. Keeping the rest wooded saves money and leaves roots holding the slope.
Talk through your house site
Call (865) 622-5131 and describe the lot, the house plan and whether the septic evaluation is done, or ask for a callback.