Concrete Retaining Wall Contractors in Lillington, NC

Two permit desks in one county seat: the Town and Harnett County

Lillington is the Harnett County seat, so one job can send you to two different counters. The Town's Planning and Inspections office handles building inspections inside the corporate limits and the extraterritorial jurisdiction, the ring of land outside town limits that the Town also regulates. Harnett County Central Permitting sits in the same town and processes the county's inspections, environmental health, addressing and fire marshal applications. Which side of the Town's line your parcel sits on decides which desk you start with, and a Lillington mailing address alone doesn't tell you.

The Town's residential permit list names dwellings, garages, storage buildings, decks and porches. Walls, driveways and slabs aren't on it. The Town's FAQ says to call the Planning Technician when you can't tell if a project needs a permit, so make that call before the first stake goes in. The Town's permit center page lists the forms, and our permit guide shows how the other desks in the region compare.

Fuquay and Norfolk sand, Aycock and Nason loam: what the bank is made of

Concrete retaining walls in Lillington sit on sand in one yard and clay in the next. A spot check of soil-survey map units inside town limits put Fuquay loamy sand and Norfolk loamy sand at the top, six spots each out of forty. NRCS lists both as well drained, and the Fuquay series description puts sand over a loamy subsoil. A sandy bank sheds rain fast and carries fine sand out through the toe if nothing stops it.

Aycock silt loam and Nason silt loam turned up too, and Nason is the one to plan around. The map unit that showed up is mapped on 15 to 25 percent slopes, and NRCS classes the soil as a clayey Hapludult. Clay holds water, and that water pushes on the back of the wall. On a Nason slope the stone and pipe behind the face matter as much as the concrete, so we size them first.

Roanoke loam, poorly drained and occasionally flooded, came up at two spots. Three spots landed on mined or filled ground, mapped as Pits and Dumps. Footing on loose fill shifts. On a filled lot we dig down to firm ground, or ask an engineer to weigh in, before we quote.

Concrete retaining walls in Lillington near the Cape Fear and Poorhouse Creek

The Cape Fear River crosses the northern part of town, and Poorhouse Creek starts on the southwest end. In a flood-map spot check of 40 points inside town lines, 36 read minimal hazard, 3 landed in Zone AE and 1 in the shaded 0.2 percent area. That's only a sample, so look your own address up in the NC flood risk lookup and bring the result to the estimate.

The Town's planning office enforces floodplain rules along with zoning and erosion control, so anything that holds new fill in a mapped zone is a question for them first. Near water the build changes. The drain outlet goes above normal high water. The footing goes below the depth where moving water can scour it. Fabric around the stone behind the face keeps silt out of the pipe. We go over those details on the walk-through, with the creek or river in view, and water is the first thing we ask about on any bank near either one.

A cut at the road edge: US 401, Main Street and the NCDOT desk

US 401 runs through the center of town as Main Street. If the face sits beside a driveway that meets a state-maintained road, the driveway request goes through the local NCDOT District Engineer's office, which charges no application fee and handles simple requests in about four weeks or less after you submit. Ask the Town who maintains your street before anyone cuts a curb or sets a drain pipe, because that answer decides whether you call Town Hall or the state.

Before we stake the footing, pull your plat or survey. A footing is wider than the face, and it has to stay on your side of the line with room for the stone behind it. If it will back a driveway, our Lillington driveway page covers the apron and slope that go with it. We build the wall first and pour the apron second.

The Town publishes its Unified Development Ordinance in ten articles, with a zoning overlay map and a setback table. Ask the Planning Technician whether a setback applies to a wall on your lot, because the footing would have to fit inside it. Settle that before you pick a height, since a taller face needs a wider base.

How we build the footing, steel and drain

A concrete retaining wall in Lillington gets the same spec poured or block. We dig to firm ground, compact the bed, then set the footing below the NC Residential Code's 12 inch frost line, then tie steel from the footing up into the stem. Behind the face go washed stone, filter fabric and perforated pipe that runs to a legal outlet, with weep holes through the face as a second exit. The retaining wall service page walks through the full spec.

Poured gives you a clean face that takes a stain or a plain broom finish. Block goes up in courses and can curve around a tree. Both come from the same price range, so choose by looks and by the lot. Past about 4 feet of face, an engineer draws it and we price the job per design once the drawings exist. Tell us early if you want a cap, a stain or a block veneer, since those finishes change the schedule and the line items.

Tell us what sits above the face, too. A truck parked at the top edge loads it harder than lawn does, and a shed or patio changes the spec again. Mention it on the first call and we'll size the footing for the real load.

Pricing your Lillington wall: what to bring to the walk-through

Bring the length of the run, the tallest point and what sits above the bank: lawn, driveway, shed or a house wall. Tell us whether the parcel is inside the Town or out in the county, and where roof water lands, since a downspout at the top of a bank ends up behind the face. Photos taken after a rain show where the water collects better than a tape measure does.

We call NC 811 before digging. You pick the look and the budget. We give you a free written estimate after we see the site, with footing, drain and finish listed line by line. Other flatwork in town is listed on the Lillington town page. Call (910) 996-0343 or use the contact page to set the visit for your concrete retaining wall in Lillington.

The job runs in a set order: walk-through, written estimate, whatever permit steps apply to your parcel, the utility locate, footing, steel, drain stone and pipe, then the pour. We tell you each step before it happens, and we leave the yard graded and clean.