A foundation is the one part of a house nobody sees once the framing goes up, and it carries every load above it for as long as the building stands. We pour concrete foundations in Alpharetta for new homes, additions, garages and detached structures: footings, stem walls and monolithic slabs. The median home here was built in 1996, so a good share of our residential work sits next to an existing structure and has to tie into it cleanly. Fulton County is hilly, with 241 feet of local relief within a few miles, and that changes from one lot to the next. Every pour is planned around the ground it sits on.
Before any forms go up, the site is graded and the soil is tested on its own terms. Rion soil is the county's dominant type and it drains well, but it is not the same on every property, so we check rather than assume. Then we dig footings, set reinforcement to the plan, and handle the permit and inspections. With about 50 inches of rain a year, we watch the forecast and keep water out of the excavation until the pour. Curing gets the time it needs. The strength of a slab is set in those first days, and rushing them is how good concrete turns into a problem. Call for a free estimate.
What a slab costs comes down to what sits under it and how the truck gets to it. Thickness, rebar or welded wire, the gravel base, a vapor barrier under any slab that will be enclosed, and the grading a sloped lot needs all move the number. A site that needs a pump or extra fill costs more than one the chute can reach. We walk the property, test the soil, and write out every line item. Call for a free estimate.
Driveways usually fail at the edges, over a base nobody compacted. We dig to firm ground, compact crushed stone, and thicken the slab where tires turn and where the apron meets the street. Rebar sits on chairs so the steel ends up in the middle of the pour, not in the dirt. Control joints are cut so cracks land where we want them. With about 50 inches of rain a year, every driveway is pitched to carry water away from the garage.
Garage, basement and workshop floors get different treatment than anything outside. We lay a vapor barrier over a compacted base, place the steel, and power-trowel the surface smooth and dense. Joints are saw-cut soon after the pour, before the slab picks its own crack lines. Then it cures slowly under cover. From there the floor can be sealed, stained, or ground and polished, depending on what the room is for.
Before we fix a crack, we find out why it opened. Settling usually means the base washed out or was never compacted. Heaving often traces back to tree roots or trapped water. Hairline shrinkage cracks can be routed and sealed. A sunken section can sometimes be lifted back to grade. When the base underneath has failed, patching only buys time, so we saw-cut the bad section, rebuild the base, dowel into the sound concrete and pour new.
Every site gets tested before we set a single form. Fulton County is hilly, with about 241 feet of local relief within a few miles, and the ground can change from one lot to the next. Rion soil is the dominant type here and it drains well, but it is not the only soil in the county, so we do not assume it. We grade and test each property on its own terms. That tells us how deep the footings go, how much reinforcement the slab needs, and where the water will want to run.
About 50 inches of rain falls here in a typical year, so drainage is part of the foundation from day one, not something patched on afterward. We shape the grade around the pour and keep water off fresh concrete. We do not pour onto a soaked subgrade just because the calendar says it is time. Forms get checked for level and square, and the steel gets checked for placement and cover, before any truck is called. We handle the permit. Nothing gets buried until it has been measured, inspected and approved.
Most foundations we pour in Alpharetta fall into one of three systems: a monolithic slab, a slab on stem walls over a crawlspace, or full basement walls on continuous footings. A monolithic slab places the footing and floor in one pour, which suits a flat lot and a single-story plan. Stem walls lift the house off grade and leave room underneath for plumbing and ductwork. Basement walls make the most sense on a sloped lot, where the ground already drops away and a walkout level can work with the hill instead of against it. The county has 241 feet of local relief within a few miles, so we see plenty of slope.
The site makes the choice, not the floor plan alone. Before we recommend a system, we grade and test the lot, because conditions change from block to block, sometimes on the same street. Rion soil is the dominant type in the county, and it drains well. It is not the only soil here, though, so we never take it on faith. Water gets planned just as carefully: the area sees about 50 inches of rain a year, and every foundation has its drainage path worked out before the forms go up. Reinforcement follows the structural drawings and the soil results, not habit. We handle the permit, and the pour follows what the ground called for.
We price every foundation from a site visit, because the lot drives the number more than the house plan does. Two footprints of the same size can land a long way apart. Most of what moves a foundation quote is something you can walk out and check yourself before we arrive.
| What changes the price | Which way | Why |
|---|---|---|
| Slope across the footprint | costs more | Fulton County is hilly. A sloped lot means more digging, taller forms or stepped footings to get the foundation level. |
| How a mixer truck reaches the forms | costs more when tight | If a truck can't back up to the pour, we pump or chute the concrete, which adds equipment and crew time. |
| An old slab, footing or stumps in the way | costs more | Anything already in the ground gets broken out and hauled off, and the base is recompacted before we form. |
| Water, gas or electric lines under the footprint | costs more | Buried lines have to be located, then worked around or moved before excavation. |
| Wall height and slab thickness in the plans | costs more as they grow | More depth means more concrete, more forming and more reinforcement. |
| Rebar spacing and dowels the plans call for | costs more when closer | More steel means more material and more hours tying it. |
| Where water goes on the lot | costs more if it pools | With about 50 inches of rain a year, poor drainage means footing drains, gravel or regrading before we pour. |
| What the soil test shows | either way | Rion soil is well drained and keeps footings standard, but it varies. Soft pockets get dug out and replaced. |
When you line up bids, compare what each one covers, not the total. Check that concrete strength, slab thickness and rebar spacing match across all of them. Then see who handles excavation, haul-off, drainage, the soil test and the permit, and who leaves those to you.
It comes down to what the ground asks of us. Forms on a flat lot go up fast, while a sloped site needs stepped footings, more digging and more concrete to reach level. Footing depth, wall height, slab thickness and the reinforcement schedule all move the number. We measure the property, walk the grade with you and put the figure in writing through a free estimate. You see it before anything is dug.
Most foundation work needs a building permit, and the footings are usually inspected before any concrete is placed. We handle the permit: the application, the drawings it asks for and the inspection scheduling. You don't need to learn the forms or wait at a counter. If the project also involves a retaining wall or new drainage, we find out what that adds up front, so the pour date isn't held up later.
Three things set it. Size is the footprint and the wall height. Site is how much grading the lot needs, how close the truck can get and whether a pump is needed. Structure covers footing width, reinforcement and any engineered details. Local terrain rises and falls about 241 feet within a few miles, and it changes block to block, so two lots on the same street can price very differently.
We price it after seeing the lot and testing the ground. Rion soil is the most common type around here and it drains well, but it varies, so every site gets tested on its own rather than assumed. That result sets footing size and depth, which sets how much concrete and steel go in. Bring house plans or a sketch of the footprint, and the estimate can be specific from the first visit.
Any number given over the phone before someone sees the lot is a guess, and foundation guesses rarely come in low. We would rather price it once and price it right. Our free estimate is itemized: excavation, forms, reinforcement, concrete, finishing and cleanup each get their own line. That way you can see what you're paying for and set it fairly beside any other bid you get for your Alpharetta home.
Before the first truck arrives, we plan its path across the property and lay mats or plywood wherever equipment crosses lawn or pavers. Washout stays in one contained spot, away from your beds and the storm drain. Where the grade runs toward the street, silt fence goes up. With around 50 inches of rain a year, loose dirt won't stay put on its own. Once the forms come off, we haul away boards, stakes, bags and scrap, then rake the site clean.