Start with where the patio will sit, then work out where the rain goes. In Mauldin the first question has a written answer in the city's zoning ordinance. The second depends on your lot and which creek it drains toward.
Our page on concrete patios covers what we pour, and the rest of our work in town is on the page for a concrete contractor in Mauldin. This one is about the rules and the water.
Can a concrete patio go inside a Mauldin setback?
Yes, if it is on grade. Sec. 3:11 of the Mauldin zoning ordinance lists on-grade patios with driveways, walkways and retaining walls as features that may be located within any required setback, subject to the limits in its table.
The same article's definition of a structure leaves out open terraces, walkways and driveways. The single-family tables in Article 5 set a 5-foot side and rear setback for accessory structures, and as we read the code, a flat slab isn't measured against that number. The city's Business and Development office has the last word on your lot, so ask them before you commit to a layout.
When does a patio stop counting as on grade?
Table 3:11-A has its own row for raised patios, decks and steps with a finished floor of 30 inches or less above the lowest adjacent grade. On a residential lot those may encroach into a setback, but no closer than 20 feet to the front property line and no closer than 5 feet to a side or rear line or buffer.
Because the height comes off the lowest adjacent grade, measure at the patio's low corner. A slab that looks level with the back step can stand well above the ground at its far edge. That row stops at 30 inches, so take anything taller to the city first. Our guide to a patio on a sloped yard covers the building side.
Concrete counts as impervious surface in Mauldin
Sec. 3:3 of the ordinance defines impervious surface as anything that “restricts or prevents the natural absorption of water into the ground,” and it names concrete. The Article 5 single-family tables carry no lot-coverage percentage, so we found no city cap to work out for a patio in those districts. Your plat or covenants may still say more.
Rain that used to soak in now runs to the edge of the slab. The NOAA normals for the Greenville-Spartanburg airport station, listed under Greer, average 49.67 inches of precipitation a year. NRMCA says the slab and subgrade should be sloped for proper drainage, so ask which way the fall runs and what sits at the low edge.
Does your lot drain toward Gilder Creek or Laurel Creek?
As our Mauldin page notes, the city's natural resources plan names Gilder Creek, in the Enoree River basin, and Laurel Creek, in the Reedy River basin, for flooding, and it cites the severe flooding of summer 2013. The same plan says most Mauldin subdivisions were built before the city adopted its floodplain and stormwater ordinances.
On an older lot, watch how water crosses the yard in a hard rain before you settle on the patio's shape. FEMA's flood map tools let you type in a street address and see its flood zone, and zones starting with A or V are its high-risk areas. If yours shows one, call the city before anyone digs. Near Oak Park Drive or Elkwood Street, read the Springfield Park stormwater note on our Mauldin page too.
What the ground needs before the pour
NRMCA's cracking sheet says all topsoil and soft spots should come out and the soil or granular fill under the slab should be well compacted. Joints go 24 to 36 times the slab thickness apart, with 15 feet as the often recommended maximum, and panels should be square with the length no more than about 1.5 times the width.
Its curing sheet puts curing at typically 3 to 7 days. The same NOAA station averages about 54 nights a year at or below freezing, and NRMCA says never to place concrete on a frozen subgrade. Before any digging, SC811 wants a request at least three business days ahead, not counting the day you file, weekends or holidays.
Who to call in Mauldin before you start
Permits in Mauldin go through the City of Mauldin Business & Development department at City Hall, 5 E. Butler Road, (864) 234-3475, and applications can be filed online. Ask whether your patio needs a permit and whether an easement or buffer on your plat limits where it can go.
If your subdivision has a homeowners association, get its answer in writing as well, since its covenants are separate from the city code.
We pour here from our Taylors shop, and a Mauldin patio gets the same site visit and free estimate as any concrete patio Greenville SC job. Call 864-214-5271 or send the address through the estimate form below.
Sources: City of Mauldin Zoning Ordinance, Article 3, as published on Zoneomics; City of Mauldin Zoning Ordinance, Article 5, as published on Zoneomics; FEMA, Know Your Flood Risk; NOAA NCEI 1991 to 2020 normals, Greer SC station; NRMCA, CIP 4 Cracking Concrete Surfaces; NRMCA, CIP 11 Curing In-Place Concrete; SC811 homeowners. All read November 10, 2026.
