PMT Lawn & Landscape
Retaining Wall Construction
Segmental block and natural stone walls built with the drainage, base, and reinforcement that keep a wall standing straight for decades.
Grade & Slope Solutions
A Retaining Wall Is a Drainage Project With a Face on It
PMT Lawn & Landscape builds retaining walls, terraces, and seat walls for homeowners across Marion and Johnson counties, serving Indianapolis and the surrounding areas. Call (317) 910-1257 and we will look at the slope, the soil, and where water is already going before proposing anything, or request an estimate.
When a wall leans, bulges, or steps out of line, the block is almost never the culprit. Water is. Saturated soil behind a wall becomes enormously heavy and pushes with hydrostatic pressure that a dry backfill would never generate. Add Indiana freeze and thaw, where that trapped water expands every time the temperature crosses freezing, and a wall built without drainage is on a countdown from the day it is finished. Most of the failing walls we are called to replace are less than ten years old.
So our retaining wall construction treats every wall as a drainage system. Clean angular drainage stone behind the face, a perforated drain tile at the base daylighting to a low point, geotextile separating the stone from the native clay so silt cannot clog it, and compacted granular base under the first course set below finished grade. Then the wall itself, with proper batter, block setback, and geogrid reinforcement layers where the height and the soil call for them. Done that way, a wall is a permanent piece of the property.
How We Build
What Goes In Behind the Face
Our clay soils are the reason every one of those retaining wall construction steps matters. Clay holds water rather than shedding it, expands when wet, and gives up almost none of it back to a poorly designed backfill. A wall that simply piles native soil behind the block is holding a wet sponge.
The drain outlet is the detail most often skipped. A drain tile that runs into buried nowhere is decorative. We plan where the water leaves the wall on day one and check that it stays clear of foundations, walkways, and the neighbor's property line. Keeping leaves out of that outlet is one reason clients with walls schedule fall leaf removal.
Compaction discipline is the other quiet difference. Structural backfill goes in shallow lifts and gets compacted between each one, because loose soil behind a wall settles, and settling soil drags the upper courses backward and opens the joints. It is slower on the front end and it is the reason a wall still reads dead straight when you sight down the face in year ten.
- Utility locates and excavation to a level, compacted base trench
- Buried first course so the wall is anchored below finished grade
- Twelve inches or more of clean angular drainage stone behind the block
- Perforated drain tile at the base, sloped and daylighted to a real outlet
- Geotextile fabric separating drainage stone from clay backfill
- Geogrid reinforcement layers tied into compacted structural backfill
- Capstones set and adhered, with grading and edging finished above
What Walls Solve
Turning a Slope Into Yard You Can Use
A steep back slope is dead space. It is difficult to mow safely, it sheds mulch into the driveway with every heavy rain, and it cannot hold furniture. Cutting a wall into that slope buys you flat ground, and flat ground is what turns a yard into somewhere people spend time. Terracing into two shorter walls instead of one tall one often costs less, needs less engineering, and gives you planting shelves as a bonus.
Walls also pair naturally with the surface in front of them. A patio cut into a slope is really a wall project with patio construction on top, and once the grade is settled the beds and lighting can be planned properly through landscape design.
It is worth asking what happens above the wall as well as behind it. Water arriving from an upslope neighbor, a downspout discharging near the top, or a lawn that sheets during heavy rain will all load the wall harder than the soil alone. We catch and redirect that water with swales, drain lines, or regrading, which usually costs far less than building extra structure to resist it.
- Level, usable lawn or patio space carved out of a sloped lot
- Terraced planting beds that stop mulch and soil from washing downhill
- Grade transitions and integrated steps between yard levels
- Seat walls and low walls that define a patio edge
- Erosion control on banks that will not hold turf
- Foundation grade correction to move water away from the house
Materials
Block Retaining Walls, Natural Stone, and Boulder Walls
A block retaining wall is the workhorse here. Segmental block is engineered for the job, sets with a consistent batter, accepts geogrid, and comes in enough colors and textures to match most homes. It is also the most predictable to price and the easiest to build tall correctly.
Natural stone reads warmer and ages better, whether that is a dry laid limestone wall or a mortared face over a structural core. Boulder walls suit larger rural or wooded lots where a rustic look fits, and they can handle significant grade quickly. Poured concrete with a stone or brick veneer makes sense where a wall doubles as structure for something else, such as the base of an outdoor kitchen or a built-in fire feature.
Whatever the face material, the engineering behind it does not change. Height, soil type, surcharge from a driveway or structure above, and whether the slope continues above the wall all drive the design. Taller walls and walls carrying a load above them get engineered plans and permits, and we would rather tell you that early than build something that has to be redone.
The PMT Difference
A Lawn & Landscape Company You Can Trust
Homeowners, property managers, and facility teams across Johnson County keep working with us for the same handful of reasons.
01
We know Central Indiana ground
Heavy clay soil, cool-season turf, and Indiana's swing from wet spring to dry August all change how a property should be treated. We plan around the conditions we work in every day.
02
We treat the property like our own
Clean edges, blown-off walks, straightened bed lines. The details you would notice at your own house are the details we finish every visit with.
03
We show up on time and communicate
You know who is coming, when they are coming, and what happens next. From the first estimate through the last cleanup of the season.
04
5.0 stars across 300+ reviews
Locally owned since 2015, licensed, bonded, and insured. Big enough to serve, small enough to care.
Questions & Answers
Retaining Wall FAQs
Water and base. Central Indiana clay traps moisture behind the wall, freeze and thaw multiplies the pressure, and a wall built without drainage stone, drain tile, and a compacted buried base has nothing to resist it. Most failures we replace are drainage failures wearing a block face.
It depends on height and location. Many jurisdictions in the Indianapolis area require a permit and engineered drawings once a wall exceeds roughly four feet, and anything near an easement, right of way, or drainage swale gets reviewed regardless of height. We check with the local authority before construction.
Shorter walls on stable ground with nothing loading them from above are typically built to manufacturer specifications. Once you add height, a slope continuing above the wall, or a driveway or structure near the top, the design needs to be engineered. Geogrid reinforcement is what makes taller walls work.
Occasionally, if the movement is minor and the base is sound. More often a leaning wall means the drainage was never installed, and the only durable fix is to take it down, correct the backfill and drain, and rebuild. We will tell you honestly which situation you are in after we open it up.
A short garden or seat wall is often a couple of days. A tall structural wall with geogrid, excavation, and hauling can run one to three weeks depending on access and length. Sites where a machine cannot reach the work take considerably longer, and we factor that into the estimate rather than discovering it midway.
Very little if it was built correctly. Keep the drain outlet clear, keep heavy woody roots off the face, and reset a capstone if one ever loosens. Routine yard care around the wall is handled through landscape maintenance.
Hold the Grade and Get Your Yard Back
PMT Lawn & Landscape has been building walls and correcting grade in Central Indiana since 2015, and wall work is part of our broader hardscape installation practice, so the patio, steps, and beds around a wall are planned in the same pass. Show us the slope and we will tell you what it will take to hold it, serving Indianapolis and the surrounding areas.
PMT Lawn & Landscape serves Greenwood, Center Grove, Franklin, Bargersville, Mooresville, and Southport. Call (317) 910-1257 or request an estimate and we will get you on the schedule.
Got a Slope, a Wash, or a Leaning Wall?
Send photos and we will tell you whether it is a repair, a rebuild, or a chance to gain real usable yard.
