Harbor Costa Mesa Concrete pours steps for rental doors as much as homes here, every riser within a fraction of an inch of the next and every tread broomed for a wet morning.
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How a flight is built here
A flight of steps is judged by the feet that do not know it, and in Costa Mesa most of the feet on a step belong to a tenant, a visitor or a delivery driver not the person who paid for it. Nobody learns a step they use once, so a riser taller than the one below it, or a tread that is slick on a gray morning, is a fall waiting for the next stranger. So every riser is poured within three eighths of an inch of the others, every tread is broomed, and the top step meets the sill level.
Harbor Costa Mesa Concrete was founded in 2019 by Julian Mercado, who put 15 years into flatwork across coastal Orange County first, and he sets the riser heights himself. Most of the housing here went up between the 1950s and the 1970s, on slabs, so a front door stands one or two risers over the walk and a fourplex has a stoop at every door off one court. Poured on loose fill, half of them have since dropped away from the sill, and the top riser is now the tall one.
Steps are built to the California Residential Code under a CSLB C-8 concrete license, with liability insurance on every job. The code fixes what a stair has to be: no riser over 7 and three quarter inches, no tread under 10, no riser more than three eighths of an inch off its neighbor, and a handrail from four risers. The estimate names each figure, to be checked with a tape. Every flight carries a written workmanship guarantee against defects in how it was built.
Repair or replace
A gap opening under the threshold, or a first step up that feels higher than the second, means the flight has dropped away from the house while the sill stayed where the framer set it. Every inch it has gone the top riser has grown, and a stranger's foot expects the old step.
A tread that goes dark and slick under the marine layer each spring has worn smooth, or holds water because it was poured level rather than pitched forward. Scrubbing clears it for a fortnight. What keeps a foot on a wet step is a broom texture, and that goes only on fresh concrete.
A chipped edge on one step is wear, but a nosing broken back an inch or more along its length has lost the cover over the steel, and the steel is rusting behind it. That rust swells and pushes more concrete off each winter. A patch on a nosing stands proud and is kicked off.
A block of steps that moves when you stand on its edge is sitting on a hollow, where fill or a leaking downspout has washed the sand out from under it. It is one hard rain from tipping, and a stoop that tips takes a tenant down with it. That is the sign that ends the patching.
In every flight
Eight things go into every flight of steps we pour, at no separate line, and each answers what a step at a door here has to do: match the sill it serves, hold a stranger's foot on a wet morning, and stay where it was set on ground that runs when it is wet.
The old block is broken out to the fill beneath it and hauled the same day, then the sill and the walk it must meet are measured again.
The fill under the old step is probed to firm sand, and the downspout or hose bib that washed it out is piped away before anything goes back.
A footing dug below the fill and poured on plate-compacted sand, so the flight bears on ground rather than on what the builder pushed back.
Rebar dowels drilled and set into the house slab or the porch, so the flight cannot settle away from the sill and open a tall top riser.
The total rise is divided by the number of steps so every riser matches within three eighths of an inch, with the top tread level with the sill.
Each tread falls a quarter inch toward its nosing and takes a broom finish, so water leaves it and a wet foot has texture to stand on.
Where a flight has four risers or more, the rail post sleeves are cast into the concrete rather than drilled later, so the rail never works loose.
We check the risers with a tape and the treads with a level beside you, and the written guarantee is handed over before we leave.
How it can be built
Four ways to build a flight at a door here, judged on what the flight is asked to do by the people who use it. The footing, the dowels and the riser rule are the same under all four, so the table is about the shape of the steps and the tread.
| Option | Suits | Tread finish | Rail needed | Back in use |
|---|---|---|---|---|
| Two-riser stoop | A slab house door a foot over the walk | Broom across the tread | None under four risers | 48 hours on foot |
| Flight with landing | A raised porch four or more risers up | Broom, nosings tooled round | One side, posts cast in | 48 hours, rail at 7 days |
| Brick-faced risers | A 1920s Eastside bungalow porch | Broomed concrete tread | Depends on the count | 7 days for the brick to set |
| Garden steps in a bank | A yard dropping off the Westside bluff | Exposed aggregate or broom | At four or more risers | 48 hours on foot |
A stoop of one or two risers is the least work and the commonest flight here; a landing with rails is the most, as the rail posts and the second pour each add a day.
Doors and damp
The height of the door is the easy part of a flight here. The harder parts are that the step is used by people who did not build it, and that it is wet most mornings for four months of the year.
Most homes in Costa Mesa are rented, and the stock that houses them is the duplex on the Eastside, the fourplex on the Westside and the two-story apartment court along Harbor Boulevard, all of it from the 1950s to the 1970s. Each ground-floor door has a stoop, each court has a flight down to its parking, and a hundred people a week go over them carrying groceries. A riser that grew a half inch as the block settled is the one they trip on, and the landlord answers.
The damp is the second. From May into August the marine layer leaves every step here wet until midday, and a north-facing tread never dries. A trowel finish grows a film under that, and a film is what a heel goes out on. So treads are broomed and pitched a quarter inch to the nosing, and the flight is pinned to the house because the sand runs wherever a downspout sends it. Where the walk has gone too we pour the sidewalk with it.
From call to cure
Five stages, the same crew at each, and the person who measures the rise from the walk to the sill is the person who sets the riser boards. A rental door is never left without a way in overnight.
Julian Mercado measures from the walk to the sill, divides it into risers, probes the fill under the block. The figure is written before he goes.
You pick the shape from the table above, the tread finish and any rail, and take a date. A landlord gets one figure per door on the same estimate.
The old block goes to the crusher, the hollow is dug to firm sand and compacted, and the footing trench is cut below the fill.
Dowels drilled into the house, the riser boards set to the divided height, then the flight poured, nosings tooled and treads broomed to the edge.
Forms off the next morning, the flight kept damp seven days, the rail set once it has cured, and every riser taped beside you at the walk-through.
Behind the number
The count of risers starts the figure and what is under the old block finishes it. Two doors the same height can be a day apart once the fill is probed, which is why nothing is quoted from a photograph. Every estimate is measured and written on site.
One or two risers at the door of a ranch house in Mesa Verde or College Park is a morning's work, and the figure is mostly break-out and dowels.
Several stoops off one court are formed and poured together, each door itemized, and the work sequenced so no tenant loses their way in.
Five or more risers, a landing or a flight down a Westside bank means a bigger footing, cast-in rail posts and a second pour for the landing.
Brick-faced risers or an exposed aggregate tread add a trade and a day, and each is a line of its own on the estimate so you can weigh it.
The visit and the written figure cost nothing, and the call that books it comes within 1 business day. (949) 541-4812 or send us a message.
Send the form or call, and someone rings back within 1 business day to fix a time. Julian Mercado measures the rise, probes what the old block stands on and writes the figure at the door, and there is no pressure to sign on the day.
Flights we replaced
Three reviews left on Google, Facebook and the BBB, each about a flight of steps rather than a slab or a walk, and each naming the door it serves and the riser that was wrong before.
“The front stoop on our Eastside house had dropped so the top step was almost nine inches and my mother would not visit. Julian measured it, drilled into the slab, and poured two risers at exactly the same height with a broom finish. She comes over now and does not think about it.”
“I own a fourplex off Placentia Avenue and a tenant caught her heel on a rocking stoop. They replaced all four in two days, did them in pairs so nobody was locked out, and gave me one estimate with each door as a line. The rails went in the week after and have not moved.”
“Our College Park porch is five steps up and the old ones went green and slick every May. New flight, footing dug into clean sand, rail posts cast into the concrete, and the treads broomed so they dry by nine. Fourteen months on, nobody has slipped, and I check the risers with a tape for fun.”
Before you book
What moves the figure, how long a door is out of use, which flights the City looks at, what is guaranteed and what a landlord can ask for, answered for a stoop or a porch at a home or a rental here.
The number of risers and what is under the old ones. A two-riser stoop is one form and one pour; a five-riser porch flight is a footing, a landing, rail posts and two pours. Under either, the fill the old block sat on sets how much digging comes before the footing, and a stoop that rocked usually sits on a hollow. After that it is the tread finish and any brick face. Each is measured at the door and written out.
About three days, and never overnight without a way in. Day one the old block comes out and the footing is dug, day two the flight is formed and poured, and the forms come off the next morning. It takes foot traffic at 48 hours, and a rental door gets a plank ramp over the wet step so the unit is never cut off. The rail on a taller flight goes in at seven days, and the concrete is kept damp until then.
Yes. Breaking out the old block, hauling it, digging the hollow it sat on and compacting the sand are in the figure, and so are the dowels into the house and the forms. What sits outside it is named at the visit and never added later: a downspout that has to be piped away from the step, a porch slab found cracked once the block is off, or a rail chosen after the pour. The number you sign is the one on the bill.
Not usually. A stoop or a flight replaced at the same height inside your lot line is exempt under the California Residential Code, and its riser, tread and handrail rules apply whether anyone inspects it or not. A flight in a new porch, a deck or a second unit is inspected by the City of Costa Mesa under that permit, and steps in the parkway need its encroachment permit. We say at the visit which yours is.
Almost never. A stoop that has sunk away from the sill over sixty years is settlement, and every policy here treats settlement and wear as maintenance rather than a sudden loss. The exception is a covered event, a car striking the flight or a burst pipe washing the sand from under it in a night. A landlord's policy may see a step a tenant fell on differently, so photograph it first and ask first.
How it was built: the footing dug to compacted ground, the dowels into the house, every riser within three eighths of an inch of the others, the tread pitch and the broom finish, with those terms on the estimate before you sign. It is a written workmanship guarantee against defects in how it was built. Moss on a shaded tread and a rail loosened by a gate sit outside it. A fault in the build is ours to fix.
A 3,500 psi ready-mix placed the morning it is batched, number 4 rebar dowels epoxied into the house slab, number 3 bars through the flight, and a footing on compacted sand with 4 inches of crushed rock under the landing. Nosings are tooled to a half-inch radius so they do not chip, and the rail posts are galvanized steel sleeves cast in. The mix and the steel are named on the estimate, to be checked.
Only for the measurement at the start and the walk-through at the end. In between the crew needs water, a way to the door with a barrow, and the door itself kept shut on pour day. For a rental the landlord does not need to be there at all: we post the dates on the door a week ahead, pour the stoops in pairs so every tenant keeps a way in, and send the walk-through photographs with each riser measured.
Towns we pour in
The eight nearest towns on the list, with the straight-line distance from the office on Newport Boulevard beside each. Every flight is measured at the door before a figure is written.
Four jobs that tend to be booked with a new flight of steps or straight after it, at the same door, by the same crew, and itemized on the one written estimate.
The walk the bottom riser lands on, poured to meet the step at one height.
The slab a back-door step goes down to, pitched away from the house.
The wall beside a flight cut into a bank, holding the sand off the treads.
The footing under a porch or a landing, dug below the fill and inspected.
Call or send the form and you hear back within 1 business day. Say how many steps there are and whether the door is yours or a tenant's, and the visit can be booked for a day inside the same week, one figure per door.