Concrete Contractor in Seabrook, NH - Slabs Built for Coastal Ground and Water
Portsmouth Concrete Works is a concrete contractor pouring driveways, patios, garage floors, steps and foundations for homes in Seabrook, NH, on a packed base with a plan for where the water runs off.
- Fully licensed and insured.
- Free estimates at your property.
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Seabrook concrete work, from beach houses to inland yards
The short answer: Yes, Portsmouth Concrete Works is a concrete contractor working in Seabrook. We're based up the coast in Portsmouth and take on driveways, patios, garage slabs, steps, footings and foundations here, including the awkward ones like sloped yards and tight side lots. On every job, the base and the water come first.
Seabrook jobs come in two kinds for us. Near the beach, houses sit close together on small lots, so there's not much room for a truck or for stacking forms, and the ground tends to be sandy and low. Inland, the yards open up and the work looks more like what we pour in Hampton and Exeter, with long driveways, back patios, garage slabs and front steps on houses of every age.
Either way, what's under the old concrete decides most of the job. Soft fill, sand or a lot that holds water means more digging and packing before we pour, and that's the part I'd rather spend the time on.
Seabrook slabs take a beating from winters and water
Our winters freeze and thaw the ground again and again, and any water sitting under a slab freezes and pushes it up, which is how driveways and walks end up heaved and uneven. Road salt tracked onto driveways adds the chipping and flaking surface we see on a lot of older slabs here. On new work we slope the concrete away from the house and pack the base so water has less reason to collect underneath.
Being on the coast, some Seabrook lots fall in mapped flood areas. The state's floodplain maps viewer lets you look up most parcels against the current and preliminary FEMA flood maps and coastal flood risk projections, and if yours is in one, tell us early so we can plan around that review from the start.
Concrete services for Seabrook homes and lots
Concrete driveway building
When an old driveway has sunk, cracked or holds puddles by the garage, we tear it out, rebuild the base and pour one that sheds water.
Concrete patio construction
For a backyard patio on soft or low ground, we dig out, pack the base and pitch the slab so rain runs off toward the lawn.
Stamped concrete services
Stamped concrete gives a patio or walkway the look of stone or brick in one pour, and we seal it against winter salt and wear.
Concrete sidewalk building
A front walk that has heaved or tips toward the house trips people and sends water at the foundation, so we rebuild the base and slope it away.
Garage floor concrete
For a cracked or badly pitched garage floor, we pour a new slab sloped toward the door so winter meltwater off the car drains out.
Decorative concrete
Colored or textured finishes suit entries, patios and pool areas where plain gray looks flat, and they go over the same well-packed base as any slab.
Concrete retaining walls
Where a sloped yard keeps washing onto a driveway or patio, a poured retaining wall holds the grade, with drainage behind it so water can't build up.
Concrete floor installation
For basements, sheds, workshops and additions, we pour interior floors flat and level on a packed base, ready for whatever covering or equipment goes on top.
Concrete pool decks
Around a pool, we pour a deck with a broom finish, a brushed texture that gives bare feet grip, and a fall away from the water.
Concrete steps construction
Front steps that have cracked, settled or pulled away from the house get rebuilt with even risers and a proper footing underneath them.
Slab foundation building
For a garage, addition or shed on a slab, we set the forms, base and rebar, the steel that holds the concrete together, before the pour.
Foundation installation
New foundations for homes, additions and garages, formed and poured by our own crew, with drainage planned in before backfill on low or wet lots.
Concrete parking lot building
For small business lots, shared drives and condo parking, we pour heavier slabs built for steady traffic and plowing, with the water sent to a drain.
Concrete footings
Footings carry decks, porches, additions and sheds, so we dig them down to firm ground and pour them before anything gets built on top.
Foundation raising
When a house or garage has settled unevenly, raising the foundation lets us lift it back to level and set it on new support.
Concrete cutting
We saw-cut concrete to open an old slab for a drain line, widen a doorway, or remove one damaged section without breaking up the rest.
Get a free on-site concrete estimate in Seabrook
Send the form and we'll reply within one business day to set up a visit to your Seabrook property. The estimate is free, it's done on site, and there's no obligation or pressure to book.
Working in Seabrook: who issues permits and what moves the price
Most building permits here come from the Town of Seabrook's Building / Code Enforcement department, which takes applications online, and lots near the beach may answer to the Seabrook Beach Village District's own inspector instead, so the first thing we settle is which office covers your property. Before we set a pour date, we check what that office needs and help pull together the sketches, site plans or drawings they ask for. We're fully licensed and insured, and it's fair to ask any contractor you're weighing to show you both.
Our crew comes down from Portsmouth, so we work out truck access ahead of pour day, and near the beach in summer that takes more thought, since some posted roads there limit parking to residents with a sticker from Memorial Day weekend to September 15. What moves the price here is mostly the size of the job, how much old concrete comes out and what the ground underneath needs, while the schedule turns on the permit, the weather and the curing time. Your written estimate gives you the figure for your own job.
What to expect when you call us about a Seabrook job
Here's how a Seabrook job runs from your first call to the cleanup, and who you'll deal with at each step. Most of the planning happens before anyone picks up a shovel.
- Step 01
Call or send the form
Call (603) 956-1034 or fill in the form, and we'll get back to you to set up a time to see the job. It helps to tell us what you want poured and roughly where in Seabrook the house is.
- Step 02
I walk the site myself
I come out, look at the old concrete, the ground and where the water runs, and ask how you'll use the space, so it helps if you can be there. Afterward you get a written estimate, so you know the cost and what it covers before you commit to anything.
- Step 03
Permit, pour date, base prep
Once you're ready, we sort out any permit questions with the right office and pick a pour date with the season in mind. Then our crew digs out the soft ground and packs the subgrade, the layer the slab sits on, so it's firm before any concrete arrives.
- Step 04
Pour, finish and clean up
I'm on site for the pour, and our crew finishes the surface, cuts the control joints, shallow grooves that give shrinkage cracks a planned place to go, and hauls off the mess. The slab then needs its curing time, the wait while it hardens enough to take weight, and we'll tell you when it's ready to walk and drive on.
Seabrook concrete questions from homeowners
Do I need a permit for a concrete driveway or garage slab in Seabrook, NH?
Yes if the work builds or changes a building or structure, and a driveway may need one too. The Building Department issues permits for work that builds, enlarges, alters, repairs, moves or demolishes a building or structure, and its permit applications page also lists driveway permit documents. Garage slabs, footings and foundations tie into a structure, so expect paperwork on those, and we check your job with that office before we set a pour date.
Which building code applies to my concrete project in Seabrook this year?
The New Hampshire State Building Code applies statewide, Seabrook included, and it was updated on July 1, 2026. Through December 31, 2026, permit requests can go in under either the 2021 or the 2024 codes, and from January 1, 2027, all permit requests follow the updated list, which includes the 2024 International Residential Code with New Hampshire amendments. If your permit goes in after the new year, we draw the plans to match the updated list.
Who handles building permits near Seabrook Beach?
The Seabrook Beach Village District has its own building inspector and code enforcement officer, reachable at (603) 474-7029, with office hours Tuesday from 6 to 8 PM. Its permit form says no work starts without a building permit and sets a minimum penalty of three times the permit fee. If you're near the beach and not sure which office covers your lot, call the district or the Building Department at 603-474-3871 before anything gets scheduled.
How much does a new concrete driveway cost in Seabrook, NH?
Your written estimate gives the figure, because the biggest price swings in Seabrook come from the ground and the access, and I need to see both. Soft or low ground means more digging and base, a tight beach-side lot means more handwork getting concrete in, and stamped or colored finishes cost more than a plain broom finish. If the budget is tight, I'd keep the money in the base and go simpler on the surface, because a fancy finish over a weak base cracks just the same.
What causes concrete driveways and patios to crack and sink on the Seacoast?
Most of it starts underneath, with a base that was raked level instead of dug out and packed, so it settles with the dirt and the slab goes with it. A slab that falls toward the house or holds puddles lets water get under it, and joints cut late or skipped let cracks run wherever they like. We pack the base, slope the new slab away from the house and cut the control joints on time, so the cracks concrete tends to get mostly land where we planned them.
What is the best time of year to pour concrete in Seabrook, NH?
Late spring through early fall is usually the easiest stretch, when the ground has thawed and nights stay above freezing so the slab can cure properly. Midsummer has its own risk, because concrete poured in midday heat dries too fast on top and can turn weak and dusty later, so on hot days we'd rather pour early in the morning. Colder months can work for some jobs with extra protection, and I'll tell you straight if yours should wait.
Call about your Seabrook concrete job
Call (603) 956-1034 or use the form, and mention where water sits after a rain, because that tells me what to look at first under your old slab.