Concrete parking lot building in Portsmouth NH - a lot that holds up to winter
Potholes, puddles and broken edges in your lot? We build concrete parking that suits your traffic and stands up to plows and salt.
- Fully licensed and insured.
- Free estimates at your property.
- We respond within 1 business day.
What does it take to build a concrete parking lot in Portsmouth?
The short answer: Concrete parking lot building in Portsmouth means preparing an even base under the whole lot and pouring concrete pavement sized for the cars and trucks that will park on it, so the lot stays flat, sheds water and gets through winter after winter.
Most people who call us about a lot have asphalt that keeps breaking up, a gravel area that ruts out every spring, or a building that needs more parking than it has. The price mostly turns on the size of the lot, what will park and drive on it, how much digging and base work the ground needs, how the water gets handled and whether old pavement has to come out first. The schedule depends more on approvals and the season than on the pour itself, and the written estimate I send after walking your site gives you the figure for your lot.
How can you tell your parking lot needs replacing?
Potholes that keep coming back
If you're patching the same holes every spring, the ground under those spots is usually soft or holding water. Each round of patching costs you money and lets more water work under the surface, so the eventual fix gets bigger.
Puddles that sit for days
Water that stays after a rain usually means the lot has settled or was never pitched to drain. In winter those puddles turn into ice patches, and the water soaking down keeps weakening whatever is holding the surface up.
Cracks and crumbling edges
Long cracks, broken corners and edges chewed up where the plow hits usually mean the pavement was too thin for its traffic or the base gave way. Left alone, sections start to shift and tip, and a repair turns into a full tear-out.
How we handle concrete parking lot building
We start by asking what will park on your lot and how you handle snow and salt, because a lot for a few cars and one that gets plowed and salted all winter need a different mix and a different layout. We also help you sort out the approvals before any site work starts. Then our crew digs out to firm ground, and when we hit a soft or wet spot we dig it out and fill it with material like the rest, so the subgrade, the ground the slab sits on, gives the same support everywhere. We pack the base, set the grades so water runs toward drains and away from the building, set the forms and any rebar, the steel that holds the slab together, and pour early in the day instead of in the midday heat that can leave a weak, dusty top. A broom finish, a light texture dragged across the surface, gives tires and boots some grip in sleet, and we cut control joints, shallow grooves that give the concrete a planned place to crack instead of a random one. If the budget gets tight, I'd rather trim the finish than the base, because nobody sees the base on day one but it decides whether your lot is still flat years from now.
A lot often brings other concrete work with it. Light poles, bollards and sign posts sit on concrete footings, which we set before the lot goes down so nobody is cutting into new pavement later. If regrading next to the building shows its foundation has settled, foundation raising lifts it back up before we pour against it.
A new lot on open ground
This suits owners adding parking where there's grass or gravel now. Most of the work goes into digging out and grading, since there's nothing to tie into and the drainage has to be planned from scratch.
Replacing a worn-out lot
This suits a lot where the asphalt or old concrete has given up. We break out and haul off the old surface and fix the base under it, because that's usually where the trouble started.
Adding spaces to an existing lot
This suits a lot that has run out of room. We tie the new concrete in at the same grade so water doesn't collect at the seam, and we check approvals early, since adding spaces can bring city review.
What happens after you call about a parking lot?
Here's how a parking lot job goes with us, from the first call to the cleanup. The order matters, because the approvals and the season both have to line up before we pick a pour date.
- Step 01
Call or send us a message
Call (603) 956-1034 or use the contact form, and we'll get back to you to set up a site visit. It helps to have the lot size, the number of spaces, the vehicles you expect and the site address ready.
- Step 02
I walk the lot with you
I come out myself, look at the ground and where the water goes, and ask how you'll use the space and how you plow. Then I send a written estimate, so you know the figure for your lot before anything gets booked.
- Step 03
We line up approvals and dates
Once you're ready, we work through any permit or review questions first. Then we pick a pour date with the season in mind.
- Step 04
We prep, pour and clean up
Our crew preps the base, pours and finishes the lot. We clean up the site before we leave.
Concrete parking lot building in Portsmouth, from approvals to winter
In Portsmouth, adding five or more parking spaces needs Site Plan Review approval from the Planning Board, so a lot with five or more new spaces starts with an application to the Planning Board. If a project under that review disturbs more than 15,000 square feet, the city's site plan rules also call for enhanced stormwater treatment, which is meant to cut down the pollutants a site sends off with its runoff. Properties inside the Pease International Tradeport follow the Pease Development Authority's land use controls, which are separate from the city's own rules. Before we set a pour date, we check what the office reviewing your lot needs and help pull together the sketches, site plans or drawings it asks for, and if you're adding fewer spaces or replacing a lot where it sits, we check with the city before planning the pour. If your property sits in a historic or flood area, we plan around that review from the start.
Winter is the other thing that shapes a lot here, because lots get plowed and salted for months. The city has listed updating its rules to cut salt use on new and redeveloped sites as one of its tasks, and it plans to find private lots with 10 or more spaces and encourage owners to hire Green SnowPro operators. That's why your snow plan comes up at the first visit, and it's the same on jobs across the Piscataqua in Kittery and up in Dover.
Get a written estimate for your parking lot
We reply within one business day to set up a visit. I come out, walk your lot and send a free written estimate, with no pressure to book.
Why Portsmouth property owners call Portsmouth Concrete Works
In business since 2017
I started this business in 2017 after years on other crews learning flatwork and foundations, and before that I was patching barn floors on our family farm. You get someone who knows how slabs fail and likes figuring out the awkward sites, like sloped lots and tight side yards.
The owner prices and pours
I look at the job and write the estimate myself, and our own crew does the work with me on site for the pours. The person who heard what you need is the one watching the concrete go in.
Fully licensed and insured
We're fully licensed and insured. That's worth checking with anyone you're comparing, because a parking lot is a big job on your property.
Approvals sorted before we dig
If your lot needs the Planning Board review covered above, we work through it with you before any site work starts. Digging first and asking later is how a half-built lot ends up sitting for a season.
On a parking lot, it comes down to the ground under the concrete and where the water goes. Send us a message and I'll come take a look at yours.
Concrete parking lot questions from Portsmouth owners
How much does a concrete parking lot cost in Portsmouth, NH?
Across the US, commercial concrete flatwork, which includes parking lots, usually costs about $6 to $14 per square foot. That's a national market range, not our price, and where your lot lands depends on its size, the traffic it carries, the base work the ground needs and whether old pavement comes out first. The written estimate after I walk your site gives you the figure for your lot.
How thick should a concrete parking lot be?
It should match the kind of traffic, the soil underneath and the strength of the concrete, so there's no single number for every lot. A lot for cars and pickups only can usually be thinner than one that serves light trucks, which is why I ask what will park and drive there before I price anything.
How do I keep a concrete parking lot from breaking down from salt and freezing?
Ask for air-entrained concrete, which has tiny air bubbles mixed in that give freezing water room to expand, since one concrete trade group's parking lot guide calls it essential where a lot goes through freeze-thaw cycles. Lots that get deicing salt fall in that guide's severe exposure category, so if you salt in winter, ask every bidder how their mix meets it. Well-placed joints control cracking and keep it to a minimum, though no joint layout stops every crack.
How long does a concrete parking lot last?
A well-built concrete lot can give satisfactory service for many years with little maintenance, according to the concrete industry's design guide for parking lots. That low upkeep is a big part of what you're paying for, and it depends on getting the base and drainage right from the start. Our work is backed by our satisfaction guarantee.
When does a parking lot need ADA accessible spaces?
Under the U.S. Access Board's ADA guide, resurfacing a lot, resealing it or adding new spaces counts as an alteration, and alterations must include accessible spaces. Fixing potholes, patching the surface or repainting the striping for a few spaces counts as normal upkeep instead, unless the work affects how usable the lot is. When your job calls for accessible spaces, we plan the layout around them.
Do I need a state permit to build a parking lot in New Hampshire?
Only for a large project, because the New Hampshire Department of Environmental Services issues Alteration of Terrain permits for work that disturbs more than 100,000 square feet, or 50,000 if any of it is within the protected shoreline. Smaller sites fall under the state's general permits by rule, which need no application or notification. Portsmouth's own site plan review is a separate question, and we check both before we plan the pour.
Related concrete work for parking lots
Concrete footings
Light poles, bollards and sign posts stand on footings poured deep enough that frost doesn't heave them, which keeps them straight beside your new lot.
Foundation raising
If a building beside the lot has settled and its doors stick or walls crack, lifting it first gives the new concrete a level edge to meet.
Call about your new parking lot
We answer until 11 PM on weekdays and 9 PM on weekends, so call (603) 956-1034 after your workday or reach us through our contact form.