Foundation block wall installation in Wilmington NC - a wall planned for what it carries
Planning an addition, crawl space or new house on block? We build the foundation wall grouted and laid out for the weight above it.
- Services
- 16
- Service areas
- 12

Get an estimate for your foundation wall
I'll walk the wall line with you and look at how water moves across your lot.
Request an estimateWhat does building a new block foundation wall involve?
Foundation block wall installation in Wilmington means building the concrete block wall that carries the weight of your house or addition, and at B&T Wilmington Concrete and Masonry we fill some or all of the block cores with grout so the wall has the strength to hold that weight.
Most folks who call about this are putting up an addition, building on a lot or replacing a wall that's past saving, and if yours is cracked but still standing, foundation repair may be the better place to start. On a new wall, the price moves with its size in square feet and its height, how much steel goes in, whether every core gets grouted and whether a flood zone means adding openings, while the schedule mostly turns on the permit, any historic district review and the weather while we're laying block. I walk the job with you and put the estimate in writing, so you see your own number before anything starts.
How we do foundation block wall installation
Before anybody sets a block, I go over the grouting plan with you, which cores get filled and where the steel goes, and I ask early whether your home is in a flood zone, so the wall is planned for it from the start instead of changed halfway through. Then our crew lays out the wall line, sets the block course by course with full mortar joints, places the steel the plan calls for and fills the cores with grout. I'd rather explain all of that while you can still see it, because once the wall's finished, the mortar and grout inside it are the parts nobody looks at again.
The connected work usually shows up once the foundation is in. We can run walkway construction from the new addition out to the driveway, and if the yard project you've been putting off is a place to cook, our outdoor kitchen masonry gets the same block, grout and mortar care we put into a foundation.
Getting a foundation block wall permitted in Wilmington
A new foundation wall is part of building or altering a structure, and the city requires a building permit for both, issued by the New Hanover County Department of Permits & Inspections. Before you apply, the city asks you to check that what you're building meets its Land Development Code, and if your house sits in one of Wilmington's local historic or overlay districts, alterations also need a Certificate of Appropriateness, which only applies to some homes. We tell you which office handles your address and whether a historic district review could come into it, and we help you get the paperwork together before work starts.
We're based in Wilmington and work across the cities around it, including the ones on this site and plenty more. We build the same kind of block foundation for additions and new homes in Porters Neck and Carolina Beach, where houses near the water often sit up on block and the flood zone question comes up a lot.
Why call us for block foundations
I walk your job myself
I'm the one who comes out to look at your job, and I'm on site with our crew of masons while the wall goes up. If you've got a question about a joint or a core, the person who planned it is standing right there.
Years learning the trade here
I started this business in 2021 after years as another mason's right hand here in Wilmington, running the crew on everything from chimneys to garden walls. That's five years under our own name, on top of the years I spent learning the work alongside someone else.
Fully licensed and insured
We're fully licensed and insured. On a wall your house is going to sit on, that's the first thing worth knowing about whoever builds it.
- Phone
- (910) 218-9550
- Hours
- Mon–Sun: 6 AM–11 PM
- Location
- Wilmington, NC 28403
On a foundation wall, the part that counts is what's inside it, so let's look at yours together. Your satisfaction, guaranteed. Request an estimate or call (910) 218-9550.
Get a written estimate for your foundation block wall
Estimates are free, done at your property and obligation-free, and we respond within one business day to set a time. I walk the job with you and put the estimate in writing, so it helps to have your address, the rough wall size in square feet and whether the house is in a historic district or flood zone ready.
- Phone
- (910) 218-9550
- Location
- Wilmington, NC 28403
- Hours
- Mon–Sun: 6 AM–11 PM
- Credentials
- Fully licensed and insured.
Frequently asked questions
How much does a concrete block foundation wall cost per square foot?
Installing a concrete block wall across the US usually costs about $16 to $19 per square foot, and that's the national figure for the wall itself, not a Wilmington price from us. Height, steel and grouting push your job one way or the other, so your own number comes from the written estimate after I walk the job with you.
What is the best way to grout a block foundation wall?
The best way is the one that fits your wall's steel layout, because that layout often decides whether partial or solid grouting costs less. A partially grouted wall gets grout only in the cores holding steel and a solidly grouted wall has every core filled, and the block industry's grouting guidance says solid grouting may be faster and more economical when the vertical steel is spaced close together.
What does grout do in a concrete block foundation wall?
Grout in the block cores gives a foundation wall added strength for the weight it carries. The same industry guidance notes it may also raise the wall's fire rating, its termite resistance, how well it blocks sound and how well it holds anchors, which is worth knowing if something will be bolted to that wall later.
Does a flood zone change how a foundation wall is built in Wilmington?
Yes, if your home sits in certain flood zones. FEMA's flood insurance program requires openings in foundation walls below the Base Flood Elevation, the flood height mapped for your area, in Zones A, AE, A1-A30, AR, AO and AH, and in Special Flood Hazard Areas, which take in both A and V zones, it also requires flood-damage resistant materials below that height.
How do I apply for a building permit in Wilmington NC?
You apply online through COAST, the county's permitting portal, or in person at the county's permits and inspections office. Either route goes to the same office that issues permits for Wilmington, and we can help you get the paperwork ready before you apply.
Does a masonry contractor need a license in North Carolina?
In North Carolina, a general contractor has to be licensed by law when the total project cost is valued at $40,000 or higher. The state's general contractor licensing board also has a Residential Contractor classification that covers masonry construction done as part of a home, so on a bigger foundation job, ask which license your contractor holds.
Related masonry work
Walkway construction
A new addition usually needs a path to its door, and a walkway on a good base keeps your feet dry and water away from the house.
Outdoor kitchen masonry
If you've been putting off a grill station or outdoor bar, we build the block base, counters and surround to stand up to coastal weather.
