Concrete Contractors in Flagstaff: Driveways, Slabs, Patios & Foundations

We are Hamilton Concrete Contractors, and our concrete layers have poured across Flagstaff for ten years, from the older streets around Commodore Avenue through to the newer blocks going in at the north-west end. We lay patios, courtyards, paths, steps and driveways. We pour house floor slabs, garage pads and shed floors. We finish in plain and broom, coloured concrete, exposed aggregate and stamped patterns, and we repair, resurface and replace concrete that has already had its life. Flagstaff is the biggest of Hamilton’s northern suburbs by population, with 12,777 usually resident people counted across its four census areas in 2023.

It is also the least uniform. The east end grew 8.7 per cent between the last two censuses while the north-west end grew 84.8 per cent, so on one street we are cutting out twenty year old concrete and on the next we are pouring a first driveway on a section that was a paddock. We quote both the same way, by walking the ground.

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Send us the street, the rough area in square metres and a photo if you have one. We will book a time to measure it.

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Flagstaff Work

The Concrete Jobs We Do in Flagstaff

Four jobs cover most of what Flagstaff asks us for. Patios and paths make up more of it than they do anywhere else we work, because a Flagstaff section is usually big enough to have a back yard worth using and flat enough that people expect to use it in winter.

Concrete Driveways and Replacements in Flagstaff

Driveways in Flagstaff split neatly between the two ends of the suburb, either a first pour on a new north-west lot or a replacement where a 1990s slab has stepped at the joints.

A replacement is a bigger job than it looks. The old slab has to be broken out, loaded and carted before anything new starts, and the base underneath usually needs rebuilding rather than reusing. We price the break-out as its own line so you can see it.

Patios, Courtyards and Outdoor Living in Flagstaff

Patios are the job Flagstaff books us for most, usually off the back of the house where the lawn never quite dries out.

The clearance under the cladding is what decides the finished level. Weatherboard, fibre cement and plaster want 150 mm above a paved surface and brick veneer wants 100 mm, and getting that wrong is what puts splash on the bottom board. We set the level off the cladding first and work the falls down from there at about 25 mm per metre.

Paths, Footpaths and Formed Steps

Paths and steps are what we lay when a Flagstaff section has a back yard nobody can reach in winter without crossing wet grass.

We pour at 100 mm, which sits above the 75 mm published minimum for a path, because the mower, the trailer and eventually a wheelbarrow all end up on it. Steps get formed to the fall that is already there. Where a path runs beside the house, the same cladding clearance applies as it does to a patio.

House Slabs, Garage Pads and Shed Floors in Flagstaff

Slabs and pads are the work we take on for Flagstaff owners adding a sleepout, a double garage or a shed at the back of a long section.

Access is usually the deciding factor, since a Flagstaff back yard is often reached down a single-width side. If the truck cannot get there we pump, and that is a decision made at the site visit rather than on the day of the pour. Say what is going on the slab and we will size the steel for it.

Start to Finish

How a Flagstaff Concrete Job Is Run

Four steps. The survey at the start is the one that saves money later.

Measure Up and Fall Survey

We measure the area, take levels off the cladding and the existing paths, and find out where water currently goes when it rains hard. On a flat Flagstaff back yard that is rarely obvious from standing in it.

Written Quote and Finish Choice

You get the price in writing with the finish, the thickness and the excavation named. If more than one finish is in the running we price them side by side.

Excavation, Base and Reinforcing

We strip the topsoil, dig to depth and compact the base in layers. Mesh goes on chairs so it ends up inside the slab rather than sitting under it, which is where mesh does nothing at all.

Pour, Texture and Control Joints

We pour, screed and finish, then cut the control joints the same day. On a patio the joints go in at 4 metre centres on a 100 mm slab, a quarter of the depth, and the surface stays damp for seven days afterwards.

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Patio and Path Prices in Flagstaff

Outdoor concrete in Flagstaff is priced per square metre and the finish moves it more than the size does. Everything below includes the excavation, the base, the reinforcing, the pour and the finish. These are guide figures as at August 2026 and they are here so you can budget, but the real number comes back after we have measured your yard and looked at how a truck reaches it. Driveways are priced the same way, with the finish setting the rate.

Flagstaff outdoor concrete	Guide range (Aug 2026)
Plain or broom finish patio	$110 to $160 / m²
Coloured concrete patio	$130 to $180 / m²
Exposed aggregate patio	$140 to $210 / m²
Concrete paths and footpaths	$100 to $150 / m²
Patio replacement, including break-out	$130 to $190 / m²

What Sits Behind a Flagstaff Patio Price

Finish. Broom sits at the bottom of the range, oxide colour a step above, exposed aggregate above that again because of the stone and the wash.

Shape. A rectangle costs less per square metre than the same area cut into curves, planter returns and step-downs, because almost all of the extra is formwork.

Levels. A patio that has to be built up to meet a door threshold means more concrete and often a retained edge. One that steps down to lawn is simpler.

Cladding clearance. Where the existing ground is already close to the bottom of the cladding, the fix is excavation and a drainage detail, and that is work before any concrete arrives.

Access. A truck that can back to the pour is the cheapest way to do it. A Flagstaff back yard behind a single-width side gate usually means a pump or a long barrow run.

Break-out. Removing an old patio or path adds demolition, loading and disposal to the front of the job.

Drainage. Where the water goes decides whether you need a channel drain, a soak pit or simply a fall to the lawn.

Steps and edges. Formed steps, thickened edges and a mowing strip all add formwork rather than area.

Two Flagstaffs

Flagstaff Is Two Different Jobs Depending Which End You Live In

Flagstaff reads as one suburb on a map and behaves like two. At the 2023 Census its four statistical areas held 12,777 usually resident people between them, up from 9,834 five years earlier. Almost all of that growth landed in one corner. Flagstaff North West went from 1,107 people to 2,046, an 84.8 per cent rise, while Flagstaff East moved from 3,810 to 4,143, a rise of 8.7 per cent. Flagstaff South and North East sat in between at roughly a third each.

What that means on the ground is two different trades in the same postcode. At the east end the concrete is mature. Driveways poured with the house have done twenty or more winters, the joints have opened, tree roots from street plantings have lifted panels, and the question is whether a slab is worth resurfacing or has to come out. At the north-west end the concrete is barely there. Sections are freshly filled, the first driveway has not gone in, and the base under it is the whole job.

The rules are the same across both. In the General Residential Zone the District Plan sets a minimum of 30 per cent permeable surface, which is the same constraint written the other way as a maximum of 70 per cent impermeable across the net site. Any new or redeveloped impermeable surface over 20 square metres has to retain 10 mm of runoff depth on site, and Council counts a sealed or compacted metal driveway as impermeable while excluding porous and permeable paving. A typical Flagstaff patio is 20 to 40 square metres, so it trips that threshold on its own.

Drainage-wise Flagstaff sits over the Kirikiriroa catchment on its western side, one of the six gully systems Council names as significant, and the eastern edge runs down to the Te Awa o Katapaki esplanade reserve behind Te Huia Drive. Sections backing onto either of those are inside the gully hazard rules, where earthworks are capped at 25 cubic metres a year. The General Residential Zone chapter of the Hamilton City District Plan is where the surface limits are set out. The rest of the concrete work we take on city-wide follows the same standards, the local rules just change which one bites first.

Why Us

Why Flagstaff Households Give Us the Job

Four things we do on a Flagstaff job that decide how it looks in ten years.

Cladding Clearance Checked Before the Pour

Before we set a finished level we measure down from the bottom of the cladding. The acceptable solution asks for 150 mm above a paved surface for weatherboard, fibre cement and plaster, and 100 mm for brick veneer. Pouring above that line is how paint fails early and how rot starts in a bottom plate.

Falls Run Away From the House

Flagstaff back yards are flat, so the fall has to be built in. We run about 25 mm per metre away from the house and take it to a point where the water has somewhere to be. A patio that ponds against a wall is a patio that stains.

Permeable Area Counted, Not Guessed

The District Plan caps impermeable surface in the General Residential Zone at 70 per cent of net site area, and anything new or redeveloped over 20 square metres has to hold 10 mm of runoff on site. We measure what is already sealed on your section before designing what goes next to it.

Old Slabs Broken Out and Carted the Same Week

When we break out an old patio or driveway, the demolition, the loading and the cartage happen inside the same visit as the dig. You do not get a pile of broken concrete on the lawn waiting on a separate truck.

Reviews

Reviews Left by Hamilton Concrete Customers

Real Google reviews from Hamilton customers, pulled live from our profile and shown unedited.

EXCELLENT

Based on 10 reviews

Amit Sharma

My driveway was cracked all over and needed replacement as it was very old and worn off. I called Hamilton Concrete Contractors for a quote and consultation. Olly came over the next day to have a look and suggested the solution that best suited to my driveway's condition. I really liked the friendly vibes from Olly and he sounded like he genuinly cared. I got 3 more quotes from other companies but they were very transactional in my opinion. I liked Olly's approach and vibe so decidied to go ahead with him. He did an exceptional job for me and I am happy with the service.

kritika arora

We had an outstanding experience with Hamilton Concrete Contractors. The team was professional, punctual, and highly skilled. They handled our concrete project from start to finish with great precision, ensuring a smooth and durable finish. Their attention to detail and quality workmanship was excellent, and they kept the site clean and safe throughout the process. Communication was clear and consistent, and all our questions were answered promptly. We are extremely happy with the results and highly recommend Hamilton Concrete Contractors for any residential or commercial concrete work in Hamilton.

Seyi Oluokun

Tested and trusted. They have proven that they are reliable for any construction project. Highly recommended to all and sundry.

abah boniface

They are absolutely reliable, they kept to the agreement and they delivered the job smoothly

Damilola Oscar (J Hanameel)

One of the best at this. I am very excited to work with them. You can trust them too, I strongly recommend!

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Common Questions

Flagstaff Concrete Questions

What Flagstaff owners ask us before a patio or driveway goes in.

What does a concrete patio cost in Flagstaff?

$110 to $160 per square metre for a plain or broom finish, $130 to $180 for coloured concrete and $140 to $210 for exposed aggregate. Paths run $100 to $150. Those are guide figures as at August 2026 and every job is measured on site before we price it.

How close can a patio come to the bottom of my cladding?

The acceptable solution sets 150 mm of clearance above a paved surface for cladding other than masonry veneer, which covers weatherboard, fibre cement and plaster, and 100 mm for brick veneer. Above unpaved ground the figures are 225 mm and 150 mm. Most Flagstaff housing is not brick veneer, so the number people quote at you is usually the wrong one.

Is there a size limit on a new patio?

Not on the patio itself, but there is a threshold worth knowing before you settle the size. Any new impermeable surface over 20 square metres in a residential zone has to hold 10 mm of runoff depth on the property, and a typical Flagstaff patio clears 20 square metres on its own. Porous and permeable paving sits outside Council’s definition of impermeable surface. We work out where your job lands and design the drainage into the quote, so it is dealt with before anyone turns up with a digger.

Can you get a truck into my back yard?

Sometimes, and if not we pump. Flagstaff sections often have a single-width side with a gate, a meter box and a downpipe in the way. We work that out at the site visit and price the access method into the quote, so nothing changes on the day.

Where do the control joints go on a patio?

On a 100 mm patio slab we cut at about 4 metre centres, a quarter of the slab depth, within 24 hours of the pour. Concrete shrinks as it cures and it will crack. The joint is how you choose the line it cracks on.

Is my old driveway worth resurfacing?

If the panels are level and sound, yes. If a panel has dropped or stepped, the base under it has failed and a new surface will follow the same movement within a couple of winters. We will tell you which one you have got, and we would rather say so at the quote than after you have paid for the wrong fix.

Which streets do you cover?

All of Flagstaff, from Commodore Avenue and Te Huia Drive through the newer north-west blocks and down to the Wairere Drive end, and the neighbouring suburbs of Rototuna, Huntington and Chartwell.

Free Concrete Quotes

Get a Quote From Concrete Layers in Flagstaff

Tell us the rough size of the area and the finish you are after. We come out, measure it and send the price in writing. Call 07 808 6940.