Mccallum Bros Limited

What Mccallum Bros Limited does

McCallum Bros Limited is a fourth-generation, family-owned Auckland-based construction materials supplier and maritime services company, operating continuously since 1904. The business extracts and distributes marine sand, the Red Rock chert/jasper aggregate from the Karamuramu Island Quarry, and beach replenishment sand, primarily serving the upper North Island of New Zealand — Auckland, Northland, Waikato, and Bay of Plenty. Customers span concrete manufacturers, roading and infrastructure contractors, landscaping and sports-turf suppliers, the equestrian sector, and government bodies including Auckland Council and the Department of Conservation.

The company's core technology is a trailing suction hopper dredging system supplied by Holland Dredge Design, fitted with green valves intended to minimise environmental impact during extraction. Its flagship vessel, the 68-metre, 1,500-tonne DWT William Fraser, was commissioned in July 2019 and supports the higher-specification EQ3 sand product line, while a supporting fleet — Kapua, Annie McC, Acheron III, and Coastal Carrier — is also deployed in third-party charter work. A Marsden Bay cement barge acquired in 2018 added cement logistics to the platform, and a fleet of 38-tonne capacity road trucks provides last-mile distribution. The Karamuramu Island deposit spans roughly 15.4 km2 with several million cubic metres of reserves, and the pending Te Ākau Bream Bay consent application targets a 39 million m3 deposit over an approximately 32-year term.

Revenue is generated through direct, quote-based sales to enterprise infrastructure clients and government, project-driven aggregate supply to construction and roading contractors, ongoing beach replenishment contracts with Auckland Council, vessel charter services to third parties, and specialty sand exports via the JEMCO equestrian cooperative partnership. Pricing is negotiated per contract rather than published, and the company maintains dedicated account contacts across each customer segment. The company is privately held under Callum and Jan McCallum's full ownership, with Shayne Elstob serving as Chief Operating Officer.

Name

Mccallum Bros Limited

Legal name

McCallum Bros Limited

Website

https://mccallumbros.co.nz

Company type

Private

Founded year

1904

Operating status

Operating

Short description

McCallum Bros Limited is a fourth-generation, family-owned Auckland-based construction materials and maritime services company that extracts and distributes marine sand, Red Rock aggregate, and beach replenishment sand to infrastructure, construction, landscaping, equestrian, and government clients across New Zealand's upper North Island.

Ownership category

akta.pro rank

Product category

Construction Aggregates & Sand Supply

NAICS

Construction Sand and Gravel Mining (212321), Industrial Sand Mining (212322), Other Nonmetallic Mineral Mining and Quarrying (21239)

SIC

Mining & Quarrying Of Nonmetallic Minerals (No Fuels) (1400)

akta.pro primary industry

Sand & Gravel Extraction & Processing (IMAKAHAB)

akta.pro secondary industries

Industrial Sand (Silica Sand for Foundry, Glass & Industrial Uses) (IMAKAHAK), Dredging & Channel Deepening (Capital & Maintenance) (IMAFAJAB)

Keywords

• Sand and aggregates
• Marine extraction services
• Vessel charter services
• Beach replenishment
• Construction materials

Headquarters

HQ city

Auckland

HQ country

New Zealand

HQ region

Oceania

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Operations, Personnel, Infrastructure, Supply Chain, Technology or R&D

Revenue model

1. Sand and Aggregate Sales: Supply of high-quality sand, red rock aggregates, and quarry products including concrete sand, industrial sand, landscaping sand, turf sand, and EQ3 equestrian sand. Products supplied to building, roading, landscaping, sports turf, and equestrian industries throughout the North Island.
2. Vessel Charter Services: Fully crewed commercial vessel charter including motorised landing craft vessels, dredgers, tug and barge combinations. Services include marine extraction, bulk transport, roll-on roll-off, beach replenishment, log barging, cement transport, surveying, recovery and salvage, and operational base/support.
3. Road Transport Services: Fleet of truck and trailer units for aggregate transport with heavy transport capability up to 38 tonne capacity. Delivers products to depots and customer sites throughout wider Auckland region, Waikato and Bay of Plenty.
4. Beach Replenishment Services: Leading supplier of beach replenishment sand to beach restoration projects in Auckland region. Services include delivery by barge, pumping barge, or truck depending on beach access.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels3 records

Core offering

McCallum Bros Limited extracts and supplies high-quality sand and Red Rock aggregates (chert/jasper) for the construction, roading, landscaping, sports turf, and equestrian industries throughout New Zealand's North Island. The company also operates a fleet of fully crewed commercial vessels (dredgers, landing craft, tugs, barges) offering charter services for marine extraction, bulk transport, beach replenishment, log barging, surveying, and recovery/salvage operations.

Product overview

McCallum Bros Limited is a family-owned construction materials supplier and maritime services company operating since 1904. The company offers a diversified portfolio of products including: (1) Sand products - offshore/concrete sand, industrial sand, asphalt sand, equestrian EQ3 sand, and turf sands (Fields 800, 900, 1000, Links 707); (2) Red Rock aggregate (chert/jasper) from Karamuramu Island Quarry for concrete, roading, landscaping, and industrial applications available in various grades including chip seal and concrete mix products; (3) Beach replenishment sand; (4) Maritime vessel charter fleet including sand dredgers (William Fraser, Coastal Carrier), landing craft/barges (Kapua, Annie McC, Pohonui), tugs (Acheron III), and cement carriers (Marsden Bay); and (5) Maritime services including marine extraction, bulk transport, roll-on/roll-off, log barging, surveying, recovery/salvage, and road transport. The company operates primarily in New Zealand's North Island serving construction, roading, landscaping, sports turf, and equestrian industries.

Differentiator

Problem solved

Functional benefit

Brands

• Red Rock: Red chip aggregate product used for asphalt surfacing, landscaping, roading, and concrete applications sourced from Karamuramu Island Quarry in the Hauraki Gulf
• EQ3 Sand
• Fields 800
• Fields 900
• Fields 1000
• Links 707
• Turf Chip
• Play Sand 550

Products and services

• Concrete Sand / Offshore Sand

Quantifiable outcome

• Barging produces less CO2 emissions - road freight can emit more than 100 times more CO2 as ships to carry the same amount of freight the same distance (per International Transport Forum 2021)
• +3 more outcomes

Named customers5 records

Segments7 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Seven partnerships are on record, tiered core and minor.

• Golden Bay CementcoreStrategic or Co-development Partner · 1 January 2018McCallum Bros acquired and restored Marsden Bay cement barge for contract with Golden Bay Cement, barging cement from Portland to Eastport. Marsden Bay is not available for charter but cement can be available through Golden Bay Cement.
• Te Parawhau (via Te Pouwhenua o Tiakiriri Trust)coreStrategic or Co-development PartnerEngagement with iwi group regarding Te Ākau Bream Bay consent application. Discussions continue weekly with representatives. Company has taken steps to address concerns including attendance at induction days with Patuharakeke whānau.
• Patuharakeke (Patuharakeke Te Iwi Trust Board)coreStrategic or Co-development PartnerEngagement with iwi group regarding Te Ākau Bream Bay consent application. Discussions continue weekly with representatives. Company has taken steps to address concerns and understand their values.
• Auckland CouncilcoreStrategic or Co-development PartnerMcCallum Bros follows and supports biosecurity requirements set out by Auckland Council and Department of Conservation for operations in the Hauraki Gulf marine park area.
• Department of ConservationminorStrategic or Co-development PartnerMcCallum Bros follows and supports biosecurity requirements for protecting pest-free islands in the Hauraki Gulf that are home to endangered species.
• Northland Regional CouncilcoreStrategic or Co-development PartnerEngaging with Northland Regional Council on Te Ākau Bream Bay consent application. NRC conducted Navigational Safety assessment for the application area.
• JEMCO (Equestrian Cooperative)minorChannel Partner/ Reseller/ DistributorCooperative with other top-end equestrian suppliers formed to ensure quality and quantity of supply for export markets, particularly Japan. Also efficient for filling 40-foot containers.

Scale indicators8 records

Recent moves7 records

Expansion highlights6 records

Market position

Competitive moat6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/mccallum-bros

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Mccallum Bros Limited