What STA Consulting Engineers does

STA Consulting Engineers (legal entity STA Consulting Group Pty Ltd) is an Australian engineering consulting firm headquartered in Eight Mile Plains, Brisbane, that has delivered integrated engineering services to the residential and commercial construction industry since 1991. The company operates six core service lines — soil testing, foundation engineering, structural engineering, hydraulic engineering, building inspections, and geotechnical engineering — through a vertically integrated model that includes its own NATA-accredited soil testing laboratory. STA serves volume residential builders, custom home builders, building designers, owner-builders and commercial construction clients across Queensland and New South Wales, having completed over 500,000 projects and currently processing more than 1,200 jobs per month.

The firm has built a portfolio of proprietary engineering tools over three decades, including the Retaining Wall Design Risk Matrix, the CHECKWIND wind assessment software integrated with Google Maps for site-specific wind load determination under AS 4055 and AS/NZS 1170.2, the Y'm site classification spreadsheet, the SLOG foundation design software, a traffic-light inspection app that checks up to 60 elements per site, and an Internal Perimeter Zone methodology for sanitary drainage that reduces articulation requirements inside the slab on Class H and E sites. Most recently, STA introduced drone-based slope stability assessments (July 2025) and expanded its progress reporting initiative to building inspections (June 2025). Compliance is underpinned by NATA laboratory accreditation, ISO 9001 quality certification, and a team of RPEQ-registered professional engineers.

STA's commercial model is a project-based professional services fee structure: customers request quotes through the website or dedicated phone lines, services are quoted per project scope and complexity, and engineering disciplines can be bundled into comprehensive packages for cost savings. The go-to-market is sales-led and direct, with regional sales teams in Brisbane (covering South East Queensland, Sunshine Coast, Gold Coast, Toowoomba, Wide Bay Burnett, Darling Downs) and New South Wales (covering Sydney, Hunter, Northern Rivers, Mid North Coast, Central Coast, Illawarra), supported by industry blog content, a monthly newsletter, social channels and memberships with HIA, Master Builders Queensland, Master Builders Association, NASH, NATA and Compliance Australia Certification Services. Revenue is project-fee based rather than recurring, with multi-decade relationships with named enterprise customers including Metricon, Sunvista Homes, InVision Homes, Heisig, Brett Ward Homes and Kerdic.

Name

STA Consulting Engineers

Legal name

STA Consulting Group Pty Ltd

Website

https://staconsulting.com.au

Company type

Private

Founded year

1991

Operating status

Operating

Headcount range

51–100 employees

Short description

STA Consulting Engineers is a Brisbane-headquartered Australian engineering consultancy providing soil testing, foundation design, structural, hydraulic, geotechnical engineering and building inspection services for residential and commercial builders across Queensland and New South Wales.

Ownership category

akta.pro rank

Product category

Construction Engineering Consulting Services

NAICS

Engineering Services (54133), Architectural, Engineering, and Related Services (5413), Engineering Services (541330), Testing Laboratories and Services (54138), Building Inspection Services (541350)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Civil & Structural Engineering Consulting (BPAHAIAA)

akta.pro secondary industries

Geotechnical & Subsurface Engineering Consulting (BPAHAIAB), Geotechnical Design, Engineering & Consulting (Analysis, Design, Peer Review) (IMAFAOAK), Geotechnical Investigation & Site Characterization (Boreholes, In-situ Testing, Lab Testing) (IMAFAOAG), Commissioning, Testing & Closeout Services (Cx, TAB, Punchlist) (EDAEABAO)

Keywords

• Soil testing services
• Foundation engineering design
• Structural engineering consulting
• Building inspection services
• Geotechnical engineering

Headquarters

HQ city

Eight Mile Plains

HQ country

Australia

HQ region

Oceania

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales

Revenue model

1. Engineering Consulting Services: Project-based engineering consulting fees for soil testing, foundation design, structural engineering, hydraulic engineering, geotechnical engineering, and building inspections. Services are quoted on a per-project basis and can be bundled into comprehensive engineering packages. Revenue is generated through one-time project fees rather than recurring subscriptions.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels7 records

Core offering

STA Consulting Engineers provides integrated engineering consulting services for residential and commercial construction projects across Queensland and New South Wales. Core offerings span soil testing with an in-house NATA-accredited laboratory, foundation engineering design, structural engineering, hydraulic engineering, geotechnical assessments, and compliance building inspections, delivered as bundled project packages to volume builders, custom home builders, developers, and building designers.

Product overview

STA Consulting Engineers provides integrated end-to-end engineering services for residential and commercial construction across Queensland and NSW. The company operates as a one-stop engineering consultancy offering six core service areas: Soil Testing Services (with NATA-accredited laboratory), Foundation Engineering (including Foundation Design, Retaining Wall Design, and Driveway Design), Structural Engineering (covering floor, wall, roof framing, structural steel, suspended slabs, and pool design), Hydraulic Engineering (sanitary drainage, stormwater, gutters/downpipes, effluent disposal), Building Inspection Services (foundation, slab, frame, and retaining wall inspections), and Geotechnical Engineering Services (slope stability assessments). These services integrate through a bundled approach where the same engineering team handles soil testing, foundation design, structural engineering, hydraulics, and compliance inspections throughout a construction project lifecycle, providing continuity and efficiency for builders and developers.

Differentiator

Problem solved

Functional benefit

Products and services

• Soil Testing Services Comprehensive soil testing and site classification services including field analysis, laboratory testing and NATA-accredited reporting for residential and commercial construction projects. Delivers site classification per AS 2870-2011, wind classification, salinity testing and bushfire attack level assessments, supported by STA's in-house NATA accredited laboratory for faster, more accurate results.
• Foundation Engineering Custom foundation design services for residential and commercial projects including site-specific footing depths, slab thicknesses, steel sizes, concrete specifications and pier layouts, as well as retaining wall design using a proprietary Design Risk Matrix and driveway design to address council requirements and site-specific factors.
• Structural Engineering Structural design engineering for residential, light commercial and industrial buildings covering floor, wall and roof framing, structural steel, suspended slabs on screw piles, sub-floor columns and bracing, portal frames, wall bracing and tie-down, and pool engineering, with member sizing, spacings, bracing and tie-down specifications compliant with Australian building standards.
• Hydraulic Engineering Hydraulic engineering services assessing site flows, pressures, water usage, sustainability and efficiency across all drainage types from underslab to roof gutters, including sanitary drainage design with proprietary Safety Zone methodology, stormwater drainage design, gutters and downpipes design, effluent disposal design and site and soil permeability evaluations.
• Building Inspection Services Compliance inspection services using a proprietary app with a traffic light reporting system (Green=Pass, Orange=Pass with Conditions, Red=Fail) and live on-site updates, covering foundation, slab, frame and retaining wall inspections, with full certification reports delivered within 72 hours.
• Geotechnical Engineering Services Geotechnical assessments, reports and recommendations including slope stability assessments (now using advanced drone technology), fill analysis, reactive clay evaluation, piling requirements and moisture profiles for residential, construction, mining and environmental sectors.

Quantifiable outcome

• Over 500,000 projects completed across residential and commercial sectors
• +3 more outcomes

Named customers8 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

One partnership is on record.

• HIA (Housing Industry Association)minorOthersProfessional membership organization representing the Australian building industry. STA Consulting Engineers holds membership as part of their professional affiliations, demonstrating industry standing and access to industry resources and advocacy.

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Douglas Partners: Australian geotechnical engineering consultancy offering soil testing, foundation advice, and site classification. Most directly comparable peer in scope of geotechnical and site-investigation services targeting residential and commercial construction in Australia.
• Bedrock Geotechnical: Australian geotechnical consultancy providing site classification, soil testing, and foundation advice to builders and developers. Highly comparable niche service offering to STA's soil testing and foundation engineering practice.
• CMW Geosciences: Australia-wide geotechnical and environmental engineering consultancy providing soil testing, foundation recommendations, and slope stability assessments. Overlapping service portfolio and similar client mix in residential and light commercial sectors.
• Soil Surveys Engineering: Australian soil testing and geotechnical engineering firm serving residential builders across multiple states. Closely comparable in service scope (site classification, soil testing, foundation recommendations) and customer segment.
• Calibre Consulting: Mid-tier Australian engineering consultancy offering structural, civil, and geotechnical engineering for residential and commercial property clients. Most comparable mid-sized Australian peer in service mix and target customer profile.

Broad incumbents

• WSP: Global professional services consultancy with significant Australian engineering practice. Overlaps in structural, geotechnical, and buildings engineering but competes primarily in large commercial and infrastructure projects rather than residential.
• Aurecon: Large multi-disciplinary engineering, design, and advisory firm operating across buildings, infrastructure, and geotechnical services globally. Overlaps with STA in structural and geotechnical engineering but serves much larger commercial and infrastructure projects.
• SMEC (Surbana Jurong): International engineering consultancy with strong Australian presence providing advisory, design, and engineering services across infrastructure and property. Comparable engineering services capability, though oriented toward larger infrastructure projects.
• GHD: Global employee-owned engineering, architecture, and environmental consultancy with extensive Australian operations. Comparable in providing engineering services across property and infrastructure, but at much broader scale and depth.
• Arcadis: Global design and consultancy firm with Australian operations across property and infrastructure. Comparable as an engineering services provider to construction clients, though positioned at larger end of project scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/STAConsultingEngineers
• LinkedInlinkedin.com/company/sta-consulting-engineers
• Instagraminstagram.com/staconsultingengineers
• Pinterestpinterest.com/staconsultingengineers

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

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 STA Consulting Engineers