5/79 Shelly Beach Road, Saint Mary's Bay, Auckland 1011, NZ
+64 9 378 4920 [email protected] Mon-Fri: 08:30 - 17:30 NZST
Project Scope Calc
Registered NZ Engineering Practice • Est. 2010

Precision Civil & Structural Engineering for New Zealand Infrastructure

DETAILED LIMITED provides chartered civil engineering, structural design, geotechnical assessments, and council consent packages across Auckland and greater New Zealand. Led by Principal Jasen Kawana TAIAROA.

Interactive Cost & Scope Estimator Council Consent Readiness Check
NZBN: 9429031710336
PS1 / PS4 Producer Statements
NZS 1170 & 3604 Standards
Engineering Profile • NZ ACTIVE PRACTICE
Legal Entity: DETAILED LIMITED
Company Number: 2384129
Incorporated: 08 Jan 2010
Managing Director: Jasen Kawana TAIAROA
ANZSIC Code: M692320 Civil Engineering
Auckland HQ: Saint Mary's Bay, Auckland 1011

Over 15+ years delivering structural calculations, seismic strengthening, and complex stormwater drainage engineering across the North & South Islands.

15+
Years of NZ Registered Excellence
860+
Civil & Structural Projects Delivered
100%
Auckland Council Consent Success
48h
Preliminary Engineering Scoping
Interactive Tool

Civil & Structural Scope Calculator

Configure your site parameters below for real-time preliminary budgeting, required Producer Statements, engineering timeline, and hours allocation.

250 m²
50 m² (Minor Residential) 1,000 m² (Commercial) 2,500+ m² (Subdivision)
Estimated Engineering Scope
$3,925 NZD (est.)
  • Estimated Effort: 24 Engineering Hours
  • Expected Turnaround: 7-10 Business Days
  • Deliverable Certification: PS1 & PS4
  • Standards Applied: NZS 1170 / NZS 3604 / AUP
Capabilities

Comprehensive Civil & Structural Solutions

Tailored engineering consultancy from early resource consent feasibility through to construction monitoring and final PS4 sign-off.

Structural Engineering & Calculations

Comprehensive structural modeling for timber, steel, and reinforced concrete. Producing full calculation packages, structural beam schedules, and Building Consent PS1 Producer Statements.

  • Seismic Assessment & Retrofit (NZS 1170.5)
  • Residential & Multi-Unit Foundations
  • Portal Frames, Trusses & Bracing Plans
Explore Structural

Geotechnical & Slope Stability

Subsurface soil testing, dynamic cone penetrometer (DCP) testing, hand auger drilling, and retaining wall engineering for challenging Auckland coastal and clay terrains.

  • Ground Bearing Capacity Confirmation
  • Timber Pole & Concrete Retaining Walls
  • Landslip Remediation & Slope Stabilization
Explore Geotech

Stormwater & Civil Infrastructure

Hydraulic modeling, overland flow path (OLFP) assessments, detention/retention sizing, and public wastewater network extensions compliant with Auckland Council Code of Practice.

  • 100-Year Flood & OLFP Hydraulic Reports
  • Stormwater Mitigation & Detention Sizing
  • Watercare / Public Drainage Extensions
Explore Stormwater
Interactive Audit

Auckland Council Consent Readiness Wizard

Answer 3 quick technical questions to determine your engineering requirements under the Auckland Unitary Plan (AUP) and NZ Building Act 2004.

Step 1: What is the site gradient or proximity to steep embankments?

Step 2: Are you adding impervious surface area or altering drainage?

Step 3: What structural scope does your development require?

Case Studies

Selected Engineering Projects in New Zealand

Explore our civil, structural, and infrastructure engineering deliverables across the Auckland region and nationwide.

Structural PS1
Saint Mary's Bay, Auckland

Coastal Cantilever Residence

Multi-level moment frame and cantilevered concrete slab over steep marine sandstone cliff.

Code: NZS 1170.5 View Specifications →
Geotech & Retaining
Ponsonby, Auckland

Ridge Retaining & Anchor Wall

4.2m high contiguous bored concrete pile retaining system protecting multi-unit residential boundary.

Code: NZS 4402 View Specifications →
Civil Stormwater
Albany, Auckland

Subdivision Stormwater Infrastructure

Public stormwater attenuation network and overland flow management for 8-lot greenfield development.

Code: Auckland Code of Practice View Specifications →
FAQ

Frequently Asked Engineering Questions

Key insights into Producer Statements, Auckland Council consent timelines, and geotechnical requirements.

What is a Producer Statement (PS1 / PS4) in New Zealand?
A Producer Statement is a formal technical document issued by a Chartered Professional Engineer (CPEng) confirming that a design complies with the New Zealand Building Code (PS1 - Design), or that construction has been monitored and built according to approved plans (PS4 - Construction Review). Councils across NZ require these for building consent and Code Compliance Certificate (CCC) sign-off.
When do I need a Geotechnical Soil Investigation in Auckland?
A geotechnical investigation is required whenever building on uncertified fill, expansive clay soils, near steep slopes, in Auckland Council flood/hazard zones, or when applying for subdivision and building consents. Our investigation confirms ultimate and allowable bearing capacity and determines foundation types (e.g. TC2/TC3 solutions, driven timber piles, or ribraft foundations).
How long does a civil or structural engineering package take?
Standard residential structural calculations and PS1 packages typically take 5 to 10 business days following site inspection and architectural plan receipt. Complex commercial, steep cliff, or multi-lot subdivision civil engineering works generally require 2 to 4 weeks depending on council requirements and Watercare coordination.
Can DETAILED LIMITED handle council RFIs (Request for Further Information)?
Yes. All our engineering design packages include dedicated support for Auckland Council and territorial authority RFIs. We liaise directly with council processing engineers to address technical queries swiftly, ensuring your consent is granted without unnecessary delays.
Get in Touch

Schedule an Engineering Consultation

Speak directly with our Auckland civil and structural team. Submit your project details below for rapid engineering scoping and tender appraisal.

Auckland Office HQ

Registered Address

5/79 Shelly Beach Road, Saint Mary's Bay, Auckland, 1011, New Zealand

Direct Phone

+64 9 378 4920

Email Inquiries

[email protected]

Corporate Information

DETAILED LIMITED • NZBN: 9429031710336 • Reg: 2384129 • Director: Jasen Kawana TAIAROA

Lodge Project Consultation

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