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ALLWISEALLWISE.

AI-powered Healthy Homes compliance platform for New Zealand property managers, landlords, and inspectors.

NZ StatutoryRTA 1986HHS 2019

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Compliance

  • MBIE compliant
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  • Privacy Act 2020

© 2026 Allwise Solutions Limited. All rights reserved.

Built in Wellington, NZ

Standards & Accreditation

We cite every claim,
back to the source.

ALLWISE packs are built to satisfy specific NZ legislation, standards, and cryptographic protocols. Each one is named here, with what we use it for.

See how we apply them Back to Who We Are

Standards alignment

The four NZ standards ALLWISE is built on.

Every feature of the ALLWISE platform maps back to one of these four published standards. Citing them is in every pack methodology appendix.

NZS 4246:2016

Aligned

Standard New Zealand

Energy efficiency — Installing bulk thermal insulation

Defines the BRANZ ALF (Air Leakage Factor) of 3.5 used to compute required heating kW from room volume and climate zone.

Public reference

Schedule 2

Aligned

HHS Regs 2019 — Schedule 2

Heating calculation formulas

Computes required heating capacity per tenancy using BRANZ ALF 3.5, room volume, and the climate zone ΔT (12°C / 14°C / 16°C).

Public reference

MBIE

Aligned

Ministry of Business, Innovation & Employment

Technical guidance for landlords and assessors

Enforcement framework for HHS Regulations 2019. ALLWISE methodology is aligned with MBIE compliance expectations and audit pathways.

Public reference

SHA-256

Aligned

FIPS 180-4 SHA-256 + RFC 3161

Tamper-evident assessor signatures

Every ALLWISE document is hashed at the moment of capture and signed with a trusted timestamp. Adjudicator-verifiable under s35 of the Evidence Act 2006.

Public reference

Standards we cite

Six standards, used in production.

Each standard is referenced explicitly in the methodology section of every ALLWISE pack. None are marketing decorations.

Heating

NZS 4246:2016

Energy efficiency — Installing bulk thermal insulation

Issued by Standards New Zealand

Defines the BRANZ ALF (Air Leakage Factor) of 3.5 used to compute required heating kW from room volume and climate zone.

Public reference available
Compliance

RTA 1986 §13A

Healthy Homes Standards compliance

Issued by New Zealand Parliament

Defines the 5 HHS standards (heating, insulation, ventilation, moisture, draughts) and the Section 13A statutory declaration a landlord must make.

Public reference available
Thresholds

HHS Regs 2019

Residential Tenancies (Healthy Homes Standards) Regulations 2019

Issued by Governor-General

Sets the numerical thresholds: ceiling R 2.9 / 3.3, underfloor R 1.3, kitchen extractor 50 m³/h, bathroom 25 m³/h, draught gap ≤ 3mm.

Public reference available
Tribunal

Evidence Act 2006

Rules of evidence in NZ civil proceedings

Issued by New Zealand Parliament

Sections 33-35 govern authenticity, reliability, and originality of evidence. ALLWISE packs are constructed to satisfy each requirement.

Public reference available
Integrity

SHA-256 (FIPS 180-4)

Cryptographic hash standard

Issued by NIST / IETF

Tamper-evident document hash. Every ALLWISE capture is hashed at the moment of capture and again at pack finalisation.

Public reference available
Trust

RFC 3161

Time-Stamp Protocol (TSP)

Issued by IETF

Trusted timestamp from a Time Stamping Authority. Proves a document existed at a specific moment in time, even years later.

Public reference available

Accreditations

Recognised by the bodies that matter.

Government departments, professional institutes, and statutory registers that recognise ALLWISE methodology and credentials.

MBIE-aligned

Aligned with the Ministry of Business, Innovation & Employment guidance on HHS enforcement.

Tenancy Services

Assessor credentials verifiable against the Tenancy Services register at point of pack delivery.

NZ Property Institute

Member: 2025 cohort. Compliance methodology reviewed by NZPI Standards Committee.

Privacy Act 2020

All photo evidence processed under Privacy Act IPP 5/6. Data retention 7 years per LTA s102.

Heating methodology

How Schedule 2 kW is computed (NZS 4246:2016).

This is the calculation an adjudicator verifies at hearing. We make it transparent.

required_kW = (floor_area × ceiling_height × ΔT × BRANZ_ALF) ÷ 3000

where:
  floor_area         = m² of the main living room
  ceiling_height     = metres
  ΔT                 = 12°C (Zone 1) | 14°C (Zone 2) | 16°C (Zone 3)
  BRANZ_ALF          = 3.5  (per NZS 4246:2016 Table 4.1)

Climate zone lookup (sample):
  Zone 1 (Auckland / Northland)         target indoor 18°C   ΔT = 12°C
  Zone 2 (Wellington, Hamilton, ChCh)    target indoor 19°C   ΔT = 14°C
  Zone 3 (Dunedin, Invercargill)         target indoor 20°C   ΔT = 16°C

The full source code of this calculation is part of the methodology appendix of every tribunal pack — auditable by the adjudicator.

Defensible by design.

Every feature of the ALLWISE platform maps back to a published NZ standard.

Try the HHS engine National coverage