INSIGHTS / Don’t limit your land – maximising minor dwellings

Don’t limit your land – maximising minor dwellings

Minor dwellings or commonly known to kiwi’s as granny flats – can now be built (up to 70m²) without needing a full building consent. Whether it’s extra room for family members or to generate rental income – recent changes to national rules have made minor dwellings more accessible. However, while the process has been simplified, it hasn’t become risk‑free.

 

We regularly work with property owners who assume a minor dwelling will be straightforward, only to discover that site‑specific constraints trigger additional requirements. Understanding when to seek professional advice can save time, cost, and stress.

 

“In many cases, we see people jumping ahead and wanting a granny flat to house family, without thinking of the long-term benefit of surveying the land and maximising the value of their land,” McKenzie & Co’s experienced Surveyor and Land-use advisor Peter Cottle advises.

While a minor dwelling is a great starting point, don’t limit your land to just one unit. Many properties have potential for subdivision or multiple units, which can help you maximise your investment and future-proof your development.

 

New Rules for Minor Dwellings

Recent national changes mean that a small, standalone minor dwelling (up to 70m², single storey and compliant with the Building Code) may be built without a traditional building consent. In many zones, minor dwellings are also a permitted activity under national planning standards.

While this has reduced red tape, it does not remove the need to carefully assess planning rules, infrastructure constraints, and site limitations. Councils still rely on District Plan rules, overlays, and technical standards to determine whether a project truly qualifies as permitted.

 

When a Minor Dwelling May Still Need Resource Consent

In practice, many minor dwelling projects still require resource consent or specialist input. Common triggers include:

·         Zoning and District Plan Rules

·         Site Coverage, Height, and Setbacks

·         Natural Hazards and Overlays

·         Infrastructure and Servicing Constraints

·         Title Constraints

Why Early Advice Matters

One of the most common mistakes we see is progressing too far into design before confirming planning and servicing requirements. Early advice helps to:

  • Confirm whether resource consent is required
  • Identify risks before costs escalate
  • Avoid redesigns or delays later in the process
  • Ensure compliance with council and statutory requirements

How McKenzie & Co Can Help

McKenzie & Co provides practical, locally informed advice to support minor dwelling projects from concept to approval. Our services include:

  • Planning and feasibility assessments
  • District Plan and zoning analysis
  • Resource consent preparation and management
  • Engineering input on access, earthworks, and servicing
  • Liaison with council and other stakeholders

We focus on clear advice and efficient pathways, helping you understand what’s required – and what isn’t – before you commit.

Need advice on your land? Speak to McKenzie & Co.