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Tiny House vs Granny Flat in New Zealand: Budget, Legal Rules & Cost Mistakes (2026 Guide)
Thinking about building a Tiny House or Granny Flat in New Zealand?
Before you buy land, hire a builder, or start sketching your dream layout… there are a few very real legal and budgeting traps you need to know about.
In this practical workshop, tiny living educator Rebecca McLean breaks down the decisions that determine whether your project moves forward smoothly… or becomes an expensive mistake.
Rebecca ran Tiny House Builders for nearly 10 years and now helps people plan their projects through Tiny House Mastery, guiding clients through land research, council rules, budgets, and design decisions before they build.
Inside this session you'll learn:
- The two legal pathways for tiny living in New Zealand
- Tiny House on Wheels vs Granny Flat on foundations
- How councils actually assess tiny homes
- The new granny flat rules (up to 70m²)
- Development contributions and hidden council costs
- The real budget categories most people forget
- Delivery, site works and infrastructure costs
- The 3 most expensive mistakes people make when going tiny
You'll also see real examples of tiny homes and projects from Rebecca’s clients - and learn how to start planning your own project the right way.
About Rebecca McLean
Founder of Tiny House Mastery. Legal expert. Advocate for smarter small living.
Rebecca previously founded and ran Tiny House Builders Ltd, where she oversaw the design and construction of more than 60 homes across New Zealand. This hands-on experience gives her extensive construction knowledge, which she now combines with her legal and design expertise to guide others.
She has already helped hundreds of Kiwis navigate the legal, design, and build process for tiny homes and granny flats. With lived experience in multi-generational living and as the past Chairperson of the NZ Tiny House Association, she has a deep understanding of New Zealand’s evolving rules. Rebecca brings a unique, practical voice to your journey.
