When 'Consentable' Doesn't Mean What Most Buyers Think

Ask a supplier whether their tiny home is "consentable" and you'll almost always hear yes. But that single word hides a lot of grey area — and buyers who take it at face value can end up with a home they can't legally live in.

Here's what the term actually means in practice, where buyers get caught out, and the questions that cut through the marketing.

1. Latest Rules Don't Automatically Mean Consent-Free

Recent rule changes have made small secondary dwellings easier to build in many parts of New Zealand. That's genuinely good news — but "easier" is not the same as "no consent needed at all."

The exemptions come with conditions: size limits, setback rules, height restrictions, and requirements around services. Whether your specific unit on your specific site qualifies is a question of detail — not a yes-or-no answer a salesperson can give over the phone.

2. The Differences Buyers Are Rarely Told

When a supplier says "consentable," they usually mean the design could, in theory, meet the Building Code if a consent application were made. That's very different from:

• The unit being exempt from building consent on your site
• The unit having already been through a consent process
• The supplier handling the consent for you
• The unit being legal to live in as a dwelling

Each of those is a separate claim with separate paperwork. A home that is "consentable" in principle can still require months of engineering reports and thousands in fees before it's legal.

3. Why Expandable Homes Leave Less Room for Error

Expandable and modular homes bring their own consent wrinkles. Because they unfold or join on site, councils may assess them differently from a single fixed unit — and the line between "building" and "vehicle" matters enormously.

A unit on a trailer chassis may be treated one way; the same floor area on piles another. Add plumbing and a permanent connection, and the assessment changes again. This is exactly where vague assurances fall apart.

4. A Pattern Emerging in the Industry

We keep hearing versions of the same story. A buyer is told the unit is "fully consentable" or "exempt under the new rules." The deposit is paid. Then the council says otherwise — and suddenly the buyer owns a home that needs an unbudgeted consent process, or worse, can't be used as a dwelling at all.

The supplier's answer is usually the same: "consent is the buyer's responsibility." Legally, they may be right. Ethically, it's a failure of disclosure — and it's giving the good operators a bad name.

5. A More Conservative — and Safer — Approach

The suppliers worth buying from do things differently. Instead of promising exemptions, they:

• Explain which rules apply to your council and zone
• Put exactly what's included — and what isn't — in writing
• Provide the documentation a consent application would need
• Tell you honestly when consent will be required
• Connect you with people who handle the process

It's less exciting than "no consent needed!" — and far more valuable. A supplier who under-promises on consent is usually one who over-delivers on the build.

6. A Note on Portability and Consent

Portability adds another layer. A home that can be moved isn't automatically exempt — and "it's on wheels" is not the legal argument many assume it is. Councils look at how the unit is used, connected and sited, not just what it sits on.

If your plan relies on portability to avoid consent, get that confirmed in writing by your council before you buy. It takes one email and can save you from a very expensive assumption.

7. Why Track Record Matters More Than Marketing Claims

In a market this young, the strongest signal isn't a supplier's website copy — it's their history. How many homes have they delivered? How many have been through consent successfully? Can you talk to owners who've been through the process?

A supplier with hundreds of delivered, consented homes has answered these questions many times before. One who pivots to "it depends" the moment you ask for specifics is telling you something important.

8. Where Buyers Go Wrong

The mistakes are consistent: trusting verbal assurances, assuming "exempt" applies to their site, signing before checking with the council, and treating consent as an afterthought instead of part of the budget and timeline.

None of this means you shouldn't buy. It means consent deserves the same attention you give the floor plan.

The Question Worth Asking

So before you sign anything, ask the one question that separates the honest suppliers from the rest: "Show me the documentation — and show me a consented home you've already delivered."

A good supplier will have both ready. And if you'd like a starting point, our free Tiny Home Guide includes the full consent checklist we recommend every buyer work through first.