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Why More Kiwis Are Building Homes With a ‘Plus One’

Generational Living
Posted on 09 Dec 2025
WHY MORE KIWIS ARE BUILDING HOMES WITH A 'PLUS ONE'

One design trend that is coming in hot demand from our clients, is generational living. More New Zealanders are rethinking how they live, support one another, and future-proof their homes - and a growing number are choosing to build with a “plus one” option. Whether you call it a granny flat, minor dwelling, dual occupancy or home and income, the appeal is the same: flexibility, family connection and long-term value.

So what’s driving this shift? For some, it’s having grandparents close by (and happily available for the odd school pickup). For others, it’s a way to offset rising living costs or help adult children save for their first home. And for many, it’s simply about designing smarter spaces that evolve with life. Whatever the reason, one thing is clear: multigenerational living is no longer niche, it’s mainstream.

At Generation Homes, we’ve responded by developing a range of Home & Income plans that give families more options than ever before.


WHY IS MULTIGENERATIONAL LIVING IS ON THE RISE? 

There isn’t one single driver - it’s a perfect storm of lifestyle, cultural and financial factors. Here’s what’s shaping the trend:

  • Affordability & shared costs
    Mortgage pressure is real, especially for first-home buyers or families feeling the pinch. A minor dwelling can lighten the load through rental income or by sharing living costs with extended family.
     
  • Supporting ageing parents
    As our population ages, many families want their parents nearby. Close enough for connection, but with the independence and comfort of their own self-contained space.
     
  • A cultural shift back to togetherness
    Māori, Pasifika, Asian and many European families have long embraced shared living. A minor dwelling supports these values while adding modern comfort and privacy.
     
  • Helping adult children gain independence
    A “soft launch” into adulthood gives young people space to save for a deposit, without resorting to high-cost rentals or sending half their pay to a stranger on Marketplace.
     
  • Flexibility over decades
    A minor dwelling can be a rental now, a teen retreat later, and a home for grandparents in the future. The real power is in the adaptability.
     
  • Work-from-home potential
    A separate unit can become a hair salon, therapy room, consultancy studio or creative workspace - creating flexible income opportunities. 
WHAT MAKES A GOOD MULTIGENERATIONAL LAYOUT? 

Not all floorplans are created equal, especially when they need to give people room to connect and room to retreat. Here are some key design principles:

  1. Independent access
    A separate entry for the minor dwelling maintains autonomy, avoids hallway congestion, and lets everyone keep their own rhythm.
     
  2. Degrees of separation
    Firewalls are essential for safety if you want your home to have a genuine dual occupancy home with a second kitchen.   
     
  3. Acoustic privacy
    Insulation, sound-proofing, solid-core doors and carpets help everyone live harmoniously. Important if one household prefers peaceful evenings and the other prefers… midnight TikTok scrolls.
     
  4. Smart zoning 
    Bedrooms thoughtfully placed apart, a dedicated living area for the minor dwelling, and outdoor spaces that don’t overlap too much all help maintain comfort. 
     
  5. Shared spaces that still feel generous
    Open-plan living, big dining spaces, and smooth indoor-outdoor flow keep gatherings enjoyable rather than cramped.
     
  6. Accessibility for ageing in place
    Level entry, walk-in showers, wider doorways and good lighting ensure the home supports mobility needs over time.
     
  7. Parking and driveway planning
    Two households usually means more cars - so well-designed designed driveways, garages and off-street parking matter.
IS A 'HOME PLUS ONE' RIGHT FOR YOU?

A few guiding questions may help:

  • Who might live in this space now or in the future?
  • Do you want rental income to support the mortgage?
  • How much privacy do you need between households?
  • Do you want the option to run a business from home?
  • How will your family change over the next 10–20 years?

A flexible design today becomes a lifesaver tomorrow.

What life looks like in a multigenerational home - imagine:

  • Grandparents popping over for morning tea
  • Teens enjoying their own zone
  • Young adult children saving for a deposit
  • A creative studio or practice operating from home
  • A family dinner just a walkway away
  • Everyone together - yet everyone with their own space
  • An Airbnb income

It’s the ideal blend of connection and independence. And perhaps the biggest win? Your home keeps working for you, long after the children have grown or your lifestyle has shifted.

TRUE STORY: THREE GENERATIONS LIVING SIDE-BY-SIDE

One great example of generational living done well, comes from a Waikato family who built two attached-but-separate homes in Cambridge - one for Darren and Tracy and their boys, and the other for Darren’s mum. The vision was simple: support one another, maintain privacy and give Mum a home that offered both independence and connection.

The setup works beautifully. Shared meals happen naturally and everyday support flows easily - yet everyone still has their own front door, routines, kitchen, and personal sanctuary.

Their new setup has quickly become more than a practical arrangement - it’s become part of the family rhythm. As Darren shares:

“It’s everything we wanted. It’s a cool family home for us, and having Mum right next door is great… This morning Tracy whipped up a batch of scones and we just called Mum and said, ‘hey, we’re having scones.’ She pops over for coffee and a scone - it’s lovely to have that as part of your life.”

Simple moments like these are exactly what multigenerational living is about: effortless connection, closeness without crowding, and a home that makes everyday life feel richer.

Darren loves the flexibility: “For us, it has dual occupancy… You could use it for older children, or Airbnb, or guests. You could do all sorts of things with it. It gives you lots of options.”

When researching existing dual-occupancy homes, Tracy found many had internal access or restrictions that prevented a full kitchen. “That just didn’t feel like the right thing for Mum,” she says.

They chose the Dover plan, which already includes a complete minor dwelling - its own kitchen, living spaces, laundry, bathroom and two bedrooms. The separation felt right. The connection felt natural. It was exactly what their family needed.

Their story is a great reminder that generational living doesn’t always mean one large home. Sometimes, the smartest solution is two separate dwellings designed to work together. 

You can read their full story here

HOME & INCOME PLANS

We offer a range of Home & Income plans shaped specifically for extended families, rental opportunities, or future-proofing your lifestyle. Here are three standout options:

1. Rata - a modern home with a fully self-contained unit

Rata features a contemporary design plus a fully self-contained minor dwelling. It’s ideal for parents, in-laws, grown children gaining independence, or rental income.

Main dwelling features:

  • Four double bedrooms with ensuite and walk-in wardrobe in master
  • Open plan kitchen, living and dining
  • Galley style kitchen with scullery
  • Alfresco dining
  • Double garage with internal access and laundry

Minor dwelling features:

  • One bedroom home with ensuite and walk-in wardrobe
  • Open plan kitchen, dining and living area
  • Plenty of storage
  • Fixed price contract
  • 10 year residential build guarantee 

View the Rata plan

2. Kaipara - dual living for larger families

The Kaipara offers a generous main home plus a one-bedroom secondary dwelling positioned for maximum privacy. 

Main Dwelling:

  • Four double bedrooms
  • Master with ensuite and walk-in wardrobe
  • Modern galley kitchen with large scullery
  • Open plan kitchen, dining and living
  • Family bathroom with separate WC
  • Storage under stairs
  • Double garage with laundry and internal access

Minor Dwelling:

  • Two bedrooms with wardrobes
  • Modern kitchen
  • Open plan kitchen, dining and living
  • Family bathroom with laundry
  • Fixed price contract
  • 10 year residential build guarantee

View the Kaipara plan. 

3. Buckingham - a spacious family home + bonus income

With strong indoor-outdoor flow, large central living spaces, and a completely separate minor dwelling, the Buckingham gives you the best of both worlds: a beautiful family home plus a flexible “plus one” option.

Ideal for tenants, grandparents, or a work-from-home setup.

View the Buckingham plan.

READY TO EXPLORE HOME & INCOME POSSIBILITIES? 

If you’re dreaming of a home that brings your whānau closer, adds income, or simply gives you more flexibility for the future, then a Home & Income plan might be the perfect solution.

Explore our full range of Home & Income designs here.