Multigenerational home designs & house plans - Buildi (2024)

With rising home prices, increased living costs and changing family values, multigenerational homes are becoming more popular in countries worldwide including Australia. But beyond the general idea of several generations in the same home, what’s involved with designing a home for multigenerational families? Gather around as we talk about multigenerational home designs & house plans.

Table of Contents

What are multigenerational living spaces?

Multi-generational homes are houses designed to accommodate family members from multiple generations under the same roof. It’s like turning a family home into an extended family home. Though not necessarily the norm in Australia, in many countries and cultures, intergenerational living is quite common, especially in places like parts of Europe, Asia and the middle east. Some quick examples of living combinations include grandparents living with their adult children and grandchildren or adult siblings living with their families under one roof. Due to housing affordability, the pandemic and other factors, the popularity of multigenerational homes has risen significantly among home buyers.

Adult children are living with their parents longer, often into their thirties, and people are reluctant to place their parents in an aged care facility.

How does a multigenerational home differ from other home designs?

There are a few design choices that define multigenerational home designs from other Aussie households.

Common features of multigenerational home designs include:

  • Multiple living areas and sitting areas.
  • Two master bedrooms and a master suite.
  • The ground floor tends to be for the older family members (grandparents, etc).
  • Dual occupancy home designs.
  • Granny Flat is included as part of the design.

Advantages

House affordability: Even if land prices weren’t so high, constructing one house is simply cheaper than trying to build two. Upkeep, bills and general maintenance on one dwelling are going to be less expensive than with multiple houses.

Easier to get approval for finances: The more income and bank balances you have, the more security your lender will see. This increases your chances of getting approval for a loan.

Create Stronger Family Bonds: Multigenerational housing provides the chance for enhanced connection among family members. Grandparents can spend more time with their grandchildren and the little ones can learn from their elders.

Reduce Loneliness: Research shows people tend to experience loneliness and isolation most during their teen and young adult years and during their senior years. These are both big transitional periods, so it makes sense that there would be a connection.

Futureproofs your home: Planning children down the line or unsure what will happen when your parents reach a certain age? Building a multi-generational living space means you’ll be more ready for whatever the future holds.

Could potentially increase the value of your home: With multigenerational living spaces becoming more popular and land becoming more scarce, there’s a strong chance these types of homes will age well in the real estate market.

Disadvantages

Less Privacy: This can particularly be an issue in houses not quite big enough where people end up living on top of each other.

More housework: Even if everyone pitches in, chances are the house will get messier faster, which means more vacuuming, washing dishes and cleaning. Features of your house will be used more often, meaning more breakage as well.

More Noise: More people will mean more activity which will naturally lead to a noisier environment. This is where careful house design will make a big difference. Consider where rooms are placed. If you’re building a double-storey house, the buffer zones can be used to your advantage.

Why are multi-generational homes becoming more popular?

There are a few reasons why multigenerational households are becoming more popular. For older relatives who don’t need full-time care, it’s a way for them to downgrade from a larger house to their home without sacrificing independence. An added bonus is they get to spend their time around family.

For young adults, rental prices are very high in city areas, even for those with work or government support. More adults are living with their parents well into their twenties and thirties as a means of saving money during study or until they can afford their own home.

How changes to the National Construction Code

By 1 October 2023, it will be a requirement to meet the new changes made to the National Construction Code. For instance, it will be mandatory for new homes to be more accessible. Some of the major changes being made to affect accessibility include:

  • The ground floor of a new house design must have a bathroom.
  • At least the entrance to the house must be accessible without stairs.
  • Walls around the toilet and bathroom area must be capable of having rails and support installed.

While the above will be a legal requirement, it will actually have benefits for you and your family. Unfortunately, the effects of age can vary wildly from person to person, and it’s difficult to guess when a relative will need some assistance. Something as simple as having a downstairs bathroom with rails could make a world of difference to those who need it.

Click here to read our guide to National Construction Code 2022 changes.

Multi-generational home design considerations

A well-designed multi-generational home needs to find the balance of creating a communal environment while still allowing everyone their own separate space.

Three Golden Rules:

  1. Make sure your home has a bedroom on the ground floor (preferably with an ensuite) so any elderly family members won’t have to climb the stairs.
  2. Choose floorplans with at least two living areas
  3. Consider all your options, including Dual Occupancy, a granny flat and other floorplans.

Our tips for building multi-generational homes

  • The most common mistake we see with multigenerational living spaces is people underestimate how much room they’ll need.
  • Consider a floorplan with “zones”. For example, part of the house will have the kid’s bedrooms, living space and play area, while another with have the master bedroom for the grandparents and their own private space. There would be communal, open-plan living spaces where everyone can hang out.
  • If your large family is about to become a larger family will need to account for not just the family members who are currently here. You don’t want to have to kick grandma out to make room for the baby!
  • While it’s nice when family live together, everyone needs their own space sometimes. Ensure your design has enough bathrooms, bedrooms, storage space and powder rooms.
  • Would you like separate living quarters or one connected home? Dual occupancy home has the benefit of separate homes as does a granny flat.
  • Consider whether this is a good idea. It’s possible to love someone without actually wanting to live with them and not everyone’s living habits are compatible.

Who are the top multi-generational home builders

Due to the rising demand for house designs for multiple generations, most builders will have some sort of floor design to meet your needs. Here are just some of the builders we’d recommend.

G.J Gardner Homes

Read Builder Review here

Brighton Homes

Read Builder Review here

Clarendon Homes

Click here to read Builder Review

Metricon Homes

Click here to read the builder review

McCarthy Homes

Builder Review

Plantation Homes

Builder Review

Click here to see our list of Builder Reviews!

Need help or advice? Get free advice from an experienced building broker

Need help getting your plans altogether or need some guidance with your new home build? Buildi is here to help you every step of the way. We’ll take your proposal to our panel of builders, and have them bid for your business. At Buildi, we’re all about giving power back to the customers. Get in touch today to find out how we can help you with your home build.

Book your free, impartial consultation today!

Multigenerational home designs & house plans - Buildi (2024)

FAQs

How big should a multi-generational home be? ›

Some of the best multigenerational, or 4500 to 5000 square foot, floor plans keep versatility, privacy, and functionality in mind. Because there are various ages and family members with different special needs living under one roof, a floorplan must consider all the possible scenarios for a large or growing family.

Are multigenerational homes a good idea? ›

The Benefits of Multi-Generational Living

That's especially important for elderly residents, as a number of studies have demonstrated a link between longevity and social interaction. If grandparents and grandkids are living under the same roof, it also allows those two generations to create deeper connections.

What is a multigenerational floor plan? ›

A multi-generational style home plan is a residential architectural design that accommodates multiple generations or extended family members under one roof. These homes are specifically designed to provide separate living spaces and amenities for different age groups within a family.

What are some disadvantages of multi gen homes? ›

There are also disadvantages of multi-generation households.
  • Less Privacy. “Living with others may be more difficult for grandparents and young adults who are accustomed to living alone.
  • More Noise. ...
  • More Housework. ...
  • Need for Upgrade or Remodeling.

Which group is least likely to live in multigenerational households? ›

White Americans have the lowest share of people living in multigenerational households.
  • American Indian and Alaska Native. 14.9%
  • Asian. 13.5%
  • Hispanic. 13.2%
  • Black or African American. 11.2%
  • Some other race. 8.8%
  • Two or more races. 8.6%
  • Total US. 6.8%
  • White. 5.0%
Dec 5, 2023

How big should a house be for a family of 4? ›

The Number Of People In Your Home

If you're a family of four, multiply 4 x 600. That would mean you should look for homes around 2,400 square feet. If it's just you and a partner or roommate, you'd multiply 2 x 600, and look for a home around 1,200 square feet.

What percentage of Americans live in multigenerational homes? ›

Multigenerational households — three or more generations under one roof — made up 4.7% of all U.S. households but 7.2% of family households in 2020, an increase from 2010. Family households are those with at least one person related to the householder by birth, marriage or adoption.

Is multigenerational housing making a comeback? ›

The share of the U.S. population in multigenerational homes more than doubled between 1971 and 2021. Now, about one in five Americans lives in a multigenerational home. As housing costs have risen, more families are pooling resources to afford buying a home or making rent payments in expensive markets.

When did people stop living in multigenerational homes? ›

These trends continued through 1980 when only 12% of the US population lived in a multigenerational household, the lowest in history. But since 1980, multigenerational living has become consistently more popular, with one-in-five Americans living in a multigenerational household in 2016.

What does a multi-generational home look like? ›

Multigenerational homes (also known as multi-gen homes) typically house more than one adult generation of family members in the same home. The living arrangements can include grandparents, parents and their adult children. It can also include extended family members and in-laws.

Which generation is buying the most homes? ›

WASHINGTON (March 28, 2023) – The share of baby boomers has surpassed millennials and now makes up the largest generation of home buyers, according to the latest study from the National Association of Realtors®.

What are the three general styles of multi level homes? ›

Besides the standard one-story house, there are several types of multilevel home designs. Depending on the style of the home, these designs can include split-level, stacked, or tri-level styles. There are many advantages of building a split-level home of different types.

What is an example of a multigenerational household? ›

For example, a 7-year-old living with her parents and a grandparent or an 18-year-old living with a 25-year-old sibling and their parents in the parents' home are each living in a multigenerational household.

Is it better if three generations of a family live together? ›

Strengthened Family Bonds

Multigenerational living can provide opportunities for more frequent family gatherings, shared experiences, and shared memories. This can lead to stronger relationships and a greater sense of community among family members.

What is the three-generation house plan? ›

The three-generation house has two separate apartments that at first glance appear to be positioned unconventionally – while the grandparents are accommodated upstairs, the couple with children live in the lower one, thus providing the older generation with views and the younger one with both office space and direct ...

What is a 3 generation home? ›

Three-generation: The most common multigenerational household arrangement consists of three generations – typically one or more working-age adults, one or more of their children (who may also be adults), and either aging parent(s) or grandchildren.

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